Abstract
Background: The pulses are important crop of Bundelkhand region of Uttar Pradesh. Among the pulses, mungbean is an important. Despite the multifaceted importance of this crop, its production could not be stabilized in the Uttar Pradesh as well as in the country due to several biotic constraints like diseases and insect-pests leading to considerable yield losses. Among several diseases affecting mungbean, cercospora leaf spot (CLS) caused by Cercospora canescens Ellis and Martin is one of the most important fungal diseases occurring regularly in the mungbean growing areas during the warm and humid weather. Methods: Experiments were conducted during two cropping seasons i.e. Kharif 2019 and 2020 to find out an efficient management strategy for this disease. In first experiment, 9 fungicides were assessed against CLS during both the seasons. In second experiment, 200 germplasm of mungbean were evaluated for resistance against cercospora leaf spot. Result: Among nine different fungicide treatments evaluated individually and as well as in combinations, spraying Carbendazim twice after first appearance of symptoms and second at 15 days’ interval, gave maximum reduction in the incidence and severity of Cercospora leaf spot i.e. 45.57% and 58.45%, respectively along with significant enhancement (53.39%) in grain yield over the unprotected crop followed by treatment with Carbendazim + Mancozeb which resulted in 35.44% and 52.65% reduction in incidence and severity respectively and 44.88% enhancement in yield. Treatment with Captan + Hexaconazole was found to be least effective to reduce the disease incidence/ severity as well as to increase the crop yield. In second field experiment out of 200 mungbean genotypes evaluated against cercospora leaf spot during two consecutive crop seasons, four genotypes viz., PDM 04-123, PDM 54, EC520034-1 and EC 520022 were found to be resistant against cercospora leaf spot disease.
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