Paper · 1989 · Weed Technology

Johnsongrass (Sorghum halepense) and Pitted Morningglory (Ipomoea lacunosa) Control with Imazaquin and Imazethapyr

Dennis G. Riley; David R. Shaw

5
claims
10
verbatim quotes
22
citations
2
research areas
—
Not open access

Abstract

Imazaquin and imazethapyr were applied postemergence to soybeans for control of 8- to 12-leaf rhizome johnsongrass and pitted morningglory in the field. At 8 weeks, johnsongrass control was 70% with 70 g ai/ha imazaquin plus 105 g ai/ha imazethapyr but was no more than 50% with a single application of either herbicide. Imazaquin at 70 g/ha plus imazethapyr at 35 g/ha interacted synergistically to provide 90% pitted morningglory control, while 140 g/ha imazaquin controlled 77%. Imazaquin at 70 g/ha with imazethapyr from 18 to 105 g/ha controlled both weed species equal to or better than that obtained with 140 g/ha imazaquin.

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

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined imazaquin and imazethapyr achieved 70% johnsongrass control at eight weeks.

Taxon
soybeansGlycine maxe1
Treatment
70 g ai/ha imazaquin plus 105 g ai/ha imazethapyre0
Interactor
johnsongrassSorghum halepensee0weed
Outcome
johnsongrass controle0
Value
70%e0
Comparator
single application of either herbicidee0
Setting
fielde1

Not reportedDirection

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

e0

“At 8 weeks, johnsongrass control was 70% with 70 g ai/ha imazaquin plus 105 g ai/ha imazethapyr but was no more than 50% with a single application of either herbicide.”

✓ located verbatim in the source · abstract, characters 153–320 · show in text ↑
e1

“Imazaquin and imazethapyr were applied postemergence to soybeans for control of 8- to 12-leaf rhizome johnsongrass and pitted morningglory in the field.”

✓ located verbatim in the source · abstract, characters 0–152 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

A single application of either herbicide gave no more than 50% johnsongrass control.

Taxon
soybeansGlycine maxe1
Treatment
single application of either herbicidee0
Interactor
johnsongrassSorghum halepensee0weed
Outcome
johnsongrass controle0
Direction
no more thane0
Value
50%e0
Comparator
70 g ai/ha imazaquin plus 105 g ai/ha imazethapyre0

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

e0

“johnsongrass control was 70% with 70 g ai/ha imazaquin plus 105 g ai/ha imazethapyr but was no more than 50% with a single application of either herbicide.”

✓ located verbatim in the source · abstract, characters 165–320 · show in text ↑
e1

“Imazaquin and imazethapyr were applied postemergence to soybeans for control of 8- to 12-leaf rhizome johnsongrass and pitted morningglory in the field.”

✓ located verbatim in the source · abstract, characters 0–152 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined 70 g/ha imazaquin and 35 g/ha imazethapyr synergistically controlled 90% of pitted morningglory.

Taxon
soybeansGlycine maxe1
Treatment
Imazaquin at 70 g/ha plus imazethapyr at 35 g/hae0
Interactor
pitted morningglorye0weed
Outcome
pitted morningglory controle0
Direction
synergisticallye0
Value
90%e0
Comparator
140 g/ha imazaquine0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Imazaquin at 70 g/ha plus imazethapyr at 35 g/ha interacted synergistically to provide 90% pitted morningglory control, while 140 g/ha imazaquin controlled 77%.”

✓ located verbatim in the source · abstract, characters 321–481 · show in text ↑
e1

“Imazaquin and imazethapyr were applied postemergence to soybeans for control of 8- to 12-leaf rhizome johnsongrass and pitted morningglory in the field.”

✓ located verbatim in the source · abstract, characters 0–152 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Imazaquin at 140 g/ha controlled 77% of pitted morningglory.

Taxon
soybeansGlycine maxe1
Treatment
140 g/ha imazaquine0
Interactor
pitted morningglorye0weed
Outcome
pitted morningglorye0
Direction
controllede0
Value
77%e0
Comparator
Imazaquin at 70 g/ha plus imazethapyr at 35 g/hae0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Imazaquin at 70 g/ha plus imazethapyr at 35 g/ha interacted synergistically to provide 90% pitted morningglory control, while 140 g/ha imazaquin controlled 77%.”

✓ located verbatim in the source · abstract, characters 321–481 · show in text ↑
e1

“Imazaquin and imazethapyr were applied postemergence to soybeans for control of 8- to 12-leaf rhizome johnsongrass and pitted morningglory in the field.”

✓ located verbatim in the source · abstract, characters 0–152 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Imazaquin at 70 g/ha with imazethapyr at 18 to 105 g/ha controlled both weeds at least as well as 140 g/ha imazaquin.

Taxon
soybeansGlycine maxe1
Treatment
Imazaquin at 70 g/ha with imazethapyr from 18 to 105 g/hae0
Outcome
both weed speciese0
Direction
equal to or bettere0
Comparator
140 g/ha imazaquine0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Imazaquin at 70 g/ha with imazethapyr from 18 to 105 g/ha controlled both weed species equal to or better than that obtained with 140 g/ha imazaquin.”

✓ located verbatim in the source · abstract, characters 482–631 · show in text ↑
e1

“Imazaquin and imazethapyr were applied postemergence to soybeans for control of 8- to 12-leaf rhizome johnsongrass and pitted morningglory in the field.”

✓ located verbatim in the source · abstract, characters 0–152 · show in text ↑

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

3 papers: 2 positive, 1 negative or no effect

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

  1. positive
  2. negative
See all 3 papers →

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

5 papers: 4 positive, 1 negative or no effect

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

  1. no effect
  2. positive
  3. positive

1 paper more in this group

See all 5 papers →

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

8 papers: 6 positive, 2 negative or no effect

5 papers in the same direction as this paper · 2 reporting no difference from an alternative

  1. no effect
    With cultivation or postemergence imazethapyr, half rate preplant herbicides gave weed control equivalent to full rate herbicides.

    Weed Control With Reduced Rates of Four Soil Applied Soybean Herbicides · 1996 · compared with 1× rate of the PPI herbicides followed by either cultivation or imazethapyr

    No difference from an alternative

  2. no effect
  3. positive

4 papers more in this group

See all 8 papers →

Imazethapyr · control · Glycine max (soybean)Positive and negative results

25 papers: 21 positive, 4 negative or no effect

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

  1. positive
  2. negative
  3. negative

21 papers more in this group

See all 25 papers →

imazaquin · control · Glycine max (soybean)Positive and negative results

25 papers: 21 positive, 4 negative or no effect

20 papers in the same direction as this paper · 3 in the opposite direction · 1 reporting no difference from an alternative

  1. positive
  2. negative
  3. no effect

21 papers more in this group

See all 25 papers →

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

68 papers: 64 positive, 4 negative or no effect

63 papers in the same direction as this paper · 2 in the opposite direction · 2 reporting no difference from an alternative

  1. positive
  2. no effect
  3. no effect

64 papers more in this group

See all 68 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. positive
  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.