Title: FIELD EFFICACY OF INSECTICIDES AGAINST MAJOR INSECT PESTS OF PADDY.
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Date
2022-08-11
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Publisher : Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra.
Abstract
Abstract: The present study entitled, ‘FIELD EFFICACY OF INSECTICIDES AGAINST MAJOR INSECT PESTS OF PADDY’ was undertaken at. Dhop Post Jamb Teh. Mohadi, Dist. Bhandara (M.S.) under Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, during kharif2020 as per decision of Board of Studies(BOS). The major objective was to evaluate the efficacy of various insecticides on the major insect pest of paddy and to find out the effect of these treatments on the yield of paddy. The research work was carried on the 496 m2 plot. The experiment of incorporating seven treatments consisting of Cartap hydrochloride 50.00% SP, Chlorantraniliprole 18.50% SC, Flubendiamide 39.35% m/m SC, Flonicamid 50.00% WG, Dinotefuran 20 SG, Pymetrozine 50.00% WG and control (Water spray) against major insect pests of paddy i.e. yellow stem borer, gall midge, leaf folder, green leaf hopper, brown plant hopper and white backed plant hopper. The incidence of dead heart by stem borer and silver shoot by gall midge observed at 15 days after each application and observations of white earheads was recorded prior to harvesting. In case of hoppers population was recorded at 1 days before and 3 days after each application. Leaf folder damage was recorded at 1 days before and 7 days after application. Natural enemies were recorded at 10 days after each application. The experiment was laid out in RBD during kharif2020. The results of experiment were revealed that, yellow stem borer, leaf folder, green leaf hopper, brown plant hopper and white backed plant hopper were the main pests which damaged the crop. From the findings of present investigation of insect pest management the treatment of Chlorantraniliprole 18.50% SC (0.75 % DH) was found significantly superior in reducing the incidence of dead hearts and it was at par with Flubendiamide 39.35% m/m (1.01% DH). And for the management of white earheads (stem borer) of paddy Chlorantraniliprole18.50% SC (2.82 % WE) was found significantly superior treatment over the control and it was at par with Flubendiamide 39.35% m/m (3.26 % WE). The treatment of Cartap hydrochloride 50.00% SP (0.09 % SS) was found significantly superior over control in reducing the incidence of gall midge and it was at par with Chlorantraniliprole 18.50% SC (0.30 % SS) and Flubendiamide 39.35% m/m (0.40% SS). Treatment of Chlorantraniliprole 18.50% SC (0.54 % damaged leaves) was found significantly superior in reducing the incidence of leaf folder than other treatments and it was at par with Flubendiamide 39.35% m/m (0.82% damaged leaves). Treatment of Dinotefuran 20 SG (1.00 nos./hill) was found significantly superior in reducing the population of green leaf hopper over the control and at par with Flonicamid 50.00% WG (1.50 nos./hill). The treatment with Dinotefuran 20 SG (2.50 nos./hill) was found significantly superior over control in reducing the population of brown plant hopper and at par with Flonicamid 50.00% WG (3.17 nos./hill) and Pymetrozine 50.00% WG (3.50 nos./hill). Treatment of Dinotefuran 20 SG (2.17 nos./hill) was found significantly superior over control in reducing the population of white backed plant hopperand at par with Flonicamid 50.00% WG (3.00 nos./hill) and Pymetrozine 50.00% WG (3.17 nos./hill). Regarding to natural enemies, among insecticides, the treatment of Chlorantraniliprole 18.50% SC was found superior with higher population of brown mirid bug, green mirid bug, coccinellid beetle and spiders. The maximum yield recorded in the treatment Chlorantraniliprole 18.50% SC (49.03 q/ha) and at par with the treatments Flubendiamide 39.35% m/m (46.19 q/ha) and Cartaphydrochloride 50.00% SP (44.61 q/ha). However, the highest ICBR was found in the treatment with treatment Flubendiamide 39.35% m/m SC (1:4.80) followed by Cartap hydrochloride 50.00% SP (1:3.27) and Flonicamid 50.00% WG (1:3.25).
Description
Description: The experiment was undertaken at. Dhop Post Jamb Teh. Mohadi, Dist. Bhandara (M.S.) under Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, during kharif2020.The treatment comprised of insecticides Cartap hydrochloride 50.00% SP, Chlorantraniliprole 18.50% SC, Flubendiamide 39.35% m/m SC, Flonicamid 50.00% WG, Dinotefuran 20 SG, Pymetrozine 50.00% WG and control (Water spray) which were executed in randomized block design with three replications.
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Citation
Citation: SHENDE, MOHANDAS SHIVAJI.(2021).Field Efficacy of Insecticides Against Major Insect Pests of Paddy. Department of Agril. Entomology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. M.Sc. 2021. Print. XII, 98p. (Unpublished).