Abstract
Wild oat (Avena fatua) control often is an integral management practice in cropping systems that include cereal crops. Experiments were conducted at two locations in Saskatchewan (Saskatoon and Scott), Canada, from 1994 to 1997 to determine the influence of ICIA 0604 rate (50, 100, 150, and 200 g ai/ha), water volume (30, 50, and 100 L/ha), spray mixture pH (unbuffered, close to pH 7.0; reduced, pH 4.0), late morning and evening application times, and sodium bicarbonate concentration of water source (Saskatoon water, negligible; Scott water, 695 mg/L) on wild oat fresh weight and wheat (Triticum aestivum) grain yield. Reducing ICIA 0604 rate below the recommended label rate (200 g/ha) increased wild oat fresh weight by 22% and decreased wheat grain yield by 7% when applied with 50 or 100 L/ha of water. Applications with 30 L/ha of water resulted in more wild oat growth (19%) and less wheat yield (6%), regardless of the ICIA 0604 rates. Spray mixture pH or time of application did not modify the effects of ICIA 0604 rate and water volume on wild oat fresh weight and wheat yield at Saskatoon. At Scott, the negative effects of ICIA 0604 rates lower than 200 g/ha applied with 50 or 100 L/ha of water were most apparent when applications were made in the morning, especially with an unbuffered spray mixture. ICIA 0604 applications made in the evening with 50 or 100 L/ha of water resulted in the lowest wild oat fresh weights and greatest wheat yields, regardless of the ICIA 0604 rate or spray mixture pH. Antagonism between sodium bicarbonate in the unbuffered water from Scott, as indicated by the spray mixture pH effect, and the time of application effect were important factors controlling treatment responses at Scott. Lower than recommended ICIA 0604 rates often maintained net returns, even though wheat yield responded negatively to reduced ICIA 0604 rates. Understanding the effects of water quality on wild oat control will allow producers to make prudent decisions regarding the optimal application parameters for ICIA 0604.Nomenclature: ICIA 0604 (proposed common name, tralkoxydim), 2-[1-(ethoxyimino)propyl]-3-hydroxy-5-(2,4,6-trimethylphenyl)cyclohex-2-enone; wild oat, Avena fatua L. #3 AVEFA; hard red spring wheat, Triticum aestivum L.Additional index words: Water volume, spray mixture pH, time of application, weed interference, AVEFA.
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Claims 10
Claim · model-written summary
Reducing ICIA 0604 below 200 g/ha increased wild oat fresh weight by 22% with 50 or 100 L/ha water.
Verbatim
e0“Reducing ICIA 0604 rate below the recommended label rate (200 g/ha) increased wild oat fresh weight by 22% and decreased wheat grain yield by 7% when applied with 50 or 100 L/ha of water.”
Claim · model-written summary
Reducing ICIA 0604 below 200 g/ha decreased wheat grain yield by 7% with 50 or 100 L/ha water.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- Reducing ICIA 0604 rate below the recommended label rate (200 g/ha)e0
- Interactor
- wild oate0weed
- Outcome
- wheat grain yielde0
- Direction
- decreasede0
- Value
- 7%e0
- Qualifier
- 50 or 100 L/ha of watere0
- Comparator
- recommended label rate (200 g/ha)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reducing ICIA 0604 rate below the recommended label rate (200 g/ha) increased wild oat fresh weight by 22% and decreased wheat grain yield by 7% when applied with 50 or 100 L/ha of water.”
Claim · model-written summary
Applying with 30 L/ha water increased wild oat growth by 19%.
Verbatim
e0“Applications with 30 L/ha of water resulted in more wild oat growth (19%) and less wheat yield (6%), regardless of the ICIA 0604 rates.”
e1“water volume (30, 50, and 100 L/ha)”
Claim · model-written summary
Applying with 30 L/ha water lowered wheat yield by 6%.
- Taxon
- wheatTriticum aestivume0
- Treatment
- 30 L/ha of watere0
- Interactor
- wild oate0weed
- Outcome
- wheat yielde0
- Direction
- lesse0
- Value
- 6%e0
- Comparator
- 50, and 100 L/hae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applications with 30 L/ha of water resulted in more wild oat growth (19%) and less wheat yield (6%), regardless of the ICIA 0604 rates.”
e1“water volume (30, 50, and 100 L/ha)”
Claim · model-written summary
At Saskatoon, spray pH and application time did not modify herbicide rate and water volume effects on wild oat fresh weight.
Verbatim
e0“Spray mixture pH or time of application did not modify the effects of ICIA 0604 rate and water volume on wild oat fresh weight and wheat yield at Saskatoon.”
Claim · model-written summary
At Saskatoon, spray pH and application time did not modify herbicide rate and water volume effects on wheat yield.
- Taxon
- wheatTriticum aestivume0
- Interactor
- wild oate0weed
- Outcome
- wheat yielde0
- Direction
- did not modifye0
- Setting
- Saskatoone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spray mixture pH or time of application did not modify the effects of ICIA 0604 rate and water volume on wild oat fresh weight and wheat yield at Saskatoon.”
Claim · model-written summary
At Scott, morning application, particularly unbuffered spray, accentuated negative effects of rates below 200 g/ha.
- Treatment
- in the morninge0
- Outcome
- negative effectse0
- Direction
- most apparente0
- Qualifier
- unbuffered spray mixturee0
- Setting
- Scotte0
Not reportedTaxon
Verbatim
e0“At Scott, the negative effects of ICIA 0604 rates lower than 200 g/ha applied with 50 or 100 L/ha of water were most apparent when applications were made in the morning, especially with an unbuffered spray mixture.”
Claim · model-written summary
Evening application with 50 or 100 L/ha water gave the lowest wild oat fresh weights.
- Taxon
- wild oate0
- Treatment
- ICIA 0604 applications made in the evening with 50 or 100 L/ha of watere0
- Outcome
- wild oat fresh weightse0
- Direction
- loweste0
Not reportedComparator
Verbatim
e0“ICIA 0604 applications made in the evening with 50 or 100 L/ha of water resulted in the lowest wild oat fresh weights and greatest wheat yields, regardless of the ICIA 0604 rate or spray mixture pH.”
Claim · model-written summary
Evening application with 50 or 100 L/ha water gave the greatest wheat yields.
- Taxon
- wheatTriticum aestivume0
- Treatment
- ICIA 0604 applications made in the evening with 50 or 100 L/ha of watere0
- Interactor
- wild oate0weed
- Outcome
- wheat yieldse0
- Direction
- greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ICIA 0604 applications made in the evening with 50 or 100 L/ha of water resulted in the lowest wild oat fresh weights and greatest wheat yields, regardless of the ICIA 0604 rate or spray mixture pH.”
Claim · model-written summary
Reduced ICIA 0604 rates often maintained net returns.
- Taxon
- wheatTriticum aestivume1
- Treatment
- Lower than recommended ICIA 0604 ratese0
- Outcome
- net returnse0
- Direction
- maintainede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lower than recommended ICIA 0604 rates often maintained net returns, even though wheat yield responded negatively to reduced ICIA 0604 rates.”
e1“wheat (Triticum aestivum) grain yield”
The same questions in other papers
label · yield · Triticum aestivum (wheat)Positive and negative results
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- positive
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See all 8 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.