A) Dalbergia sissoo
B) Polyaithea
C) Sesbania aculeate
D) none of these.
Correct Answer: C
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 exercises 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 parviflora (Senji), Trifolium alexandnnum (Berseem), Lens esculenta (Lentil), Medicago sativum (Leucerine).
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