Abstract
Data from a spring wheat (Triticum aestivum L.)/spring dry pea (Pisum sativum L.) rotation, in southeastern Washington, were used to evaluate a Phoenix rotary harrow prototype, pre-plant glyphosate application, and an M&W Minimum Tillage rotary hoe on crop density, weed cover and biomass at maturity, and crop yield. The experiment consisted of two pre-plant treatments [glyphosate (control) or rotary harrow], two post-emergence chemical treatments (control or herbicide application), and five in-crop tillage treatments (control, 2-5 rotary hoe operations) in the 2004 growing season. Hoe operations did not cause a significant reduction in crop density. When the post-emergence herbicide was applied to the wheat and peas, weed cover was significantly reduced by at least 45 and 27%, respectively. Weed biomass was significantly reduced when glyphosate and the post-emergence herbicide were applied in wheat. Weed biomass was similar for all weed control treatments in pea, although the post-emergence herbicide tended to reduce weed biomass. Wheat and pea yields were not affected by the weed control treatments and were no less than 1.1 and 2.5 t ha, respectively. In the 2005 growing season, the experiment consisted of four pre-plant treatments (control, glyphosate, rotary harrow, glyphosate + rotary harrow) and four in-crop tillage treatments (control, 2, 3, or 4 rotary hoe operations). Rotary hoe operations did not cause a significant reduction in crop density. Weed biomass of the control treatments were about five times those of the previous year. Rotary 1 Phoenix Rotary Equipment Ltd., Nisku, AB, Canada 2 M&W Gear, Gibson City, IL
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Claims 10
Claim · model-written summary
Rotary hoe operations did not significantly reduce crop density in 2004.
Not reportedTaxonComparator
Verbatim
e0“Hoe operations did not cause a significant reduction in crop density.”
Claim · model-written summary
Post-emergence herbicide reduced weed cover in wheat by at least 45%.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- post-emergence herbicidee0
- Interactor
- weede0weed
- Outcome
- weed covere0
- Direction
- reducede0
- Value
- 45e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the post-emergence herbicide was applied to the wheat and peas, weed cover was significantly reduced by at least 45 and 27%, respectively.”
e1“spring wheat (Triticum aestivum L.)”
Claim · model-written summary
Post-emergence herbicide reduced weed cover in peas by at least 27%.
- Taxon
- peas
Lathyrus oleraceuse0 - Treatment
- post-emergence herbicidee0
- Interactor
- weede0weed
- Outcome
- weed covere0
- Direction
- reducede0
- Value
- 27%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the post-emergence herbicide was applied to the wheat and peas, weed cover was significantly reduced by at least 45 and 27%, respectively.”
Claim · model-written summary
Glyphosate and post-emergence herbicide significantly reduced weed biomass in wheat.
- Taxon
- wheatTriticum aestivume0
- Treatment
- glyphosate and the post-emergence herbicidee0
- Interactor
- Weede0weed
- Outcome
- Weed biomasse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weed biomass was significantly reduced when glyphosate and the post-emergence herbicide were applied in wheat.”
Claim · model-written summary
Weed biomass was similar across weed-control treatments in pea.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- weed control treatmentse0
- Interactor
- Weede0weed
- Outcome
- Weed biomasse0
- Direction
- similare0
- Comparator
- all weed control treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weed biomass was similar for all weed control treatments in pea”
Claim · model-written summary
Post-emergence herbicide tended to reduce weed biomass in pea.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- post-emergence herbicidee0
- Interactor
- Weede0weed
- Outcome
- weed biomasse0
- Direction
- reducee0
- Qualifier
- tended toe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weed biomass was similar for all weed control treatments in pea, although the post-emergence herbicide tended to reduce weed biomass.”
Claim · model-written summary
Weed control treatments did not affect wheat yield, which was at least 1.1 t ha.
- Taxon
- WheatTriticum aestivume0
- Treatment
- weed control treatmentse0
- Outcome
- yieldse0
- Direction
- not affectede0
- Value
- 1.1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat and pea yields were not affected by the weed control treatments and were no less than 1.1 and 2.5 t ha, respectively.”
Claim · model-written summary
Weed control treatments did not affect pea yield, which was at least 2.5 t ha.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- weed control treatmentse0
- Outcome
- yieldse0
- Direction
- not affectede0
- Value
- 2.5 t hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat and pea yields were not affected by the weed control treatments and were no less than 1.1 and 2.5 t ha, respectively.”
Claim · model-written summary
Rotary hoe operations did not significantly reduce crop density in 2005.
- Treatment
- Rotary hoe operationse0
- Outcome
- crop densitye0
- Direction
- did not cause a significant reductione0
Not reportedTaxonComparator
Verbatim
e0“Rotary hoe operations did not cause a significant reduction in crop density.”
Claim · model-written summary
Control weed biomass in 2005 was about five times that in the prior year.
- Interactor
- Weede0weed
- Outcome
- Weed biomasse0
- Direction
- five timese0
- Value
- five timese0
- Comparator
- previous yeare0
Not reportedTaxon
Verbatim
e0“Weed biomass of the control treatments were about five times those of the previous year.”
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