Field evaluation of certain fungicides and their combinations against major foliar diseases in cotton

AbstractNine treatments, viz, kresoxim-methyl (T1); propiconazole (T2); propineb (T3); fluxapyroxad + pyraclostrobin (T4); metiram + pyraclostrobin (T5); azoxystrobin + difenoconazole (T6); copper sulphate + mancozeb (T7); captan + hexaconazole (T8); copper oxychloride + streptocycline (T9) along with untreated control were imposed against cotton diseases during Kharif 2020-2022. All the treatments were found superior with 76.9 to 80.0% control against Corynespora leaf spot and rust with 74.7 to 78.8% control; T3, T8, T7 and T6 were significantly superior against grey mildew with 32.3 to 78.0% control; T1 to T6 promoted significantly superior yields. Highest BCR of 1.7 was recorded with propiconazole followed by propineb (1.7), kresoxim-methyl (1.7) and similar trend was observed for incremental banefit cost ratio (IBCR) of 20.7, 14.7 and 8.7, respectively.