Dissertation/Thesis Abstract

Impact of corn earworm on field corn yield and grain quality
by Bibb, Jenny Lee, M.S., Mississippi State University, 2015, 96; 1604199
Abstract (Summary)

Field corn, Zea mays L., has been introduced to the market with pyramided Bacillus thuringiensis (Bt) corn technologies. These technologies reduce kernel damage from ear feeding caterpillar pests, including corn earworm, Helicoverpa zea (Boddie). The first generation Bt traits in field corn demonstrated limited activity on corn earworm feeding on grain in ears. The pyramided corn technologies have greater cumulative protein concentrations and improved expression throughout the plant, so these corn traits should provide an effective management tool against these pests. In addition, reduced kernel injury may also have a direct effect on physical grain quality. The results for this trial showed no relationship between number of damaged kernels and yield was observed for corn hybrid expressing the Herculex®, YieldGard®, or Genuity VT Triple Pro® technologies. A significant relationship between both damaged kernels and test weight and damaged kernels and aflatoxin concentrations was observed in two technologies.

Indexing (document details)
Advisor: Catchot, Angus L., Jr., Cook, Donald R.
Commitee: Allen, Thomas W., Jr., Leonard, Billy R., Musser, Fred R., Stewart, Scott D.
School: Mississippi State University
Department: Agriculture and Life Sciences
School Location: United States -- Mississippi
Source: MAI 55/02M(E), Masters Abstracts International
Source Type: DISSERTATION
Subjects: Entomology, Agriculture
Keywords: Bacillus thuringiensis corn, Corn earworm, Grain quality, Helicoverpa zea, Yield, Zea mays
Publication Number: 1604199
ISBN: 9781339263908
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