Why is there a pressure to switch to organic farming?

Step-by-step solution

There is a large pressure to switch to organic farming, mainly because of the problems associated with the overuse of chemical fertilisers and to decrease environmental pollution. Biofertilisers are organisms that enrich the nutrient quality of the soil. The main sources of biofertilisers are bacteria, fungi and cyanobacteria. You have studied about the nodules on the roots of leguminous plants formed by the symbiotic association of Rhizobium.