EVALUATION OF BOTANICALS AND SYNTHETIC INSECTICIDES AGAINST MAJOR PESTS OF OKRA
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Date
2017-07-03
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Dr.PanjabraoDeshmukhKrishi Vidyapeeth,Akola
Abstract
The present investigation entitled “Evaluation of botanicals and synthetic insecticides against major pests of okra” was conducted during Kharif season of 2016-2017 at Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola in Randomized Block Design with ten treatments and three replications to evaluate the botanicals and insecticides viz., Dashparni Extract 15% @ 12.5 ml/L, Dashparni Extract 15% @ 25 ml/L, Fresh Neem Leaf Extract (NLE) 5%, Fermented Neem Leaf Extract (NLE) 10%, NSE (Neem Seed Extract) 5%, NSE (Neem Seed Extract) 7%, Azadirachtin 300 ppm @ 5 ml/L, Dimethoate 30 EC @ 1.5ml/L and Fenpropathrin 30 EC @ 1.5ml/L and untreated control. Total five sprays of the above treatments were done at an interval of 11 days commencing first application at 20 days after germination of crop.
The treatment Fenpropathrin 30 EC @ 1.5 ml/L followed by treatments Dimethoate 30 EC @ 1.5 ml/L, Dashparni extract @ 25 ml/L, NSE (Neem Seed Extract) @ 7% and Azadirachtin 300 ppm @ 5 ml/L were found significantly effective in recording lower percentage of shoot damage due to shoot and fruit borer at 30 DAG and 45 DAG. In case of fruit infestation on number and weight basis, treatment Fenpropathrin 30 EC @ 1.5 ml/L followed by treatments Dimethoate 30 EC @ 1.5 ml/L, treatment Dashparni extract @ 25 ml/L, NSE @ 7% were highly effective in recording lower percentage of fruit infestation on number and weight basis.
The treatment Fenpropathrin 30 EC @ 1.5 ml/L followed by treatments Dimethoate 30 EC @ 1.5 ml/L, treatment Dashparni extract @ 25 ml/L, NSE 7% and Dashparni extract @ 12.5 ml/L were found significantly effective in recording lower population of sucking pests i.e leafhopper, aphids, whitefly and mites.
Delterious effect of treatments of botanicals and chemicals insecticides were not observed on predators on okra throughout the season and all treatments were safer and effective in conservation of the natural enemies. Though numerically maximum natural enemies were recorded in untreated control > botanicals > chemical insecticides.
Treatment Fenpropathrin 30 EC @ 1.5 ml/L followed by treatments Dimethoate 30 EC @ 1.5 ml/L, NSE 7% and Dashparni extract @ 25 ml/L were found economically most viable treatment as they had recorded the ICBR with net monetary return viz. 1:9.98 and Rs.69530/ha, 1:9.02 and Rs.59450/ha, 1:6.40 and Rs.42260/ha and 1:5.62 and 39825/ha, respectively and the lowest ICBR (1:2.91) and net monetary return of Rs.18230/ha was obtained in Fresh Neem Leaf Extract (NLE) 5%.
Description
The present study entitled Evaluation of botanicals and synthetic
insecticides against major pests of okrato find out botanicals and
insecticidesthe eco-friendly, effective, economic and may prove less
interfering with natural fauna on major pest of okra.
Keywords
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Citation
SHINGARE, TUKARAM GANGADHAR. (2017).Evaluation of Botanicals and synthetic insecticides against major pests of okra. Department of Agricultural Entomology. Dr. Panjabrao Deshmukh Krishi Vidhyapeeth,M. Sc. 2017,xii, 137p,(Unpublished).