Effect of Botanicals with Carbendazim against Anthracnose (Colletotrichum lindemuthianum) of Black Gram (Vigna mungo L.)

Abstract

The present study was carried out to evaluate the effect of selected botanicals and carbendazim for the management of anthracnose disease on black gram caused by Colletotrichum lindemuthianum under field conditions. Three replications of black gram were planted in a randomized block design at the research plot of the Central Research Field, Department of Plant Pathology, SHUATS, Prayagraj during Kharif season of 2023. Carbendazim 50% WP at 2g kg-1 was applied for seed treatment of black gram before sowing. Foliar spray was conducted using five botanicals and one fungicide viz. T1- neem oil (2ml L-1), T2- eucalyptus oil (2ml L-1), T3- tea tree oil (2m L-1), T4- Lavender oil (2ml L-1), T5- Thyme oil (5%), T6- mancozeb 75 WP (0.2%) and T0- control with each treatment replicating three times. It was observed that all treatments significantly reduced the intensity of disease and increased growth parameters of black gram. From the study of the results, it was concluded that among all the treatments, the most effective in managing the disease was T6- Carbendazim at 0.1% ST+FS (22.33%) followed by T1- Carbendazim at 2g kg-1 (ST) + Neem oil at 0.2% (FS) (23.14%) as compared to T0- Control (43.48%) and in influencing the yield (t ha-1.) T6- Carbendazim at 0.1% ST+FS (7.86%) followed by T1- Carbendazim at 2g kg-1 (ST) + Neem oil at 0.2% (FS) (6.76%) as compared to T0- Control (3.15) in field condition and maximum cost benefit ratio was recorded in T6- Carbendazim at 0.1% ST+FS (1:2.43) followed by T1- Carbendazim at 2g/Kg(ST) + Neem oil at 0.2% (FS) (1:2.07) as compared to T0- Control (1:1.03).