Vol. 11, Issue 12 (2022)

Author(s):
Manpreet Kaur, Prince Kumar Gupta and KPS Kushwaha

Abstract:
Among the fungal diseases, Web blight, caused by Rhizoctonia solani Kuhn (Teleomorph: Thanatephorus cucumeris Donk), a ubiquitous opportunistic pathogen, is an important fungal disease of Mungbean. The potential losses due to web blight alone in India have been up to 20-60 percent. In present study an attempt was made in Pulse Pathology Laboratory, Department of Plant Pathology, GBPUAT, Pantnagar, to investigate the efficacy of five different fungicides (Hexaconazole, Propiconazole, Pyraclostrobin + Metiram, Carboxin + Thiram, and Carbendazim) against the mycelial growth of R. solani at 15, 25, 50, 100, 150 ppm concentration using poison food techniques. Significantly, all the tested fungicides inhibited the mycelial growth of the pathogen i.e., fungi but hexaconazole was found highly effective at lower concentration (15 ppm) inhibiting 100 percent mycelial growth. However, Propiconazole inhibit the growth by 100% at 100 ppm concentration. Carboxim +Thiram and Carbendazim were found least effective even at higher concentrations (150 ppm) over the control. The inhibitory effect of the tested fungicides was increased with increasing fungicide concentrations.