Metaphorical effects of organopesticides carbendezim and malathion on the growth and physiological activities of cyanobacteria nostoc commune, vaucher inhabiting the rice field of bhandara district (m.s.)

The effect of pesticides on Cyanobacteria (Nostoc commune vaucher ) has been analyzed in vitro in the laboratory, for which the pure culture of Nostoc commune (Voucher) was treated with various concentrations of two pesticides i.e. carbendazim and malathion and its metabolic effect was analyzed using parameters like concentration of proline and protein along with change in biomass production. The result obtained in the study indicates that amount of biomass and extracellular protein was increased with enhancing incubation time as well as with increase in concentrations of pesticides but decline after certain limit. The present data obtained cleared a way that the use of high concentrations and continuous use of organophosphorus pesticide causes detrimental effect on rice field cyanobacteria.