why farmers grow leguminous crops between two main crops?

to replenish the nutrients of soil and by making soil not defecient of any particular nutrient

leguminous plants have rhizobium bacteria in their root nodules. they convert atmospheric nitrogen into soluble nitrogen compounds which can be used by plants. so farmers grow leguminous plants between two main crops to enrich the soil withnitrogen and to reduce the use of chemical fertilizers.

THAT IS BECAUSE THEY HAVE RHIZOBIUM IN THEIR ROOTS WHICH CONVERT FREE NITROGEN INTO USABLE FORM WHICH IS USED BY THE PLANTS . THUS FARMERS GROW LEGUMINOUS PLANTS BETWEEN 2 MAIN CROPS SO THAT THE SOIL CAN BE ENRICHED AND IT BECOMES RICH IN NITROGEN .THIS WILL REDUCE HE USE OF CHEMICAL FERTILIZERS AN HELP THE OTHER PLKANTS TO OBTAIN SOLUBLE FORM OF NITROGEN.

HOPE THIS HELPS YOU.......DO GIVE THMBS UP IF IT DOES

THANK YOU