Efficacy of Few Novel Insecticides in Controlling Shoot and Fruit borer, Leucinodes orbonalis Guenee Infesting Brinjal and Impact on it’s Natural Enemy (Trathala flavo-orbitalis)

Author: Pramod Kumar Prusti, M.K. Tripathy, R. Mohapatra, R. Bhola, P. Tripathy and T. Khandaitaray

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Abstract

A field experiment was carried out during 2021-22 at the experimental farm of Department of Entomology, Odisha University of Agriculture and Technology (OUAT), Bhubaneswar to evaluate the efficacy of five insecticides and their sequential spraying. Altogether five sprays were given. The findings revealed that the insecticide spinetoram 11.7 SC was effective and significantly superior over other treatments in reducing the shoot and fruit borer infestation with least effect on natural enemy (Trathala flavo-orbitalis). This was followed by efficacy of flubendiamide 39.35 SC and chlorantraniliprole 18.5 SC for controlling Leucinodes orbonalis in brinjal. Spinetoram 11.7 SC, spinosad 45 SC and emamectin benzoate 5 SG are the best insecticides as far as their toxicity to natural enemy is concerned. Maximum benefit cost ratio was obtained from spinetoram11.7 SC (3.11) application followed by flubendiamide 39.35 SC (3.03). The net profit was highest (Rs. 1,75,667) in spinetoram 11.7 SC treated plot and lowest (Rs. 1,11,797) in emamectin benzoate 5 SG whereas Rs.73,217 in control plot.

Keywords

Novel insecticide, Spinetoram, Efficacy, Brinjal shoot and fruit borer, Trathala flavo-orbitalis

Conclusion

Among the insecticides evaluated against brinjal shoot and fruit borer, spinetoram 11.7 SC applied at the dose of 500 ml/ha was found to be the most effective one in reducing the infestation of shoot and fruit borer in brinjal and increasing the yield. This was followed by flubendiamide 39.35 SC and Chlorantraniliprole 18.5 SC. Sequential spraying of insecticides was the next best followed by spinosad 45 SC. Emamectin benzoate 5 SG was recorded as the least effective among all the treatments. Spinetoram 11.7 SC was found as the safest insecticide to natural enemy Trathala flavo-orbitalis followed by spinosad 45 SC whereas flubendiamide 39.35 SC was found as the most unsafe to it.

References

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How to cite this article

Pramod Kumar Prusti, M.K. Tripathy, R. Mohapatra, R. Bhola, P. Tripathy and T. Khandaitaray (2023). Efficacy of Few Novel Insecticides in Controlling Shoot and Fruit borer, Leucinodes orbonalis Guenee Infesting Brinjal and Impact on it’s Natural Enemy (Trathala flavo-orbitalis). Biological Forum – An International Journal, 15(4): 989-995.