Abstract
A total of six experiments were conducted over a two-year period (2018, 2019) at the University of Guelph Ridgetown Campus to assess the efficacy of various herbicides applied postemergence (POST) for the control of common chickweed in winter wheat. Fluroxypyr/bromoxynil/MCPA, pyrasulfotole/bromoxynil,pyrasulfotole/bromoxynil/fluroxypyr,pyrasulfotole/bromoxynil/thiencarbazone, pyrasulfotole/bromoxynil/thiencarbazone + MCPA ester, tolpyralate and fluroxypyr/halauxifen + MCPA EHE, applied POST, controlled common chickweed only 5% - 42% at 2 weeks after treatment (WAT) and 1% - 23% at 4 WAT and resulted in common chickweed density and biomass that was similar to non-treated weedy control. Fluroxypyr/halauxifen + pyroxsulam + MCPA EHE, applied POST, provided 57% - 82% control of common chickweed and reduced density 93% and biomass 98% compared to the non-treated control. Thifensulfuron/tribenuron, thifensulfuron/tribenuron + MCPA ester, thifensulfuron/tribenuron + fluroxypyr + MCPA ester, tribenuron + thiencarbazone, and tribenuron + thiencarbazone + MCPA ester, applied POST, controlled common chickweed 98% - 100% and reduced common chickweed density 96% - 98% and common chickweed biomass 99%. Based on these results, herbicide treatments which contained tribenuron including thifensulfuron/tribenuron, thifensulfuron/tribenuron + MCPA ester, thifensulfuron/tribenuron + fluroxypyr + MCPA ester, tribenuron + thiencarbazone, and tribenuron + thiencarbazone + MCPA ester were the most efficacious for the control of common chickweed in wheat. In addition, fluroxypyr/halauxifen + pyroxsulam + MCPA EHE, applied POST, can provide adequate control of common chickweed in winter wheat.
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Claims 11
Claim · model-written summary
The first postemergence herbicide group controlled common chickweed by 5% - 42% at 2 WAT.
- Taxon
- Winter Wheat
Triticum aestivumt0 - Treatment
- Fluroxypyr/bromoxynil/MCPA, pyrasulfotole/bromoxynil,pyrasulfotole/bromoxynil/fluroxypyr,pyrasulfotole/bromoxynil/thiencarbazone, pyrasulfotole/bromoxynil/thiencarbazone + MCPA ester, tolpyralate and fluroxypyr/halauxifen + MCPA EHEe0
- Interactor
- common chickweede0weed
- Outcome
- common chickweede0
- Direction
- controllede0
- Value
- 5% - 42%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fluroxypyr/bromoxynil/MCPA, pyrasulfotole/bromoxynil,pyrasulfotole/bromoxynil/fluroxypyr,pyrasulfotole/bromoxynil/thiencarbazone, pyrasulfotole/bromoxynil/thiencarbazone + MCPA ester, tolpyralate and fluroxypyr/halauxifen + MCPA EHE, applied POST, controlled common chickweed only 5% - 42% at 2 weeks after treatment (WAT) and 1% - 23% at 4 WAT and resulted in common chickweed density and biomass that was similar to non-treated weedy control.”
t0“Winter Wheat”
Claim · model-written summary
The first postemergence herbicide group controlled common chickweed by 1% - 23% at 4 WAT.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- Fluroxypyr/bromoxynil/MCPA, pyrasulfotole/bromoxynil,pyrasulfotole/bromoxynil/fluroxypyr,pyrasulfotole/bromoxynil/thiencarbazone, pyrasulfotole/bromoxynil/thiencarbazone + MCPA ester, tolpyralate and fluroxypyr/halauxifen + MCPA EHEe0
- Interactor
- common chickweede0weed
- Outcome
- common chickweede0
- Direction
- controllede0
- Value
- 1% - 23%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fluroxypyr/bromoxynil/MCPA, pyrasulfotole/bromoxynil,pyrasulfotole/bromoxynil/fluroxypyr,pyrasulfotole/bromoxynil/thiencarbazone, pyrasulfotole/bromoxynil/thiencarbazone + MCPA ester, tolpyralate and fluroxypyr/halauxifen + MCPA EHE, applied POST, controlled common chickweed only 5% - 42% at 2 weeks after treatment (WAT) and 1% - 23% at 4 WAT and resulted in common chickweed density and biomass that was similar to non-treated weedy control.”
t0“Winter Wheat”
Claim · model-written summary
The first herbicide group left chickweed density and biomass similar to the weedy control.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- Fluroxypyr/bromoxynil/MCPA, pyrasulfotole/bromoxynil,pyrasulfotole/bromoxynil/fluroxypyr,pyrasulfotole/bromoxynil/thiencarbazone, pyrasulfotole/bromoxynil/thiencarbazone + MCPA ester, tolpyralate and fluroxypyr/halauxifen + MCPA EHEe0
- Interactor
- common chickweede0weed
- Outcome
- common chickweed density and biomasse0
- Direction
- similare0
- Comparator
- non-treated weedy controle0
Not reportedValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fluroxypyr/bromoxynil/MCPA, pyrasulfotole/bromoxynil,pyrasulfotole/bromoxynil/fluroxypyr,pyrasulfotole/bromoxynil/thiencarbazone, pyrasulfotole/bromoxynil/thiencarbazone + MCPA ester, tolpyralate and fluroxypyr/halauxifen + MCPA EHE, applied POST, controlled common chickweed only 5% - 42% at 2 weeks after treatment (WAT) and 1% - 23% at 4 WAT and resulted in common chickweed density and biomass that was similar to non-treated weedy control.”
t0“Winter Wheat”
Claim · model-written summary
Fluroxypyr/halauxifen + pyroxsulam + MCPA EHE provided 57% - 82% chickweed control.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- Fluroxypyr/halauxifen + pyroxsulam + MCPA EHEe0
- Interactor
- common chickweede0weed
- Outcome
- control of common chickweede0
- Direction
- providede0
- Value
- 57% - 82%e0
- Comparator
- non-treated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fluroxypyr/halauxifen + pyroxsulam + MCPA EHE, applied POST, provided 57% - 82% control of common chickweed and reduced density 93% and biomass 98% compared to the non-treated control.”
t0“Winter Wheat”
Claim · model-written summary
Fluroxypyr/halauxifen + pyroxsulam + MCPA EHE reduced chickweed density by 93%.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- Fluroxypyr/halauxifen + pyroxsulam + MCPA EHEe0
- Interactor
- common chickweede0weed
- Outcome
- densitye0
- Direction
- reducede0
- Value
- 93%e0
- Comparator
- non-treated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fluroxypyr/halauxifen + pyroxsulam + MCPA EHE, applied POST, provided 57% - 82% control of common chickweed and reduced density 93% and biomass 98% compared to the non-treated control.”
t0“Winter Wheat”
Claim · model-written summary
Fluroxypyr/halauxifen + pyroxsulam + MCPA EHE reduced chickweed biomass by 98%.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- Fluroxypyr/halauxifen + pyroxsulam + MCPA EHEe0
- Interactor
- common chickweede0weed
- Outcome
- biomasse0
- Direction
- reducede0
- Value
- 98%e0
- Comparator
- non-treated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fluroxypyr/halauxifen + pyroxsulam + MCPA EHE, applied POST, provided 57% - 82% control of common chickweed and reduced density 93% and biomass 98% compared to the non-treated control.”
t0“Winter Wheat”
Claim · model-written summary
The tribenuron containing herbicide group controlled chickweed control of common chickweed by 98% - 100%.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- Thifensulfuron/tribenuron, thifensulfuron/tribenuron + MCPA ester, thifensulfuron/tribenuron + fluroxypyr + MCPA ester, tribenuron + thiencarbazone, and tribenuron + thiencarbazone + MCPA estere0
- Interactor
- common chickweede0weed
- Outcome
- common chickweede0
- Direction
- controllede0
- Value
- 98% - 100%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thifensulfuron/tribenuron, thifensulfuron/tribenuron + MCPA ester, thifensulfuron/tribenuron + fluroxypyr + MCPA ester, tribenuron + thiencarbazone, and tribenuron + thiencarbazone + MCPA ester, applied POST, controlled common chickweed 98% - 100% and reduced common chickweed density 96% - 98% and common chickweed biomass 99%.”
t0“Winter Wheat”
Claim · model-written summary
The tribenuron containing herbicide group reduced chickweed common chickweed density by 96% - 98%.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- Thifensulfuron/tribenuron, thifensulfuron/tribenuron + MCPA ester, thifensulfuron/tribenuron + fluroxypyr + MCPA ester, tribenuron + thiencarbazone, and tribenuron + thiencarbazone + MCPA estere0
- Interactor
- common chickweede0weed
- Outcome
- common chickweed densitye0
- Direction
- reducede0
- Value
- 96% - 98%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thifensulfuron/tribenuron, thifensulfuron/tribenuron + MCPA ester, thifensulfuron/tribenuron + fluroxypyr + MCPA ester, tribenuron + thiencarbazone, and tribenuron + thiencarbazone + MCPA ester, applied POST, controlled common chickweed 98% - 100% and reduced common chickweed density 96% - 98% and common chickweed biomass 99%.”
t0“Winter Wheat”
Claim · model-written summary
The tribenuron containing herbicide group reduced chickweed common chickweed biomass by 99%.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- Thifensulfuron/tribenuron, thifensulfuron/tribenuron + MCPA ester, thifensulfuron/tribenuron + fluroxypyr + MCPA ester, tribenuron + thiencarbazone, and tribenuron + thiencarbazone + MCPA estere0
- Interactor
- common chickweede0weed
- Outcome
- common chickweed biomasse0
- Direction
- reducede0
- Value
- 99%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thifensulfuron/tribenuron, thifensulfuron/tribenuron + MCPA ester, thifensulfuron/tribenuron + fluroxypyr + MCPA ester, tribenuron + thiencarbazone, and tribenuron + thiencarbazone + MCPA ester, applied POST, controlled common chickweed 98% - 100% and reduced common chickweed density 96% - 98% and common chickweed biomass 99%.”
t0“Winter Wheat”
Claim · model-written summary
Tribenuron containing treatments were the most efficacious for common chickweed control in wheat.
- Taxon
- wheatTriticum aestivume0
- Interactor
- common chickweede0weed
- Outcome
- most efficacious for the control of common chickweede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Based on these results, herbicide treatments which contained tribenuron including thifensulfuron/tribenuron, thifensulfuron/tribenuron + MCPA ester, thifensulfuron/tribenuron + fluroxypyr + MCPA ester, tribenuron + thiencarbazone, and tribenuron + thiencarbazone + MCPA ester were the most efficacious for the control of common chickweed in wheat.”
Claim · model-written summary
Fluroxypyr/halauxifen + pyroxsulam + MCPA EHE can provide adequate chickweed control in winter wheat.
- Taxon
- winter wheatTriticum aestivume0
- Interactor
- common chickweede0weed
- Outcome
- adequate control of common chickweede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In addition, fluroxypyr/halauxifen + pyroxsulam + MCPA EHE, applied POST, can provide adequate control of common chickweed in winter wheat.”
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8 of 11 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.