Which one of the following crop rotation is the best for maintaining soil fertility

A. Maize - Toria - Wheat

B. Paddy - Wheat - Cowpea

C. Paddy - Potato - Greengram

D. Soybean - Wheat - Greengram

Answer: Option D

Solution(By Examveda Team)

Rotation of crops is a cultivation practice that is very good for maintaining soil fertility. Out of the following options, Soybean - Wheat - Greengram is the best crop rotation crop. Legume crops help in recharging the nitrogen content of the soil and sustain soil fertility without the need of applying fertilizers.