Abstract
In the Pacific Northwest (PNW), feral rye is a predominant winter annual grass weed in the low-rainfall region where a winter wheat–summer fallow rotation has been practiced for more than 130 yr. Recently, producers began including winter canola in their rotation, which provides additional herbicide options to control feral rye. A 3-yr study was conducted in Washington to determine the efficacy of clethodim, quizalofop, and glyphosate on feral rye control and winter canola yield. During the first year of the study herbicides were applied in the spring, and they increased canola yield and decreased feral rye biomass, density, and seed production similarly when compared with the nontreated control. During the last 2 yr of the study, split applications of quizalofop and glyphosate were the most effective treatments for controlling rye (> 95%) and increasing canola yield. In general, clethodim was less effective than both quizalofop and glyphosate in controlling feral rye. Results from this study indicate that quizalofop in conventional or glyphosate-resistant winter canola and glyphosate in glyphosate-resistant winter canola can effectively control feral rye.
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Claims 8
Claim · model-written summary
Spring herbicides increased canola yield relative to untreated control.
- Taxon
- canola
.jpg?width=60)
Brassica napus var. napuse0 - Treatment
- herbicidese1
- Outcome
- canola yielde0
- Direction
- increasede0
- Comparator
- nontreated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“they increased canola yield and decreased feral rye biomass, density, and seed production similarly when compared with the nontreated control”
e1“herbicides were applied in the spring”
Claim · model-written summary
Spring herbicides reduced feral rye biomass, density and seed production relative to untreated control.
- Taxon
- canolaBrassica napus var. napuse0
- Treatment
- herbicidese1
- Interactor
- feral ryee0weed
- Outcome
- feral rye biomass, density, and seed productione0
- Direction
- decreasede0
- Comparator
- nontreated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“they increased canola yield and decreased feral rye biomass, density, and seed production similarly when compared with the nontreated control”
e1“herbicides were applied in the spring”
Claim · model-written summary
Split quizalofop applications controlled more than 95% of rye.
- Taxon
- canolaBrassica napus var. napuse0
- Treatment
- split applications of quizalofope0
- Interactor
- rye
Secale cerealee0weed - Outcome
- controlling ryee0
- Direction
- most effectivee0
- Value
- > 95%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“split applications of quizalofop and glyphosate were the most effective treatments for controlling rye (> 95%) and increasing canola yield”
Claim · model-written summary
Split glyphosate applications controlled more than 95% of rye.
- Taxon
- canolaBrassica napus var. napuse0
- Treatment
- glyphosatee0
- Interactor
- ryeSecale cerealee0weed
- Outcome
- controlling ryee0
- Direction
- most effectivee0
- Value
- > 95%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“split applications of quizalofop and glyphosate were the most effective treatments for controlling rye (> 95%) and increasing canola yield”
Claim · model-written summary
Split quizalofop applications increased canola yield.
- Taxon
- canolaBrassica napus var. napuse0
- Treatment
- split applications of quizalofope0
- Outcome
- canola yielde0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“split applications of quizalofop and glyphosate were the most effective treatments for controlling rye (> 95%) and increasing canola yield”
Claim · model-written summary
Split glyphosate applications increased canola yield.
- Taxon
- canolaBrassica napus var. napuse0
- Treatment
- glyphosatee0
- Outcome
- canola yielde0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“split applications of quizalofop and glyphosate were the most effective treatments for controlling rye (> 95%) and increasing canola yield”
Claim · model-written summary
Clethodim was less effective than quizalofop and glyphosate against feral rye.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- clethodime0
- Interactor
- feral ryee0weed
- Outcome
- controlling feral ryee0
- Direction
- less effectivee0
- Comparator
- quizalofop and glyphosatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“clethodim was less effective than both quizalofop and glyphosate in controlling feral rye”
t0“canola”
Claim · model-written summary
The authors conclude quizalofop and glyphosate can control feral rye in winter canola.
- Taxon
- winter canolaBrassica napus var. napuse0
- Outcome
- control feral ryee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“quizalofop in conventional or glyphosate-resistant winter canola and glyphosate in glyphosate-resistant winter canola can effectively control feral rye”
The same questions in other papers
glyphosate · yield · Brassica napus (oilseed rape)Results differ
5 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- negative
- negative
5 papers more in this group
See all 9 papers →quizalofop · yield · Brassica napus (oilseed rape)Positive and negative results
1 in the opposite direction
- negative
herbicide · yield · Brassica napus (oilseed rape)Results differ
31 papers in the same direction as this paper · 15 in the opposite direction · 4 reporting no difference from an alternative
- positive
- no effect
- negative
47 papers more in this group
See all 51 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.