Survey of the disease incidence of Cercospora leaf spot of mungbean [Vigna radiata (L.) Wilezek] in Eastern Uttar Pradesh

Abstract

Mungbean (Vigna radiata L.) is short duration legume crop belongs to family Leguminosae, Mungbean is important pulse crop of India, it is widely cultivated throughout the primarily a rainy season crop but with the development of early maturing varieties, though they get highly affected from the disease. Survey of different five districts mainly Jaunpur, Varanasi, Chandauli, Azamgarh and Mirzapur under ten blocks such as Badlapur, Mariahu, Pindra, Sevapuri, Niyamatabad, Sakaldiha, Lalganj, Phoolpur, Jamalpur and Narayanpur were conducted in Kharif 2019–2020 and 2020–2021 to determine the prevalence and severity of foliar diseases, in particular the mungbean leaf spot disease (Cercospora leaf spot disease) caused by Cercospora canescens. The findings revealed that the highest incidence of leaf spot was documented in Mirzapur district (70.03-72.81%) during the first year, followed by Chandauli (59.68-63.89%), Azamgarh (43.07-45.17%), Jaunpur (34.66-37.43%), with the lowest incidence in Varanasi district (24.56-27.68%). In the second year, a similar trend persisted, with Mirzapur (69.82-72.40%) having the highest incidence, followed by Chandauli (59.08-63.27%), Azamgarh (41.59-44.11%), Jaunpur (34.00-35.30%), and the lowest incidence observed in Varanasi district (23.13-26.65%).