IN VITRO EVALUATION OF AYURVEDIC DRUGS AGAINST PATHOGEN ALTERNARIA SOLANI CAUSING LEAF SPOT DISEASES IN TOMATOP.J. MAHAJAN, K.S. RAGHUWANSHI, S.G. BORKAR AND N.A. KADAM
Man is dependent on plants for almost every need and requirement. Hence, destruction of crop plants due to infection by fungal pathogens has always been an area of prime concern. The use of synthetic fungicides for disease management is harmful for human and animal health as well as soil. They enter the food chain and cause several deleterious effects on biosphere, contributing to significant declines in populations of beneficial soil organisms, soil acidification and compaction, thatch accumulation, and diminished resistance to diseases. Natural plant products are important sources of new agrochemicals for the control of plant diseases. Therefore, the in vitro evaluation of Ayurvedic drugs against Alternaria solani was carried out at M.P.K.V, Rahuri. Total 29 different Ayurvedic drugs were evaluated at 2%, 5% and 10% concentration by Poison food technique against these pathogens. Among the 29 different ayurvedic drugs, seven Ayurvedic drugs viz., Abhayarishta, Mahamanjishtadi kwath, Vidangasav, Kutajarishta, Bhunimbadi kadha, Amrutarishta and Medari were found 100 % effective at 10 % concentration against Alternaria solani.