INTEGRATED MANAGEMENT OF FUSARIUM WILT AND COLLAR ROT OF CHICKPEA

Abstract

Wilt and collar rot of chickpea caused by Fusarium oxysporum f. sp. ciceri and Sclerotium rolfsii, respectively is a serious disease responsible for maximum yield loss in Bangladesh. For integrated management of Fusarium wilt and collar rot of chickpea, Trichoderma asperellum HSTUT 1, Neem leaf extract and Autostin 50 WDS were selected. In dual culture, T. asperellum HSTUT 1 inhibited the mycelial growth of F. oxysporum and S. rolfsii by 63.33 and 56.66 %, respectively. Well diffusion assay showed that neem leaf extract and Autostin 50 WDG also inhibited the mycelial growth of F. oxysporum by 38.88, 65.22, 73.00 & 86.66% and S. rolfsii by 35.55, 60.77, 66.33 & 74.88%, respectively over control. In the field conditions, combined application of T. asperellum HSTUT 1, neem extract and Autostin 50 WDG resulted higher reduction of wilt incidence by 9.66, 1.21 & 0.00 % and collar rot incidence by 9.14, 2.33 & 0.00% at 30, 45 and 60 DAS, respectively in comparison to other treatments. Combined application of Trichoderma, neem leaf extract and Autostin 50 WDG also exhibited the highest germination (84.55 & 90.22%), highest shoot length (18.24 & 16.10 cm), highest root length (5.92 & 7.30 cm), highest shoot weight (0.88 & 0.83g), highest root weight (0.32 & 0.32g), highest pod number per plant (26, 49.33), highest nodule number per plant (46.33 & 31.00) and highest yield per plant (4.16 & 7.89g), respectively in Fusarium wilt and collar rot pathogen infected plant. The finding of the present study explored the potentiality of the combination of T. asperellum HSTUT 1, neem leaf extract and Autostin 50 WDG in the eco-friendly management of Fusarium wilt and collar rot of chickpea in field conditions.