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Impact of Different Insecticidal Modules on Pod Borer Complex in Pigeonpea

Author: M. Sreekanth*, G.M.V. Prasada Rao, M.S.M. Lakshmi and M.V. Ramana

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Abstract

Ravages by different pod borers during flowering and pod formation stage of pigeonpea are the major bottlenecks in attainment of desired productivity levels of pigeonpea along with sucking pests like jassids and cow bugs in severe case. The pod borer complex comprising, gram pod borer, Helicoverpa armigera, spotted pod borer, Maruca vitrata and pod fly, Melanagromyza obtusa cause a yield loss up to 60 per cent. Seven insecticidal modules along with an untreated control were evaluated in randomized block design (RBD) at Regional Agricultural Research Station, Lam, Guntur for three years i.e., from 2015-16 to 2017-18 on redgram var. ICPL 85063 (Lakshmi) under rain-fed conditions. The results revealed that insecticidal module consisting of chlorantraniliprole, followed by flubendiamide and dimethoate at 15 days interval starting from 50% flowering stage of the crop was found effective and recorded low pod damage due to H. armigera, M. vitrata and M. obtusa (2.5, 4.9 and 7.7 per cent pod d

Keywords

Cost benefit ratio, Insecticides, Pigeonpea, Pod borers, pod borer complex.

Conclusion

The present findings conclude that application of chlorantraniliprole 18.5 SC @ 0.3 ml/l, followed by flubendiamide 480 SC @ 0.2 ml/l and dimethoate 30 EC @ 2.0 ml/l at 15 days interval starting from 50% flowering stage of the crop will contain the pod borer complex on pigeonpea with more yield and high monetary returns. Further, it was suggested that the future scope in the research will be on the evaluation of new combination molecules or bio-pesticides to safe guard the environment and also to delay the development of resistance.

References

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How to cite this article

Sreekanth, M., Rao, G.M.V.P., Lakshmi, M.S.M. and Ramana, M.V. (2021). Impact of Different Insecticidal Modules on Pod Borer Complex in Pigeonpea. Biological Forum – An International Journal, 13(3a): 374-379.