Richest source of nitrogen is
A. Dried blood
B. Raw bone meal
C. Fish manure
D. Dry activated sludge
Answer: Option A
Solution (By Examveda Team)
The richest source of nitrogen is Dried blood.A blood meal is a dry, inert powder made from blood, used as a high-nitrogen organic fertilizer and a high-protein animal feed. N = 13.25%, P = 1.0%, K = 0.6%.
It is one of the highest non-synthetic sources of nitrogen. It usually comes from cattle or hogs as a slaughterhouse by-product.
This Question Belongs to Agriculture >> Plant Pathology
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