Paper · 1993 · Weed Science

Shoot and Root Interference of Common Cocklebur (Xanthium strumarium) and Soybean (Glycine max)

Robert C. Bozsa; Lawrence R. Oliver

6
claims
11
verbatim quotes
18
citations
2
research areas
—
Not open access

Abstract

Field experiments were conducted in 1986 and 1987 to determine the effects of shoot and root interference of common cocklebur and soybean. Plants were grown in porous membrane envelopes. Common cocklebur plants had a longer vegetative growth period than soybean and were twice as tall as soybean at maturity. Soybean root and shoot dry weight and seed yield were reduced by shoot and whole plant (root and shoot) interference of common cocklebur, with whole plant interference giving the greatest reduction. Common cocklebur growth was affected little by soybean interference. Common cocklebur shoot interference alone reduced total soybean seed weight by 48%, the amount caused by common cocklebur whole plant interference.

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Claims 6

Observationobservedoriginal resultmeasured

Claim · model-written summary

Cocklebur had a longer vegetative period than soybean.

Taxon
SoybeanGlycine maxt0
Interactor
Common cocklebure0weed
Outcome
Common cocklebur plants had a longer vegetative growth periode0
Direction
longere0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Common cocklebur plants had a longer vegetative growth period than soybean”

✓ located verbatim in the source · abstract, characters 187–261 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 74–81 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Cocklebur was twice as tall as soybean at maturity.

Taxon
SoybeanGlycine maxt0
Interactor
Common cocklebure0weed
Outcome
twice as talle0
Direction
twice as talle0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Common cocklebur plants had a longer vegetative growth period than soybean and were twice as tall as soybean at maturity”

✓ located verbatim in the source · abstract, characters 187–307 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 74–81 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Shoot and whole-plant cocklebur interference reduced soybean dry weight and seed yield.

Taxon
SoybeanGlycine maxe0
Treatment
shoot and whole plant (root and shoot) interference of common cocklebure0
Interactor
common cocklebure0weed
Outcome
root and shoot dry weight and seed yielde0
Direction
reducede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Soybean root and shoot dry weight and seed yield were reduced by shoot and whole plant (root and shoot) interference of common cocklebur, with whole plant interference giving the greatest reduction”

✓ located verbatim in the source · abstract, characters 309–506 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Whole-plant interference gave the greatest reduction.

Taxon
SoybeanGlycine maxt0
Treatment
whole plant interferencee0
Outcome
greatest reductione0
Direction
greatest reductione0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“whole plant interference giving the greatest reduction”

✓ located verbatim in the source · abstract, characters 452–506 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 74–81 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Soybean interference affected cocklebur growth little.

Taxon
SoybeanGlycine maxt0
Interactor
Common cocklebure0weed
Outcome
Common cocklebur growthe0
Direction
affected littlee0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Common cocklebur growth was affected little by soybean interference”

✓ located verbatim in the source · abstract, characters 508–575 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 74–81 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Cocklebur shoot interference reduced soybean seed weight 48%.

Taxon
SoybeanGlycine maxt0
Treatment
Common cocklebur shoot interference alonee0
Interactor
Common cocklebure0weed
Outcome
total soybean seed weighte0
Direction
reducede0
Value
48%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Common cocklebur shoot interference alone reduced total soybean seed weight by 48%”

✓ located verbatim in the source · abstract, characters 577–659 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 74–81 · show in text ↑

Xanthium strumarium · yield · Glycine max (soybean)Positive and negative results

11 papers: 3 positive, 8 negative or no effect

7 papers in the same direction as this paper · 3 in the opposite direction

  1. positive
  2. negative
  3. positive

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.