Abstract
A 4-yr field experiment was conducted to determine the merits of combining cultural and chemical controls to manage foxtail barley in reduced-tillage systems. Factors studied were crop row spacing, seeding rate, and application rate and timing of glyphosate within a spring wheat-flax cropping sequence. Glyphosate applied preseeding at 400 or 800 g/ha killed foxtail barley seedlings but only suppressed established perennial plants. Glyphosate applied postharvest at 800 g/ha killed 60 to 70% of established plants. Combinations of preseeding and postharvest glyphosate gave the greatest reductions in foxtail barley biomass and seed production and resulted in the greatest increases in crop yield. Including flax in the rotation allowed use of grass herbicides such as quizalofop or sethoxydim that effectively controlled foxtail barley seedlings and provided some suppression of perennial plants. An increase in wheat seeding rate from 75 to 115 kg/ha reduced foxtail barley growth and increased wheat yield in 3 of 4 yr. Increasing the flax seeding rate from 40 to 80 kg/ha or reducing wheat and flax row spacing from 30 to 20 cm provided little benefit in managing foxtail barley or increasing crop yield. A multiyear approach combining agronomic practices and timely use of herbicides should allow growers to effectively manage foxtail barley in annual cropping systems using conservation tillage.
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Claims 11
Claim · model-written summary
Preseeding glyphosate at 400 or 800 g/ha killed foxtail barley seedlings.
- Taxon
- foxtail barley
.jpg?width=60)
Hordeum jubatume0 - Treatment
- Glyphosate applied preseeding at 400 or 800 g/hae0
- Interactor
- foxtail barleyHordeum jubatume0weed
- Outcome
- foxtail barley seedlingse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Glyphosate applied preseeding at 400 or 800 g/ha killed foxtail barley seedlings”
Claim · model-written summary
Preseeding glyphosate only suppressed established foxtail barley perennials.
- Taxon
- foxtail barleyHordeum jubatumt0
- Treatment
- Glyphosate applied preseeding at 400 or 800 g/hae1
- Interactor
- foxtail barleyHordeum jubatumt0weed
- Outcome
- established perennial plantse0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but only suppressed established perennial plants”
t0“Foxtail Barley (Hordeum jubatum)”
e1“Glyphosate applied preseeding at 400 or 800 g/ha killed foxtail barley seedlings”
Claim · model-written summary
Postharvest glyphosate at 800 g/ha killed 60 to 70% of established foxtail barley plants.
- Taxon
- foxtail barleyHordeum jubatumt0
- Treatment
- Glyphosate applied postharvest at 800 g/hae0
- Interactor
- foxtail barleyHordeum jubatumt0weed
- Outcome
- established plantse0
- Value
- 60 to 70%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate applied postharvest at 800 g/ha killed 60 to 70% of established plants”
t0“Foxtail Barley (Hordeum jubatum)”
Claim · model-written summary
Combined preseeding and postharvest glyphosate gave the greatest reductions in foxtail barley biomass and seed production.
- Taxon
- foxtail barleyHordeum jubatume0
- Treatment
- Combinations of preseeding and postharvest glyphosatee0
- Interactor
- foxtail barleyHordeum jubatume0weed
- Outcome
- foxtail barley biomass and seed productione0
- Direction
- greatest reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Combinations of preseeding and postharvest glyphosate gave the greatest reductions in foxtail barley biomass and seed production”
Claim · model-written summary
Combined preseeding and postharvest glyphosate gave the greatest crop yield increases.
- Taxon
- spring wheat-flaxt0
- Treatment
- Combinations of preseeding and postharvest glyphosatee0
- Interactor
- foxtail barleyHordeum jubatume0weed
- Outcome
- crop yielde0
- Direction
- greatest increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Combinations of preseeding and postharvest glyphosate gave the greatest reductions in foxtail barley biomass and seed production and resulted in the greatest increases in crop yield”
t0“spring wheat-flax cropping sequence”
Claim · model-written summary
Flax rotation enabled grass herbicides that effectively controlled foxtail barley seedlings and partly suppressed perennials.
- Taxon
- flax
Linum usitatissimume0 - Treatment
- quizalofop or sethoxydime0
- Interactor
- foxtail barleyHordeum jubatume0weed
- Outcome
- foxtail barley seedlingse0
- Direction
- controllede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Including flax in the rotation allowed use of grass herbicides such as quizalofop or sethoxydim that effectively controlled foxtail barley seedlings and provided some suppression of perennial plants”
Claim · model-written summary
Raising wheat seeding rate from 75 to 115 kg/ha reduced foxtail barley growth.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- increase in wheat seeding rate from 75 to 115 kg/hae0
- Interactor
- foxtail barleyHordeum jubatume0weed
- Outcome
- foxtail barley growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An increase in wheat seeding rate from 75 to 115 kg/ha reduced foxtail barley growth”
Claim · model-written summary
Raising wheat seeding rate increased wheat yield in three of four years.
- Taxon
- wheatTriticum aestivume0
- Treatment
- increase in wheat seeding rate from 75 to 115 kg/hae0
- Outcome
- wheat yielde0
- Direction
- increasede0
- Qualifier
- 3 of 4 yre0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An increase in wheat seeding rate from 75 to 115 kg/ha reduced foxtail barley growth and increased wheat yield in 3 of 4 yr”
Claim · model-written summary
Increasing flax seeding rate provided little benefit for weed management or crop yield.
- Taxon
- flaxLinum usitatissimume0
- Treatment
- Increasing the flax seeding rate from 40 to 80 kg/hae0
- Interactor
- foxtail barleyHordeum jubatume0weed
- Outcome
- managing foxtail barley or increasing crop yielde0
- Direction
- little benefite0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the flax seeding rate from 40 to 80 kg/ha or reducing wheat and flax row spacing from 30 to 20 cm provided little benefit in managing foxtail barley or increasing crop yield”
Claim · model-written summary
Narrower wheat and flax rows provided little benefit for weed management or crop yield.
- Taxon
- wheat and flaxLinum usitatissimumTriticum aestivume0
- Treatment
- reducing wheat and flax row spacing from 30 to 20 cme0
- Interactor
- foxtail barleyHordeum jubatume0weed
- Outcome
- managing foxtail barley or increasing crop yielde0
- Direction
- little benefite0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reducing wheat and flax row spacing from 30 to 20 cm provided little benefit in managing foxtail barley or increasing crop yield”
Claim · model-written summary
Authors recommend a multiyear combination of agronomic practices and timely herbicides for foxtail barley management.
- Taxon
- foxtail barleyHordeum jubatume0
- Outcome
- multiyear approach combining agronomic practices and timely use of herbicidese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A multiyear approach combining agronomic practices and timely use of herbicides should allow growers to effectively manage foxtail barley in annual cropping systems using conservation tillage”
The same questions in other papers
quizalofop · Hordeum jubatum · Linum usitatissimum (flax)Results agree
1 paper in the same direction as this paper
- positive
Sethoxydim · Hordeum jubatum · Linum usitatissimum (flax)Results agree
1 paper in the same direction as this paper
- positive
density · yield · Triticum aestivum (wheat)Positive and negative results
375 papers in the same direction as this paper · 115 in the opposite direction · 7 reporting no difference from an alternative
- negative
- positive
- positive
494 papers more in this group
See all 498 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.