Efficacy of bio- pesticides and selected chemicals against okra shoot and fruit borer Earias vittella (fab.) on okra [Abelmoschus esculentus (L.) Moench] under field condition at Prayagraj
Author(s): Anupam Dwivedi and Usha Yadav
Abstract: A field trial was conducted to evaluate Efficacy of Bio- pesticides and selected chemicals against Okra Shoot and fruit borer Earias vittella (fab.) on okra [Abelmoschus esculentus (L.) Moench] under field condition at Prayagraj in Kharif season 2023-2024 at Central Research Farm (CRF), SHUATS, Prayagraj, Uttar Pradesh, India. The experiment was laid in Randomised Block Design with eight treatments each replicated thrice using a variety of BS-267. The treatments were against Earias vittella i.e., (T1) Karanj oil 2% EC @ 2 ml/lit., (T2) Garlic bulb extract 3% @ 30 ml/lit., (T3) Flubendiamide 90 SC + Deltamethrin 60 SC @ 5 ml/lit., (T4) Imidacloprid 17.8% SL @ 2.0 ml/lit., (T5) Spinosad 45% SC @ 0.5 ml/lit., (T6) Verticillium lecani (1x108 CFU/g) @ 300 kg/ha and (T7)Metarhizium anisopliae4% WSP (1 × 108 CFU/g) @ 2.5kg/ha and (T8) control plot their influences on yield of okra. Every insecticide was applied twice, separated by 14 days interval. Every plant's shoot and fruit infection was observed the one day before, the 3rd, 7th, and the 14th day following each treatment. When compared to over the control plot, every insecticide that was tested greatly decreased the level of pest infestation. The fruit and shoot infestation percentage that was lowest was observed in 90 SC + Deltamethrin 60 SC (4.40% and 3.29%) and Spinosad 45% SC (4.90% and 3.83%) followed by Imidacloprid 17.8% SL (5.53% and 4.25%), Garlic bulb extract 3% (5.84% and 4.54%), Verticillium lecani (1x108 CFU/g) (6.32% and 5.01%), Metarhizium anisopliae 4% WSP (1 × 108 CFU/g) (6.65% and 5.46%), Karanj oil 2% EC (6.89% and 6.35%).
