Date of Award
12-1-2016
Degree Name
Master of Science
Department
Plant and Soil Science
First Advisor
Walters, Stuart
Abstract
Management of volunteer horseradish is a challenge when grown in rotation with other crops, such as corn and soybean. Although, volunteer horseradish does not generally cause yield loss, these plants serve as hosts for various soil-borne pathogens that inflict damage to subsequent horseradish crops. Field studies were conducted to evaluate the effect of glyphosate and dicamba on volunteer horseradish growth and development. The application of glyphosate plus dicamba provided the greatest control and biomass reduction, while glyphosate alone provided the greatest reduction in viability. In addition to volunteer horseradish, Palmer amaranth (Amaranthus palmeri) is becoming difficult to control in southwestern Illinois. Its ability to withstand drought, produce high numbers of seed, and rapid growth make it often times difficult to control. Field studies were conducted to evaluate the effect of glyphosate and dicamba on the growth and development on Palmer amaranth. In both 2014 and 2015, sulfentrazone (preemergence) followed by glyphosate plus dicamba (postemergence) provided the greatest control of Palmer amaranth, while allowing horseradish to be planted the following spring.
Access
This thesis is only available for download to the SIUC community. Current SIUC affiliates may also access this paper off campus by searching Dissertations & Theses @ Southern Illinois University Carbondale from ProQuest. Others should contact the interlibrary loan department of your local library or contact ProQuest's Dissertation Express service.