Effects of Interplanting Flowering Plants on the Biological Control of Corn Earworm (Lepidoptera: Noctuidae) and Thrips (Thysanoptera: Thripidae) in Sweet Corn.
作者： Roshan Manandhar , Mark G. Wright
DOI: 10.1093/JEE/TOV306
关键词:
摘要: Natural enemy exploitation of food resources and alternative hosts in noncrop vegetation has been shown to be an effective means enhancing natural populations diversified agro-ecosystem. Field trials were conducted Hawaii examine effects interplanting flowering plants on 1) parasitism corn earworm, Helicoverpa zea (Boddie) eggs by Trichogramma spp., 2) abundance Orius spp. relation prey (H. thrips [primarily, Frankliniella occidentalis (Pergande) williamsi Hood]). Sweet (maize), Zea mays L., was interplanted with three plants, buckwheat, Fagopyrum esculentum Moench, cowpea, Vigna unguiculata (L.), sunn hemp, Crotolaria juncea at 2:1 4:1 (corn: plant) ratios 2009 2010, respectively. In 2009, the significantly greater buckwheat-interplanted treatment compared monocrop control similar levels availability, indicating buckwheat flowers might have provided both nectar resources. cowpea hemp a source alternate host insect's for oviposition, resulting higher H. cowpea- hemp-interplanted treatments control. Despite differences pest interactions two field trials, our findings suggested that provisioning through is important predation
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