Answer:
Divide the different crops to different fields, and then rotate them throughout, if the farmer still wants the same crops to be grown. Or, plant a new crop entirely.
Explanation:
Different plants need different nutrients from the soil in order to be grown- so, in order to make sure that the soil isn't completely sapped from one specific nutrient, therefore making it impossible for it to grow any longer, crops should be rotated to make sure that there is a healthy balance.
