Abstract
Recommendations regarding the timing of herbicide application in winter wheat vary among production areas. The current increase in area of winter wheat production in Saskatchewan warrants an examination of herbicide recommendations for this non-traditional production area. Field research was conducted for 2 yr at several locations in Saskatchewan using 2,4-D, MCPA, dicamba, bromoxynil, chlorsulfuron, and clopyralid, applied in the late fall or early spring, to determine the effects of time and rate of application on winter wheat grain yield. Winter wheat (Triticum aestivum L. ’Norstar’) was tolerant to fall application of all herbicides at rates recommended for spring application. Grain yield was reduced in some cases when double the recommended spring rate of 2,4-D, MCPA, bromoxynil, and clopyralid was applied in the fall. Spring application of clopyralid resulted in significantly lower grain yield than fall application. All herbicides tested show potential for use in winter wheat production, although caution is warranted for spring application of clopyralid.Key words: Wheat (winter), 2,4-D, MCPA, dicamba, bromoxynil, chlorsulfuron
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Claims 8
Claim · model-written summary
Winter wheat tolerated fall application of all tested herbicides at spring recommended rates.
- Taxon
- Triticum aestivum L.
Triticum aestivume0 - Material
- Norstare0
- Treatment
- fall application of all herbicides at rates recommended for spring applicatione0
- Outcome
- tolerante0
- Setting
- Saskatchewant0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat (Triticum aestivum L. ’Norstar’) was tolerant to fall application of all herbicides at rates recommended for spring application.”
t0“several locations in Saskatchewan”
Claim · model-written summary
Double rate fall 2,4-D reduced grain yield in some cases.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- double the recommended spring rate of 2,4-De0
- Outcome
- Grain yielde0
- Direction
- reducede0
- Qualifier
- in some casese0
- Comparator
- recommended spring ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield was reduced in some cases when double the recommended spring rate of 2,4-D, MCPA, bromoxynil, and clopyralid was applied in the fall.”
t0“WINTER WHEAT”
Claim · model-written summary
Double rate fall MCPA reduced grain yield in some cases.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- MCPAe0
- Outcome
- Grain yielde0
- Direction
- reducede0
- Qualifier
- in some casese0
- Comparator
- recommended spring ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield was reduced in some cases when double the recommended spring rate of 2,4-D, MCPA, bromoxynil, and clopyralid was applied in the fall.”
t0“WINTER WHEAT”
Claim · model-written summary
Double rate fall bromoxynil reduced grain yield in some cases.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- bromoxynile0
- Outcome
- Grain yielde0
- Direction
- reducede0
- Qualifier
- in some casese0
- Comparator
- recommended spring ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield was reduced in some cases when double the recommended spring rate of 2,4-D, MCPA, bromoxynil, and clopyralid was applied in the fall.”
t0“WINTER WHEAT”
Claim · model-written summary
Double rate fall clopyralid reduced grain yield in some cases.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- clopyralide0
- Outcome
- Grain yielde0
- Direction
- reducede0
- Qualifier
- in some casese0
- Comparator
- recommended spring ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield was reduced in some cases when double the recommended spring rate of 2,4-D, MCPA, bromoxynil, and clopyralid was applied in the fall.”
t0“WINTER WHEAT”
Claim · model-written summary
Spring clopyralid significantly lowered grain yield compared with fall application.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- Spring application of clopyralide0
- Outcome
- grain yielde0
- Direction
- lowere0
- Comparator
- fall applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spring application of clopyralid resulted in significantly lower grain yield than fall application.”
t0“WINTER WHEAT”
Claim · model-written summary
The authors conclude all tested herbicides have potential for winter wheat production.
- Taxon
- winter wheatTriticum aestivume0
- Outcome
- potential for use in winter wheat productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All herbicides tested show potential for use in winter wheat production”
Claim · model-written summary
The authors urge caution with spring clopyralid application.
- Taxon
- winter wheatTriticum aestivumt0
- Outcome
- caution is warranted for spring application of clopyralide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“caution is warranted for spring application of clopyralid.”
t0“WINTER WHEAT”
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