Mississippi State University
Reynolds, B. Daniel
Shaw, R. David
Date of Degree
Graduate Thesis - Open Access
Department of Plant and Soil Sciences
Due to reduced reproductive tolerance, current Roundup Ready cotton only allows for over-the-top glyphosate applications through the fourth leaf stage of development. To combat this issue, Roundup Ready Flex cotton was introduced in 2006, offering both vegetative and reproductive tissue tolerance to glyphosate. Roundup Ready Flex cotton offers a wider window of application timing, without risk of plant injury. The primary objectives of this research were to test Roundup Ready Flex cotton against current Roundup Ready cotton technology at various application rates and timings and to test various elite varieties of Roundup Ready Flex cotton for glyphosate tolerance. Roundup Ready Flex cotton tolerance was unaffected by application rates or timings. Roundup Ready Flex cotton varieties were unaffected by glyphosate applications. Roundup Ready Flex cotton exhibits both vegetative and reproductive tolerance to glyphosate and is an effective alternative to current Roundup Ready cotton cropping systems.
Huff, Jonathan Andrew, "Glyphosate Tolerance in Roundup Ready Flex Cotton (Gossypium hirsutum)" (2007). Theses and Dissertations. 2426.