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Host plant selection by Helicoverpa spp. in chickpea-companion cropping systems

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Sequeira, R. V., McDonald, J.L., Moore, A.D., Wright, G.A. and Wright, L.C. (2001) Host plant selection by Helicoverpa spp. in chickpea-companion cropping systems. Entomologia Experimentalis et Applicata, 101 (1). pp. 1-7. ISSN 0013-8703

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Article Link: https://doi.org/10.1046/j.1570-7458.2001.00884.x


The potential of companion crops to serve as diversionary hosts for ovipositing Helicoverpa spp. moths in chickpea cropping systems was evaluated in a field experiment. Patterns of egg distribution by Helicoverpa spp. within paired combinations of chickpea and each of six companion crop species were documented in a split-plot design sampled four times during the 1999 winter growing season. Chickpea was attractive to ovipositing Helicoverpa moths from as early as 14 days after planting and throughout the experimental period. The companion crop species varied in relative attractiveness to ovipositing moths but none was able to effectively divert Helicoverpa egg pressure away from chickpea for the duration of the experiment. Of all Helicoverpa spp. larvae recorded from all samples and crop combinations, 98.3% were found on chickpea. A marked aggregative oviposition behaviour of Helicoverpa spp. on tall weeds growing through the chickpea canopy was recorded. The relevance of observed patterns of host selection and inferred moth behaviour to management of Helicoverpa populations on chickpea are discussed.

Item Type:Article
Subjects:Plant pests and diseases > Pest control and treatment of diseases. Plant protection > Organic plant protection. Biological control
Live Archive:09 Jan 2024 05:55
Last Modified:09 Jan 2024 05:55

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