Theses and Dissertations

Issuing Body

Mississippi State University

Advisor

Catchot, Angus

Committee Member

Daves, Chris

Committee Member

Dodds, Darrin

Committee Member

Cook, Don

Committee Member

Gore, Jeff

Date of Degree

8-10-2018

Document Type

Graduate Thesis - Open Access

Major

Agricultural Life Sciences (Entomology)

Degree Name

Master of Science

College

College of Agriculture and Life Sciences

Department

Department of Biochemistry, Molecular Biology, Entomology and Plant Pathology

Abstract

Field experiments were conducted in Stoneville, MS and Sidon, MS in 2016 and 2017 to evaluate a new transgenic cotton variety (MON 88702) (Cry51Aa2.834_16) and its effects on tarnished plant bug, Lygus lineolaris (Palisot de Beauvois), populations, frequency of insecticide applications, and yield. Experiments were designed to compare the interactions between the Bt traited plots and non-traited plots and the insecticide spray treatments, which consisted of different application thresholds as well as treatments sprayed only during the early season and only during the late season. MON 88702 provided a significant reduction in later instar tarnished plant bug nymphs, dirty squares, and insecticide applications, especially during the late season. MON 88702 also provided a significant increase in yield compared to non-traited plots. By implementing this transgenic approach, the number of insecticide applications necessary to effectively manage tarnished plant bug will be reduced compared to non-transgenic isolines, while also protecting yield.

URI

https://hdl.handle.net/11668/21004

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