Theses and Dissertations

Issuing Body

Mississippi State University

Advisor

Catchot, Angus L., Jr.

Committee Member

Gore, Jeffrey

Committee Member

Cook, Donald R.

Committee Member

Barton, Brandon

Committee Member

Brown, Richard L.

Other Advisors or Committee Members

Irby, Jon Trenton

Date of Degree

1-1-2018

Document Type

Dissertation - Open Access

Degree Name

Doctor of Philosophy

College

College of Agriculture and Life Sciences

Department

Department of Biochemistry, Molecular Biology, Entomology and Plant Pathology

Abstract

An increasing cultural practice in soybean, Glycine max (L.), production is the use of winter annual cover crops before planting. Species of grasses, legumes, and forbs are planted for many agronomic purposes during the fall months. In the spring, cover crops are killed and soybean planted into the residue. When the termination of the cover crops is delayed for longer lasting benefits, insect pest issues can arise. The movement of insect pests from cover crops to subsequent cash crops happens through a connection known as the “Green Bridge”. Pests found in cover crops such as the pea leaf weevil, Sitona lineatus L. (Coleoptera: Curculionidae), can be particularly damaging to immature soybean plants. Experiments were conducted to tests how cover crops influence insect populations in soybean. Also, various chemical control options, soybean planting populations, and the timing of cover crop termination prior to planting were tested in these cover crop-soybean systems. Lastly, an experiment was conducted to measure how various species of cover crops and neonicotinoid seed treatments affect arthropod diversity in soybean fields.

URI

https://hdl.handle.net/11668/18661

Comments

soybean||entomology||cover crops

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