Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
Ferguson, Jason Connor
Committee Member
Brown-Johnson, Ashli
Committee Member
Reynolds, Daniel B.
Committee Member
Tseng, Te-Ming (Paul)
Date of Degree
12-13-2019
Original embargo terms
Worldwide
Document Type
Graduate Thesis - Open Access
Major
Plant and Soil Sciences (Weed Science)
Degree Name
Master of Science
College
College of Agriculture and Life Sciences
Department
Department of Plant and Soil Sciences
Abstract
Field studies were conducted to test three application methods for applying antagonistic herbicide combinations: 1) tank mix (TMX), 2) mix-in-line (MIL), and 3) separate boom (SPB). Sethoxydim applied with bentazon, glyphosate applied with dicamba or 2,4-D, and clethodim applied with dicamba or 2,4-D had higher efficacy when applied using the SPB method. Antagonism of all the herbicide combinations above was observed when applied using the TMX and MIL methods. In some cases, antagonism was avoided when using the SPB method. Three application methods tested in greenhouse studies were 1) TMX, 2) synthetic auxin applied first (AAF), and 3) synthetic auxin applied second (AAS). The AAS application method resulted in higher weed control than the TMX and AAF methods. Analysis done through liquid chromatography mass spectrometry supported the greenhouse results with higher rates of glyphosate detected with the AAS method.
URI
https://hdl.handle.net/11668/16411
Recommended Citation
Merritt, Luke H., "Reduced herbicide antagonism through novel spray application techniques" (2019). Theses and Dissertations. 3746.
https://scholarsjunction.msstate.edu/td/3746
Comments
2,4-D||Dicamba||Herbicide antagonism||Clethodim||Glyphosate||Sethoxydim||Bentazon||Tank mix||Sequential applications||Mix-in-line||Separate boom