Abstract
Summary: Soybean yields, pod and branch numbers were inversely related to the height of velvetleaf ( Abutilon theophrasti ). This effect was attributed to increasing interception of light with increasing height of A. theophrasti . Reduction; in soybean yield and yield components were greater if A. theophrasti was maintained at various heights for only 3 weeks rather than 6 weeks following soybean emergence. This effect was attributed to a longer duration of light competition by the weed. Even when the A. theophrasti canopy was kept 25% below that of soybean for 4 weeks, soybean yields, pod and branch numbers decreased when the weed was allowed to regrow during the remainder of the season, but not if the weed was removed after the initial 4‐week clipping period. No reduction in seed yields, pod and branch numbers was noted if A. theophrasti plants 25% shorter than soybeans were removed or allowed to resume growth after the initial 6 or 8 weeks of clipping. Soybean seed size was slightly affected by A. theophrasti canopy height and duration of competition.
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Claims 6
Claim · model-written summary
Soybean yields and pod and branch numbers declined as velvetleaf height increased.
- Taxon
- Soybean
Glycine maxe0 - Interactor
- velvetleaf
Abutilon theophrastie0weed - Outcome
- yields, pod and branch numberse0
- Direction
- inversely relatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean yields, pod and branch numbers were inversely related to the height of velvetleaf ( Abutilon theophrasti ).”
Claim · model-written summary
Greater weed height increased light interception, which authors attributed as the cause of yield loss.
- Taxon
- SoybeanGlycine maxe1
- Interactor
- A. theophrastiAbutilon theophrastie0weed
- Outcome
- increasing interception of lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This effect was attributed to increasing interception of light with increasing height of A. theophrasti .”
e1“Soybean yields, pod and branch numbers”
Claim · model-written summary
Soybean yield and component reductions were greater after 3 than 6 weeks of weed maintenance.
- Taxon
- soybeanGlycine maxe0
- Treatment
- A. theophrasti was maintained at various heights for only 3 weekse0
- Interactor
- A. theophrastiAbutilon theophrastie0weed
- Outcome
- soybean yield and yield componentse0
- Direction
- greatere0
- Comparator
- 6 weekse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reduction; in soybean yield and yield components were greater if A. theophrasti was maintained at various heights for only 3 weeks rather than 6 weeks following soybean emergence.”
Claim · model-written summary
Weed regrowth after four weeks of clipping reduced soybean yield and pod and branch numbers.
- Taxon
- soybeanGlycine maxe0
- Treatment
- weed was allowed to regrowe0
- Interactor
- A. theophrastiAbutilon theophrastie1weed
- Outcome
- soybean yields, pod and branch numberse0
- Direction
- decreasede0
- Comparator
- weed was removede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean yields, pod and branch numbers decreased when the weed was allowed to regrow during the remainder of the season, but not if the weed was removed after the initial 4‐week clipping period”
e1“A. theophrasti canopy was kept 25% below that of soybean for 4 weeks”
Claim · model-written summary
No yield or component reduction occurred after six or eight weeks of clipping, regardless of weed removal or regrowth.
- Taxon
- soybeansGlycine maxe0
- Treatment
- initial 6 or 8 weeks of clippinge0
- Interactor
- A. theophrastiAbutilon theophrastie0weed
- Outcome
- seed yields, pod and branch numberse0
- Direction
- No reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No reduction in seed yields, pod and branch numbers was noted if A. theophrasti plants 25% shorter than soybeans were removed or allowed to resume growth after the initial 6 or 8 weeks of clipping.”
Claim · model-written summary
Soybean seed size was slightly affected by weed height and competition duration.
- Taxon
- SoybeanGlycine maxe0
- Interactor
- A. theophrastiAbutilon theophrastie0weed
- Outcome
- seed sizee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean seed size was slightly affected by A. theophrasti canopy height and duration of competition.”
The same questions in other papers
Abutilon theophrasti · yield · Glycine max (soybean)Positive and negative results
8 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- negative
7 papers more in this group
See all 11 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.