Green manures are mostly used as a source of

A. Zinc

B. Carbon

C. Chlorophyll

D. Nitrogen

Answer: Option D

Solution(By Examveda Team)

Green manures are mostly used as a source of Nitrogen.
Green manure is a crop specifically produced to be incorporated into the soil while still green. The primary goal is to add organic matter to the soil for its benefit.
Green manuring is often used with legume crops to add nitrogen to the soil for following crops, especially in organic and conventional farming.