Vol. 11, Special Issue 8 (2022)

Author(s):
Rashmi Rawate, Ashulata Kaushal, GK Awadhiya and Dev Prakash Patel

Abstract:
Random survey was conducted during the kharif season at 2020-21 to study the incidence of web blight in mung bean growing areas of Chhattisgarh i.e. Raipur, Balod, Kanker, Narayanpur and Rajnandgaon. Disease incidence ranged from 15.5% to 78.85%. The maximum incidence of web blight disease was recorded in Raipur District i.e.78.85%, while minimum incidence was recorded in Narayanpur District i.e.15.5%. Evaluate six different fungicides in vitro against the pathogen. Complete inhibition of the pathogen was recorded in Mancozeb and Hexaconazole at 100 ppm. At 500ppm, 1000ppm and 1500ppm all fungicides showed complete inhibition of the pathogen. In field condition Azoxystrobin recorded highly effective fungicide for disease reduction where disease severity was recorded 21.43% with 68.20% disease reduction over control. 52 germplasms were evaluated against web blight under field conditions during the year 2020-21. None of the genotype was found free and highly resistant. However, Barkha found resistant reaction against the disease. Five entries i.e. IPM 2-14-9, LGG 450, ML 818, PM 4, PM 6 found moderately resistant, five entries found moderately susceptible, 18 entries were found susceptible while 23 entries found highly susceptible.