Predicting risk of European corn borer infestation in sweet corn based on harvest date

Steve M. Spangler, Dennis D. Calvin, Joe Russo, Jay Schlegel

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Infestation of sweet corn (Zea mays) at harvest by European corn borer (Ostrinia nubilalis) was examined in 16 hybrid/harvest date combinations from 1994 through 1996 in central Pennsylvania.Two general periods of sweet corn ear infestation levels were observed.Infestations, expressed as proportion of ears infested, were 0.11 (11%) or lower in 10 of 11 plots harvested from 21 July to 23 Aug.,whereas they were noticeably higher (30%-88%) in September and early October.Infestations expressed as larvae per ear showed the same temporal pattern.A nonlinear (sigmoidal) relationship was found between degree-days from 1 Jan. and proportion of ears infested.The higher infestations were caused by the secondgeneration larvae of the bivoltine ecotype.Based on these relationships, a riskprediction system is proposed that anticipates, at planting, harvest infestation by using predicted harvest dates of sweet corn, European corn borer life stages, and infestation levels.Examples are presented for multiple plant ngs and hybrids for a specific site and a landscape (Pennsylvania).The risk prediction system we propose will allow growers to anticipate the risk of ear infestations at planting time, thus providing predictions that would help with management decisions.

Original languageEnglish (US)
Pages (from-to)173-180
Number of pages8
JournalHortTechnology
Volume19
Issue number1
StatePublished - Jan 1 2009

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Ostrinia nubilalis
sweetcorn
harvest date
ears
planting
corn ears
prediction
larvae
ecotypes
heat sums
growers
Zea mays

All Science Journal Classification (ASJC) codes

  • Horticulture

Cite this

Spangler, Steve M. ; Calvin, Dennis D. ; Russo, Joe ; Schlegel, Jay. / Predicting risk of European corn borer infestation in sweet corn based on harvest date. In: HortTechnology. 2009 ; Vol. 19, No. 1. pp. 173-180.
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abstract = "Infestation of sweet corn (Zea mays) at harvest by European corn borer (Ostrinia nubilalis) was examined in 16 hybrid/harvest date combinations from 1994 through 1996 in central Pennsylvania.Two general periods of sweet corn ear infestation levels were observed.Infestations, expressed as proportion of ears infested, were 0.11 (11{\%}) or lower in 10 of 11 plots harvested from 21 July to 23 Aug.,whereas they were noticeably higher (30{\%}-88{\%}) in September and early October.Infestations expressed as larvae per ear showed the same temporal pattern.A nonlinear (sigmoidal) relationship was found between degree-days from 1 Jan. and proportion of ears infested.The higher infestations were caused by the secondgeneration larvae of the bivoltine ecotype.Based on these relationships, a riskprediction system is proposed that anticipates, at planting, harvest infestation by using predicted harvest dates of sweet corn, European corn borer life stages, and infestation levels.Examples are presented for multiple plant ngs and hybrids for a specific site and a landscape (Pennsylvania).The risk prediction system we propose will allow growers to anticipate the risk of ear infestations at planting time, thus providing predictions that would help with management decisions.",
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Spangler, SM, Calvin, DD, Russo, J & Schlegel, J 2009, 'Predicting risk of European corn borer infestation in sweet corn based on harvest date', HortTechnology, vol. 19, no. 1, pp. 173-180.

Predicting risk of European corn borer infestation in sweet corn based on harvest date. / Spangler, Steve M.; Calvin, Dennis D.; Russo, Joe; Schlegel, Jay.

In: HortTechnology, Vol. 19, No. 1, 01.01.2009, p. 173-180.

Research output: Contribution to journalArticle

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