Abstract
Enlist® cotton with tolerance to 2,4-D choline, glyphosate, and glufosinate became publicly available in 2016 to aid growers in controlling glyphosate-resistant weed species. Little data exist regarding the tolerance of Enlist cotton to herbicide tank mixtures containing glyphosate, glufosinate, 2,4-D choline, and S-metolachlor. The objective of this study was to evaluate the tolerance of Enlist cotton to herbicide tank mixtures including these herbicides. Field studies were conducted in 2016 and 2017 where cotton was sprayed with herbicide combinations containing glyphosate, glufosinate, S-metolachlor, 2,4-D choline, and a premix formulation of glyphosate and S-metolachlor. Crop injury consisted of necrosis, chlorosis, visual stunting, injury on new growth, and total injury at 7, 14, and 28 days after application (DAA). Cotton lint yield was recorded at the conclusion of each growing season. The greatest levels of necrosis and total injury at 7 DAA were observed following applications of glufosinate + S-metolachlor, alone or in combination with glyphosate or glyphosate + 2,4-D choline. The least amount of necrosis and total injury at 7 DAA was observed following applications of glyphosate, glufosinate, S-metolachlor, glyphosate + glufosinate, or glyphosate + S-metolachlor, which produced less than 13% injury. Visual injury at 14 DAA ranged from 8 to 16% across herbicides applied. At 28 DAA, no differences in visual injury were reported. Lint yield was unaffected by herbicide application. Although transient visual injury is expected, Enlist cotton withstood herbicide applications with up to four modes of action in tankmixture without suffering yield reduction.
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Claims 6
Claim · model-written summary
Glufosinate plus S-metolachlor combinations caused the greatest necrosis and total injury at 7 DAA.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- glufosinate + S-metolachlore0
- Outcome
- necrosis and total injurye0
- Direction
- greateste0
- Qualifier
- 7 DAAe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The greatest levels of necrosis and total injury at 7 DAA were observed following applications of glufosinate + S-metolachlor, alone or in combination with glyphosate or glyphosate + 2,4-D choline.”
t0“cotton”
Claim · model-written summary
The listed single and two-herbicide applications caused the least necrosis and total injury at 7 DAA, below 13%.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- glyphosatee0
- Outcome
- necrosis and total injurye0
- Direction
- leaste0
- Value
- less than 13%e0
- Qualifier
- 7 DAAe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The least amount of necrosis and total injury at 7 DAA was observed following applications of glyphosate, glufosinate, S-metolachlor, glyphosate + glufosinate, or glyphosate + S-metolachlor, which produced less than 13% injury.”
t0“cotton”
Claim · model-written summary
Visual injury ranged from 8 to 16% at 14 DAA across herbicides.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- Visual injurye0
- Value
- 8 to 16%e0
- Qualifier
- 14 DAAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Visual injury at 14 DAA ranged from 8 to 16% across herbicides applied.”
t0“cotton”
Claim · model-written summary
Visual injury did not differ among herbicides at 28 DAA.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- visual injurye0
- Direction
- no differencese0
- Qualifier
- 28 DAAe0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 28 DAA, no differences in visual injury were reported.”
t0“cotton”
Claim · model-written summary
Herbicide application did not affect lint yield.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- herbicide applicatione0
- Outcome
- Lint yielde0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lint yield was unaffected by herbicide application.”
t0“cotton”
Claim · model-written summary
Enlist cotton withstood mixtures with up to four modes of action without yield reduction.
- Taxon
- cottonGossypium hirsutume0
- Outcome
- yield reductione0
- Direction
- without sufferinge0
- Qualifier
- up to four modes of actione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Enlist cotton withstood herbicide applications with up to four modes of action in tankmixture without suffering yield reduction.”
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See all 27 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.