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Updated: Jul 16, 2026
Establishment of a Chilli Thrips (Scirtothrips dorsalis Hood) Rearing System for Virulence Screening of Entomopathogenic Fungi
Published on: July 18, 2025
The susceptibility of onion thrips, Thrips tabaci to Heterorhabditis indicus
A A Al-Siyabi1, M M Kinawy, M Al-Ansri
1Department of Agriculture, School of Agriculture, Policy and Development, The University of Reading, Earley Gate, Reading RG6 6AR, UK. a.a.k.al-siyabi@reading.ac.uk
Abstract:
The potential of the entomopathogenic nematode, Heterorhabditis indicus against Thrips tabaci was tested on foliage and in soil at three concentrations. Soil treatment was more effective than the foliar treatment. At 1.5 million nematodes/m2, nearly 70% mortality was achieved with soil application whereas a similar dose applied to the foliage gave only 55% mortality. Soil application gave better mortality of onion thrips (62 %) at 1 million/m2 compared to foliar application at 1.5 million/m2. Probably this is because the nematodes are more effective against the soil dwelling prepupae and pupae stages of the thrips. The possible explanations for the differences are discussed.
