Paper · 2012 · Crop Management

Influence of Spring Herbicide Applications on Winter Weed Emergence in Corn and Soybean Production Systems

Gurinderbir S. Chahal; Vince Davis; William G. Johnson

5
claims
8
verbatim quotes
0
citations
2
research areas
—
Not open access

Abstract

Experiments were conducted in Indiana to assess the densities of winter weed species at 180 and 310 days when the soil‐applied residual herbicides were applied in combination with glyphosate in corn ( Zea mays ) and soybean ( Glycine max ) production systems. Weed densities were higher at 180 days compared to 310 days, irrespective of the weed species at SEPAC site. In corn systems, additional application of atrazine did not decrease the weed densities at both sites. However, in few instances, cloransulam‐methyl reduced the shepherd's purse and smallflower buttercup densities as compared to non‐treated check in soybean systems. In most instances, the residual herbicides applied as PRE or POST did not decrease the weed densities significantly at 180 days or at 310 days after application compared to systems that did not utilize residual herbicides.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 5

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Winter weed densities were higher at 180 than 310 days at SEPAC.

Taxon
corn ( Zea mays ) and soybean ( Glycine max )Glycine maxZea mayse1
Interactor
Weede0weed
Outcome
Weed densitiese0
Direction
highere0
Value
180 dayse0
Comparator
310 dayse0
Setting
SEPAC sitee0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗
Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Weed densities were higher at 180 days compared to 310 days, irrespective of the weed species at SEPAC site.”

✓ located verbatim in the source · abstract, characters 260–368 · show in text ↑
e1

“corn ( Zea mays ) and soybean ( Glycine max ) production systems”

✓ located verbatim in the source · abstract, characters 194–258 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Additional atrazine did not decrease winter weed densities in corn systems at either site.

Treatment
additional application of atrazinee0
Interactor
weede0weed
Outcome
weed densitiese0
Direction
did not decreasee0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“In corn systems, additional application of atrazine did not decrease the weed densities at both sites.”

✓ located verbatim in the source · abstract, characters 369–471 · show in text ↑
e1

“corn ( Zea mays ) and soybean ( Glycine max ) production systems”

✓ located verbatim in the source · abstract, characters 194–258 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Cloransulam-methyl reduced shepherd’s purse density in some soybean instances relative to untreated checks.

Taxon
soybeanGlycine maxe0
Treatment
cloransulam‐methyle0
Interactor
shepherd's purseCapsella bursa-pastorise0weed
Outcome
shepherd's pursee0
Direction
reducede0
Qualifier
in few instancese0
Comparator
non‐treated checke0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗
Capsella bursa-pastoris
Capsella bursa-pastoris · InteractorSaltySemanticSchmuck · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“in few instances, cloransulam‐methyl reduced the shepherd's purse and smallflower buttercup densities as compared to non‐treated check in soybean systems.”

✓ located verbatim in the source · abstract, characters 481–635 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Cloransulam-methyl reduced smallflower buttercup density in some soybean instances relative to untreated checks.

Taxon
soybeanGlycine maxe0
Treatment
cloransulam‐methyle0
Interactor
smallflower buttercupe0weed
Outcome
smallflower buttercup densitiese0
Direction
reducede0
Qualifier
in few instancese0
Comparator
non‐treated checke0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“in few instances, cloransulam‐methyl reduced the shepherd's purse and smallflower buttercup densities as compared to non‐treated check in soybean systems.”

✓ located verbatim in the source · abstract, characters 481–635 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Residual herbicides applied before or after emergence usually did not significantly reduce winter weed densities at 180 or 310 days.

Taxon
corn ( Zea mays ) and soybean ( Glycine max )Glycine maxZea mayse1
Treatment
residual herbicides applied as PRE or POSTe0
Interactor
weede0weed
Outcome
weed densitiese0
Direction
did not decreasee0
Qualifier
at 180 days or at 310 days after applicatione0
Comparator
systems that did not utilize residual herbicidese0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗
Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“In most instances, the residual herbicides applied as PRE or POST did not decrease the weed densities significantly at 180 days or at 310 days after application compared to systems that did not utilize residual herbicides.”

✓ located verbatim in the source · abstract, characters 636–858 · show in text ↑
e1

“corn ( Zea mays ) and soybean ( Glycine max ) production systems”

✓ located verbatim in the source · abstract, characters 194–258 · show in text ↑

atrazine · weed · Zea mays (maize)Results differ

202 papers: 197 positive, 5 negative or no effect

4 papers in the same direction as this paper · 197 in the opposite direction

  1. positive
  2. positive
  3. positive

198 papers more in this group

See all 202 papers →

herbicide · weed · Glycine max (soybean)Positive and negative results

297 papers: 258 positive, 39 negative or no effect

38 papers in the same direction as this paper · 258 reporting no difference from an alternative

  1. positive
  2. positive
  3. no effect

293 papers more in this group

See all 297 papers →

herbicide · weed · Zea mays (maize)Positive and negative results

406 papers: 360 positive, 46 negative or no effect

45 papers in the same direction as this paper · 360 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

402 papers more in this group

See all 406 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.