Abstract
Weed competition in soybeans [ Glycine max (L.) Merr. ‘Clark 63′] with planted stands of velvetleaf ( Abutilon theophrasti Medic.), prickly sida ( Sida spinosa L.), and Venice mallow ( Hibiscus trionum L.) is reported. Weeds were planted 0, 10, 20, 30, and 40 days after soybeans and competed until soybeans matured. Soybean seed yields were reduced 720, 250, and 230 kg/ha by velvetleaf, Venice mallow, and prickly sida, respectively. Weeds that emerged with soybeans reduced yields 1,010 kg/ha. Weeds planted 10 days later reduced yields 480 kg/ha, but weeds planted 20 to 40 days after soybeans did not significantly reduced yield. Soybean yields were reduced regardless of weed placement in or between soybean rows. Weed competition reduced numbers of soybean pods per plant more than other soybean-yield components.
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Claims 8
Claim · model-written summary
Velvetleaf reduced soybean seed yield by 720 kg/ha.
- Taxon
- Soybeans
Glycine maxt0 - Treatment
- velvetleafe0
- Interactor
- velvetleaf
Abutilon theophrastie0weedt0 - Outcome
- Soybean seed yieldse0
- Direction
- reducede0
- Value
- 720e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean seed yields were reduced 720, 250, and 230 kg/ha by velvetleaf, Venice mallow, and prickly sida, respectively”
t0“Velvetleaf, Prickly Sida, and Venice Mallow in Soybeans”
t1“Velvetleaf, Prickly Sida, and Venice Mallow in Soybeans”
Claim · model-written summary
Venice mallow reduced soybean seed yield by 250 kg/ha.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- Venice mallowe0
- Interactor
- Venice mallow
Hibiscus trionume0weedt0 - Outcome
- Soybean seed yieldse0
- Direction
- reducede0
- Value
- 250e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean seed yields were reduced 720, 250, and 230 kg/ha by velvetleaf, Venice mallow, and prickly sida, respectively”
t0“Velvetleaf, Prickly Sida, and Venice Mallow in Soybeans”
t1“Velvetleaf, Prickly Sida, and Venice Mallow in Soybeans”
Claim · model-written summary
Prickly sida reduced soybean seed yield by 230 kg/ha.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- prickly sidae0
- Outcome
- Soybean seed yieldse0
- Direction
- reducede0
- Value
- 230 kg/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean seed yields were reduced 720, 250, and 230 kg/ha by velvetleaf, Venice mallow, and prickly sida, respectively”
t0“Velvetleaf, Prickly Sida, and Venice Mallow in Soybeans”
t1“Velvetleaf, Prickly Sida, and Venice Mallow in Soybeans”
Claim · model-written summary
Weeds emerging with soybeans reduced yield by 1,010 kg/ha.
- Taxon
- soybeansGlycine maxe0
- Treatment
- Weeds that emerged with soybeanse0
- Outcome
- yieldse0
- Direction
- reducede0
- Value
- 1,010 kg/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weeds that emerged with soybeans reduced yields 1,010 kg/ha”
t0“Velvetleaf, Prickly Sida, and Venice Mallow in Soybeans”
t1“Velvetleaf, Prickly Sida, and Venice Mallow in Soybeans”
Claim · model-written summary
Weeds planted ten days after soybeans reduced yield by 480 kg/ha.
- Taxon
- soybeansGlycine maxt0
- Treatment
- Weeds planted 10 days latere0
- Outcome
- yieldse0
- Direction
- reducede0
- Value
- 480 kg/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weeds planted 10 days later reduced yields 480 kg/ha”
t0“Velvetleaf, Prickly Sida, and Venice Mallow in Soybeans”
t1“Velvetleaf, Prickly Sida, and Venice Mallow in Soybeans”
Claim · model-written summary
Weeds planted 20 to 40 days later did not significantly reduce soybean yield.
- Taxon
- soybeansGlycine maxe0
- Treatment
- weeds planted 20 to 40 days after soybeanse0
- Outcome
- yielde0
- Direction
- did not significantly reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“weeds planted 20 to 40 days after soybeans did not significantly reduced yield”
t0“Velvetleaf, Prickly Sida, and Venice Mallow in Soybeans”
t1“Velvetleaf, Prickly Sida, and Venice Mallow in Soybeans”
Claim · model-written summary
Soybean yield fell regardless of whether weeds were in or between rows.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- weed placement in or between soybean rowse0
- Outcome
- Soybean yieldse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean yields were reduced regardless of weed placement in or between soybean rows”
t0“Velvetleaf, Prickly Sida, and Venice Mallow in Soybeans”
t1“Velvetleaf, Prickly Sida, and Venice Mallow in Soybeans”
Claim · model-written summary
Weed competition reduced soybean pod numbers more than other yield components.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Weed competitione0
- Outcome
- numbers of soybean pods per plante0
- Direction
- reducede0
- Comparator
- other soybean-yield componentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weed competition reduced numbers of soybean pods per plant more than other soybean-yield components”
t0“Velvetleaf, Prickly Sida, and Venice Mallow in Soybeans”
t1“Velvetleaf, Prickly Sida, and Venice Mallow in Soybeans”
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 →Hibiscus trionum · yield · Glycine max (soybean)Results agree
1 paper in the same direction as this paper
- negative
competition · yield · Glycine max (soybean)Results differ
42 papers in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- negative
43 papers more in this group
See all 47 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.