Which one of the following is the best strategy for environment friendly sustainable development in Indian agriculture?
Options
(a)Expansion of cultivable land, increased use of superphosphate, urea and effective biocides
(b)Wider popularization of high-yielding crop varieties, better and more frequent irrigation and increased frequency of aerial sprays of inorganic fertilizers and pesticides
(c)Mixed cropping, organic manures, nitrogen-fixing plants and pest resistant crop varieties
(d)Improved farm implements and machinery, use of potent insecticides to minimise post-harvest grain losses and mono culture cropping practices
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