Abstract
Walsh, K. D., Soltani, N., Brown, L. R. and Sikkema, P. H. 2014. Weed control with postemergence glyphosate tank mixes in glyphosate-resistant soybean. Can. J. Plant Sci. 94: 1239–1244. Six field trials were conducted over a 3-yr period (2011, 2012 and 2013) in Ontario, Canada, to evaluate various postemergence (POST) glyphosate tank mixes for weed management in glyphosate-resistant (GR) soybean. Herbicide treatments included glyphosate applied alone or mixed with acifluorfen, fomesafen, bentazon and thifensulfuron-methyl. Glyphosate tank mixtures with acifluorfen, fomesafen, bentazon and thifensulfuron-methyl caused GR soybean injury of up to 21, 11, 4 and 14% at 7 d after treatment (DAT), which was reduced to 5, 0, 0 and 2% by 28 DAT, respectively. Velvetleaf, green pigweed, common ragweed and common lambsquarters control ranged from 55 to 95, 93 to 100, 70 to 92 and 81 to 98% at 28 DAT respectively. Relative to glyphosate alone, tank mixtures with thifensulfuron-methyl provided equivalent to increased weed control, while acifluorfen, fomesafen and bentazon provided equivalent to reduced weed control. All herbicide tank mixtures resulted in higher yields (3.8–4.0 t ha −1 ) than the untreated check (2.7 t ha −1 ), and were generally equivalent to glyphosate alone (4.1 t ha −1 ). Results from this study indicate that the glyphosate tank mixtures evaluated did not provide a benefit over glyphosate alone.
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Claims 14
Claim · model-written summary
Acifluorfen mix caused up to 21% soybean injury at 7 DAT, falling to 5% by 28 DAT.
- Taxon
- soybean
Glycine maxe0 - Treatment
- acifluorfene0
- Outcome
- GR soybean injurye0
- Direction
- causede0
- Value
- 21e0
- Qualifier
- 5, 0, 0 and 2% by 28 DATe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate tank mixtures with acifluorfen, fomesafen, bentazon and thifensulfuron-methyl caused GR soybean injury of up to 21, 11, 4 and 14% at 7 d after treatment (DAT), which was reduced to 5, 0, 0 and 2% by 28 DAT, respectively.”
Claim · model-written summary
Fomesafen mix caused up to 11% soybean injury at 7 DAT, falling to zero by 28 DAT.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate tank mixtures with acifluorfen, fomesafen, bentazon and thifensulfuron-methyl caused GR soybean injury of up to 21, 11, 4 and 14% at 7 d after treatment (DAT), which was reduced to 5, 0, 0 and 2% by 28 DAT, respectively.”
Claim · model-written summary
Bentazon mix caused up to 4% soybean injury at 7 DAT, falling to zero by 28 DAT.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate tank mixtures with acifluorfen, fomesafen, bentazon and thifensulfuron-methyl caused GR soybean injury of up to 21, 11, 4 and 14% at 7 d after treatment (DAT), which was reduced to 5, 0, 0 and 2% by 28 DAT, respectively.”
Claim · model-written summary
Thifensulfuron-methyl mix caused up to 14% soybean injury at 7 DAT, falling to 2% by 28 DAT.
- Taxon
- soybeanGlycine maxe0
- Treatment
- thifensulfuron-methyle0
- Outcome
- GR soybean injurye0
- Direction
- causede0
- Value
- 14%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate tank mixtures with acifluorfen, fomesafen, bentazon and thifensulfuron-methyl caused GR soybean injury of up to 21, 11, 4 and 14% at 7 d after treatment (DAT), which was reduced to 5, 0, 0 and 2% by 28 DAT, respectively.”
Claim · model-written summary
Velvetleaf control ranged 55 to 95% at 28 DAT.
- Taxon
- soybeanGlycine maxt0
- Interactor
- Velvetleaf
Abutilon theophrastie0weed - Outcome
- control ranged from 55 to 95e0
- Value
- 55 to 95e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Velvetleaf, green pigweed, common ragweed and common lambsquarters control ranged from 55 to 95, 93 to 100, 70 to 92 and 81 to 98% at 28 DAT respectively.”
t0“soybean”
Claim · model-written summary
Green pigweed control ranged 93 to 100% at 28 DAT.
- Taxon
- soybeanGlycine maxt0
- Interactor
- green pigweede0weed
- Outcome
- green pigweede0
- Value
- 93 to 100e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Velvetleaf, green pigweed, common ragweed and common lambsquarters control ranged from 55 to 95, 93 to 100, 70 to 92 and 81 to 98% at 28 DAT respectively.”
t0“soybean”
Claim · model-written summary
Common ragweed control ranged 70 to 92% at 28 DAT.
- Taxon
- soybeanGlycine maxt0
- Interactor
- common ragweed
Ambrosia artemisiifoliae0weed - Outcome
- common ragweede0
- Value
- 70 to 92e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Velvetleaf, green pigweed, common ragweed and common lambsquarters control ranged from 55 to 95, 93 to 100, 70 to 92 and 81 to 98% at 28 DAT respectively.”
t0“soybean”
Claim · model-written summary
Common lambsquarters control ranged 81 to 98% at 28 DAT.
- Taxon
- soybeanGlycine maxt0
- Interactor
- common lambsquarters
Chenopodium albume0weed - Outcome
- common lambsquarterse0
- Value
- 81 to 98%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Velvetleaf, green pigweed, common ragweed and common lambsquarters control ranged from 55 to 95, 93 to 100, 70 to 92 and 81 to 98% at 28 DAT respectively.”
t0“soybean”
Claim · model-written summary
Thifensulfuron-methyl mix gave equivalent to increased weed control versus glyphosate alone.
- Taxon
- soybeanGlycine maxt0
- Treatment
- thifensulfuron-methyle0
- Outcome
- weed controle0
- Direction
- increasede0
- Comparator
- glyphosate alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Relative to glyphosate alone, tank mixtures with thifensulfuron-methyl provided equivalent to increased weed control, while acifluorfen, fomesafen and bentazon provided equivalent to reduced weed control.”
t0“soybean”
Claim · model-written summary
Acifluorfen mix gave equivalent to reduced weed control versus glyphosate alone.
- Taxon
- soybeanGlycine maxt0
- Treatment
- acifluorfene0
- Outcome
- weed controle0
- Direction
- reducede0
- Comparator
- glyphosate alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Relative to glyphosate alone, tank mixtures with thifensulfuron-methyl provided equivalent to increased weed control, while acifluorfen, fomesafen and bentazon provided equivalent to reduced weed control.”
t0“soybean”
Claim · model-written summary
Fomesafen mix gave equivalent to reduced weed control versus glyphosate alone.
- Taxon
- soybeanGlycine maxt0
- Treatment
- fomesafene0
- Outcome
- weed controle0
- Direction
- reducede0
- Comparator
- glyphosate alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Relative to glyphosate alone, tank mixtures with thifensulfuron-methyl provided equivalent to increased weed control, while acifluorfen, fomesafen and bentazon provided equivalent to reduced weed control.”
t0“soybean”
Claim · model-written summary
Bentazon mix gave equivalent to reduced weed control versus glyphosate alone.
- Taxon
- soybeanGlycine maxt0
- Treatment
- bentazone0
- Outcome
- weed controle0
- Direction
- reducede0
- Comparator
- glyphosate alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Relative to glyphosate alone, tank mixtures with thifensulfuron-methyl provided equivalent to increased weed control, while acifluorfen, fomesafen and bentazon provided equivalent to reduced weed control.”
t0“soybean”
Claim · model-written summary
Tank mixtures gave higher soybean yields than untreated check but were generally equivalent to glyphosate alone.
- Taxon
- soybeanGlycine maxt0
- Treatment
- All herbicide tank mixturese0
- Outcome
- yieldse0
- Direction
- highere0
- Value
- 3.8–4.0 t ha −1e0
- Qualifier
- generally equivalent to glyphosate alonee0
- Comparator
- untreated checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All herbicide tank mixtures resulted in higher yields (3.8–4.0 t ha −1 ) than the untreated check (2.7 t ha −1 ), and were generally equivalent to glyphosate alone (4.1 t ha −1 ).”
t0“soybean”
Claim · model-written summary
The authors concluded that the evaluated mixes offered no benefit over glyphosate alone.
- Taxon
- soybeanGlycine maxt0
- Outcome
- did not provide a benefit over glyphosate alonee0
- Comparator
- glyphosate alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“glyphosate tank mixtures evaluated did not provide a benefit over glyphosate alone.”
t0“soybean”
The same questions in other papers
acifluorfen · weed · Glycine max (soybean)Positive and negative results
1 paper in the same direction as this paper · 8 in the opposite direction
- positive
- positive
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See all 10 papers →bentazone · crop injury · Glycine max (soybean)Positive and negative results
7 papers in the same direction as this paper · 3 in the opposite direction
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See all 11 papers →fomesafen · crop injury · Glycine max (soybean)Positive and negative results
8 papers in the same direction as this paper · 2 in the opposite direction
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2 papers in the same direction as this paper · 12 in the opposite direction
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- positive
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See all 15 papers →fomesafen · weed · Glycine max (soybean)Positive and negative results
3 papers in the same direction as this paper · 20 in the opposite direction
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See all 24 papers →thifensulfuron-methyl · crop injury · Glycine max (soybean)Results agree
2 papers in the same direction as this paper
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acifluorfen · crop injury · Glycine max (soybean)Results agree
12 papers in the same direction as this paper
- negative
- negative
- negative
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See all 13 papers →herbicide · yield · Glycine max (soybean)Positive and negative results
321 papers in the same direction as this paper · 112 in the opposite direction · 26 reporting no difference from an alternative
- no effect
- positive
- no effect
456 papers more in this group
See all 460 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.