MANAGEMENT OF ALTERNARIA SOLANI (ELL. AND MART.) BY USING PLANT EXTRACTS

Abstract

Early blight is the most destructive disease of solanaceous plants distributed in all over the world; its causal agent is Alternaria solani with its wide host range. Numbers of management strategies had been adopted but none of them were completely effective. That's why, an experiment was planned to find out the effective control of early blight disease. The infected samples were collected from the field and isolation, purification and multiplication of fungus was done by using PDA media.The management of early blight disease was assessed by using the extract of desert plants viz., Kortuma (Citrullus colocynthis), Kapok bush (Aervaj avanica) and Puthkanda (Achyranthe saspera). Application of these botanical were carried out by using poison food technique in laboratory, foliar spray in green house and field trials. Complete Randomized Block design was used for laboratory, green house and randomized complete block design (RCBD) for field trail. The data was recorded by using standard procedures on a variety of factors and statistically analyzed through suitable software.