Incremental Cost-Benefit Ratio of Novel Fungicides towards Management of Cercospora Leaf Spots in Mung Bean during Rice Fallow Conditions in South Eastern Coastal Plain Zone of Odisha, India
S. Behera *
Nutri Crops Research Station, OUAT, Berhampur, Odisha-761001, India.
P.K. Panda
Nutri Crops Research Station, OUAT, Berhampur, Odisha-761001, India.
I. O. P. Mishra
Nutri Crops Research Station, OUAT, Berhampur, Odisha-761001, India.
P. M. Mohapatra
Nutri Crops Research Station, OUAT, Berhampur, Odisha-761001, India.
S. Behera
College of Agriculture, OUAT, Bhawanipatna-766001, India.
*Author to whom correspondence should be addressed.
Abstract
Eight fungicides were tested towards management of Cercospora leaf spots in mung bean during rice fallow conditions. Those fungicides were Carbendazim 50WP @1g/lit, Propiconazole 25EC @1ml/lit, Tebuconazole 25EC@1ml/lit, Hexaconazole 25EC @1ml/lit, Mancozeb 75 WP @2.5g/lit, Tebuconazole 50% + Trifloxystrobin 25% WG @0.75g/lit, Carbendazim 12% + Mancozeb 63% WP@2g/lit. In each treatment seed treatment was done with Imidacloprid@5g/kg + Carbendazim 2g/kg seed. Lowest percent disease index (12.17%) and highest grain yield (8.70 q/ha) was recorded in the treatment receiving foliar spray of Tebuconazole 50% + Trifloxystrobin 25% WG @0.75g/lit with lowest ICBR (1:2.52) followed by Hexaconazole 25EC @1ml/lit with 20.04% disease index, 7.13 q/ha yield but highest ICBR (1:10.19) and Carbendazim 12% + Mancozeb 63% WP@2g/lit with 28.14% disease index, 6.27 q/ha yield with (1:7.63) ICBR. Foliar spray of Tebuconazole 50% + Trifloxystrobin 25% WG @0.75g/lit showed superiority in controlling the disease followed by foliar spray of Hexaconazole 25EC @1ml/lit and Carbendazim 12% + Mancozeb 63% WP@2g/lit. ICBR is less in Tebuconazole 50% + Trifloxystrobin 25% WG @0.75g/lit than Hexaconazole 25EC @1ml/lit and Carbendazim 12% + Mancozeb 63% WP@2g/lit due to the high cost.
Keywords: Cercospora, leaf spot, ICBR, mung bean, cost-benefit ratio