2024, Vol. 7, Special Issue 9

The anthracnose disease caused by Colletotrichum gloeosporioides is second most common and serious disease of guava, which significantly decreased the market value of fruits. In present research work, eight fungicides (systemic, non-systemic and combi product) viz., Carbendazim 12% + Mancozeb 63% WP, Metalaxyl 4% + Mancozeb 64% WP, Iprovalicarb 5.5% + Propineb 61.25% WP, Tebuconazole 50% + Trifloxystrobin 25% WG, Azoxystrobin 23% SC, Carbendazim 50% WP, Thiophanate methyl 70% WP, Difenoconazole 25% EC at two different concentrations and extract of six plant species viz., Lantana camara, Zingiber officinale, Azadirachta indica, Ocimum tenuiflorum, Allium sativum, Sapindus mukorossi were evaluated (each @ 10% concentration) In vitro against Colletotrichum gloeosporioides causing anthracnose of guava, using “Poisoned Food Technique” with three replications in Completely Randomized Design. Among the fungicides evaluated Carbendazim 12% + Mancozeb 63% WP @ 1500 ppm and 2000 ppm, Tebuconazole 50% + Trifloxystrobin 25% WG @ 250 ppm and 500 ppm, Carbendazim 50% WP @ 1500 ppm, Thiophanate methyl 70% WP @ 500 ppm and 1000 ppm, Difenoconazole 25% EC @ 1000 ppm and 1500 ppm showed 100 per cent inhibition of mycelial growth of Colletotrichum gloeosporioides. Iprovalicarb 5.5% + Propineb 61.25% WP @ 2000 ppm was least effective which showed 73.88% inhibition. Among the used organics, Soapnut rind extract was most effective in inhibiting the mycelial growth of test fungus with 72.58% (24.67mm). Followed by garlic clove extract (51.85%). Lantana was least effective in controlling the mycelial growth of Colletotrichum gloeosporioides (41.66%).