ACCase herbicide resistance in bermudagrass
Grimshaw, Austin Lee
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Bermudagrass (Cynodon dactylon (L.) Pers.) is a widely used turfgrass in home lawns, golf courses, and athletic fields. The turf industry faces challenges regarding the issues of environmental impact and increasing expense of turf management. Fertilizer and herbicide application has been linked with non-point pollution of fresh water systems. Creating new turf cultivars with potential to reduce environmental impacts is critical for continued success of the industry. Herbicide resistant bermudagrass cultivars are a way to modernize the turf industry, making management more cost efficient for operators. Studies were performed to identify and attempt to create ACCase herbicide resistant bermudagrass cultivars. A possible herbicide tolerant genotype (93-175) exhibited less injury to ACCase herbicide applications. Also, a lysimeter study was completed to analyze fertilizer leaching characteristics of several fertilizers and determined an experimental fertilizer (E 15-0-0) had a greater potential to leach nitrogen than two other commonly used fertilizers.