Evaluation of the Efficacy of Chemical and Non-chemical Insecticides Against Onion Thrips in Field Conditions

Mohammad Hamed Osmankhil; Mohammad Hussain Falahzadah; Nasir Nazari

doi:10.62810/jnsr.v3i1.131

Authors

Mohammad Hamed Osmankhil Department of Plant Protection, Agriculture Faculty, Kabul Umiversity
Mohammad Hussain Falahzadah Department of Plant Protection, Agriculture Faculty, Kabul Umiversity
Nasir Nazari Department of Horticulture, Agriculture Faculty, Alberni University

DOI:

https://doi.org/10.62810/jnsr.v3i1.131

Keywords:

intercropping, Thrips Tabaci, Chemical Insecticides, Botanical Insecticide, Attractive Plant

Abstract

Onion thrips pose a significant threat to onion crops worldwide through their feeding habits, which can lead to visible damage and potential yield loss. ‌This research aimed to investigate the effects of chemical and non-chemical insecticides on the management of onion thrips. This experimental study was conducted at the Faculty of Agriculture, Kabul University, to evaluate the efficacy of different chemical insecticides, a botanical insecticide, attractive plant, and intercropping for the management of onion thrips (Thrips tabaci) (Thysanoptera; Thripidae) on onion crops in 2023. Seven treatments were applied with three replications in a randomized complete block design. The first data collection occurred on July 12, 24 hours before the application of insecticides. Subsequent data were recorded 24 hours, 72 hours, and 7 days after each spray application. Three chemical insecticides were tested: carbaryl (Sevin® 85% WP) at a rate of 650 g/hectare, cyhalothrin (2.5% EC) at a rate of 550 ml/hectare, and cypermethrin (10% EC) at a rate of 400 ml/hectare. Additionally, a botanical insecticide derived from Melia azedarach (water extract of seeds) was applied at a rate of 12 L/hectare. After three applications, carbaryl showed significant efficacy compared to the other two chemical insecticides, while the botanical insecticide did not yield significant results. Attractive plants and intercropping demonstrated significant results when the leaves of the onions began to harden.

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