Theses and Dissertations

Issuing Body

Mississippi State University


Catchot, Angus L., Jr.

Committee Member

Gore, Jeffrey

Committee Member

Cook, Donald R.

Other Advisors or Committee Members

Crow, Whitney D. advisor

Date of Degree


Document Type

Graduate Thesis - Open Access



Degree Name

Master of Science (M.S.)


College of Agriculture and Life Sciences


College of Agriculture and Life Sciences


The tarnished plant bug, Lygus lineolaris (Palisot de Beauvois), is considered the most economically important pest of midsouth cotton. This study was designed to understand the impact of tarnished plant bug populations in the later weeks of flowering cotton and residual effects of novaluron with subsequent applications. Experiments evaluated dynamic threshold approaches in the later flowering period of midsouth cotton, the impacts of novaluron plus subsequent applications at the 3rd week of square, as well as residual properties in a laboratory experiment. Results suggest that a dynamic late season approach can reduce the amount of insecticide applications targeting tarnished plant bug with no penalty to yield. Populations were observed at lowest densities where applications of novaluron were tank mixed with an adulticide (acephate) at the 3rd week of square. Results of this experiment will be important in refining seasonal management recommendations for tarnished plant bug in midsouth cotton production systems.