First-generation European corn borer (Lepidoptera: Pyralidae) response to three conservation tillage systems in Minnesota

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Abstract

Plant injury and densities of mature larvae by first-generation Ostrinia nubilalis were examined in chisel-plow, ridge-tillage, and no-tillage maize Zea mays. Tillage plots were split with and without terbufos application and with and without Bacillus thuringiensis-permethrin application in all combinations. Chisel-plow suffered greater plant injury than ridge-tillage or no-tillage, probably because oviposition was greater in chisel-plow. Ovipositing females were not responding primarilty to plant height or developmental stage. Soil surface temperatures were higher in chisel-plow during the early evening when oviposition occurred; microclimate probably influenced female oviposition. Larval density was highest in chisel-plow maize that received terbufos. -from Authors

Original languageEnglish (US)
Pages (from-to)2455-2461
Number of pages7
JournalJournal of economic entomology
Volume83
Issue number6
DOIs
StatePublished - Jan 1 1990

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