Abstract
Winter wheat is the predominant crop in Oklahoma, but winter annual grasses are becoming increasingly difficult to control. Summer crop rotations have not been generally adopted; it was decided, therefore, to use winter canola in a crop rotation. However, very little is known about how well herbicides used in canola production will control the winter annual grasses found in Oklahoma wheat fields. Thus, an experiment was conducted at three sites, and repeated the following year, to determine the efficacy of trifluralin, quizalofop, clethodim, and glyphosate in canola production. The weeds evaluated in the experiment were Italian ryegrass, feral cereal rye, and volunteer wheat, along with two varieties of canola: a glyphosate-resistant variety and a conventional variety. All herbicides effectively controlled volunteer wheat. Feral cereal rye and Italian ryegrass varied in response to the herbicide treatments. Trifluralin followed by (fb) quizalofop and glyphosate fb glyphosate were effective on all target species across locations. Effective control of grass weeds was obtained in both conventional and glyphosate-resistant winter canola. Most herbicide treatments improved canola yield over the nontreated check. This experiment demonstrates that Oklahoma wheat producers can effectively rotate to canola to use other herbicides for control of problematic grassy weeds.
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Claims 7
Claim · model-written summary
All herbicides effectively controlled volunteer wheat in winter canola.
- Taxon
- canola
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Brassica napus var. napust0 - Treatment
- herbicidese1
- Interactor
- volunteer wheate1weed
- Outcome
- controlled volunteer wheate1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“Winter Canola”
e1“All herbicides effectively controlled volunteer wheat”
Claim · model-written summary
Feral cereal rye and Italian ryegrass varied in response to the herbicide treatments.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- herbicide treatmentse2
- Interactor
- Feral cereal ryee2weed
- Second interactor
- Italian ryegrass
Lolium multiflorume2weed - Outcome
- varied in response to the herbicide treatmentse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Canola”
e2“Feral cereal rye and Italian ryegrass varied in response to the herbicide treatments”
Claim · model-written summary
Trifluralin followed by quizalofop was effective on all target species across locations.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- Trifluralin followed by (fb) quizalofope3
- Outcome
- effective on all target speciese3
- Setting
- across locationse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Canola”
e3“Trifluralin followed by (fb) quizalofop and glyphosate fb glyphosate were effective on all target species across locations”
Claim · model-written summary
Glyphosate followed by glyphosate was effective on all target species across locations.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- glyphosate fb glyphosatee3
- Outcome
- effective on all target speciese3
- Setting
- across locationse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Canola”
e3“Trifluralin followed by (fb) quizalofop and glyphosate fb glyphosate were effective on all target species across locations”
Claim · model-written summary
Effective control of grass weeds was obtained in both conventional and glyphosate-resistant winter canola.
- Taxon
- canolaBrassica napus var. napust0
- Material
- conventional and glyphosate-resistante4
- Interactor
- grass weedse4weed
- Outcome
- Effective control of grass weedse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Canola”
e4“Effective control of grass weeds was obtained in both conventional and glyphosate-resistant winter canola”
Claim · model-written summary
Most herbicide treatments improved canola yield over the nontreated check.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- herbicide treatmentse5
- Outcome
- canola yielde5
- Direction
- improvede5
- Comparator
- nontreated checke5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Canola”
e5“Most herbicide treatments improved canola yield over the nontreated check”
Claim · model-written summary
Oklahoma wheat producers can rotate to canola to use other herbicides for control of problematic grassy weeds.
- Taxon
- canolaBrassica napus var. napust0
- Outcome
- rotate to canola to use other herbicides for control of problematic grassy weedse6
- Setting
- Oklahomae6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Canola”
e6“This experiment demonstrates that Oklahoma wheat producers can effectively rotate to canola to use other herbicides for control of problematic grassy weeds”
The same questions in other papers
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.