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Sustainable technologies to improve soil fertility and physical condition:
ABalance use of NPK fertilizers according to the need of crops.
BFollowing proper crop rotation (shallow rooted and deep root crops) in the cropping session.
CRegular use of FYM, Composts, acidic mulches, Green manures and Organic fertilizers to increase OM content of Soil.
All of the above
Correct Answer: D. All of the above
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