Management of Onion Thrips Thrips Tabaci Lindeman

Authors

  • H. S. Randhawa Department of Entomology, Punjab Agricultural University, Ludhiana 141004, Punjab
  • R. S. Chandi Department of Entomology, Punjab Agricultural University, Ludhiana 141004, Punjab
  • Amandeep Kaur Department of Entomology, Punjab Agricultural University, Ludhiana 141004, Punjab
  • Damanpreet Punjab Agricultural University Regional Research Station, Gurdaspur 143521, Punjab

DOI:

https://doi.org/10.55446/IJE.2021.322

Keywords:

Onion, Thrips tabaci, fipronil 80WG, dimethoate 30EC, malathion 50EC, efficacy, cost bulb yield, benefits, natural enemies, lady bird beetles, lace wings

Abstract

Field efficacy studies of three insecticides at different doses (fipronil 80WG @ 50, 75, 100 g; dimethoate 30EC @ 500, 625, 750 ml and malathion 50EC @ 625 ml/ ha) were carried out against thrips Thrips tebaci Lindeman and their natural enemies on onion crop during two consecutive rabi seasons of 2018-19 and 2019-20. The experiments were done at farmer’s field near Regional Research Station Gurdaspur. Results revealed that insecticidal treatments significantly reduced thrips incidence (45.12- 79.34% over control), of which dimethoate 30EC and fipronil 80WG were the best. The maximum bulb yield (292.87 q/ ha) was obtained with application of dimethoate 30EC @ 750 ml/ ha which was on par with fipronil 80WG @ 100 g/ ha (287.23 q/ ha). The cost: benefit ratio revealed that highest dose of dimethoate 30EC was superior giving maximum net returns with C: B of Rs. 1: 43. The evaluated insecticides did not have any effect on the natural enemies of onion insect pests.

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Published

2022-06-01

How to Cite

Randhawa, H. S. ., Chandi, R. S., Kaur, A., & Damanpreet. (2022). Management of Onion Thrips <i>Thrips Tabaci</i> Lindeman. Indian Journal of Entomology, 84(2), 402–404. https://doi.org/10.55446/IJE.2021.322

Issue

Section

Research Communications

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