Management of Viral Diseases in Blackgram under Field Conditions

Abstract

Blackgram (Vigna mungo L.) is a vital pulse crop valued for its high protein content and role in sustainable agriculture. A field study was conducted during rabi, 2019-20 at Agricultural Research Station (ARS), Utukur, Andhra Pradesh to evaluate the efficacy of different treatments in combination with chemical insecticides in managing Yellow Mosaic Disease (YMD) and Bud Necrosis through vector control. Among the treatment combinations tested, seed treatment with Imidacloprid 600 FS @ 5 ml/kg seed + sowing of four border rows of Jowar/Maize + Installation of Yellow and blue sticky traps @ 4/acre + removal of virus infected plants + spraying of Diafenthiuron 50% WP @ 1.25 g/l at 30 & 45 DAS proved effective in minimizing Yellow Mosaic Disease (YMD) and Bud Necrosis incidence with 4.67 % and 6.37 % respectively with maximum seed yield of 1218 kg/ha and Cost Benefit ratio of 1: 3.37 followed by seed treatment with Imidacloprid 600 FS @ 5 ml/kg + Installation of yellow and blue sticky traps each @ 4 /acre + removal of virus infected plants + need based spray of Acephate @ 1.5 g/l + spraying of Spiromesifen @ 1 ml/l at 30 & 45 DAS with Bud necrosis (8.93 %) and yellow mosaic virus (3.27 %), seed yield of 1122 kg/ha and Cost Benefit ratio of 1 : 2.97.