Abstract
Pigeonpea (Cajanus cajan (L.) Millsp.) is widely cultivated in hill slopes of Manipur under organic farming system for multipurpose use as fuel, fodder, vegetable, pulse etc. The growing sites where survey was conducted showed different degree of disease incidence and severity of wilt in pigeonpea caused by Fusarium udum. Maximum disease incidence (58.77 % ;early maturing (V1 ) & 42.74% ;late maturing (V2)) and severity (55.22% ; V1 & 40.96% ; V2) were found at sampling sites (Motbung ; V1 & Kanglatongbi ; V2) where pigeonpea is grown continuously. Disease progress is slow during the early phases of growth but accelerates during the flowering and podding stage. Rate of infection was highest in flowering and podding stage and there was slight variation in area under disease progress curve between the sampling sites. Significant positive and negative correlations were observed between disease incidence and severity and meteorological factors.
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