Paper · 1982 · Weed Science

Controlling Volunteer Corn (Zea mays) in Soybeans (Glycine max) with Diclofop and Glyphosate

Robert N. Andersen; J. Harlan Ford; William E. Lueschen

4
claims
9
verbatim quotes
32
citations
2
research areas
—
Not open access

Abstract

We compared diclofop {2-[4-(2,4-dichlorophenoxy)phenoxy] propanoic acid}, as an early over-the-top spray treatment, and glyphosate [ N -(phosphonomethyl)glycine], applied twice in repeated applications with a rope-wick applicator, for control of simulated volunteer corn ( Zea mays L.) planted in clumps at various intervals in rows of soybeans [ Glycine max (L.) Merr.]. Uncontrolled corn at the lowest density (clumps 2.4m apart in the row) reduced soybean yields an average of 31%. Both herbicides were highly effective in controlling corn, but when corn densities were high, diclofop treatments often resulted in greater soybean yields than did glyphosate treatments — presumably because corn interfered with the soybeans for a longer time before glyphosate was applied.

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 4

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Uncontrolled volunteer corn at the lowest density reduced soybean yield by an average of 31%.

Taxon
SoybeansGlycine maxt0
Treatment
Uncontrolled corn at the lowest densitye0
Interactor
cornZea mays subsp. mayse0weed
Outcome
soybean yieldse0
Direction
reducede0
Value
31%e0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗
Zea mays subsp. mays
Zea mays subsp. mays · InteractorDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Controlling Volunteer Corn (Zea mays) in Soybeans (Glycine max)”

✓ located verbatim in the source · title, characters 0–63 · show in text ↑
e0

“Uncontrolled corn at the lowest density (clumps 2.4m apart in the row) reduced soybean yields an average of 31%”

✓ located verbatim in the source · abstract, characters 372–483 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Both herbicides were highly effective in controlling volunteer corn.

Taxon
SoybeansGlycine maxt0
Treatment
Both herbicidese1
Interactor
cornZea mays subsp. mayse1weed
Outcome
controlling corne1

Not reportedComparatorDirection

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗
Zea mays subsp. mays
Zea mays subsp. mays · InteractorDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Controlling Volunteer Corn (Zea mays) in Soybeans (Glycine max)”

✓ located verbatim in the source · title, characters 0–63 · show in text ↑
e1

“Both herbicides were highly effective in controlling corn”

✓ located verbatim in the source · abstract, characters 485–542 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

When corn densities were high, diclofop treatment often gave greater soybean yield than glyphosate treatment.

Taxon
SoybeansGlycine maxt0
Treatment
diclofop treatmentse3
Interactor
cornZea mays subsp. mayse3weed
Outcome
soybean yieldse3
Direction
greatere3
Qualifier
when corn densities were highe3
Comparator
glyphosate treatmentse3

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗
Zea mays subsp. mays
Zea mays subsp. mays · InteractorDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Controlling Volunteer Corn (Zea mays) in Soybeans (Glycine max)”

✓ located verbatim in the source · title, characters 0–63 · show in text ↑
e3

“when corn densities were high, diclofop treatments often resulted in greater soybean yields than did glyphosate treatments”

✓ located verbatim in the source · abstract, characters 548–670 · show in text ↑
Mechanismhypothesisoriginal resultbasis n/a

Claim · model-written summary

Corn interfering with soybeans for longer before glyphosate application presumably explains the higher soybean yields under diclofop.

Taxon
SoybeansGlycine maxt0
Interactor
cornZea mays subsp. mayse4weed
Outcome
soybean yieldse3
Qualifier
corn interfered with the soybeans for a longer time before glyphosate was appliede4

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗
Zea mays subsp. mays
Zea mays subsp. mays · InteractorDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Controlling Volunteer Corn (Zea mays) in Soybeans (Glycine max)”

✓ located verbatim in the source · title, characters 0–63 · show in text ↑
e3

“when corn densities were high, diclofop treatments often resulted in greater soybean yields than did glyphosate treatments”

✓ located verbatim in the source · abstract, characters 548–670 · show in text ↑
e4

“presumably because corn interfered with the soybeans for a longer time before glyphosate was applied”

✓ located verbatim in the source · abstract, characters 673–773 · show in text ↑

Zea mays subsp. mays · yield · Glycine max (soybean)Results differ

70 papers: 48 positive, 22 negative or no effect

21 papers in the same direction as this paper · 48 in the opposite direction

  1. positive
  2. positive
  3. positive

66 papers more in this group

See all 70 papers →

diclofop · Zea mays subsp. mays · Glycine max (soybean)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 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.