Which of the following is the best strategy for
environment-friendly and sustainable development of Indian
agriculture?
(1) Expansion of cultivable land, increased use of chemical
fertilizers and effective biocides
(2) Expansion of area under high yielding varieties of
crops, irrigation and increased use of inorganic fertilizers
(3) Mixed cropping with nitrogen fixing plants, organic
manures and pest-resistant crop varieties
(4) Improved mechanization, use of potent insecticides to
minimize post-harvest grain losses and monoculture cropping
practices
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( 3 ) Mixed cropping with nitrogen fixing plants, organic
manures and pest-resistant crop varieties
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Group I 
