Why is crop rotation necessary?

Why is crop rotation necessary? Correct Answer To increase the fertility of soil

Soil contains many minerals and salts. Some of them are used by one type of crop while others by other crops. Crop rotation will help to regain those minerals and will prevent the over exploitation of one type of mineral.

Related Questions

Who developed the idea of Crop Rotation?
Crop rotation refers to ________
Which one of the following is the correct sequence of crop rotation with a view to increasing soil fertility?
For supplying water to rabi crop, kharif crop and sugarcane, the channel is designed for a capacity equal to the greater of the water requirement of
Crop and Straighten photos কমান্ড ব্যবহারে ছবি crop করার পূর্বশর্ত কোনটি? 
The direction of rotation of earth on its axis is-