Advisor

Musser, R. Fred

Committee Member

Catchot, L. Angus

Committee Member

Collison, H. Clarence

Committee Member

Williams, Paul W.

Date of Degree

5-1-2009

Document Type

Graduate Thesis - Open Access

Degree Name

Master of Science

College

College of Agriculture and Life Sciences

Department

Department of Entomology and Plant Pathology

Abstract

Studies were conducted to determine if corn stalk strength had an effect on southwestern corn borer (Diatraea grandiosella Dyar) survival during different growth stages. In 2006 southwestern corn borer larvae were placed on corn during the tassel stage near the ear and base of the plant. Survival was higher near the ear than near the base of the plant. In 2007, five varieties of corn were planted at three locations in Mississippi. Plants were infested with five 3rd instar larvae at the ear zone during tassel, dough and dent development stages. After five days stalk strength and borer survival were measured. Survival decreased as the corn progressed from tassel to dent stage. Survival varied among corn varieties. The relationship between stalk strength and borer survival was not consistent, indicating that there are likely factors more directly limiting borer survival than physical stalk strength.

URI

https://hdl.handle.net/11668/15235

Comments

Diatraea grandiosella||Zea mays||stalk strength||penetration resistance

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