Paper · 1991 · Weed Technology

Economics of Johnsongrass (Sorghum halepense) Control in Soybeans (Glycine max)

William G. Johnson; Robert E. Frans; Lucas D. Parsch

5
claims
12
verbatim quotes
6
citations
2
research areas
—
Not open access

Abstract

Field trials were conducted from 1986 to 1988 at Clarkedale, AR, to evaluate selective POST grass herbicides for johnsongrass control in soybeans. Herbicide treatments were trifluralin PPI followed by single and sequential POST applications of fenoxaprop, fluazifop, quizalofop, or sethoxydim. In 1986, sequential applications of sethoxydim and fenoxaprop controlled more johnsongrass 4 WAT than single treatments. In 1987 and 1988, all herbicides except fenoxaprop controlled more than 79% of johnsongrass. The number of johnsongrass stems was reduced by cultural practices and herbicides after 2 yr. The lowest cost of control and the highest average net return over the 3-yr period was obtained with quizalofop.

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Claims 5

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Sequential applications of sethoxydim and fenoxaprop controlled more johnsongrass at 4 weeks after treatment than single treatments in 1986.

Taxon
soybeansGlycine maxe1
Treatment
sequential applications of sethoxydim and fenoxaprope3
Interactor
johnsongrassSorghum halepensee3weed
Outcome
johnsongrasse3
Direction
controlled moree3
Qualifier
4 WATe3
Comparator
single treatmentse3
Setting
Clarkedale, ARe2

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗
Sorghum halepense
Sorghum halepense · InteractorMatt Lavin from Bozeman, Montana, USA · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e1

“to evaluate selective POST grass herbicides for johnsongrass control in soybeans”

✓ located verbatim in the source · abstract, characters 65–145 · show in text ↑
e2

“Field trials were conducted from 1986 to 1988 at Clarkedale, AR”

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

“In 1986, sequential applications of sethoxydim and fenoxaprop controlled more johnsongrass 4 WAT than single treatments”

✓ located verbatim in the source · abstract, characters 294–413 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

In 1987 and 1988, all herbicides except fenoxaprop controlled more than 79% of johnsongrass in soybeans.

Taxon
soybeansGlycine maxe1
Treatment
all herbicides except fenoxaprope4
Interactor
johnsongrassSorghum halepensee4weed
Outcome
johnsongrasse4
Direction
controlled more thane4
Value
79%e4
Comparator
fenoxaprope4
Setting
Clarkedale, ARe2

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗
Sorghum halepense
Sorghum halepense · InteractorMatt Lavin from Bozeman, Montana, USA · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e1

“to evaluate selective POST grass herbicides for johnsongrass control in soybeans”

✓ located verbatim in the source · abstract, characters 65–145 · show in text ↑
e2

“Field trials were conducted from 1986 to 1988 at Clarkedale, AR”

✓ located verbatim in the source · abstract, characters 0–63 · show in text ↑
e4

“In 1987 and 1988, all herbicides except fenoxaprop controlled more than 79% of johnsongrass”

✓ located verbatim in the source · abstract, characters 415–506 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Cultural practices and herbicides reduced the number of johnsongrass stems after 2 years in soybeans.

Taxon
soybeansGlycine maxe1
Treatment
cultural practices and herbicidese5
Interactor
johnsongrassSorghum halepensee5weed
Outcome
number of johnsongrass stemse5
Direction
reducede5
Qualifier
after 2 yre5

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗
Sorghum halepense
Sorghum halepense · InteractorMatt Lavin from Bozeman, Montana, USA · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e1

“to evaluate selective POST grass herbicides for johnsongrass control in soybeans”

✓ located verbatim in the source · abstract, characters 65–145 · show in text ↑
e5

“The number of johnsongrass stems was reduced by cultural practices and herbicides after 2 yr”

✓ located verbatim in the source · abstract, characters 508–600 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Quizalofop gave the lowest cost of johnsongrass control over the 3-year period in soybeans.

Taxon
soybeansGlycine maxe1
Treatment
quizalofope6
Outcome
cost of controle6
Direction
loweste6
Qualifier
3-yr periode6

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e1

“to evaluate selective POST grass herbicides for johnsongrass control in soybeans”

✓ located verbatim in the source · abstract, characters 65–145 · show in text ↑
e6

“The lowest cost of control and the highest average net return over the 3-yr period was obtained with quizalofop”

✓ located verbatim in the source · abstract, characters 602–713 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Quizalofop gave the highest average net return over the 3-year period in soybeans.

Taxon
soybeansGlycine maxe1
Treatment
quizalofope6
Outcome
average net returne6
Direction
higheste6
Qualifier
over the 3-yr periode6

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e1

“to evaluate selective POST grass herbicides for johnsongrass control in soybeans”

✓ located verbatim in the source · abstract, characters 65–145 · show in text ↑
e6

“The lowest cost of control and the highest average net return over the 3-yr period was obtained with quizalofop”

✓ located verbatim in the source · abstract, characters 602–713 · show in text ↑

Sethoxydim · Sorghum halepense · Glycine max (soybean)Positive and negative results

6 papers: 5 positive, 1 negative or no effect

4 papers in the same direction as this paper · 1 in the opposite direction

  1. negative
  2. positive
  3. positive

2 papers more in this group

See all 6 papers →

quizalofop · control · Glycine max (soybean)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 papers →

quizalofop · yield · Glycine max (soybean)Results agree

5 papers: 5 positive, 0 negative or no effect

4 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

1 paper more in this group

See all 5 papers →

herbicide · Sorghum halepense · Glycine max (soybean)Positive and negative results

12 papers: 9 positive, 3 negative or no effect

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

  1. negative
  2. negative
  3. negative

8 papers more in this group

See all 12 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.