Evaluating organic-compliant management strategies for striped cucumber beetle in cucumbers
by Kaiser, Matthew E., M.S., MICHIGAN STATE UNIVERSITY, 2009, 77 pages; 1471854

Abstract:

The use of a squash trap crop, row covers and a polyculture of cucumbers and tomatoes for managing striped cucumber beetle, Acalymma vittatum Fabricius (Coleoptera: Chrysomelidae), was studied in mid-Michigan in 2006 and 2007. The trap crop had a greater effect in reducing beetle presence and injury to cucumber than a cucumber monoculture early in the season, but the benefits were reduced later in the season. Early in the season, striped cucumber beetles reached densities up to three times greater in the cucumber monoculture than in cucumber with a trap crop, and up to six times more beetles on the trap crop than on the cucumbers. The polyculture of cucumber and tomato added to the trap crop treatment provided little to no additional protection. Row covers provided complete striped cucumber beetle exclusion until they were removed to allow for pollination. Other factors tested included distance from the trap crop, and the potential for foliar applications of the biological attractant, cucurbitacin, to enhance the trap crop effect. While there was early season protection of cucumber with these organic-compliant and non-insecticidal management methods, late season protection did not occur, greatly reducing marketable yield due to fruit scarring and reduced fruit production. This study supports the use of trap crops and, when economical, row covers for early season protection of cucumbers from striped cucumber beetle and discusses potential methods for extending protection later in the growing season.

 
AdviserMike Brewer
SchoolMICHIGAN STATE UNIVERSITY
SourceMAI/ 48-02, p. , Nov 2009
Source TypeThesis
SubjectsAgronomy; Ecology; Entomology
Publication Number1471854
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