Abstract
In a 6-yr field study, johnsongrass growing in ‘Forrest’ soybeans for the entire growing season reduced yields 45% in the year with most rainfall and 69% in the year with least rainfall. Yields of soybeans grown without johnsongrass competition were 56% higher in the year with the most rainfall than in the year with least rainfall. Yields of soybeans with full-season competition were reduced 75% from those in the year with most rainfall as compared with those in the year with least rainfall. The number of weeks of johnsongrass competition required to significantly reduce soybean yields varied from 3 wk, in the year with least rainfall, to 8 wk, in the year with most rainfall. Nine applications of sethoxydim at 0.84 kg ai ha -1 or haloxyfop at 0.55 kg ai ha -1 each year did not reduce soybean growth or yields.
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Claims 8
Claim · model-written summary
Full-season johnsongrass reduced soybean yield 45% in the wettest year.
- Taxon
- soybeans
Glycine maxe0 - Material
- ‘Forrest’e0
- Treatment
- johnsongrass growing in ‘Forrest’ soybeans for the entire growing seasone0
- Interactor
- johnsongrass
.jpg?width=60)
Sorghum halepensee0weed - Outcome
- yieldse0
- Direction
- reducede0
- Value
- 45%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“johnsongrass growing in ‘Forrest’ soybeans for the entire growing season reduced yields 45% in the year with most rainfall”
Claim · model-written summary
Full-season johnsongrass reduced soybean yield 69% in the driest year.
- Taxon
- soybeansGlycine maxe0
- Treatment
- johnsongrass growing in ‘Forrest’ soybeans for the entire growing seasone0
- Interactor
- johnsongrassSorghum halepensee0weed
- Outcome
- yieldse0
- Direction
- reducede0
- Value
- 69%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“johnsongrass growing in ‘Forrest’ soybeans for the entire growing season reduced yields 45% in the year with most rainfall and 69% in the year with least rainfall.”
Claim · model-written summary
Without johnsongrass, wet-year soybean yield was 56% higher than dry-year yield.
- Taxon
- soybeansGlycine maxe0
- Interactor
- johnsongrassSorghum halepensee0weed
- Outcome
- Yieldse0
- Direction
- highere0
- Value
- 56%e0
- Comparator
- year with least rainfalle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields of soybeans grown without johnsongrass competition were 56% higher in the year with the most rainfall than in the year with least rainfall.”
Claim · model-written summary
With full-season competition, dry-year soybean yield was 75% below wet-year yield.
- Taxon
- soybeansGlycine maxe0
- Outcome
- Yieldse0
- Direction
- reducede0
- Value
- 75%e0
- Comparator
- year with most rainfalle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields of soybeans with full-season competition were reduced 75% from those in the year with most rainfall as compared with those in the year with least rainfall.”
Claim · model-written summary
Three weeks of competition significantly reduced soybean yield in the driest year.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“competition required to significantly reduce soybean yields varied from 3 wk, in the year with least rainfall, to 8 wk, in the year with most rainfall.”
t0“Soybean”
Claim · model-written summary
Eight weeks of competition significantly reduced soybean yield in the wettest year.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“competition required to significantly reduce soybean yields varied from 3 wk, in the year with least rainfall, to 8 wk, in the year with most rainfall.”
t0“Soybean”
Claim · model-written summary
Repeated sethoxydim did not reduce soybean growth or yield.
- Taxon
- soybeanGlycine maxe0
- Treatment
- sethoxydim at 0.84 kg ai ha -1e0
- Outcome
- soybean growth or yieldse0
- Direction
- did not reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nine applications of sethoxydim at 0.84 kg ai ha -1 or haloxyfop at 0.55 kg ai ha -1 each year did not reduce soybean growth or yields.”
Claim · model-written summary
Repeated haloxyfop did not reduce soybean growth or yield.
- Taxon
- soybeanGlycine maxe0
- Treatment
- haloxyfop at 0.55 kg ai ha -1e0
- Outcome
- soybean growth or yieldse0
- Direction
- did not reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nine applications of sethoxydim at 0.84 kg ai ha -1 or haloxyfop at 0.55 kg ai ha -1 each year did not reduce soybean growth or yields.”
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See all 73 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.