Performance of Chemical and Botanicals against Cercospora Leaf Spot (CLS) of Mungbean

Abstract

Cercospora leaf spot is one of the major disease in Bangladesh and may be considered as one of the chief limiting factors where mungbean is cultivated. Advancement in resistant varieties are the positive approach for controlling the disease while several protective fungicides effectively control the disease. But sustainable resistance could not be activated so far. We conducted this experiment to know the effects of botanicals and chemicals on Cercospora leaf spot disease of mungbean and direct effects on mungbean yield. A high yielding, disease tolerant variety (BARI mung-4) was used as experimental sample and treatment plots were set in Sylhet in 2014. Total seven different treatments were applied randomly. Different variation in germination of mungbean seeds in the field were found. Minimum disease incidence (5.87%) and disease severity (2.30%) were found in combined treatment of Bavistin 50WP+Secure 600WP (T5) and gave better response in yield (1482.67 kg/ha). The result of the present study suggest that the integrated use of these treatments effectively minimize the incidence and severity of Cercospora leaf spot, as well as increase its yield.