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BIOLOGICAL STUDIES ON THE EFFECT OF AGROCHEMICALS ON NODULATION OF SOME CULTIVATED LEGUMES

Abstract

Symbiotic nitrogen fixation is of great importance not only in the production of leguminious crops but also in the global nitrogen cycle. Nodulation is a highly host specific interaction in which with few exceptions, specific rhizobia strain infect a limited range of plant host. The connection between pesticides and nitrogen fixation shows that pristine and natural interactions between bacteria and plants are being jeopardized by what we put into the soil (Ann. Hirsch). The pesticides significantly affected nitrogen activity of the Rizobium strains used and influenced the growth and appearance of leguminous plants which proved that the bacteria and the plants were sensitive to Agro-chemicals.

M. LAXMI PRASUNA

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