Management of soybean rust caused by Phakopspora pachyrhizi using fungicides, botanicals and biocontrol agents in mid-hills of Meghalaya

Management of soybean rust caused by Phakopspora pachyrhizi using fungicides, botanicals and biocontrol agents in mid-hills of Meghalaya

2011

E06008

Rust caused by Phakopsora pachyrhizi causes heavy yield losses in soybean crop in Meghalaya. Management options viz. fungicides, viz. 0.2% propineb, 0.1 % hexaconazole, 0.2% tebuconazole, 0.2% chlorothalonil, 0.25% mancozeb, 0.1% propiconazole, 0.2% carbendazim, 0.3 % wettable sulphur, 0.05 % tricyclazole, 0.1 % triadimefon and 0.3 % copper oxychloride, botanicals viz. 0.03% azadirachtin (3 ml/l) and cymbopogon leaf extract (3 ml/l) and two biocontrol preparations T. roseum and Trichoderma sp. were explored under mid-hill conditions of Meghalaya. Susceptible variety JS 335 was used in the experiments. Two sprays were applied and rating was done on 0-9 scale. Results indicated that all the treatments were effective in managing the disease but amongst them propiconazole and sulpher were highly effective in reducing the disease pressure and maximizing the yield. Cost benefit analysis also proved that propiconazole (1.7) and sulpher (1.6) are the best options for managing soybean rust under mid-hill conditions of Meghalaya.

24(2):33-37, INDIAN JOURNAL OF HILL FARMING

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