Abstract
Abstract Tiafenacil is a recently developed protoporphyrinogen IX oxidase (PPO)-inhibiting herbicide from the pyrimidinedione chemical class that is proposed for use as a preplant (PP) burndown in soybean. Glyphosate-resistant (GR) horseweed is a troublesome weed often found in no-till systems that can dramatically reduce soybean yield; control in soybean has been variable. Five field experiments were conducted over 2019 and 2020 in commercial soybean fields with GR horseweed to determine the biologically effective dose (BED) of tiafenacil and tiafenacil + metribuzin and to compare their efficacy to currently accepted industry standard herbicide treatments in identity-preserved (IP, non-GMO), GR, and glyphosate/dicamba-resistant (GDR) soybean systems. There was no soybean injury with treatments evaluated. The calculated doses of tiafenacil for 50%, 80%, and 95% control of GR horseweed control were 21, 147, and >200 g ai ha −1 , respectively, at 8 wk after application (WAA). Lower doses were calculated with the addition of metribuzin (400 g ai ha −1 ) to tiafenacil for 50% and 80% control, with no dose of tiafenacil + metribuzin providing 95% control. Tiafenacil + metribuzin at 25 + 400 and 50 + 400 g ai ha −1 controlled GR horseweed 88% and 93%, respectively, which was similar to the industry standards of saflufenacil + metribuzin (25 + 400 g ai ha −1 ) and glyphosate/dicamba + saflufenacil (1,200/600 + 25 g ai ha −1 ) that provided 98% and 100% control, respectively, at 8 WAA. This study presents the potential utility of tiafenacil + metribuzin as a GR horseweed management strategy in soybean.
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Claims 9
Claim · model-written summary
The evaluated treatments caused no soybean injury.
- Taxon
- soybean
Glycine maxe0 - Treatment
- treatments evaluatede0
- Outcome
- soybean injurye0
- Direction
- noe0
Not reportedInteractorComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no soybean injury with treatments evaluated.”
Claim · model-written summary
Tiafenacil doses for 50%, 80%, and 95% GR horseweed control were 21, 147, and >200 g ai ha −1 at 8 WAA, respectively.
- Taxon
- soybeanGlycine maxt0
- Treatment
- tiafenacile0
- Interactor
- GR horseweede0weed
- Outcome
- control of GR horseweede0
- Value
- 21, 147, and >200 g ai ha −1e0
- Qualifier
- 50%, 80%, and 95%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The calculated doses of tiafenacil for 50%, 80%, and 95% control of GR horseweed control were 21, 147, and >200 g ai ha −1 , respectively, at 8 wk after application (WAA)”
t0“soybean”
Claim · model-written summary
Adding metribuzin lowered the tiafenacil doses calculated for 50% and 80% horseweed control.
- Taxon
- soybeanGlycine maxt0
- Treatment
- addition of metribuzin (400 g ai ha −1 ) to tiafenacile0
- Outcome
- controle0
- Direction
- Lowere0
- Qualifier
- 50% and 80%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lower doses were calculated with the addition of metribuzin (400 g ai ha −1 ) to tiafenacil for 50% and 80% control”
t0“soybean”
Claim · model-written summary
No tiafenacil plus metribuzin dose provided 95% horseweed control.
- Taxon
- soybeanGlycine maxt0
- Treatment
- tiafenacil + metribuzine0
- Interactor
- glyphosate-resistant horseweedt0
- Outcome
- 95% controle0
- Direction
- noe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with no dose of tiafenacil + metribuzin providing 95% control”
t0“glyphosate-resistant horseweed control in soybean”
Claim · model-written summary
Tiafenacil plus metribuzin at 25 + 400 g ai ha −1 controlled GR horseweed by 88%.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Tiafenacil + metribuzin at 25 + 400e0
- Interactor
- GR horseweede0weed
- Outcome
- controlled GR horseweede0
- Direction
- controllede0
- Value
- 88%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tiafenacil + metribuzin at 25 + 400 and 50 + 400 g ai ha −1 controlled GR horseweed 88% and 93%, respectively”
t0“soybean”
Claim · model-written summary
Tiafenacil plus metribuzin at 50 + 400 g ai ha −1 controlled GR horseweed by 93%.
- Taxon
- soybeanGlycine maxt0
- Treatment
- 50 + 400 g ai ha −1e0
- Interactor
- GR horseweede0weed
- Outcome
- controlled GR horseweede0
- Direction
- controllede0
- Value
- 93%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tiafenacil + metribuzin at 25 + 400 and 50 + 400 g ai ha −1 controlled GR horseweed 88% and 93%, respectively”
t0“soybean”
Claim · model-written summary
Saflufenacil plus metribuzin controlled horseweed by 98%.
- Taxon
- soybeanGlycine maxt0
- Treatment
- saflufenacil + metribuzin (25 + 400 g ai ha −1 )e0
- Outcome
- controle0
- Direction
- providede0
- Value
- 98%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“saflufenacil + metribuzin (25 + 400 g ai ha −1 ) and glyphosate/dicamba + saflufenacil (1,200/600 + 25 g ai ha −1 ) that provided 98% and 100% control, respectively, at 8 WAA”
t0“soybean”
Claim · model-written summary
Glyphosate/dicamba plus saflufenacil controlled horseweed by 100%.
- Taxon
- soybeanGlycine maxt0
- Treatment
- glyphosate/dicamba + saflufenacil (1,200/600 + 25 g ai ha −1 )e0
- Outcome
- controle0
- Direction
- providede0
- Value
- 100%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“glyphosate/dicamba + saflufenacil (1,200/600 + 25 g ai ha −1 ) that provided 98% and 100% control, respectively, at 8 WAA”
t0“soybean”
Claim · model-written summary
The authors propose tiafenacil plus metribuzin as a horseweed management strategy in soybean.
- Taxon
- soybeanGlycine maxe0
- Treatment
- tiafenacil + metribuzine0
- Interactor
- GR horseweede0weed
- Outcome
- GR horseweed management strategye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study presents the potential utility of tiafenacil + metribuzin as a GR horseweed management strategy in soybean”
The same questions in other papers
dicamba · control · Glycine max (soybean)Positive and negative results
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- positive
- positive
- positive
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See all 31 papers →metribuzin · control · Glycine max (soybean)Positive and negative results
42 papers in the same direction as this paper · 4 in the opposite direction · 1 reporting no difference from an alternative
- positive
- negative
- no effect
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See all 48 papers →glyphosate · control · Glycine max (soybean)Positive and negative results
69 papers in the same direction as this paper · 5 in the opposite direction · 1 reporting no difference from an alternative
- positive
- positive
- negative
72 papers more in this group
See all 76 papers →saflufenacil · control · Glycine max (soybean)Results agree
13 papers in the same direction as this paper
- positive
- positive
- positive
10 papers more in this group
See all 14 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.