Vol. 11, Issue 8 (2022)

Author(s):
KP Anusree and KK Kanzaria

Abstract:
A laboratory experiment was conducted at the Department of Plant Pathology, College of Agriculture, Junagadh Agricultural University, Junagadh to study the in vitro efficacy of different fungicides against spore germination inhibition of Erysiphe polygoni DC causing powdery mildew disease in black gram. The experiment comprises non-systemic, systemic and ready mix fungicides using completely randomized design replicated thrice. The observations were taken after 48, 72 and 96 hours of treatment. The results revealed that, among non-systemic fungicide, wettable sulphur 80% WP found significantly superior over rest of the treatments with a mean spore germination inhibition of 67.31 per cent. Whereas, among systemic fungicides, propiconazole 25% EC remain significantly superior over rest of the treatment with mean spore germination inhibition of 78.80 per cent, but it was remained statistically at par with hexaconazole 5% EC (77.26 per cent). Among ready-mix fungicides, tebuconazole 50% + trifloxystrobin 25% WG found significantly superior over rest of the treatment with mean spore germination inhibition of 88.30 per cent. The fungicides, Kresoxim methyl 15% + chlorothalonil 56% WG and Captan 70% + hexaconazole 5% WP found next effective treatment and remain equally effective with mean spore germination inhibition of 82.01 and 79.97 per cent, respectively.