Abstract
Tropical spiderwort has recently become the most troublesome weed in Georgia cotton. Most of Georgia's cotton is glyphosate resistant (GR), and glyphosate is only marginally effective on tropical spiderwort. An experiment was conducted at four locations to determine tropical spiderwort control in GR cotton by 27 herbicide systems. Treatments consisted of three early-postemergence over-the-top (POT) herbicide options and nine late–postemergence-directed (LPD) options arranged factorially. Glyphosate POT controlled tropical spiderwort only 53% 21 d after treatment (DAT). Glyphosate plus pyrithiobac or S-metolachlor controlled tropical spiderwort 60 and 80%, respectively. Pyrithiobac improved control of emerged spiderwort, whereas S-metolachlor provided residual control. Pooled over POT treatments, glyphosate LPD controlled tropical spiderwort 70% 21 DAT. Dimethipin mixed with glyphosate did not improve control. Carfentrazone, diuron, or flumioxazin mixed with glyphosate LPD improved control 9 to 15%. MSMA and MSMA plus flumioxazin were 8 and 19% more effective than glyphosate LPD. At time of cotton harvest, systems without residual herbicides at LPD controlled tropical spiderwort 42 to 45% compared with 64 to 76% with LPD treatments that included diuron or flumioxazin.
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Claims 14
Claim · model-written summary
Glyphosate POT controlled tropical spiderwort 53% at 21 DAT.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- Glyphosate POTe0
- Interactor
- tropical spiderworte1weed
- Outcome
- tropical spiderworte0
- Direction
- controllede0
- Value
- 53%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate POT controlled tropical spiderwort only 53% 21 d after treatment (DAT)”
e1“Glyphosate POT controlled tropical spiderwort only 53% 21 d after treatment (DAT)”
t0“Cotton”
Claim · model-written summary
Glyphosate plus pyrithiobac controlled tropical spiderwort 60%.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Glyphosate plus pyrithiobace0
- Interactor
- tropical spiderworte1weed
- Outcome
- tropical spiderworte0
- Direction
- controllede0
- Value
- 60e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate plus pyrithiobac or S-metolachlor controlled tropical spiderwort 60 and 80%, respectively”
e1“Glyphosate POT controlled tropical spiderwort only 53% 21 d after treatment (DAT)”
t0“Cotton”
Claim · model-written summary
Glyphosate plus S-metolachlor controlled tropical spiderwort 80%.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- S-metolachlore0
- Interactor
- tropical spiderworte1weed
- Outcome
- tropical spiderworte0
- Direction
- controllede0
- Value
- 80%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate plus pyrithiobac or S-metolachlor controlled tropical spiderwort 60 and 80%, respectively”
e1“Glyphosate POT controlled tropical spiderwort only 53% 21 d after treatment (DAT)”
t0“Cotton”
Claim · model-written summary
Pyrithiobac improved control of emerged spiderwort.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Pyrithiobace0
- Interactor
- tropical spiderworte1weed
- Outcome
- control of emerged spiderworte0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pyrithiobac improved control of emerged spiderwort, whereas S-metolachlor provided residual control”
e1“Glyphosate POT controlled tropical spiderwort only 53% 21 d after treatment (DAT)”
t0“Cotton”
Claim · model-written summary
S-metolachlor provided residual control.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- S-metolachlore0
- Interactor
- tropical spiderworte1weed
- Outcome
- residual controle0
- Direction
- providede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pyrithiobac improved control of emerged spiderwort, whereas S-metolachlor provided residual control”
e1“Glyphosate POT controlled tropical spiderwort only 53% 21 d after treatment (DAT)”
t0“Cotton”
Claim · model-written summary
Glyphosate LPD controlled tropical spiderwort 70% at 21 DAT.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- glyphosate LPDe0
- Interactor
- tropical spiderworte1weed
- Outcome
- tropical spiderworte0
- Direction
- controllede0
- Value
- 70%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pooled over POT treatments, glyphosate LPD controlled tropical spiderwort 70% 21 DAT”
e1“Glyphosate POT controlled tropical spiderwort only 53% 21 d after treatment (DAT)”
t0“Cotton”
Claim · model-written summary
Dimethipin mixed with glyphosate did not improve weed control.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Dimethipin mixed with glyphosatee0
- Outcome
- controle0
- Direction
- did not improvee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dimethipin mixed with glyphosate did not improve control”
t0“Cotton”
Claim · model-written summary
Carfentrazone with glyphosate LPD improved control by 9 to 15%.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Carfentrazonee0
- Interactor
- tropical spiderworte1weed
- Outcome
- controle0
- Direction
- improvede0
- Value
- 9 to 15%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Carfentrazone, diuron, or flumioxazin mixed with glyphosate LPD improved control 9 to 15%”
e1“Glyphosate POT controlled tropical spiderwort only 53% 21 d after treatment (DAT)”
t0“Cotton”
Claim · model-written summary
diuron with glyphosate LPD improved control by 9 to 15%.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- diurone0
- Interactor
- tropical spiderworte1weed
- Outcome
- controle0
- Direction
- improvede0
- Value
- 9 to 15%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Carfentrazone, diuron, or flumioxazin mixed with glyphosate LPD improved control 9 to 15%”
e1“Glyphosate POT controlled tropical spiderwort only 53% 21 d after treatment (DAT)”
t0“Cotton”
Claim · model-written summary
flumioxazin with glyphosate LPD improved control by 9 to 15%.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- flumioxazine0
- Interactor
- tropical spiderworte1weed
- Outcome
- controle0
- Direction
- improvede0
- Value
- 9 to 15%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Carfentrazone, diuron, or flumioxazin mixed with glyphosate LPD improved control 9 to 15%”
e1“Glyphosate POT controlled tropical spiderwort only 53% 21 d after treatment (DAT)”
t0“Cotton”
Claim · model-written summary
MSMA was 8% more effective than glyphosate LPD.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- MSMAe0
- Outcome
- more effectivee0
- Direction
- more effectivee0
- Value
- 8e0
- Comparator
- glyphosate LPDe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MSMA and MSMA plus flumioxazin were 8 and 19% more effective than glyphosate LPD”
t0“Cotton”
Claim · model-written summary
MSMA plus flumioxazin was 19% more effective than glyphosate LPD.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- MSMA plus flumioxazine0
- Outcome
- more effectivee0
- Direction
- more effectivee0
- Value
- 19%e0
- Comparator
- glyphosate LPDe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MSMA and MSMA plus flumioxazin were 8 and 19% more effective than glyphosate LPD”
t0“Cotton”
Claim · model-written summary
Systems without residual herbicides controlled spiderwort 42 to 45% at harvest.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- systems without residual herbicides at LPDe0
- Interactor
- tropical spiderworte1weed
- Outcome
- tropical spiderworte0
- Direction
- controllede0
- Value
- 42 to 45%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At time of cotton harvest, systems without residual herbicides at LPD controlled tropical spiderwort 42 to 45% compared with 64 to 76% with LPD treatments that included diuron or flumioxazin”
e1“Glyphosate POT controlled tropical spiderwort only 53% 21 d after treatment (DAT)”
t0“Cotton”
Claim · model-written summary
LPD treatments with diuron or flumioxazin controlled spiderwort 64 to 76% at harvest.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- LPD treatments that included diuron or flumioxazine0
- Interactor
- tropical spiderworte1weed
- Outcome
- tropical spiderworte0
- Direction
- controllede0
- Value
- 64 to 76%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At time of cotton harvest, systems without residual herbicides at LPD controlled tropical spiderwort 42 to 45% compared with 64 to 76% with LPD treatments that included diuron or flumioxazin”
e1“Glyphosate POT controlled tropical spiderwort only 53% 21 d after treatment (DAT)”
t0“Cotton”
The same questions in other papers
diuron · organism · Gossypium hirsutum (cotton)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
flumioxazin · organism · Gossypium hirsutum (cotton)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- negative
- no effect
- positive
1 paper more in this group
See all 5 papers →diuron · control · Gossypium hirsutum (cotton)Positive and negative results
4 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
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See all 6 papers →flumioxazin · control · Gossypium hirsutum (cotton)Positive and negative results
4 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
2 papers more in this group
See all 6 papers →glyphosate · organism · Gossypium hirsutum (cotton)Positive and negative results
8 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- no effect
8 papers more in this group
See all 12 papers →glyphosate · control · Gossypium hirsutum (cotton)Positive and negative results
2 papers in the same direction as this paper · 38 in the opposite direction
- positive
- positive
- positive
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See all 41 papers →carfentrazone · control · Gossypium hirsutum (cotton)Results agree
1 paper in the same direction as this paper
- positive
herbicide · organism · Gossypium hirsutum (cotton)Positive and negative results
20 papers in the same direction as this paper · 13 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- no effect
31 papers more in this group
See all 35 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.