TY - JOUR
T1 - Enlist™ Weed Control Systems for Palmer Amaranth (Amaranthus palmeri) Management in Texas High Plains Cotton
AU - Manuchehri, Misha R.
AU - Dotray, Peter A.
AU - Keeling, J. Wayne
N1 - Publisher Copyright:
© Weed Science Society of America, 2017.
PY - 2017/12
Y1 - 2017/12
N2 - Weed management systems were established near Lubbock, TX in 2013, 2014, and 2015 to assess the effectiveness of premixed 2,4-D choline + glyphosate alone and in combination with glufosinate and soil-residual herbicides for Palmer amaranth control. Systems consisted of trifluralin applied preplant incorporated followed by an early POST application followed by a mid-POST application. Palmer amaranth control 21 days after the early POST application ranged from 75 to 90% for all treatments that included 2,4-D choline + glyphosate alone or in a tank-mixture in 2013. Twentyeight days after the mid-POST application, Palmer amaranth was controlled 86 to 99% for all herbicide systems with the exception of systems that included a mid-POST application of glufosinate alone. Combined across 2014 and 2015, Palmer amaranth control 21 days after the early POST application ranged from 96 to 98% for all systems that included 2,4-D choline + glyphosate, 2,4-D choline alone, or 2,4-D choline in a tank-mixture. Combined across 2014 and 2015, Palmer amaranth control 28 days after the mid-POST application ranged from 95 to 100% with the exception of the following: Trifluralin preplant incorporated followed by glufosinate with or without acetochlor applied early POST followed by glufosinate mid-POST and trifluralin preplant incorporated followed by glyphosate early POST followed by glyphosate mid-POST. Overall, numerous effective systems were identified; however, systems containing 2,4-D choline + glyphosate or 2,4-D choline early POST and/or mid-POST were among the most effective. Glyphosate or glufosinate only systems or systems that relied on glufosinate alone at the mid-POST timing were inconsistent and often performed poorly. Nomenclature: 2,4-D choline; glyphosate; glufosinate; Palmer amaranth, Amaranthus palmeri S. Wats.; cotton, Gossypium hirsutum L.
AB - Weed management systems were established near Lubbock, TX in 2013, 2014, and 2015 to assess the effectiveness of premixed 2,4-D choline + glyphosate alone and in combination with glufosinate and soil-residual herbicides for Palmer amaranth control. Systems consisted of trifluralin applied preplant incorporated followed by an early POST application followed by a mid-POST application. Palmer amaranth control 21 days after the early POST application ranged from 75 to 90% for all treatments that included 2,4-D choline + glyphosate alone or in a tank-mixture in 2013. Twentyeight days after the mid-POST application, Palmer amaranth was controlled 86 to 99% for all herbicide systems with the exception of systems that included a mid-POST application of glufosinate alone. Combined across 2014 and 2015, Palmer amaranth control 21 days after the early POST application ranged from 96 to 98% for all systems that included 2,4-D choline + glyphosate, 2,4-D choline alone, or 2,4-D choline in a tank-mixture. Combined across 2014 and 2015, Palmer amaranth control 28 days after the mid-POST application ranged from 95 to 100% with the exception of the following: Trifluralin preplant incorporated followed by glufosinate with or without acetochlor applied early POST followed by glufosinate mid-POST and trifluralin preplant incorporated followed by glyphosate early POST followed by glyphosate mid-POST. Overall, numerous effective systems were identified; however, systems containing 2,4-D choline + glyphosate or 2,4-D choline early POST and/or mid-POST were among the most effective. Glyphosate or glufosinate only systems or systems that relied on glufosinate alone at the mid-POST timing were inconsistent and often performed poorly. Nomenclature: 2,4-D choline; glyphosate; glufosinate; Palmer amaranth, Amaranthus palmeri S. Wats.; cotton, Gossypium hirsutum L.
KW - Enlist Duo
KW - Enlist cotton
KW - glyphosate resistance
KW - tank mixtures
UR - http://www.scopus.com/inward/record.url?scp=85038219664&partnerID=8YFLogxK
U2 - 10.1017/wet.2017.55
DO - 10.1017/wet.2017.55
M3 - Article
AN - SCOPUS:85038219664
SN - 0890-037X
VL - 31
SP - 793
EP - 798
JO - Weed Technology
JF - Weed Technology
IS - 6
ER -