Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
Reynolds, Daniel B.
Committee Member
Dodds, Darrin M.
Committee Member
Mills, J. Anthony
Committee Member
Bond, Jason A.
Committee Member
Jenkins, Johnie
Date of Degree
5-6-2017
Original embargo terms
MSU Only Indefinitely
Document Type
Graduate Thesis - Campus Access Only
Major
Plant and Soil Sciences
Degree Name
Master of Science
College
College of Agriculture and Life Sciences
Department
Department of Plant and Soil Sciences
Abstract
Seed companies have developed novel weed control technologies to combat herbicide-resistant (HR) weeds based on the use of new genetically-modified (GM) crop cultivars and auxin herbicide formulations. These herbicides can variably affect the growth and yield of susceptible cotton even at low concentrations depending on growth stage at exposure. As such, research was conducted in each of two locations in Mississippi in 2014, 2015, and 2016 to determine the cotton growth stage most susceptible to injury and yield effects from simulated misapplications of sub-lethal 2,4-D or dicamba concentrations. Results indicate that generally a decrease in yield partitioned on lower nodes and inner positions was accompanied by a compensatory increase in yield partitioned on vegetative branches and aborted terminals. However, the magnitude of these yield effects differed based on growth stage at exposure and based on which herbicide was used.
URI
https://hdl.handle.net/11668/17816
Recommended Citation
Buol, John Tyler, "The Effect of Cotton Growth Stage on Injury and Yield Effects When Exposed to Sub-Lethal Concentrations of the Auxinic Herbicides 2,4-D and Dicamba" (2017). Theses and Dissertations. 4336.
https://scholarsjunction.msstate.edu/td/4336
Comments
dicamba||2||4-D||auxin||cohort||exposure timing||growth stage||maturity||sub-lethal||tank contamination||yield partitioning