The Journal of Phytopharmacology, 2022;11(5):368-370 ; DOI:10.31254/phyto.2022.11510
Bio-Efficacy of Chemical Insecticides Against Defoliators Spodoptera litura and Achaea janata in Castor
Bharadiya AM1 , Madariya RB1 , Bhut JB2 , Khanpara DV1
1. Main Oilseeds Research Station, Junagadh Agricultural University, Junagadh- 362001, Gujarat, India
2. Assistant Research Scientist (Ento.) Main Oilseeds Research Station, Junagadh Agricultural University, Junagadh- 362001, Gujarat, India
*Author to whom correspondence should be addressed.
Received: 17th August, 2022 / Accepted: 13th October, 2022 / Published : 31st October, 2022
Field experiments on bio-efficacy of chemical insecticides against defoliators Spodoptera litura andAchaea janata in castor was carried out at Main Oilseeds Research Station, Junagadh AgriculturalUniversity, Junagadh during consecutive three year i.e. 2015-16, 2016-17 and 2017-2018. All thetreatments were significantly superior over untreated check. Results of the experiment indicated thatlowest number of larvae per plant for S. litura and A. janata was recorded in the treatment ofchlorantraniliprole 18.5 SC 0.006% (0.42 & 0.22 larvae/plant), which was at par with the most of theinsecticidal treatments except the treatment of poneem after three days of the first spray. More or lesssimilar trend was observed after 7 and 14 days of first spray as well as 3,7 and 14 days after secondspray. The highest net return was recorded in treatment of indoxacarb 14.5 SC 0.0073% (Rs. 31870/-)followed by the treatment chlorantraniliprole 18.5 SC 0.006% (Rs. 31080/-), spinosad 45 SC 0.009%(Rs.29240/-) and emamectin benzoate 5 % WG 0.002 % (Rs. 26232/-). Looking to the ICBR, thetreatment of profenophos 40 % + cypermethrin 4% 44 EC noted the highest ICBR i.e. (1:11.60) followedby the treatment of chlorpyriphos 20 EC 0.05% (1: 10.20), indoxacarb 14.5 SC 0.0073% (1:9.30) andemamectin benzoate 5 % WG 0.002 % (1:7.30).
Castor, Bio efficacy, Defoliators, Spodoptera litura, Achaea janata.
HOW TO CITE THIS ARTICLE
Bhut JB, Khanpara DV, Bharadiya AM, Madariya RB. Bio-Efficacy of ChemicalInsecticides Against Defoliators Spodoptera litura and Achaea janata in Castor. JPhytopharmacol 2022; 11(5):368-370. doi: 10.31254/phyto.2022.11510
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