Variation in fungi toxicant sensitivity of Colletotrichum gloeosporioides Penz. isolates infecting major fruit crops in Khandesh region of Maharashtra

Abstract

Twelve Colletotrichum gloeosporioides isolates from four fruit hosts grown in different district in Khandesh region of Maharashtra (India) expressed significant variation in their sensitivity to fungicides. All isolates expressed highly sensitive reaction to azoxystrobin. Azoxystrobin (0.04%), thiophanate methyl (0.1%) and carbendazim 12 % + mancozeb 63 % WP (0.15%) fungicides were highly sensitive against all of the isolates followed by carbendazim (0.1%) and mancozeb (0.25%) was sensitive while, propineb (0.2%) was highly resistant against all isolates. Azoxystrobin fungicide inhibit growth of all isolates was 92.19%, thiophanate methyl fungicide inhibit growth 91.01% and carbendazim + mancozeb fungicide inhibit growth was 89.64 % of all isolates. In general, C. gloeosporioides isolates from pomegranate, sweet orange, banana and guava are tending towards propineb non sensitive it inhibit growth was 45.05%.