A) organic farming
B) bio-fertilizer
C) intensive farming
D) both a and b
Correct Answer: D
Solution :
Organic farming and bio-fertilizer increase soil fertility and help managing soil pollution. Organic farming involves crop and livestock production under limited use of pesticides, fertilizers, genetically modified organisms, antibiotics and growth hormones. Bio fertilizer is a substance which contains living microorganisms which, when applied to plant surfaces, colonize the rhizosphere or the interior of the plant and improves growth by increasing the supply or availability of primary nutrients to the host plant.
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