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This study aimed to investigate the disease management of Cercospora leaf spot of Mungbean Vigna radiata (L.) Wilezek by fungicides, plant extract and bio-agent. The mungbean crop is infected by a large number of pathogens such as fungi, bacteria, virus and nematodes in which mungbean Cercospora Leaf Spot causes significantly losses. At present Cercospora Leaf Spot is being managed by using fungicide through seed and soil treatment. However, fungicides are more costly and pollutant to environment. Many plant extracts are known to have antifungal activity. During the present investigation of eight treatments: Chlorothalonil @ 0.1% /lit (T1), Copper hydroxide @ 0.1% /lit (T2), Azoxystrobin @ 0.1% /lit (T3), Neem (Azadirachta indica) @ 10 ml /lit (T4), Madar (Calotropsis gigantea) @ 10 ml /lit (T5), Tulsi (Ocimum sanctum) @ 10 ml /lit (T6), and Trichoderma viride @ 4 gm/lit (T7) were evaluated for fungi toxicity against C. canescens by using poison food technique. The percent inhibition in radial growth of Cercospora canescens was maximum in Chlorothalonil (3.83 to 6.45 mm) to T. viride (15.66 to 18.86 mm) at 48 to 120 hrs of incubation period. The radial growth in check was (38.00 to 85.00 mm). Maximum percent inhibition of mycelial growth was varies from Chlorothalonil (89.92 to 92.41%) to T. viride (58.78% to 77.81%) at 48 to 120 hrs of incubation period.
Yadav et al. (Fri,) studied this question.