2024, Vol. 9, Special Issue 1

A field experiment was conducted in the naturally ventilated polyhouse of Mr. Raju More, at At/post Porle, Tarfe Thane, Tal-Panhala, Dist-Kolhapur, Maharashtra during the summer 2023. The experiment followed a randomized block design with three replications and included eight treatments: T₁- acetamiprid 20 WP, T₂- fipronil 5 SC, T₃ imidacloprid 17.8 SL, T₄ dimethoate 30 EC, T₅ clothianidin 50 WDG, T₆- thiamethoxam 25 WG, T₇- acephate 75 SP and T₈ -untreated control. The objective was to study the bio efficacy of pesticides against thrips (Scirtothrips dorsalis Hood,) infesting rose under naturally ventilated polyhouse. The results revealed that treatment with T₂- fipronil 5 SC @ 1ml/L found most superior for the management of rose thrips and the efficacy of pesticides for the management of rose thrips was as follows acetamiprid 20 WP @ 0.5g/L, T₃ imidacloprid 17.8 SL - @ 0.5ml/L, T₆- thiamethoxam 25 WG @ 1g/L, T5 clothianidin 50 WDG - @ 0.25g/L, T7- acephate 75 SP @ 0.5g/L and T₄ dimethoate 30 EC - @ 1ml/L against untreated control at 1, 7, and 15 days post-spraying. The maximum per cent reduction over untreated control was observed in fipronil 5 SC (62.37%) followed by acetamiprid 20 WP (61.27%). The highest incremental cost-benefit ratio (ICBR) were recorded in T₁- acetamiprid 20 WP 1:4.50 followed by T₂- fipronil 5 SC 1:4.12 i.e. T₁ acetamiprid 20 WP > T2 fipronil 5 SC > T3 imidacloprid 17.8 SL > T₇ acephate 75 SP > T₅ clothianidin 50 WDG > T₄ dimethoate 30 EC > T6 thiamethoxam 25 WG > Untreated control.