Population densities of corn flea beetle (Coleoptera: Chrysomelidae) and incidence of stewart's wilt in sweet corn

K. A. Cook, R. A. Weinzierl, J. K. Pataky, P. D. Esker, F. W. Nutter

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

To quantify populations of the corn flea beetle, Chaetocnema pulicaria Melsheimer (Coleoptera: Chrysomelidae), and refine estimates of a threshold for its control to prevent Stewart's wilt caused by Erwinia stewartii, sequential plantings of 'Jubilee' sweet corn were made at 2-wk intervals from April or May through August or September 2001 and 2002 at four locations from southern to northern Illinois: Simpson, Brownstown, Champaign, and Mendota. Densities of C. pulicaria and incidence of Stewart's wilt were monitored weekly. At Mendota, where C. pulicaria populations were decimated by cold temperatures during winter 2000-2001, densities reached 33.3 beetles per 15-cm yellow sticky trap per day by September 2002, after a mild 2001-2002 winter. Maximum incidence of Stewart's wilt in single plots at Simpson, Brownstown, Champaign, and Mendota was 22, 36, 39, and 2%, respectively, in 2001, and 33, 47, 99, and 87%, respectively, in 2002. In 24 plots where beetle densities were ≤2 per trap per day, Stewart's wilt incidence was <5% in 20 plots. We propose that two corn flea beetles per trap per day be used as a threshold for insecticide application to seedlings to control C. pulicaria and minimize subsequent incidence of Stewart's wilt in processing sweet corn. Enzyme-linked immunosorbent assays indicated that E. stewartii incidence in C. pulicaria peaked at 67, 62, and 54%, respectively, at Simpson, Brownstown, and Champaign, in 2001, and at 71, 76, and 60%, respectively, in 2002. Further studies might allow the use of areawide or field-specific estimates of E. stewartii incidence in corn flea beetles for adjusting management decisions.

Original languageEnglish (US)
Pages (from-to)673-682
Number of pages10
JournalJournal of economic entomology
Volume98
Issue number3
DOIs
StatePublished - Jun 2005

Fingerprint

Chaetocnema pulicaria
wilt
flea
sweetcorn
Chrysomelidae
angle of incidence
beetle
population density
maize
Coleoptera
Pantoea stewartii subsp. stewartii
winter
traps
insecticide
sticky traps
seedling
assay
enzyme
pesticide application
planting

All Science Journal Classification (ASJC) codes

  • Ecology
  • Insect Science

Cite this

Cook, K. A. ; Weinzierl, R. A. ; Pataky, J. K. ; Esker, P. D. ; Nutter, F. W. / Population densities of corn flea beetle (Coleoptera : Chrysomelidae) and incidence of stewart's wilt in sweet corn. In: Journal of economic entomology. 2005 ; Vol. 98, No. 3. pp. 673-682.
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abstract = "To quantify populations of the corn flea beetle, Chaetocnema pulicaria Melsheimer (Coleoptera: Chrysomelidae), and refine estimates of a threshold for its control to prevent Stewart's wilt caused by Erwinia stewartii, sequential plantings of 'Jubilee' sweet corn were made at 2-wk intervals from April or May through August or September 2001 and 2002 at four locations from southern to northern Illinois: Simpson, Brownstown, Champaign, and Mendota. Densities of C. pulicaria and incidence of Stewart's wilt were monitored weekly. At Mendota, where C. pulicaria populations were decimated by cold temperatures during winter 2000-2001, densities reached 33.3 beetles per 15-cm yellow sticky trap per day by September 2002, after a mild 2001-2002 winter. Maximum incidence of Stewart's wilt in single plots at Simpson, Brownstown, Champaign, and Mendota was 22, 36, 39, and 2{\%}, respectively, in 2001, and 33, 47, 99, and 87{\%}, respectively, in 2002. In 24 plots where beetle densities were ≤2 per trap per day, Stewart's wilt incidence was <5{\%} in 20 plots. We propose that two corn flea beetles per trap per day be used as a threshold for insecticide application to seedlings to control C. pulicaria and minimize subsequent incidence of Stewart's wilt in processing sweet corn. Enzyme-linked immunosorbent assays indicated that E. stewartii incidence in C. pulicaria peaked at 67, 62, and 54{\%}, respectively, at Simpson, Brownstown, and Champaign, in 2001, and at 71, 76, and 60{\%}, respectively, in 2002. Further studies might allow the use of areawide or field-specific estimates of E. stewartii incidence in corn flea beetles for adjusting management decisions.",
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Population densities of corn flea beetle (Coleoptera : Chrysomelidae) and incidence of stewart's wilt in sweet corn. / Cook, K. A.; Weinzierl, R. A.; Pataky, J. K.; Esker, P. D.; Nutter, F. W.

In: Journal of economic entomology, Vol. 98, No. 3, 06.2005, p. 673-682.

Research output: Contribution to journalArticle

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