Efficacy of Non conventional Insecticides on the Incidence of Major Insect Pests of Cabbage

Author: N. Johnson Singh, L. Somendro Singh, Ph. Chandramani Singh, N. Soranganba and Ramgopal Laha

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Abstract

Cabbage, Brassica oleraceae L., is an important cole crop vegetable mostly grown in large area of Manipur. However, higher rate of pest infestation likely to occur, which hinder its total production and consumption. Continuous use of synthetic pesticides in agricultural pest management often leads to various negative impacts such as development of resistance by the pest, adverse effect on non-target organisms and hazardous effect on environment. These drawbacks led to an alternative approaches for control of crucifer pests that are cost effective, biodegradable, low toxic effect on non-target organisms and eco-friendly. The resource poor small scale farmers are unaware for control measures of the pests. Therefore, an experiment was undertaken for consecutive two years during the Rabi (winter season) of 2019-20 and 2020-21 at demonstration unit, ICAR-Krishi Vigyan Kendra, Churachandpur revealed that the combined application of neem oil 0.15% and Spinosad 45% SC significantly reduced the infestation of mean larval population of P. xylostella and P. brassicae (2.0 and 4.0/plant), respectively. The results also indicated that the plots treated with neem oil 0.15% and agricultural petroleum spray oil minimized the incidence of B. brassicae against the untreated control plot. The mean yield varied from 13.0 to 19.7 t/ha was recorded in treated plots compared with 10.40t/ha in the untreated control. This review brings together all the information of different organic based practices for management of crucifer pests and that are being reported. This will help in establishing the knowledge of limited studies on pest management using different non chemical control methods to more challenging research and conveys the importance of pest management system for taking research forward.

Keywords

Cabbage, efficacy, insect pests management, non-conventional insecticides, yield

Conclusion

The study advocates that in cabbage crop grown organically B. brassicae can be managed by using neem oil 0.15% + agricultural petroleum spray oil whereas neem oil 0.15% + Spinosad 45% SC for P. xylostella and P. brassicae, respectively. Management programs that emphasize biological and cultural controls can integrate Spinosad and other insecticides like neem oil and Agricultural petroleum spray oil sparingly, thereby prolonging their usefulness so that the use of chemical pesticides can be minimized.

References

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How to cite this article

N. Johnson Singh, L. Somendro Singh, Ph. Chandramani Singh, N. Soranganba and Ramgopal Laha (2023). Efficacy of Non conventional Insecticides on the Incidence of Major Insect Pests of Cabbage. Biological Forum – An International Journal, 15(10): 93-97.