Efficacy of Pongamia Oil Soap against Earias vitella and Helicoverpa armigera in Okra

Authors

  • Anu Thomas Department of Agricultural Entomology, College of Agriculture, Padannakad, Kerala Agricultural University, 671314, Kerala
  • K M Sreekumar Department of Agricultural Entomology, College of Agriculture, Padannakad, Kerala Agricultural University, 671314, Kerala

DOI:

https://doi.org/10.55446/IJE.2023.1304

Keywords:

Earias vitella, Helicoverpa armigera, okra, pongamia oil soap, neem oil soap, quinalphos, soap solution, fruit damage, shoot damage, feeding deterrency

Abstract

Field evaluation of pongamia oil soap against Earias vitella and Helicoverpa armigera infesting okra was carried out during 2018-19 at the Instructional farm in College of Agriculture, Padannakkad. The treatments consisted of 0.6, 1 and 2% pongamia oil soap, Neem oil soap (0.6%); soap solution (0.5%); quinalphos (0.05%) and control (water). Fourteen days after the third application the shoot damage was found lowest in quinalphos 25EC 0.05% (7.32) followed by pongamia oil soap 2% (12.86) and fruit damage was found lowest in quinalphos 25EC 0.05% (6.41) followed by pongamia oil soap 2% (9.60). The reduction in fruit and shoot damage may be due to the feeding deterrency of pongamia oil which remained effective for seven days and thereafter declined.

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Published

2023-09-01

How to Cite

Thomas, A., & Sreekumar, K. M. (2023). Efficacy of Pongamia Oil Soap against <i>Earias vitella</i> and <i>Helicoverpa armigera</i> in Okra. Indian Journal of Entomology, 1–3. https://doi.org/10.55446/IJE.2023.1304

Issue

Section

Research Communications

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