Black cutworm damage and recovery of corn plants: influence of pyrethroid and organophosphate soil insecticide treatments

Hassan Oloumi-Sadeghi, Eli Levine, Kevin L. Steffey, Michael Gray

Research output: Contribution to journalArticlepeer-review

Abstract

Selected registered and experimental insecticides applied at planting time or as rescue treatments were evaluated for controlling black cutworm (BCW), Agrotis ipsilon (Hufnagel), larvae in artificial infestations of corn plants within barrier arenas during 1989 and 1990 in Illinois. Rescue treatments were more effective than planting-time treatments in controlling BCW. A proportion of the cut plants in both treated and untreated plots regrew and had recovered by the final sampling date. Recovery of the corn plants was related to the location of BCW injury on the plant, the method of insecticide application, and the type of insecticide used. Leaf feeding by BCW did not influence yield, but whorl feeding decreased yield by 20.3% compared with yields obtained from undamaged plants. Although some plants cut at the soil surface produced ears, 76.0% of the yield was lost because of BCW injury in these plots. Plants cut below the soil surface did not produce ears.

Original languageEnglish (US)
Pages (from-to)323-328
Number of pages6
JournalCrop Protection
Volume11
Issue number4
DOIs
StatePublished - Aug 1992

Keywords

  • Agrotis ipsilon
  • Zea mays
  • plant recovery
  • soil insecticides

ASJC Scopus subject areas

  • Agronomy and Crop Science

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