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Title:Impact of Natural Mortality Factors on Populations of the European Corn Borer in Bt- and Non-Bt-Corn Fields in Illinois
Author(s):Venditti, Maria Eugenia Del Valle
Doctoral Committee Chair(s):Kevin L. Steffey
Department / Program:Agronomy
Discipline:Agronomy
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:Ph.D.
Genre:Dissertation
Subject(s):Biology, Entomology
Abstract:In 1997 and 1998, field studies were conducted to evaluate the incidence of natural enemies of European corn borer in Bt cornfields. The findings were compared with assessments of the effects of natural enemies in non-Bt cornfields. In my study, corn type did not seem to affect the percentage of eggs parasitized by Trichogramma, the percentage of larvae parasitized by M grandii, or the percentages of European corn borers infected by the entomopathogens N. pyrausta and B. bassiana. However, densities of natural enemies were significantly reduced in Bt corn compared with non-Bt corn. If large acreages are devoted to the production of Bt corn, the overall impact on specific natural enemies of European corn borer could be significant.
Issue Date:1999
Type:Text
Language:English
Description:98 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1999.
URI:http://hdl.handle.net/2142/87686
Other Identifier(s):(MiAaPQ)AAI9953168
Date Available in IDEALS:2015-09-28
Date Deposited:1999


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