As mentioned above, the technological plateau of yield has been attained, with an emphasis on grain quality. Budget cuts have been serious for cereal production and related research. Concerns for ecological stability of agriculture and rice cultivation have been raised in light of a new concept for evaluating agricultural systems, the issue of Low Input
Sustainable Agriculture (LISA). The emission of methane and 'green house effects', as well as salt accumulation in arid regions, are indicated as adverse factors from rice cultivation, although these aspects are not adequately studied. Fear of pollution by spraying insecticides, fungicides or herbicides has led a series of new ideas, such as organic farming, to the forefront.
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