Mortality Responses of Helicoverpa armigera (Lepidoptera: Noctuidae) against Different Insecticides under Laboratory Conditions
Mortality Responses of Helicoverpa armigera (Lepidoptera: Noctuidae) against Different Insecticides under Laboratory Conditions
Muhammad Usman Asif1*, Sadam Hussain Soomro2, Raza Muhammad1, Sikandar Ali Soomro2
ABSTRACT
Toxicity of five different insecticides viz., Uniron 10 EC, Bio Care TM 16000 IU/mg, Voliam Flexi 300 SC, Neomed 3 SC and Coragen 20 SC was recorded against 3rd instar larvae of Helicoverpa armigera under laboratory conditions at their low, recommended and high doses by leaf dip method. The results concluded that significantly high toxicity was shown after treatment with Neomed 3 SC which caused 100 % to the insect at its recommended (200 ml) and high dose (400 ml) after 24 hours of application followed by Voliam Flexi 300 SC causing 66.66 % and 75% mortality on its recommended (80 ml) and high dose (160 ml), respectively. After 72 hours, 83.33% mortality was observed in Voliam Flexi on its recommended dose whereas percent mortality was reached to 100% on its high dose. Uniron 10 EC was also found effective and statistically at par with Voliam Flexi 300 SC causing 100 % mortality at its recommended dose after 96 hours of exposure. However, Bio CareTM 16000 IU/mg consisting of Bacillus thuringiensis was least effective at its recommended dose with percent mortality of 25% and 41.66% after 72 and 96 hours, respectively. It is thus concluded that Neomed 3 SC is the most effective insecticide against 3rd instar larvae of H. armigera as compared to other tested insecticides.
Novelty Statement | This study reported the efficacy of newer synthetic insecticides in comparison with biopesticide containing Bacillus thruingiensis against Helicoverpa armigera.
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December 2020
Vol. 35, Iss. 2, pp. 167-268
