Evaluation of Advanced Mung Bean Germplasm against Cercospora Leaf Spot and its In-vitro Management by Different Fungicides

Abstract

Mung bean (Vigna radiata (L.) R. Wilczek var. radiata)/ green gram is one of the short period legume and poor man protein source along with carbohydrates and vitamins. Cercospora Leaf Spot is a devastating threat to the crop caused by Cercospora canescens, affects the whole crop and 95% yield losses may be attributed in severe conditions. To manage the diseases through tolerant germplasm and with environmentally safe fungicides is a cost-effective approach. The present study was aimed to find the resistant germplasm against the disease and to evaluate the relative efficacy of different fungicides against the C. canesens in lab conditions. Twenty varieties/lines were screened against Cercospora Leaf Spot disease in field conditions. No line/ variety was found immune and only one line (16051) was resistant against this disease. Five different fungicides Cymoxanil 8% + Mancozeb 64% (Curzate), Copper Hydroxide (Champion), Thiophanate-Methyl (Topsin-M), Pyraclostrobin + Metiram (Cabriotop), and Mifenoconazole (Score) were evaluated at 10, 50, 100, and 200 ppm concentration against C. canescens using poisoned food technique. Score at 100 ppm was found most effective (93.03%) against the disease as compared with other fungicides. From present research, it is devised that 16051 line may be used for future breeding program and Score at 100 ppm may be evaluated for field trials in future studies