National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
In this study the field trial was conducted to determine the effect of bio-rational and chemical insecticides and benefit cost ratioat the Central field, Department of Entomology, Sam Higginbottom University of Agriculture Technology and Sciences, Allahabad during kharif 2016. Seven treatments were evaluated against whitefly Bemisia tabaci (Gennadius) viz., T1-Neem oil 0.03%, T2-Verticillum lecanii, T3-Metarhizium anisopliae, T4-Beauveria bassiana, T5-Acetamiprid 20% SP,T6-Imidacloprid 17.8% SL, T7-Triazophos 40% EC. Studies revealed that the lowest infestation of whitefly and incremental benefit cost ratio were observed in Imidacloprid 17.8% SL (1.25 whiteflies/3leaves and 1:9.33)was statistically significant to remaining treatments, followed by Acetamiprid 20% SP (1.64 whiteflies/3leaves and 1:9.00), Triazophos 40% EC (2.31 whiteflies/3leaves and 1:8.48), Neem oil 0.03% (3.95 whiteflies/3leaves and 1:7.19), Verticilium lecanii (4.72 whiteflies/3leaves and 1:4.60), Beauveria bassiana (5.64 whiteflies/3leaves and 1:5.84) and Metarhizium anisopliae (6.04 whiteflies/3leaves and 1:5.60) respectively. The highest yield was recorded in Imidacloprid 17.8% SL (133.8q/ha) then followed by Acetamiprid 20% SP (121.4 q/ha), Triazophos 40% EC (116.12 q/ha), Neem oil (98.46 q/ha), Verticillum lecanii (81.43 q/ha), Beauveria bassiana (78.62 q/ha), Metarhizium anisopliae (77.82 q/ha), as compared to control (62.56q/h).
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