Question

Mr Gupta grew wheat crops on his field continuously for ten years. He found that gradually the yield decreased. Why do you think this happened?

Answer 1

As continously crops are grown for a long period of time, the land has become devoid of nutrients and therefore the yield is decreasing.

Answer 2

due to the gradual growing of the crops in the patch of soil the field loses its nutrients to grow a healthy plant this is the reason why Mr.gupta found the deacreasion of crop