Abstract
Dry peas (pea) usually require early and effective weed management for optimum yields. However, it is not always possible to control all weeds with a single herbicide application. In experiments at Lacombe and Lethbridge, Alberta, Canada, we determined the relative importance of controlling redstem filaree or wild oat, or both species. Bentazon, sethoxydim, or a imazethapyr/imazamox mixture was applied to control redstem filaree, wild oat, or both weeds, respectively. None of the herbicides caused visually detectable crop injury. Time of weed removal effects on pea yield were inconsistent. In addition, applying half or full herbicide rates did not usually influence weed biomass, pea yield, or pea seed weight. Averaged across all variables except herbicide, pea yield losses due to competition from redstem filaree, wild oat, or both species averaged 31, 47, or 53%, respectively. When redstem filaree and wild oat were controlled with imazethapyr/imazamox, pea yields were the same as weed-free check plots in three of four location-years (89% of weed-free yields for all four location-years). Optimal pea yields in weed communities with redstem filaree and wild oat as dominant species were more dependent upon selecting an herbicide that controlled both species than a specific time of weed removal or herbicide rate.
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Claims 8
Claim · model-written summary
Herbicides caused no visually detectable pea injury.
Not reportedTaxonComparator
Verbatim
e0“None of the herbicides caused visually detectable crop injury.”
Claim · model-written summary
Weed removal timing had inconsistent effects on pea yield.
- Taxon
- pea
Lathyrus oleraceuse0 - Treatment
- Time of weed removale0
- Outcome
- pea yielde0
- Direction
- inconsistente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Time of weed removal effects on pea yield were inconsistent.”
Claim · model-written summary
Half versus full herbicide rates did not usually influence weed biomass, pea yield, or pea seed weight.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- half or full herbicide ratese0
- Outcome
- weed biomass, pea yield, or pea seed weighte0
- Direction
- did not usually influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“applying half or full herbicide rates did not usually influence weed biomass, pea yield, or pea seed weight.”
Claim · model-written summary
Redstem filaree competition reduced pea yield by 31% on average.
- Taxon
- peaLathyrus oleraceuse0
- Interactor
- redstem filaree
Erodium cicutariume0weed - Outcome
- pea yield lossese0
- Direction
- lossese0
- Value
- 31e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pea yield losses due to competition from redstem filaree, wild oat, or both species averaged 31, 47, or 53%, respectively.”
Claim · model-written summary
Wild oat competition reduced pea yield by 47% on average.
- Taxon
- peaLathyrus oleraceuse0
- Interactor
- wild oate0weed
- Outcome
- pea yield lossese0
- Direction
- lossese0
- Value
- 47e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pea yield losses due to competition from redstem filaree, wild oat, or both species averaged 31, 47, or 53%, respectively.”
Claim · model-written summary
Combined redstem filaree and wild oat competition reduced pea yield by 53% on average.
- Taxon
- peaLathyrus oleraceuse0
- Interactor
- redstem filareeErodium cicutariume0weed
- Second interactor
- wild oate0weed
- Outcome
- pea yield lossese0
- Direction
- lossese0
- Value
- 53%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pea yield losses due to competition from redstem filaree, wild oat, or both species averaged 31, 47, or 53%, respectively.”
Claim · model-written summary
Control of both weeds with imazethapyr/imazamox gave weed-free-equivalent pea yields in three of four location-years, averaging 89% over all four.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- imazethapyr/imazamoxe0
- Interactor
- redstem filareeErodium cicutariume0weed
- Second interactor
- wild oate0weed
- Outcome
- pea yieldse0
- Direction
- the samee0
- Value
- 89%e0
- Comparator
- weed-free check plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When redstem filaree and wild oat were controlled with imazethapyr/imazamox, pea yields were the same as weed-free check plots in three of four location-years (89% of weed-free yields for all four location-years).”
Claim · model-written summary
Selecting a herbicide controlling both weeds was more important for optimal pea yields than removal timing or herbicide rate.
- Taxon
- peaLathyrus oleraceuse0
- Interactor
- redstem filareeErodium cicutariume0weed
- Second interactor
- wild oate0weed
- Outcome
- selecting an herbicide that controlled both speciese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Optimal pea yields in weed communities with redstem filaree and wild oat as dominant species were more dependent upon selecting an herbicide that controlled both species than a specific time of weed removal or herbicide rate.”
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See all 40 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.