Organisms And Population Question 55
Question: Crop rotation is helpful because [CPMT 1995]
Options:
A) It increases nitrate levels in the soil
B) It increases sulphate levels in the soil
C) It adds more nitrogen to the soil
D) It adds more phosphorus to the soil
Show Answer
Answer:
Correct Answer: A
Solution:
If the same crop is grown year after year, fertility of soil is lost due to utilization of same minerals again and again, thus disturbing the soil structure, which facilitates soil erosion.
Legumes are useful in crop rotation because of their nodulated roots and they fix more nitrogen in the soil.
BETA
