Epidemiology and Management of MYMV Disease in Mung Bean (Vigna radiata (L.))
Preety Verma
*
Department of Plant Pathology, College of Agriculture, CCSHAU, Hisar, 125004, India.
Vinod Kumar Malik
Department of Plant Pathology, College of Agriculture, CCSHAU, Hisar, 125004, India.
Pooja Sangwan
Department of Plant Pathology, College of Agriculture, CCSHAU, Hisar, 125004, India.
Rakesh Kumar
Department of Plant Pathology, College of Agriculture, CCSHAU, Hisar, 125004, India.
Pankaj Yadav
Department of Plant Pathology, College of Agriculture, CCSHAU, Hisar, 125004, India.
Mamta Khaiper
Department of Forestry, College of Agriculture, CCSHAU, Hisar, 125004, India.
Bajrang Lal Sharma
Department of Entomology, College of Agriculture, CCSHAU, Hisar, 125004, India.
Niharika Sheoran
Department of Plant Pathology, College of Agriculture, CCSHAU, Hisar, 125004, India.
Nisha Yadav
Department of Plant Pathology, College of Agriculture, CCSHAU, Hisar, 125004, India.
Monika Jangra
Department of Forestry, College of Agriculture, CCSHAU, Hisar, 125004, India.
Janvi Malik
Department of Plant Pathology, College of Agriculture, CCSHAU, Hisar, 125004, India.
*Author to whom correspondence should be addressed.
Abstract
Mung bean is a short-duration ancient legume crop that can be grown as a sole or intercrop for grain and green manure in all three crop seasons, including winter, summer and rainy in various regions of the country. MYMV (Mungbean Yellow Mosaic Virus) disease is one of the most destructive diseases transmitted by whitefly (Bemisia tabaci Genn) persistently. Weather parameters have no direct effect on MYMV, but affect the whitefly population. Field experiments were conducted for three consecutive years from 2019-2021 as to know the effect of weather parameters on the whitefly population. Development of whitefly population and MYMV disease severity were recorded in mungbean crops at 7 days interval starting from 20 days after sowing (DAS). The present study showed that whitefly population builds up starting in July and reached to maximum at end of August to early September. There are various factors influencing the build-up of whitefly population viz., maximum temperature 36±2°C, minimum temperature 25±2°C, morning relative humidity more than 90 percent, more sunshine hours and no rainfall prevailing during that period. Whitefly population had positive significant correlation with maximum temperature and bright sunshine hours while evening relative humidity and rainfall were recorded as negatively significant. Three-year data is very helpful in guiding the farmers for timely and preventive sprays based on existing infections and the population of whitefly in a season.
Keywords: Persistent manner, MYMV disease, Bemisia tabaci, bright sunshine hours, whitefly, preventive spray