Question

How does crop rotation retain soil fertility

Answer 1

Crop rotation method involves growing of set of crops in a regular succession over asame piece of land (field with) in a specific period of timeThe goals of crop rotation are to help manage soil fertility and also to help avoidor reduce problems with soil borne diseases and some soil-dwelling insects, such as corn rootworms. It is one of the oldest agricultural methods to increase yield per acre. *Crop rotation maintains and improves soil fertility. *Crops grown in one period of time utilise one set of nutrients. Different crops grownin the following time priod utilise the other set of nutrients so that this time will be enough for the first set of nutrients to replenish themselves.*Controls soil erosion. *Prevents soil depletion *Prevents growing of pests, weeds & soil diseases. *Controls insect/mite pests. Crop rotation as a means to control to insect pests is most effective when the pests are presentbefore the crop is planted have no wide range of host crops; attack only annual/biennial crops; and do not have the abilityto fly from one field to another.