Comparative Efficacy of Bioinoculents, Organic Amendments and Pesticides Against Rhizoctonia solani Alone on Tomato CV. K-25 under Pot Conditions

Studies were undertaken to determine the comparative efficacy of native biocontrol agents viz., Pseudomonas fluorescens isolate PS-4, Trichoderma harzianum isolate TH-H-3 and T. virens isolate TV-K-3 @ 5X10 cfu/g talc; organic amendments viz., neem seed powder @ 250 mg/kg soil and farmyard manure @ 8 1500 mg/kg soil; carbofuran @ 33.4 mg/kg soil, topsin-M @ 1.4 mg/kg soil and bavistin @ 2.0 mg/kg soil against Rhizoctonia solani @ 1.5 g mycelial mat/kg soil on tomato cv. K-25 under pot conditions. Results revealed that all the treatments significantly increased the plant growth, fruit yield and decreased the root infection by the R. solani on tomato as compared to untreated inoculated plants. Highest plant dry weight (46.2 g) and fruit yield (213.0 g) was obtained in plants treated with T. harzianum followed by bavistin, P. fluorescens, topsin-M, T. virens, neem seed powder, carbofuran and farmyard manure, respectively. The highest reduction in root infection by the fungus (5.0%) was found in plants treated with T. harzianum followed by bavistin, P. fluorescens, topsin-M, T. virens, neem seed powder, carbofuran and farmyard manure, respectively.