Question

Green manuring increases crop yield by

• A. 5-10%
• B. 80-90%
• C. 10-20%
• D. 30-50%

Answer 1

The correct option is D 30-50%

Green manuring is prepared by the action of bacteria on the biodegradable substances.

Green manures add nitrogen and organic matter to the soil for improving crop productivity. They also improve soil aeration and drainage conditions. Both, leguminous and non-leguminous plants are grown for making green manure. This type of manuring is used in fields in which crops like rice, maize, sugarcane, cotton, wheat etc., which require high nutrient input are raised. There is 30-50% increase in the crop yield by using green manure.

So, the correct answer is option D.