13. Farmers practice crop rotation which means that they alternately grow different crops. Ther
generally prefer to grow leguminous plants alternating with another crop. Can you tell why?
Answers
Explanation:
ANSWER
After continuous plantation of the crops like rice and wheat, the nitrogen level of the soil decreases. This, in turn, affects the yield of the crops. The leguminous plants have nodes in their roots where the nitrogen-fixing microbes reside. These microbes help by fixing the nitrogen in the soil. Hence increasing the nitrogen level of soils. So the farmers plant the leguminous plants to maintain the nitrogen level of the soil.
Answer:
They prefer to grow leguminous plants alternatively as by growing leguminous plants nutrients in the soil are regenerated without addition of any other substances like fertilisers which are made up of chemicals and are harmful.
Explanation:
In the root nodules of leguminous plants there is Rhizobium bacteria which converts the atmospheric nitrogen into nitrogen molecules in the soil which can be easily absorbed by plants as nutrients.