A) Crotalaria juncea
B) Dalbergia
C) Cassia
D) Acacia.
Correct Answer: A
Solution :
: In preparing green manure a quick growing crop is cultivated and plough hard under to incorporate it into soil. This crop supplies organic matter and additional nitrogen and also excercises a protective action against erosion and leaching. It increases crop yield up to 30-50%. Following plants are used as green manures - Crotolaria juncea (sunn hemp), Sesbania aculeate (dhaincha), Cyamopsis tetragonoloba (cluster bean), Melilotus parvi flora (senji), Trifolium alexandrinum (berseem). Lens esctdenta (lentil), Medicago sativum (leucerine).
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