Make Your Own Fertilizer

Fertilizers Home Made Formulas

In this information you will find recipes and techniques that work to: Protect your house and lawn with special indoor and outdoor Shock Treatments: Ants, Snails, Slugs, Roaches, Fleas, Earwigs, Cockroaches, Silverfish, Beetles, Termites and Webworms. Say good-bye to those annoying yellow spots. Learn the secret to keep your grass greener in water restricted areas and in hot weather. Treat your lawn with a deworming concoction. (learn how and why you must do it once a year) Use effective Natural Insecticides (it's now time to learn what they are and how to use them. in the years to come, only natural insecticides will be permitted by cities!) Avoid serious plant, pet and child health problems caused by toxic commercial products. Protect yourself and your family against the nile virus in 1 minute. Kill ants and destroy the entire colony in 3 days or less. Kill harmful insects while fertilizing your soils.

Fertilizers Home Made Formulas Summary

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Mixed and Blend Fertilizer G

The raw materials used to produce mixed fertilizers include inorganic acids, solutions, double nutrient fertilizers, and all types of straight fertilizers. The choice of raw materials depends on the specific nitrogen, phosphate, potassium (N-P-K) formulation to be produced and on the cost of the different materials from which they can be made. The mixed fertilizer process involves the controlled addition of both dry and liquid raw materials to a granulator, which is normally a rotary drum, but pug mills are also used. Raw materials, plus some recycled product material, are mixed to form an essentially homogeneous granular product. Wet granules from the granulator are discharged into a rotary drier, where the excess water is evaporated and dried granules from the drier are then sized on vibrating screens. Over- and undersized granules are separated for use as recycle material in the granulator. Commercial-product-size granules are cooled and then conveyed to storage...

Table 10 Effluent Limitations mgL for Subpart A Phosphate Fertilizer

Produce NPK grades in varying proportions 22 . According to Subpart O, mixed fertilizer means a mixture of wet and or dry straight fertilizer materials, mixed fertilizer materials, fillers, and additives prepared through chemical reaction to a given formulation, whereas blend fertilizer means a mixture of dry, straight, and mixed fertilizer materials. The effluent limitations guidelines for BPT, BCT, and BAT, and the standards of performance for new sources, allow no discharge of process wastewater pollutants to navigable waters. Finally, the pretreatment standards establishing the quantity of pollutants that may be discharged to publicly owned treatment works (POTW) by a new source are given in Table 11.

Increasing fertilizer use

Currently, fertilizer-N use efficiency by agricultural crops is estimated to be approximately 50 per cent (Smil, 1999 Howarth et al, 2002 Ladha et al, 2005). In other words, on average half of the amount of the fertilizer-N applied cannot be recovered in the crop or in the soil and has to be considered to have been lost from the cropping system. Denitrification (N2O and N2), volatilization (NH3) and leaching (NO3) are the major pathways of N losses (Schlesinger, 1997 Mosier et al, 2001), causing a cascade of environmental and human health problems (Galloway et al, 2003). Therefore there is the potential for major improvements in N use efficiency through adopting fertilizer, soil water and crop management practices that focus on maximizing crop N uptake, with minimum N fertilizer losses and the optimum use of indigenous soil N (Ladha et al, 2005). Through optimizing N use efficiency, a total reduction in N2O emissions will be achieved as well as a further reduction in N2O emissions per...

Optimizing fertilizer application with respect to nitrous oxide emission

Global N2o Emission

Emissions of N2O from agricultural systems will not decrease to zero when no N fertilizer is applied, but will remain at some background level, as in any non-agricultural system. For example, when 383 non-manured, non-N-fertilized cropping systems were evaluated for N2O emissions, the average background emission was estimated at 0.55kg N2O ha-1 (Helgason et al, 2005). Natural N deposition and biological fixation, and N mineralization from soil organic Table 5.2 Global estimates of manure-N excretion in animal houses and storage systems and excretion during grazing, spreading of stored manure in cropland and grassland, and N fertilizer use in cropland and grassland for the year 2000 Table 5.2 Global estimates of manure-N excretion in animal houses and storage systems and excretion during grazing, spreading of stored manure in cropland and grassland, and N fertilizer use in cropland and grassland for the year 2000 N fertilizer use Agricultural systems serve for the production of food,...

Phosphate Fertilizer A

Large Scale Biogas Facilities

The phosphate fertilizer industry is defined as eight separate processes phosphate rock grinding, wet process phosphoric acid, phosphoric acid concentration, phosphoric acid clarification, normal superphosphate, triple superphosphate, ammonium phosphate, and sulfuric acid. Practically all phosphate manufacturers combine the various effluents into a large recycle water system. It is only when the quantity of recycle water increases beyond the capacity to contain it that effluent treatment is necessary. Wet Process Phosphoric Acid. A production process flow diagram is shown in Figure 8. Insoluble phosphate rock is changed to water-soluble phosphoric acid by solubilizing the phosphate rock with an acid, generally sulfuric or nitric. The phosphoric acid produced from the nitric acid process is blended with other ingredients to produce a fertilizer, whereas the phosphoric acid produced from the sulfuric acid process must be concentrated before further use. Minor quantities of fluorine,...

Use as Fertilizer Soil Conditioner

OMWW contains a high organic load, substantial amounts of plant nutrients (3.5-11 g l of K2O, 0.06-2 g l of P2O5, and 0.15-0.5 g l of MgO) and is a low cost source of water, all of which favor its use as a soil fertilizer or organic amendment to the poor soils that abound so much in the countries where it originates (Cegarra J. et al., 1966a,b Catalano L. and Felice M. de, 1989 Nunes J.M. et al., 2001). Direct application of OMWW to soil has been considered as an inexpensive method of disposal and recovery of their mineral and organic components (Di Giovacchino L. et al., 1990, 1996, 2001, 2002) see Chapter 8 ''Biological processes'', section ''Irrigation of agricultural land Land spreading''. The amurca of the ancients was recommended as a fertilizer for olive trees (Cato, XCIII), vines, and fruit trees (Columella, XI, 2 ''Geoponika''29, II, 10), although these latter sources suggested that amurca used for this purpose must be free from salt. However, the use of OMWW as a fertilizer...

Phosphate Fertilizer Industry in Eastern Europe

Waste Material Fertiliser Industry

Koziorowski and Kucharski 18 presented a survey of fertilizer industry experience in Eastern European countries and compared it with the United States and Western European equivalents. For instance, they stated that HF and silicofluoric acid are evolved during the process of In Czechoslovakian phosphate fertilizer plants, the superphosphate production waste-waters are further treated by neutralization on crushed limestone beds contained in special tanks that are followed by settling tanks for clarification of the wastewater. The beds have from three to five layers (with a minimum bed height of 0.35-1.60 m), treat a range of acidity of wastes from 438 to 890 meq L, and are designed for a hydraulic load ranging from 0.13 to 0.52 cm3 cm2 s (1.9-7.7 gpm ft2) at operating temperatures of 20-28 C. This experience agrees with results reported from Polish plants, the limestone used contains 56 CaO, and it was found in practice that coarse particles of 3-5 mm give better results because less...

Phosphoric Acid and NPK Fertilizer Plant

According to the literature 3,17,33 , the heterogeneous nature of fertilizer production plants precludes the possibility of presenting a typical case study of such a facility. Nevertheless, the wastewater flows, the characteristics, and the treatment systems for a phosphoric acid and N-P-K fertilizer plant were parts of a large fertilizer manufacturing facility. The full facility additionally included an ammonia plant, a urea plant, a sulfuric acid plant, and a nitric acid plant. The typical effluent flows were 183 m3 hour (806 gpm) from the phosphoric plant and 4.4 m3 hour (20 gpm) from the water treatment plant associated with it, whereas in the N-P-K plant they were 420 m3 hour (1850 gpm) from the barometric condenser and 108 m3 hour (476 gpm) from other effluent sources.

Ammonium Phosphate Fertilizer and Phosphoric Acid Plant

The fertilizer industry is plagued with a tremendous problem concerning waste disposal and dust because of the very nature of production that involves large volumes of dusty material. Jones and Olmsted 16 described the waste disposal problems and pollution control efforts at such a plant, Northwest Cooperative Mills, in St. Saul, Minnesota. Two types of problems are associated with waste from the manufacture of ammonium phosphate wastes from combining ammonia and phosphoric acid and the subsequent drying and cooling of the products, and wastes from the handling of the finished product arising primarily from the bagging of the product prior to shipping. Because the ammonia process has to be forced by introducing excess amounts of ammonia than the phosphoric acid is capable of absorbing, there is high ammonia content in the exhaust air stream from the ammoniator. Because it is neither economically sound nor environmentally acceptable to exhaust this to the atmosphere, an acid scrubber...

Table 6 Raw Wastewater Characteristics of Phosphate Fertilizer Industry Retention Ponds

Considerable variation, therefore, is observed in quantities and wastewater characteristics at different plants. According to a UNIDO report 34 , the most important factors that contribute to excessive in-plant materials losses and, therefore, probable subsequent pollution are the age of the facilities (low efficiency, poor process control), the state of maintenance and repair (especially of control equipment), variations in feedstock and difficulties in adjusting processes to cope, and an operational management philosophy such as consideration for pollution control and prevention of materials loss. Because of process cooling requirements, fertilizer manufacturing facilities may have an overall large water demand, with the wastewater effluent discharge largely dependent on the extent of in-plant recirculation 17 . Facilities designed on

Changes In Animal Manure Management And Fertilizer

The changes in livestock production and land use portrayed above also have important repercussions for the production, management and use of animal manure and fertilizers. Bouwman et al. (2005b) distinguished large ruminants (dairy and non-dairy cattle, buffaloes), small ruminants (sheep and goats), pigs, poultry, horses, asses, mules and camels for calculating the animal manure N production. The approach for distributing of animal manure over the two production systems, and within each system over different animal manure Global total N inputs from fertilizers and production of animal manure in agricultural systems have almost doubled between 1970 and 1995 from about 114 Tg yr to 188 Tg yr, whereby N manure contributed 83 Tg yr or about 73 in 1970 and 104 Tg yr (55 ) in 1995. Bouwman et al. (2005b) estimated a total N input from fertilizers and animal manure of 238 Tg yr, animal manure N being 127 Tg yr (53 ) and N fertilizer 110 Tg yr (estimate for 2030) (Table 5.3).

Categorization in Phosphate Fertilizer Production

The fertilizer industry comprises nitrogen-based, phosphate-based, and potassium-based fertilizer manufacturing, as well as combinations of these nutrients in mixed and blend fertilizer formulations. Only the phosphate-based fertilizer industry is discussed here and, therefore, the categorization mainly involves two broad divisions (a) the phosphate fertilizer industry (A) and (b) the mixed and blend fertilizer industry (G) in which one of the components is a phosphate compound. The following categorization system of the various separate processes and their production streams and descriptions is taken from the federal guidelines 8 pertaining to state and local industrial pretreatment programs. It will be used in the discussion that ensues to identify process flows and characterize the resulting raw waste. Figure 7 shows a flow diagram for the production streams of the entire phosphate and nitrogen fertilizer manufacturing industry.

Structure Of The Guidelines

Secondly, the 2006 IPCC Guidelines present Agriculture, Forestry and Other Land Use in a single volume, rather than two volumes comprising Agriculture, on the one hand, and Land-use Change and Forestry on the other. This allows for better integration of information on the pattern of land use and should facilitate more consistent use of activity data (for example, fertilizer application), that affects both agriculture and other land uses, thus reducing or avoiding the possibilities for double counting or omission.

Availability Really Limit Moist Tropical Forest Productivity

This conclusion is based, at least in part, on the observation that forests on older soils show increased growth in response to phosphorus but not to nitrogen fertilization (Herbert and Fownes, 1995). But at the individual plant level, it is also often observed that climax-tree species native to both moist and dry tropical forests may show little if any growth response to increased soil phosphorus availability (Rincon and Huante, 1994 Huante et al, 1995 Raaimakers and Lambers, 1996 Veenendaal et al, 1996). Thus, as was discussed in Sec. 3.2, it may actually be that most plants adapted to low-phosphorus tropical forest soils, while having adaptions to such soils such as lower inherent growth rates and higher root-shoot ratios may not be able to substantially increase that growth in response to higher phosphorus levels (Veenendaal et al, 1996). In this context, one can still regard the low productivity of some tropical forests as being a consequence of low nutrient availability, but...

Methane consumption by soils

1990 Yavitt et al., 1990 Mosier et al., 1991 Striegl et al., 1992). In well-aerated soils, methanotrophs can use CH4 as a source of carbon and, by oxidation to CO2, as a source of energy. Globally, this oxidation represents a significant sink for CH4 (Smith and Conen, 2004). Converting native ecosystems to agricultural use tends to reduce the soil sink strength (Ojima et al., 1993 Willison et al., 1995 Dobbie et al., 1996 Prieme et al., 1997 Smith et al., 2000). Resolving the reason for this reduction is not easy because many changes occur simultaneously when native ecosystems are converted to agricultural use, but application of NH+-containing fertilizers (Mosier et al., 1991 H tsch et al., 1994 King and Schnell, 1994) and physical disturbance have been implicated as likely causes (H tsch, 2001).

Impacts Of Present And Future Climate Change And Climate Variability On Agriculture In The Temperate Regions North

The potential impact of climate variability and climate change on agricultural production in the United States and Canada varies generally by latitude. Largest reductions are projected in southern crop areas due to increased temperatures and reduced water availability. A longer growing season and projected increases in CO2 may enhance crop yields in northern growing areas. Major factors in these scenarios analyzes are increased drought tendencies and more extreme weather events, both of which are detrimental to agriculture. Increasing competition for water between agriculture and non-agricultural users also focuses attention on water management issues. Agriculture also has impact on the greenhouse gas balance. Forests and soils are natural sinks for CO2. Removal of forests and changes in land use, associated with the conversion from rural to urban domains, alters these natural sinks. Agricultural livestock and rice cultivation are leading contributors to methane emission...

Coevolution and Migration of Bean and Rhizobia in Europe

Abstract The legumes crop common bean is one of the most important crops for the human nutrition common bean is the protein basis from developing countries. Common bean presents many limitations such as the deficiencies or toxicities of minerals in soils. These limitations in common bean production regions occur throughout the world. To overcome mineral deficiencies and toxicities, common bean growers must use corrective soil amendments. Symbiotic nitrogen fixation (SNF) is important as a source of N for agriculture, because the use of nitrogenous fertilizers has resulted in unacceptable levels of water and atmosphere pollution and by nitrate and N2O emissions, contributing to the increase of greenhouse effect. The common bean grown in Europe, and other continents, is the result of a process of domestication and evolution, from wild forms found exclusively in the Americas, and it is possible to distinguish two major domestication centres, Andean and Mesoamerican centers. Most of the...

Comparison of topdown and bottomup estimates

The basis of the Crutzen et al (2008) methodology is that the newly fixed N entering agricultural systems (synthetic fertilizer-N and N from BNF) is regarded as the source of all agriculture-related N2O emissions. These emissions will not all happen in the season when fixation takes place, but will involve longer cycling crop residues ploughed in as fertilizer for a successor crop In contrast, in the IPCC approach, emissions from crop residues and mineralization are included in the 'direct' emissions and have the same EF separate EFs are used for emissions from grazing animals, and the N source here is quantified on the basis of the N excreted, and essentially is treated as a 'new' N source, not as fertilizer- or BNF-derived N (see also Chapters 5 and 6). The fractions of the N applied to fields that are lost by leaching, runoff and volatilization have additional EFs applied to them to describe the resulting 'indirect' emissions. The aggregate emissions from agriculture are arrived at...

Challenges in Favorable Agricultural Production Areas

In modern agroecosystems in favorable agricultural areas there are two main challenges. First, the current practice of high external input agriculture is not sustainable. The resulting high outputs (i.e., high yield) often come at the expense of the natural resources base (water, soils, biodiversity), both on-farm and off-farm. Yield plateaus of major crop species in high production areas have been reported, causing concern regarding the sustainability of on-farm production. The heavy dependence on agrochemicals (including pesticides and chemical fertilizers) in uniform production systems can result in the destruction of a wide array of susceptible species in the ecosystem7 and pollution of water sources. Intensive cultivation with irrigation can lead to rapid water depletion and salinization of the soil. Future as well as present generations are affected, since valuable stores of genetic resources in natural habitats may be irretrievably lost.8

Livestock Crop Bottomup Topdown manure residue

Although the Del Grosso et al (2008) paper contains too large a value for US emissions modelled by DAYCENT (see note to Table 4.4), their conclusions about the agreement at the global scale are unaffected and encouraging. The numbers demonstrate that the 3-5 per cent EF relates to agriculture as a whole - i.e. it is not limited to crop-based biofuel production. Crutzen et al (2008) focused only on crop-based biofuels because of a logical inconsistency in one of the motivations for their production, i.e. the abatement of greenhouse gas emissions by replacing fossil fuel, while at the same time introducing another, much more potent, greenhouse gas. As food production for a still-growing world population will require further increases in fertilizer nitrogen application (Erisman et al, 2008), efforts to limit N2O emissions cannot be allowed to affect production. Instead, efforts need to focus on improvement of the nitrogen use efficiency throughout the production chain. This entails...

The General Evaluation Problem

However they are produced by agriculture, and become competitive with human nutrition. Need for land may foster deforestation and stress biodiversity. Production needs would influence input of fertilizers and pesticides which may negatively affect soil and groundwater, and cause air pollution. The production of fertilizers and pesticides consumes fossil fuel. Environmental effects of biofuel production are to be considered.

Agricultural intensification

Specialised cash-crop systems A common outcome of intensification is the increase in the proportion of specialised fields, some of them devoted to high value crops. These often form part of traditional economies, yielding products which can be bartered for other materials. As more structured markets develop, these crops may become important components of the cash economy. The traditional cash crops include a diversity of fruit trees, bananas, ginger, pineapples, yams and special products like broom grass (for broom making) or bamboo (for a variety of purposes). With the coming of the industrial revolution, small-scale plantation crops of rubber, cocoa, oil-palm or coffee were incorporated in farming systems in many parts of the world. These fields often require intensive management at certain times of the year, either in field preparation, pest management, harvest or post-harvest activities. Nonetheless they arc traditionally handled internally, labour coming exclusively from within...

Model Adaptation to Local Conditions

Maize was planted each year in the computer experiment as soon as the soil in the top 30 cm of soil reached 60 of plant available water, but no earlier than June 18 to ensure adequate moisture for germination. Harvest was assumed to occur at maturity, which was simulated for each season. Plant density was set at three plants m-2 in all simulations, and row width was 75 cm. Crops simulated under CT had no manure or N fertilizer applications, and 90 of the crop residue was removed after harvest. Management of RT included application of inorganic N (40 kg ha1 applied in two doses), return of 90 of crop residue to the soil, and addition of 3 metric tons ha-1 of (dry) manure.

Simulation of Soil C Sequestration Potential RT vs CT

Two other treatments were simulated in the computer experiment to estimate how much SOC sequestration would occur under RT only (no amendments added), and under RT with 40 kg ha-1 N and return of 90 of crop residue (RT, Fl, R, no manure addition). Data in Table 16.4 indicate that yield increased under the RT only treatment, but that SOC did not increase. Although roots added C to the soil in all treatments, simulated results show that roots of maize alone would not be enough to increase SOC in this environment. For RT plus N fertilizer and residue return to the field, yield increased about the same as for RT plus all amendments, but the SOC increase was only 2058 kg ha-1, or about 60 of the amount sequestered when manure was included. Notes CT conventional tillage F 40 kg ha-1 of N fertilizer added R 90 of crop residue left on the field each year RT ridge tillage SOC soil organic carbon. Notes CT conventional tillage F 40 kg ha-1 of N fertilizer added R 90 of crop residue left on the...

Radioactive Pollution

The radioactive pollution of the environment comes partly from nuclear and coal power stations and partly from other industrial processes. That from nuclear power stations has been discussed in Section 4.5 and those from various power sources are given in Table 6.2. In addition many industrial activities use naturally occurring minerals that contain varying amounts of radioactive material. Such industries include those producing phosphorus and phosphoric acid, fertilizers, iron and steel, coke, minerals, coal tar processing, ceramics and uranium and thorium mining (Nuclear Issues 22, November 2000). Some of this radioactivity remains in the product and the remainder is discharged into the sea or buried underground. The total amount of radioactivity discharged into the oceans is estimated to be about 0.1 EBq, compared with the amount already there of about 10,000 EBq.

Emission Factor of Nitrogen for N2O

The fertilizer-induced emission factor of N2O in the present study was, on average, 0.42 for the water regime of F-D-F and 0.73 for the F-D-F-M. Obviously, these estimated emission factors of N2O in rice paddies are significantly lower than the IPCC (1997) default factor of 1.25 or estimates in upland croplands in this area (Zheng et al. 2004). Yan et al. (2003) estimated that N2O emission factors and background emissions averaged 0.25 and 0.26kgN2O-N ha-1 in the rice growing season, respectively. However, they did not distinguish N2O emissions under different water regimes in rice paddies. In contrast, Akiyama et al. (2005) recently reported that the EFs averaged 0.22 for the continuous flooding rice paddies and 0.37 for the fertilized paddies with mid-season drainage. These estimates rep resent the mean of 16 and 23 emission factors directly measured from field studies in which both nitrogen and no-nitrogen treatments were designed, respectively. As the authors pointed out, seasonal...

Changes During Conversion

The transition from conventional to organic and low-input farming is accompanied by changes in an array of soil chemical properties and processes that affect soil fertility. Fundamental differences, both qualities and quantitative, in the flow and processing of nutrient result from the use of cover crops, manure and compost applications, and reduction or elimination of synthetic fertilizers and pesticides. These changes affect nutrient availability to crops either directly by contributing to nutrient pools or indirectly by influencing the soil chemical and physical environment.

Precipitation Flocculation

Occurs in three or four stages in purification towers with a separation device for the solids (biomass) and biomass recirculation. The resulting wastewater has a BOD5 of 2000 mg L. The fourth phase consists of the filtration of the wastewater, ultrafiltration, and reverse osmosis. The concentrated and thickened sludge from the previous phase is then dried by means of band filters for further use as fertilizer.

Potato Processing Wastes as Soil Conditioner

Potato processing solid wastes are often applied to agricultural land as a disposal medium. Research supports this method 68 . Solid potato processing wastes containing nitrogen are obtained by filtering or centrifuging the settled solids from the primary clarifiers. Wastes are applied to land and used for crops, which utilize the applied nitrogen. The soil does not accumulate the nitrogen or other organic waste and becomes increasingly fertile with continued wastewater application. Additionally, potato processing wastewater was found to be effective in promoting corn growth as effectively as commercial ammonium nitrate fertilizers, when applied at optimum nitrogen levels 69 . Applying wastewater and solid wastes from potato processing provides an effective method of applying reusable nutrients that would be otherwise wasted, and thus reduces pollution levels in municipal waterways.

Policy Relevance and Legitimacy

An example of the different role of these mechanisms is provided by emissions of sulfur dioxide. Indicators presented in the OECD report on decoupling (OECD 2002) show an absolute decoupling of sulfur dioxide emissions from energy production (e.g., as a result of regulations on and incentives for the use of low-sulfur fuels) in nearly all OECD countries. This decoupling partly reflects the reduction in energy use from GDP (e.g., through greater energy efficiency or shifting demand to less-energy-intensive goods and services). Another example of the role of these different mechanisms is provided by discharges of nitrogen in the future, these could be decoupled from conventional agricultural production (aiming at less and better use of nitrogenous fertilizers) as demand shifts toward ecolabeled products or low-meat diets. Similarly, the negative environmental impacts of waste can by reduced by technologies that minimize the release of dioxins from incineration and the leaching of...

Impact of climate change

Hotter, drier summers increase the risk for wildfires as well as droughts, and flooding could be caused by rapid snowmelt in the spring. More severe summer downpours could lead to more frequent flash flooding. Flooding increases the possibility of contamination of water supplies by sediment erosion, and also increases levels of pesticides and fertilizers and runoff from grazing, mining, and urban areas. The yields of some crops like wheat and sorghum would decrease as temperatures rise over the tolerance level for optimal growth. With less water available for irrigation, farming on the whole could decrease as well.

Impacts of climate change

Although there is some level of certainty associated with increasing temperature and climate change, predictions of rainfall change are far less clear. It is evident that there will be some regions where rainfall will increase and seasonal patterns will change, and other regions where rainfall will decrease. These changing patterns of rainfall will affect N2O emissions, particularly where associated with extreme events such as protracted droughts (for example in Australia) and extreme flooding. For example, N fertilizer use in southern and eastern Australia has decreased since 1997 with decreasing rainfall. This has inevitably resulted in less total N2O emission, but also The net effect of warmer winter temperatures, higher plant growth rates under elevated CO2, and PNL may mean that more N fertilizer is applied to crops and pastures in the future. This increased N input may well result in greater N2O emissions in areas with increased rainfall, but may have limited impact in regions...

Nitrous Oxide And Global Warming

Global warming is believed to be due to the increased use of fossil fuel resources, the production of industrial chemicals, and the use of chemical fertilizers. Among the greenhouse gases that are produced by burning fossil fuels and the use of chemical fertilizers, carbon dioxide is the gas most associated with global warming however, nitrous oxide is also implicated. It is believed that N2O is the cause of about 6 percent of current global warming. The amount of nitrous oxide in the atmosphere is of great concern, because a molecule of nitrous oxide can absorb over 300 times the amount of infrared energy absorbed by a carbon dioxide molecule. This means that a much smaller amount of nitrous oxide can contribute immensely more to global warming than carbon dioxide. A small increase in the level of nitrous oxide in the atmosphere can have a major impact upon the global environment. Other sources of nitrous oxide are burning vegetation, gasoline engine exhaust that is reduced with a...

Policy instruments for mitigation

In the New Zealand case, the main question relates to the feasibility of moving the point of obligation for holding emissions permits from farmers onto other parts of the food chain that are more easily monitored. In this case fertilizer manufacturers appear to be the prime target for inclusion in a trading scheme. It is currently unclear how acceptable this suggestion is to the industry or how effective this approach will prove. In the UK exploratory work funded by Defra is considering the relative merits of alternative trading schemes for livestock producers and fertilizer merchants. Alternative approaches include the introduction of specific emissions obligations under forms of cross compliance, or a specific agricultural climate change agreement that would entail a climate change levy on producers with rebates for those signing-up and complying with good practice agreements. The agricultural sector includes GHGs from pastoral agriculture, horticulture and arable production methane...

Greenhouse gas emissions from the production side

When we focus on other greenhouse gasses, we find that the agricultural sector plays an important role with respect to the emissions of CH4 and N2O. Figures 12.2 and 12.3 show these emissions by sector. Nearly 50 of the national N2O emissions occur in agriculture. This is mainly due to de-nitrification processes in soils resulting from application of manure and chemical fertilizers. Emissions from grasslands (dairy production) hold the largest share. A large part of the N2O emitted in industry is also associated with agriculture the production of chemical fertilizer involves substantial emissions of N2O (Kramer, 2000).

Franz Conen and Albrecht Neftel Introduction

World population has quadrupled during the 20th century. This has been accompanied by a dramatic increase in agricultural productivity, based to a major extent on industrial nitrogen fixation by the Haber-Bosch process developed at the beginning of that century. From a global perspective, population growth was, and still is, larger than the growth in agricultural productivity per unit land area. Consequently, agriculture continues to expand into previously pristine ecosystems. Also, emerging and growing demands for new products, such as biofuels from sugar cane, maize or palm oil, result in land-use changes. Increasing affluence in many parts of the world boosts demands for meat and milk products, driving a conversion of large areas of tropical forests into grasslands and soya bean fields. Land-use change has also taken place in temperate and boreal regions, where pristine grasslands have been converted to cropland, and wetlands have been drained to establish commercial forestry,...

Quality Assurance and Quality Control

Activity data check The inventory agency should, where possible, check data comprising of all managed land areas, using independent sources and compare them. For many countries, FAO database could be the main source and in such a case the data must be cross-checked with other sources. Any differences in area records should be documented for the purposes of review. Activity data area totals should be summed across all land-use categories to ensure that total area involved in the inventory and its stratification across climate and soil types remains constant over time. This ensures that Forest Land areas are neither 'created' nor 'lost' over time, which would result in major errors in the inventory. When using country-specific data (such as data on standing biomass and biomass growth rates, carbon fraction in above-ground biomass and biomass expansion factors, and synthetic fertilizer consumption estimates), the inventory agency should compare them to the IPCC default values or the...

Conversion of grassland to cropland

They assumed that mineral N liberated by mineralization of soil organic matter and plant remains, following land-use change, can be regarded as a comparable potential source of N2O to N being applied in the form of synthetic N fertilizer. The IPCC (2006) has subsequently adopted the same approach, in which the NH4+ and NO3 resulting from the mineralization of soil organic matter following a change in land use is deemed to be of the same value as a substrate for microorganisms producing N2O by nitrification or denitrification as the NH4+ and NO3 in an application of synthetic N fertilizer. By way of illustration, Smith and Conen (2004) applied this approach

Drainage and cultivation of organic soils

Drainage of organic soils and associated effects on N2O emissions have been well documented in Scandinavia. Weslien et al (2009) describe the historical development in Sweden, where in the 1930s around 0.65-0.70 x 106ha of organic soil were farmed. Economic and political reasons led to the abandonment of 0.40-0.45 x 106ha by the 1990s. Nowadays, most of the abandoned area is probably under forest. Alm et al (2007) describe an even more dramatic situation in Finland. Of the original 10.4 x 106ha of pristine ecosystems, 5.4-5.7 x 106ha have been drained for forestry and 0.7-1.0 x 106ha for agriculture. Further major areas of drained organic soils are found in the Baltic states and in Russia (Rydin and Jeglum, 2006). Emissions of N2O from drained organic soils are, per unit area, much larger than those discussed for tropical forests in the first section. The IPCC (2006) default value for temperate organic crop and grassland soils is 8kg ha-1 yr-1 with an uncertainty envelope of 2-24kg...

Toward Sustainability Of Agrolandscapes

Urban areas contain human and natural resources that once again must become integrated with the agrolandscape to the extent that the city can be sustained by both economic capital (gross national product, employment, property values) and natural capital (primary productivity, biotic diversity, solar energy, and sludge usage as natural fertilizers). We refer to this perspective as dual capitalism. Economic and ecological capital must become integrated otherwise the resulting oxbow urban areas will increasingly become drained of aesthetic and natural resources. Ecosystem processes will increasingly become disconnected and or diminished from the vital flow of energy, information, or biotic diversity that once connected the landscape system as an integrated whole.

Reporting and Documentation

In general, it is good practice to document and archive all information required to produce the national inventory estimates. For Tier 1, inventory compilers should document activity data trends and uncertainties for croplands. Key activities include land-use change, use of mineral fertilizers, agroforestry practices, organic amendments, tillage management, cropping rotations, residue management (including burning), irrigation practices, extent of mixed cropping systems, water management in rice systems, and land-use change.

The atmospheric source

The atmosphere acts as a source for N2O through the oxidation of ammonia (NH3). In total, atmospheric NH3 oxidation is thought to be responsible for 0.6 Tg N2O year. Again the line between natural and anthropogenic sources is blurred. The primary sources of atmospheric NH3 are human-made, with the largest increases in emissions in recent decades being due to increased global livestock farming. Ammonia is emitted from both solid and liquid livestock waste through volatilization and can also induce N2O production in soils by deposition after its initial release. Plumes of ammonia can often be detected arising from intensive livestock-rearing facilities, such as poultry and pig farms. Fertilizer application and agricultural chemical use are also significant sources of atmospheric ammonia, as is fossil fuel-powered transport.

The natural soil sources

Over large areas of otherwise pristine soil. Rates of N2O from such soils at all latitudes are also likely to change in response to variations in temperature and rainfall resulting from global climate change. Ensuring that fertilizers do not end up on natural soils, whether directly or indirectly, makes sense both environmentally and economically.

Choice of activity data

Management activity data supplement the land-use data, providing information to classify management systems, such as stocking rates, fertilizer use, irrigation, etc. These data can also be aggregate statistics (Approach 1) or provide information on explicit management changes (Approach 2 or 3). It is good practice where possible for grassland areas to be assigned appropriate general management activities (i.e., degraded, native, or improved) or specific management activities (e.g., fertilization or grazing intensity). Soil degradation maps may be a useful source of information for stratifying grassland according to management (e.g., Conant and Paustian, 2002 McKeon et al., 2004). Expert knowledge is another source of information for management practices. It is good practice to elicit expert knowledge, where appropriate, using methods provided in Volume 1, Chapter 2 (Annex 2A.1, A protocol for expert elicitation).

Year United States dollarSoviet Union ruble

The Soviet leader used all the power and propaganda of the state to promote the program. Lenin's injunction that Communism is the Soviet system plus the electrification of the entire country was altered to read Communism is the Soviet system plus the electrification of the entire country, plus the chemicalization of agriculture (Goldman, 1968). This program called for an expenditure of 104 billion rubles (133 billion dollars) for seven years for the expansion and modernization of the USSR's chemical industry in order to obtain the fertilizers. The Soviet leader said this was needed in order to make the USSR self-sufficient in agricultural production (Kiselev and Shagin, 1996). It was planned to supply the farms with 72 million tons of fertilizers by 1975, almost three times more than in 1965. The Soviet Union intended to increase production of phosphate and nitrogen fertilizers as well as artificial protein substitutes for feeding cattle. Western know-how was a crucial factor in the...

Year United States Soviet Union

There were also some improvements in agricultural practice in the steppe zone of the USSR. The exploitative nature of Khrushchev's style of farming (Stalin, by contrast, was an advocate of grasslands, as it proved to be a substitute for chemical fertilizer), with its emphasis on grain and corn growing at the expense of soil conservation practices, was rejected. The bitter lessons of the virgin lands proved to the Soviet authorities that grain crops depleted the soil and actually promoted soil erosion, while grassland farming was soil conserving. The measures undertaken by the Soviet authorities relied on the experience of Western farmers, mainly from Canada. In the 1960s, in the virgin lands of Kazakhstan and Western Siberia, average yields reached 7 to 8 centners per hectare, while in the steppe districts of Canada an average yield was 16.7 centners per hectare at that time (Problemy sel'skogo khozyastva, 1967). It is worth stressing that financial and material support from the state...

Integrated Soil Nutrient Management

Declines in soil productivity can be attributed, in part, not only to the quantities of nutrients removed by plants compared to the quantities of nutrients being put back into the system, but also to the unavailability of nutrients in soils due to soil environments such as soil pH, leaching, mineralization, and other processes. Extensive agricultural production with tillage encourages continuous mining of SOM and release of N. Soil organic matter has a C N ratio of 11 1 thus, sequestration of SOM requires high opportunity cost of N. Therefore, symbiotic N2 fixation through the use of legumes seems the most likely cost-effective means of achieving this N input (Olness et al., 2002). Further, addition of plant nutrients through chemical fertilizers and organic amendments may be necessary to set in motion the restoration of these highly depleted soils. The SOC content cannot be improved without availability of additional quantities of N, P, and K in soils of low...

Approaches To Valuing Genetic Diversity For Agroecosystems

Single variety with the highest net returns. But other explanations from economic theory have been invoked to explain partial adoption. The most widely accepted explanations involve (1) differentiation of varieties, such that different varieties are in fact seen as different commodities, with partial adoption explained by some of the same factors that explain species diversity (2) farmers' risk aversion, resulting in portfolio diversification or disaster avoidance (3) fixity or rationing of seed-related production inputs such as fertilizer, soil type, or credit and (4) learning behavior or experimentation.

N2O emissions from each sector and their trends

In 1985, when crop N2O emissions were highest, paddy rice (4,714 Mg) was the largest source of N2O and forage crops (3,376 Mg) the second highest, because these crops occupied about 60 of farmland (Fig. 40.4). In 2005, when N2O emissions were lowest, 70 of N2O came from paddy rice (2,770 Mg), vegetables (2,810 Mg), and forage fields (2,850 Mg). Over the study period, the area of paddy rice declined from 27 to 23 and that of vegetables increased from 17 to 23 . N fertilizer input to paddy rice declined from 114 to 72 kg N ha-1 and N fertilizer input to vegetables increased from 180 to 201 kg N ha-1. Tea comprised 10 to 13 of total crop production of N2O emissions during the period. Although the area planted in vegetables and tea was small (12 and 1 of total planted area in 2005, respectively), vegetables and tea were significant sources of N2O. This result shows that vegetables and tea are hotspots of N2O emissions in the crop production sector, because of the higher chemical N...

Major developments in agriculture

First of all, these regions required enormous capital investment. The new program included land reclamation projects (irrigation and drainage) as well as the application of more agricultural chemicals, the construction of livestock complexes, the creation of a transport network, and the resettling of small villages as non-prospective . The share of the gross fixed investment in agriculture in the zone was planned to grow from nearly 15 percent of the total figure for Soviet agriculture during 1971 to 1975, to just over 20 percent during 1976 to 1980. Fertilizer deliveries to the zone were to increase from 21 percent to 26 percent of the total fertilizer deliveries for Soviet agriculture as a whole (Severin and Carey, 1978). The main challenges for the plan were the depressed state of local farming and labor shortages.

Other Face Experiments

Both FACE and closed-chamber experiments show that the greatest benefits from CO fertilization come when the crops arc well supplied with mineral fertilizers, which enable them to construct more tissues using the extra carbon that they fix. This response will probably increase global food production, but it will be concentrated in certain parts of the world. The increased yield is thus likely to favor richer farmers who can already afford plenty of fertilizer to put on their crops, rather than the poorest farmers in the Third World.

Completeness Time series QAQC

Multiply by 44 12 to convert CO2-C emissions into CO2. Urea is often applied in combination with other nitrogenous fertilizers, particularly in solutions, and it will be necessary to estimate the proportion of urea in the fertilizer solution for M. If the proportion is not known, it is considered good practice to assume that the entire solution is urea, rather than potentially under-estimating emissions for this sub-category.

Sealevel Rise and Climate Change

Similarly, in tackling the growing problem of eutrophication of surface waters due to fertilizer runoff and leaching, interception strategies such as wetlands, buffer strips and ponds may increase N2O and CH4 emissions where they are used - swapping a nutrient pollution problem for a climate change issue.

The Effect Of Mineral And Biological Nitrogen On Microbiological Traits Of Smonitza And Maize Yield

The study results showed that the numbers of microorganism groups were affected by the type and rate of fertilizers applied, as well as by the time and sampling zone. The application of Azotobacter chroococcum, strain 84, resulted in an increase of the total numbers of microorganisms, actinomycetes and azotobacters, especially in the rhizosphere soil at the onset, and even in the middle of maize vegetation. Lower rates of nitrogen fertilizers (90 and 120 kg ha 1) led to a significant increase of total bacteria numbers, as well as an insignificant change in azotobacter numbers, whereas their high rate (150 kg ha 1) had a depressive effect on the mentioned microorganisms, particularly in the edaphosphere of maize. In contrast, actinomycete numbers were not reduced even with this nitrogen treatment. Cowpea is an important grain crop in Venezuela. However, local varieties do not respond to Rhizobium inoculation. Nodulated plants always produce a smaller biomass and lower yields. Thus,...

CO2 Capture and Storage

The flue gases before they are emitted to the atmosphere. Precombustion capture is used in the gas industry - separation of CO2from natural gas before being used. It is also used in the manufacture of fertilizers and in the production of hydrogen. Such precombus-tion capture is generally easier given the higher concentrations of CO2 involved compared to those in flue gases. The use of oxy-fuel combustion is still being developed, but in essence it involves the burning of fossil fuels in high-purity oxygen to produce CO2 concentrations in the exhaust gases that are much higher than normal, thus allowing easier CO2 separation.

It 1995rm00298 10051995

Procedimento di trattamento per acque di vegetazione derivanti da lavorazioni di prodotti alimentari e prodotti fertilizzati ottenuti utilizzando le acque depurate mediante detto trattamento delle di vegetazione. Process for the treatment of vegetation waters derived from processing of alimentary products and fertilizers obtained by using the wastewater by means of said treatment Process of absorbing, on a solid matrix, vegetation effluent water from oil crushers

Role and Applications of Crop Simulation Models

Type, amount and date of application for any fertilizers A single set of runs can be compared to equivalent runs using unadjusted weather, thus providing one estimate of the potential impact of climate change on economic yield or a diverse range of other traits. None the less, such a comparison ignores the potential that producers will adapt their practices to the changing environment. We examine two hypothetical cases, one for soybean and planting dates and one for maize and N fertilizer response, to illustrate a few of the issues that may be relevant. Both studies assume an increase in CO2 from 380 ppm (the approximate level in 2005) to 580 ppm.

Design Application Rates

Application Rates Based on Nitrogen Regular nutrient analyses of biosolids provide the database for the nitrogen-based application rate for a particular source of biosolids. Biosolids application rates are typically calculated to supply the available nitrogen provided by commercial fertilizers. Plant-available nitrogen in biosolids can be estimated using the equation

Earlier IGsEarlier IGs

Through time, as increases in local population densities reduced the amount of available land, farmers were forced to shorten the fallow period. At some point, with still-ongoing population increases, farming became restricted to the same plot of land every year (annual cropping). They began to make use of technological innovations that increased yields per acre, including improved plows, livestock traction, irrigation, and fertilizers. Ultimately, many farmers began rotating two or more crops per year in the same field and developing sophisticated and extensive irrigation systems. Despite the benefit of iron tools and other new technology, this later phase of intensive farming required very large amounts of labor per person collecting and spreading manure and compost, tending the livestock that supplied most of the manure, eliminating weeds and insects, maintaining irrigation canals, and other such efforts.

The Future Direct C02 Effect A Good Or A Bad Thing For The Natural World

However, it is not certain that increasing C02 will make it easier for large numbers of species to coexist. It is fairly widely established in ecology that if vegetation grows too vigorously, stronger species can triumph and push the weaker ones out. For example, throwing a mineral fertilizer on a grassland will often cause a crash in the species richncss of the plant community, as a few fast-growing species that respond particularly well to fertilizer push all the others out. At lower nutrient levels, all spccics grow relatively slowly but are fairly evenly matched against one another in competition none can push the others out. The fear is that increasing C02 will act as a fertilizer in just the same way, causing plant communities all around the world to undergo a burst of growth that will eliminate many weaker species. The result might be massive-scale extinctions of plant species and the insect and fungal life forms which depend upon them. 'The tropical rainforests could end up...

Reuse of Urban Wastewater in Environmentally Protected Areas The Case Studies of Messolonghion Lagoon Greece

Abstract The lagoon of Messolonghion is a fragile ecosystem that is protected as a Nature wetland under the Ramsar Treaty. The need for environmental protection of the wetlands has proven to be necessary because of continued human interference as well as climate changes recorded in recent years. Studies show that the lagoon of Messolonghion is an ecosystem that has been burdened by human activities (pesticides, fertilizers, overexploitation of underground aquifers, intrusion and land use change), and also by climatic changes (temperature, precipitation, sea level). Human activities and climatic changes together adversely affect the hydrodynamic and ecological balance of the entire ecosystem. The Messolonghion lagoon ecosystem is also the recipient of the effluent output of the locally operating Wastewater Processing Plant (WWTP), and has been over-enriched in macro-nutrients N, P, K. The potential of urban wastewater reuse for soil and crop irrigation in the protected area appears to...

Beneficial Use Of Biosolids In Russia

In Russia, long-term research and development of sludge treatment prior to land application was conducted with the principal author's participation and under his direct management (Turovskiy, 1999). The following organizations took part in that research All-Union Research Institute of Water Supply and Sewage System, Russian Municipal Academy, Institute of Municipal Hygiene, Research Institute of Hygiene, Institute of Medical Parasitology and Tropical Medicine, Institute of Fertilizers and Agricultural Soil, Science Medicine Institutes, Agricultural Institutes of the Former Soviet Republics, and several wastewater treatment plants. The studies were performed with various types of sludge, such as raw sludge, aerobically digested sludge, anaerobic meso-philic and thermophilic digested sludge, mechanically dewatered sludge, and sludge dried on drying beds, from more than 100 wastewater treatment plants. Parameters analyzed included pathogenic bacteria, viruses, heavy metals, and helminth...

Issues in Impact Assessment

Economic analysis of adaptation generally follows a path of investigation that considers those options that could be used to ameliorate losses without increasing costs. Once this baseline impact is established, further analysis of changing markets identifies whether commodity prices would increase or decrease as a result of changes in yields around the world. Then the analysis considers technological options and assumes that only those that would improve profitability are adopted. The following general classes of technological options show promise in ameliorating agricultural losses changed sowing dates multiple crops per growing season planting of different crops or different crop varieties development of new crop varieties use of irrigation changes in fertilizer use and tillage practices and improved short-term weather forecasting (Reilly et al., 1996).

Research needs to improve the quantification

Strength itself is not relevant, except for the deviation from the natural base line. IPCC estimates of biogenic GHG emissions thus focus on sources that are directly influenced by human activities, such as fertilizer-induced N2O emissions from agricultural soils while N2O emissions from forests are accounted for as indirect emissions (currently only related to effects of agricultural NH3 emissions and not to NOX emissions). In this context, it is important to establish an improved linkage between anthropogenic nitrogen deposition and atmospheric nitrogen emissions by using improved large-scale atmospheric dispersion models. This aspect is also foreseen in the Nitro Europe project. Only when the information about the impact per unit of nitrogen deposited on the CO2, N2O and CH4 emissions - positive or negative (sink) - is properly linked to nitrogen emitted by anthropogenic sources can the potential impact of changes in nitrogen emissions on GHG emissions be quantified.

Recommendations on Adaptations

Improvement of carbon sequestration is required from agriculture and forestry by adopting permanent land cover, utilizing conservation tillage, reducing fallow land in summer, incorporating rotations of forage and improving nutrient management with fertilizers. 5. Improved nutrient management with suitable fertilizers will aid the sequestration of carbon.

Nonblood derived meat coproducts

When meat animals are processed, considerable quantities of trim are produced which is sorted according to the lean meat content and sold to sausage makers or ground for hamburger meat. Surplus fatty trimmings are rendered to recover the fat from beef and lard from pork as tallow (Clark, 2005). Rendering involves cooking, usually by direct steam injection, followed by centrifugation and drying of the fat and protein fraction. The protein from edible rendering can be used in animal feeds, while that from inedible rendering can be used as a fertilizer. Tallow and lard are used in baking and frying, although recent nutritional concerns with respect to saturated fats are affecting their use. The aqueous phase from the above centrifugation step is usually called 'stick water' and may be concentrated as a source of beef flavour. If the 'stick water' is not concentrated, it can represent a significant waste disposal challenge (Clark, 2005). MBM contains appreciable amounts of nitrogen (N),...

Impact of Soil Management Practices on the Net GHG Fluxes

To calculate changes in soil C stock (0-20 cm depth) and stabilization of the soil organic C pools, the CENTURY model was run from 1910 to 2029. Crop production yields were calibrated for each run. Management practices, including tillage, fertilizer addition, etc., were taken from the work by Smith et al. (1997). The DNDC model was run for the period between 1970 and 2029. Weather data for the 1970-1999 period were obtained from weather stations close to each site. The same weather data were used to simulate the weather for the next 30-yr period (i.e., 2000 to 2029). A description of the soils, fertilizer application and climate at the 5 sites (Table II) is as follows 1. The Dark Brown Chernozem soil at the Lethbridge, Alberta site has a sandy clay loam texture changing to a clay loam below 30 cm depth. A rotation of wheat-wheat-fallow was simulated with a fertilizer application of 15 and 40 kg ha-1 N applied in the 1st and 2nd year of the rotation, respectively. Long-term annual...

The Sludge Pasteurization Process

Way Solenoid Symbol

In the United States procedures to reduce the number of pathogenic organisms are a requirement before sale of sludge or sludge-containing products to the public as a soil conditioner, or before recycling sludge to croplands. Since the final use or disposal of sludge may differ greatly with respect to health concerns, and since a great number of treatment options effecting various degrees of pathogen reduction are available, the system chosen for the reduction of pathogens should be tailored to the specific application. Thermal conditioning of sludge in a closed, pressurized system destroys pathogenic organisms and permits dewatering. The product generally has a good heating value or can be used for land filling or fertilizer base. In this process, sewage sludge is ground and pumped through a heat exchanger and sent with air to a reactor where it is heated to a temperature of 350-400 F. The processed sludge and air are returned through the heat exchanger to recover heat. The...

The Future Direct Co2 Effect A Good Or A Bad Thing For The Natural World

Even if rainforest does turn out to grow more lush and cover larger areas, it is not certain that increasing C02 will make it easier for large numbers of species to coexist. It is fairly widely established in ecology that if vegetation grows too vigorously, stronger species can triumph and push the weaker ones out. For example, throwing a mineral fertilizer on a grassland will often cause a crash in the species richness of the plant community, as a few fast-growing species that respond particularly well to fertilizer push all the others out. At lower nutrient levels, all species grow relatively slowly but are fairly evenly matched against one another in competition none can push the others out. The fear is that increasing C02 will act as a fertilizer in just the same way, causing plant communities all around the world to undergo a burst of growth that will eliminate many weaker species. The result might be massive-scale extinctions of plant species and the insect and fungal life forms...

Quality Assurance Quality Control QAQC Reporting and Documentation

European Fertilizer Manufacturers' Association, Best Available Techniques for Pollution Prevention and Control in the European Fertilizer Industry Production of Ammonia, Booklet No. 1 of 8, European Fertilizer Manufacturers' Association, Brussels. EFMA (2000b). European Fertilizer Manufacturers' Association, Best Available Techniques for Pollution Prevention and Control in the European Fertilizer Industry Production of Nitric Acid, Booklet No. 2 of 8, European Fertilizer Manufacturers' Association, Brussels. EFMA (2000c). European Fertilizer Manufacturers' Association, Best Available Techniques for Pollution Prevention and Control in the European Fertilizer Industry Production of Urea and Urea Ammonium Nitrate, Booklet No. 5 of 8, European Fertilizer Manufacturers' Association, Brussels. van Balken, J.A.M. (2005). Personal communication from J.A.M. van Balken (European Fertilizer Manufacturers Association).

Diversity of Microbes

It was found that the percentage of root length colonized by AMF was 30-60 higher in low-input farming systems than in conventionally farmed soils. Variation of AMF root colonization was explained by chemical properties of the soils especially the effect of soluble soil P being most pronounced (Mader et al. 2000). In another study in Central Europe it was found that AMF spore abundance and species diversity was significantly higher in the organic than in the conventional systems (Oehl et al. 2004). Mineral fertilizer can have a profound negative effect on AMF, as reported by Galvez et al. (2001), who found less spore in mineral-fertilized soil than in organic soil. Gryndler et al. (2006) found that mineral fertilization reduced the growth of AMF, as estimated, using both measurements of hyphal length and the signature fatty acid 16 1w5, whereas manuring alone increased the growth of AMF. Some species of AMF may even be severely depressed by conventional management (Oehl et al. 2004)....

GIS and Hydrologic Models

Digitized Images Gis

Water quality modeling applications using remote sensing and GIS have concentrated mainly on non-point source (NPS) pollution. To date, several water quality models (AGNPS, ANSWERS, USLE, export coefficient model, etc.) have been interfaced with GIS. The spatially distributed agricultural non-point-source (AGNPS) model integrated with GIS (Srinivasan and Engel, 1994) allows modelers to handle each point source, pesticide, and channel information in a decision support system, WATERSHEDSS (Water, Soil, and Hydro-Environmental Decision Support System) (Osmond et al., 1997). Using such a system, one can determine critical areas within a watershed and evaluate effects of alternative land treatment scenarios on water quality. Mattikalli et al. (1996) implemented an export coefficient model within a vector-based GIS to quantify spatial and temporal changes of total nitrogen loading in surface water as a response to changes in watershed land use, management, and fertilizer application rates....

Agricultural Sequestration

Carbon sequestration occurs in soils and agricultural crops mainly through the natural process of photosynthesis. Half of the agriculture biomass is composed of carbon. When the vegetation decays, the litter and roots also contribute carbon to the soil. When agricultural fields are plowed, CO2 can be released to the atmosphere. The amount of carbon in cropland soils can vary depending on types of crops, types of fertilizers used, and type of management practice (such as conventional or conservation tillage). These variables can also determine the presence of other greenhouse gases such as methane and nitrous oxide, which have greater global warming potentials than CO2.

Potential For Sequestering Soil Organic Carbon In Zambia Soils

The SOC contents in most agricultural soils are below their potential levels, especially soils in developing agricultural systems (Lal, 1999). Carbon content of Zambian soils is low, ranging between 0.5 to 1 organic C (Singh et al., 1990), with an average of 0.8 (Silanpaa, 1982). In the three agro-ecological regions of Zambia, benchmark data of organic C content (Table 25.1) range from a low of 0.15 to 1.11 for bottom soils (38- to 70-cm depth) to a high of 2.45 to 3.0 for topsoils (0- to 8-cm depth) of clay soil (Lungu and Chinene, 1999). Other soil texture types show similar variations. When cultivated, these soils rapidly lose considerable amounts of organic C. The historic SOC loss can be regained by converting to an appropriate land use and adopting recommended agricultural practices (Lal, 1999). These include conservation tillage, mulch farming, cover crops, INM consisting of widespread use of biofertilizers for soil fertility replenishment, crop rotation, use of multipurpose...

Lipochitooligosaccharides and Controls on Crop Production

Enhancement of plant photosynthesis due to B. japonicum soybean associations has been reported. Imsande (1989a,b) reported increased net photosynthesis and grain yield in soybean inoculated with B. japonicum as compared with plants not inoculated but adequately supplemented with N fertilizer. Thus it seems probable that rhizobial associations enhance photosynthesis and that this might be mediated by signal molecules. To test the hypothesis that LCO is responsible for the increased photosynthesis a series of experiments were conducted in the greenhouse and in the field. Spray application of LCO at submicromolar concentrations enhanced the photosynthetic rates of soybean, maize, rice, bean, canola, apple and grapes. On average there was a 10-20 increase in the photosynthetic rate and this was concomitant with an increase in stomatal conductivity and constant or decreased leaf internal CO2 concentration. Under field conditions, spray application of LCO at concentrations of 10 6, 10 8 and...

Economy Of Treatment Processes

As previously discussed, it is important from an economic perspective to develop profitable uses for the final waste product, such as organic fertilizer, soil conditioner, and livestock feed. In this regard, it is worth pointing out that an opportunity exists to obtain a new type of renewable and low-cost activated carbon (J-carbon) from the processed solid residue of olive mill products. This is due to the fact that olive mills generate a huge amount of waste, which can be suitable as a raw material with economic value, and as a supportive means for pollutant removal from wastewater 98 . A study was performed to compare the capability of J-carbon with commercial activated carbon to remove ammonia (NH3), total organic carbon (TOC), and some special organics from Flexsy's (Rubber) wastewater treatment plant as tertiary treatment 99 .

Role Of Arthropods In Ecosystem And Agriculture

Populations of weeds, insects, and pathogens and genetic manipulation replaces natural processes of plant evolution and selection. Even decomposition is altered since plant growth is harvested and soil fertility maintained, not through nutrient recycling, but with fertilizers.

Strategic Program to Reduce Greenhouse Gas Emissions from Food Industry

Energy resources are closely linked with the development of agriculture sector. Therefore, energy is a particularly significant input in the so-called 'industrial' food and farming systems, with farm systems based on synthetic external inputs and producing for the processing or global markets (i.e., several manufacturing stages and long transport distances) (Ziesemer, 2007). Agriculture and food processing systems play an important role to increase the fossil fuel consumption and climate change because of their significant energy use and agriculture's potential to serve as a sink for the negative externalities of energy use. In food industry, energy is used not only in planting, cultivating, and harvesting the agricultural products, but also in manufacturing and transporting the inputs, such as pesticides, fertilizers, and machinery and in processing, packaging, and distribution of final products. In terms of energy consumption, the food supply chain including production, processing,...

Effect on N2O emissions

Assessing the influence of tillage systems on N2O emissions is not straightforward. Farming systems include a complex mix of tillage tools, timings and frequencies, combined with variations in fertilizer and residue management and crop type, all interacting with local climate, topography and soil type. Soil conditions in NT systems differ from those in tilled systems in several ways SOC and microbial biomass tend to be concentrated near the surface because residues are not buried bulk density and aggregation are often higher, affecting oxygen diffusion and surface moisture may be higher, suppressing oxygen because higher microbial activity consumes oxygen and air-filled porosity is lower. Linn and Doran (1984) reported that counts of denitrifiers in the surface of NT soils were several-fold those in CT soils. These factors may favour gaseous nitrogen loss via denitrification. Tillage tends to favour decomposition and nitrification by disrupting soil aggregates and exposing physically...

Features of Agriculture and Forestry in the Humid and Sub Humid Tropics

Unfit for crop production as a result of improper management, such as nutrient loading from fertilizers, water contamination from pesticides and herbicides, and waterlogging and salinization. ideal conditions, such as a compatible association of trees, annual crops and animals, these systems offer multiple agronomic, economic, environmental, and socioeconomic benefits for resource-poor small-scale farmers, including enhanced nutrient cycling, fixing of atmospheric nitrogen through the use of perennial legumes, efficient allocation of water and light, conservation of soil, natural suppression of weeds, and diversification of farm products (Lal, 1991). It is important to note, however, that trees have both positive and negative effects on soils. Negative effects include growth suppression caused by competition for limited resources (nutrients, water, and light). Mismanagement of trees (for example, through improper fertilizer application or inadequate water control) can also cause soil...

The Silicate Tetrahedron

Silicate Tetrahedra

Silicates are the most abundant rock-forming minerals, but other types do occur in sufficient quantities to call them rock-forming minerals. oxides use the oxygen anion and include ore minerals such as chromium, uranium, tin, and magnetite (Feo4). sulfides are minerals such as pyrite, copper, lead, zinc, cobalt, mercury, or silver that combine with the sulfur anion. For instance, Fes2 is the formula for pyrite, commonly known as fool's gold. The carbonates calcite, aragonite, and dolomite form with the complex carbonate anion (Co3)2-. Phosphates are formed using the complex anion (Po4)3-. An example is the mineral apatite, used for fertilizers, and the same substance as that which forms teeth and bones. sulfate minerals are formed using the complex sulfate

Biological Pest Control In Mix And Match Forests

The least simplified end of this spectrum is anchored by the native forest, in a lightly exploited or virgin state. In this condition, logging is followed by natural regeneration of local native trees. There is no use of fertilizers or herbicides to suppress competing vegetation. Present management of the mixed hardwood conifer forests in southern New England (USA) illustrates this kind of forest. Harvest is done on a small scale, without replanting, in a landscape that is predominantly natural forest. Pest problems in such forests may be caused by native insects such as forest tent caterpillar (Malacosoma disstria H bner) or invasive species such as the gypsy moth (Lymantria dispar L. ). Modified native forests are artificially replanted after logging, treated with herbicides for release of young trees from competing vegetation, and thinned. Fertilizers are not generally used, nor are soil preparations done. Douglas fir (Pseudotsuga menziesii Mirb. Franco) forests on the national...

Soil Organic Matter Soil Carbon and Carbon Sequestration in Zambia

Diagram Tieridging

Reduced N fertilizer requirement Sesbania sesban Fully fertilized Gliricidia sepium Leucaena leucocephala Grass fallow Senna siamea Maize without fertilizer The impact of topsoil depth (TSD) and management on soil properties has been assessed using farmyard manure (FYM), N and P fertilizer, tie ridging, and ordinary farmer practices in Tanzania. SOC and P generally declined with a decrease in TSD, while SOC, N, P, K, and Mg were significantly increased by FYM application. The application of N and P fertilizers also had significant effects on SOC and P. Applying FYM increased SOC by about 0.55 in comparison with normal farmer practices, improved available water capacity (AWC), and root growth in soils with unstable structure and low SOC content (Gajri et al., 1994). The SOC pool was increased by adopting conservation tillage, using crop residue (mulch), incorporating cover crops in the rotation cycle, and using improved agricultural practices. The total potential for SOC sequestration...

Pandemics Co2 And Climate

Dead Lichen Halos Baffin Island

A little over a decade ago, we bought the property where we now live. The former owner had begun a small Christmas tree farm in the lower part of the meadow where our house stands. He kept most of the meadow in good trim by bush hogging, a method far cruder than cutting hay. The drive from a tractor spins a blunt blade that whacks down the grass by brute force, along with anything else that sprouts (saplings, shrubs, etc). Two summers had passed between the time when we bought the land and the point when house construction started, and in that short a time the meadow had begun to be invaded by forest. Young cedar trees sprouted along the meadow edges where berries fell from mature trees in nearby woods. Locust saplings sprouted well out into the meadow by a combination of root propagation and seed dispersal by pods. Several kinds of shrubs and cedars that had been whacked down but not killed by bush hogging also started to grow here and there. This meadow had no fences, or otherwise...

Summary of Key Federal Environmental Statutes Enacted Since 19701

The Safe Drinking Water Act was amended several times during the 1970s and 1980s to improve the drinking water standard-setting process for consumption of drinking water at the tap. Standards are set considering both the cost and effectiveness of available treatment technologies. The SWDA amendments of 1986 required EPA to promulgate a total of 108 standards for toxic chemicals by 1991. They also require states to develop a program to protect the area around wells (wellheads). This provision was enacted in response to findings by EPA that 8000 drinking water wells in the nation were contaminated by thousands of sources, including land disposal facilities, underground storage tanks, septic systems, underground injection wells, and pesticide and fertilizer applications. The chemicals found are widely used in common products, including plastics, solvents, pesticides, paints, dyes, varnishes, and ink.

Physiological Adaptations In Coastal Vegetation

Coastal Maritime Forest Florida

Typical machair develops through a growth, stabilization and degeneration cycle over a long period. Continued growth with fresh calcareous sand, blown inland from the dunes, continues until the surface rises so high above the water table that drought becomes a stress, and degeneration ensues. When the soil surface falls far enough for the water table to be available, colonization resumes and the growth cycle starts again (Dickinson & Randall, 1979). This slow renewal cycle has maintained the fertility of this type of pasture for thousands of years. Unfortunately much of the biodiversity of these coastal dune pastures is being lost due to the subsidized improvement of coastal grazings the natural cycle of erosion and renewal is being suppressed due to the application of fertilizers, herbicides, and electric fencing. Even though in many cases the machair may not have received direct applications of fertilizer, it is sufficient for cattle that have been previously fed on nutrient-rich...

Environmentally Balanced Industrial Complexes

Figure 13 Phosphoric acid and N-P-K fertilizer production waste treatment (from Ref. 17). Figure 13 Phosphoric acid and N-P-K fertilizer production waste treatment (from Ref. 17). producing raw materials for others within the complex. Examples of such major industries that can serve as the focus industry of an EBIC are fertilizer plants, steel mills, pulp and paper mills, and tanneries. Nemerow and Dasgupta 24 presented the example of a steel mill complex with a phosphate fertilizer and a building materials plant as the likely candidates for auxiliary or satellite industries (Fig. 14). A second example presented was an EBIC centered phosphate fertilizer plant, with a cement production plant, a sulfiiric acid plant, and a municipal solid wastes composting plant (its product to be mixed with phosphate fertilizer and sold as a combined product to the agricultural industry) as the satellite industries (Fig. 15). As previously mentioned, in the usual starting process of producing...

Bioaugmentation and Natural Attenuation

Allochthonous, designer, or genetically modified or engineered microorganisms amended with an emulsion or fertilizer and an enzyme catalyst are sold commercially as bioproducts. Bioproducts have been used to remediate petroleum-contaminated sites in Alaska, Canada, Greenland, and Norway. Usually applied with repetitive tilling, practitioners claim dramatic results within a single treatment season. However, laboratory trials of various bioproducts, comparison trials of bioproducts with garden variety and arctic-blend fertilizers, and field studies, all without tilling, found that bioproducts underperformed or fared no better than the fertilizers (Venosa et al. 1992 Margesin and Schinner 1997 Whyte et al. 1999 Braddock et al. 2000 Thomassin-Lacroix et al. 2002). Bioproducts are considerably more expensive than commercially available fertilizers. With climate change, ecologists are now documenting competition and proliferation of advancing flora in boreal forests and taiga and tundra...

Tracing N in Landscapes

The 15N-enriched fertilizer method, also known as 15N isotope dilution method, consists in adding 15N to soil. Unlike the 15N2-enriched atmosphere method, plants absorb N from soil containing more 15N content than atmosphere. The 15N dilution of atmospheric N reflects the magnitude of fixation. The main limitation is the need to estimate the 15N abundance of the N uptake by plants from soil through the analysis of 15N abundance in a reference plant. This kind of quantification is necessary since the addition of a labelled fertilizer makes difficult to assume a uniform mixing with soil N.

Application Of Tree Legume Rhizobia For Reforestation Programme In Thailand I Selection And Management Of Rhizobia For

Leguminous trees such as Acacia, Pterocartpus, and Leuceana have been recommended for reforesting in denuded and degraded lands in Thailand. These leguminous trees successfully compete with native grasses and adapted to adverse conditions, i.e. drought, fires, acid, saline and low fertility soils. The advantage of leguminous trees is their association with Rhizobium, a symbiotic microorganism. Since the legume-rhizobial symbiosis can fix atmospheric nitrogen, thus nitrogen status of soil is improved even though no chemical nitrogen fertilizer is applied. Root nodules of five tropical leguminous trees (Acacia mangium, Acacia auricultiformis, Pterocarpus macrocarpus, Xylia kerii and Millettia leucantha) were collected from reforested sites around the country. Five trees were examined and nodules were collected for each of the species at each sites. About 300 rhizobial strains were isolated, purified and subcultured. The rhizobial strains were inoculated into their host plant and...

Phosphoric Acid Production

Acid Phosphoric Pfd

Phosphate production and phosphate fertilizer manufacturing facilities are situated in many areas in the United States (primarily in Florida and California) and in other countries such as Algeria, Jordan, and Morocco, as previously mentioned. The wastewaters from production and cleanup activities and surface runoff in most of these locations are stored, treated, and recycled, and the excess overflows are discharged into natural water systems. In those facilities where wastewater from production and cleanup activities and drainage are discharged into municipal water systems and treated together with domestic, commercial, institutional, and other industrial wastewaters, a degree of pretreatment is required to meet federal guidelines or local ordinances such as those presented in Section 9.4. For instance, according to the USEPA 6 , the pretreatment unit operations required for the phosphate fertilizer industry comprise solids separation and neutralization, and it may be achieved by...

The Future of Anaerobic Granulation

Environmental protection- and resource conservation-concepts focus on pollution prevention and on a minimum of consumptive use of energy, chemicals, and water in pollution abatement and a maximum of re-use of treated wastewater, by-products, and residues produced in the treatment of wastewater. Consequently, by implementing these concepts, wastewaters like sewage and industrial effluents become an important source of water, fertilizers, soil conditioners, and frequently energy instead of a social threat. In addition, a bridge is made between environmental protection and agriculture practice, stimulating urban agriculture in the neighborhood of large cities. Anaerobic granulation process is considered as the core technology for mineralizing organic compounds in highly polluted wastewater streams.

Opportunities for Increasing Soil C Sequestration

A number of agricultural land management practices have shown potential for increasing C contentin agricultural soils (Desjardins et al., 2001b). Table I summarizes some of the results reported in the literature. These data are either based on measured or modeled values. As shown by Smith et al. (2001), a range of values are associated with most management practices. This range depends on soil texture, soil taxonomy, climatic conditions, and many other factors. The practices in Table I are shown independently, however, some practices are often adopted in unison and may or may not have an additive effect. For example, a reduction in bare fallow is usually accompanied by greater use of fertilizers and sometimes the adoption of conservation tillage. McConkey et al. (1999) discuss how several interacting effects can be calculated for cropping in various soil zones on the Canadian Prairies. There are probably several other practices that have the potential to sequester C in agricultural...

Soil Nutrient Balance

In conventional systems four frequently used elements, nitrogen, phosphorus, potassium and calcium are often applied as synthetic fertilizers in relatively heavy concentrations that frequently exceed crop requirements. This can cause soil imbalances in two ways (1) by increasing or decreasing availability of some elements essential for crop growth and also by changing soil pH, and (2) by increasing productivity over the short term but in decreasing productivity over the longer term due to imbalances and deficiencies for some other essential elements that are not replaced. For example, high levels of phosphorous fertilization can lead to a deficiency of both zinc and iron causing adverse effects on plant growth. Organic systems use organic fertilizers such as manures, compost, crop residues, legumes, rock phosphate and rock potash, containing minor and trace elements as well as moderate amounts of the primary elements. Organic farming encourages the reduction of agrochemicals and...

Role Of Soil Protozoa

Of nutrients to plants occur in the water films covering soil aggregates and filling their pores. Here, bacteria and fungi decompose organic matter and immobilize the extracted nutrients into their bodies, but grazing by the microfauna, protozoa, and nematodes regulates and modifies the size and composition of the microbial community and enhances microbial growth through microfaunal excretions. Nematodes also graze fungi (Chapter 1), but protozoa, especially amoebae, can graze bacteria in tiny pore spaces unavailable to nematodes. The degree of nutrient recycling is influenced by external factors of climate and soil management (e.g., inputs of fertilizers and biocides, compaction by farm machinery) and internally by the community of protozoa and nematodes, reflected in their biodiversity.

Microbial Parameters as Indexes of Soil Quality

A great number of methods have been developed to determine the presence and activities of microbial communities in soil. Some of them are internationally standardized (Winding et al. 2005), such as measures of population size for either a single organism type, a functional group, or a whole community. The effect of agricultural managements on soil microorganisms can be measured with changes in both community size (cell number) or microbial biomass, and biological activity, such as soil respiration. However, although addition to soil of good quality compost may increase global microbial biomass and enhance enzyme activity (Albiach et al. 2000 Perucci et al. 2000 Debosz et al. 2002), the specific responses of various bacterial groups to changing environment in agricultural soils are poorly known (Buckley and Schmidt 2001 Kiikkila et al. 2001 Chander and Joergensen 2002). Moreover, several studies showed that, in order to assess fertilizers' effects, microbial enumeration methods by...

Example of Comprehensive Fermentation Factory

During the 1970s, a fermentation factory in Yamaguchi Prefecture produced alcohol, MSG, lysine, antibiotics, and organic combined fertilizer and used molasses to produce alcohol, MSG, and yeast. It is introduced as an example, although its present situation has changed. Liquid fertilizer Sludge fertilizer factories, batch processes are generally adopted, so that it is difficult to estimate the reliable balance. As shown in Table 15, 76 tons of N were used 74 of it was generated as wastewater and 25 tons were discharged to the coastal water. As for P, 2.01 tons were used, excluding organic fertilizer production, and 1.2 tons, corresponding to 77 of use, were generated and Organic fertilizer aExcluding the input to fertilizer production. aExcluding the input to fertilizer production. 0.25 tons were discharged to the coastal water. The CODMn generated was 150 t day and discharged 7.4 t day. The production of organic fertilizer had been increasing year by year at that time, and 71, 29,...

N2O Production and Emission from Soils

Typical soil managements, such as nitrogen fertilization and irrigation, are responsible for large N2O fluxes. The great application of mineral-N fertilizers in traditional croplands, such as NO3 , NH4+, NH4NO3 and NH3, is a key controller of microbial processes involved in N2O evolution from soil (Bremner and Blackmar 1980 Duxbury et al. 1982 Dambreville et al. 2006). Irrigation is a fundamental crop management in arid lands characterized by cyclic water deficit, as in the Mediterranean regions. Several authors detected peaks of N2O fluxes from crop soils following irrigation events, evidently as a result of enhanced denitrifying activities under restricted aeration state (Teira-Esmatges et al. 1998 Sanchez et al. 2001 Vallejo et al. 2004), while large emissions occur when irrigation is performed simultaneously or soon after N supply (Webster and Dowdell 1982 Ranucci et al. 2011). reducing the use of artificial fertilizers, and the amount of waste added to landfill sites. Compost is...

Inventory methodologies

Amounts of applied mineral N fertilizers (FSN) and organic N fertilizers (FON) 1996 IPCC guidelines. Recently, Rochette et al (2008) used the same regression approach as Bouwman (1996) and Bouwman et al (2002) to estimate the N2O emission factor for N fertilizer from Canadian field studies. Their results suggested average background emissions of 0.1, 0.6 and 0.8kg N2O-N ha-1 yr-1 for Canadian agricultural soils in three different regions. Some countries have adapted the IPCC default methodology to include 'background' emissions. For example, in Sweden a 'background' EF of 0.5kg N2O-N ha year for mineral soils (Kasimir-Klemedtsson, 2001) is used. This value was determined on the basis of the country-specific EF for inorganic N fertilizer inputs of 0.8 per cent, which is lower than the IPCC default value of 1.25 per cent. The reason for including these 'background' emissions in the Swedish inventory is to account for the effect of N mineralization following decomposition of soil organic...

Effects on Soil Chemical and Physical Properties

The increased growth response documented in almost all the solarization studies is mainly due to the above-cited higher levels of macronutrients or the improved uptake of micronutrients solubilized by humic substances (Chen and Aviad 1990 Chen et al. 1991). As a consequence of the enhancing effect of solarization on soil nutrients, Flores et al. (2007) suggested the application of low rates of mineral fertilizers before heating soil, in order to avoid an increased vegetative growth of the plants at the expense of crop yield.