Crop Yields from Soil Treatments Under Maize

Results obtained during the MESCOSAGR project indicate that reduced tillage did not influence maize growth. Biomass yield of maize (Table 3.8) from Torino and

Table 3.8 Biomass yield of maize crop (ton ha 1 day month) in the three experimental sites

Site Treatments

Torino

Napoli

Battipaglia

2006

2007

2008

2006

2007

2008

2006

2007

2008

CONT

28.4

21.1

13.1

21.5

9.3

11.4

14.4

13.0

8.1

TRA

25.4

23.9

19.4

21.9

18.7

15.5

24.2

20.3

11.2

MIN

21.9

24.4

19.7

22.0

21.2

16.9

-

-

-

COM1

23.6

23.8

16.4

7.0

6.7

6.8

15.9

16.4

9.0

COM2

23.6

22.8

18.1

9.5

8.6

9.3

21.7

17.9

8.2

GMAN

26.6

24.4

19.7

21.5

17.1

12.5

-

-

-

Protected LSD (Sidak)

4.1

5.1

5.2

Napoli field plots subjected to minimum tillage and moldboard plowing was not significantly different. Nevertheless, a positive correlation between yield variation (YV%) due to tillage method (MIN vs. TRA) and summer water deficit (WD) was found in Napoli site (YV% = -72.1 + 0.162 WD; R2 = 0.995; P < 0.05).

This is in line with positive effects of reduced tillage practices on water availability and on plant growth found in drier conditions (Simanskaite et al. 2009; Marenghi et al. 2000; Mori et al. 2000).

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