Question

wht is the difference between multiple cropping and crop rotation

Answer 1

Multiple cropping means to growing different crops in the same place and at the same time. This increases the fertility of the soil.

Crop rotation means growing of different kinds of crops on a piece of land in a pre- planned succession.

Answer 2

multiple cropping means producing(different crops) more than one crop in the same field at a  time.
whereas, crop rotating means producing different crops one after other.