Field Experiment on Efficacy of Selected Bio-agents and Botanical in the Management of Fusarial Wilt of Tomato (Lycopersicon esculentum L.)

The study was conducted in the department of Plant Pathology SHUATS, Prayagraj to investigate mycoparasitism inhibitory effects of Trichoderma spp, Pseudomonas spp, neem leaves extract and carbendazim on the growth of the Fusarium oxysporum f.sp. lycopersici which causes wilt of tomato insitu. Under field conditions, Trichoderma harzianum was used @ 2% (w/v) seedling root dip + 5g/kg soil application, Trichoderma viride 2% (w/v) seedling root dip + 5g/kg soil application, Pseudomonas fluoresens 2% (w/v) seedling root dip + 5g/kg soil application, Trichoderma harzianum + Pseudomonas fluoresens 2% (w/v) seedling root dip + 5g/kg soil application, Neem leaves extract 10% concentration at 1:1 ratio, 3liters/m² and carbendazim 0.1g/kg seedling root dip were applied. Result showed that all the treatments significantly reduced disease incidence (%) wilt and gave higher yield (q/ha) per plant but the most effective treatment was carbendazim as compared to control. All the treatments significantly increased plant height, fresh and dry shoot weight (g), fresh and dry root weight (g), bio-agent T. harzianum were the best in field conditions.