Question

why are crops such as beans used in rotation with
other crops?

Answer 1

the crops such as beans are good nitrogenous plants so that they can add nitrogen to the soil for next cultivation and to make soil fertile this is the reason why they use bean for rotationally

Answer 2

It is used in rotation with crops because once we plant any crop the crop loses all its fertility making it nutrientless

When we plant leguminous plants there are several nitrogen fixing bacterias (rhizobium) in its root nodes this helps in restoring the soils fertility thus making it nutritious and fertile