Paper · 1996 · Weed Science

Weed Control With Reduced Rates of Four Soil Applied Soybean Herbicides

Kilwake C. Muyonga; Michael S. Defelice; Barry D. Sims

4
claims
4
verbatim quotes
26
citations
2
research areas
—
Not open access

Abstract

Field studies were conducted at two locations in Missouri in 1990 and 1991 to evaluate control of velvetleaf, ivyleaf morningglory, and cocklebur in soybean with label rates (1×) or reduced rates (0.5×) of four PPI herbicides followed with or without cultivation and POST application of one fourth (0.25×) the label rate of imazethapyr. Weed control and soybean yield with the 0.5× rate of preplant clomazone, imazaquin, metribuzin, and metribuzin + chlorimuron followed by either cultivation or imazethapyr POST was equivalent to a 1× rate of the PPI herbicides followed by either cultivation or imazethapyr. Weed control and soybean yield with the 0.5× rates of the PPI herbicides without cultivation or POST imazethapyr were lower than with 1× rates of PPI herbicides.

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Claims 4

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

With cultivation or postemergence imazethapyr, half rate preplant herbicides gave weed control equivalent to full rate herbicides.

Taxon
soybeanGlycine maxe0
Treatment
0.5× rate of preplant clomazone, imazaquin, metribuzin, and metribuzin + chlorimuron followed by either cultivation or imazethapyr POSTe0
Outcome
Weed controle0
Direction
equivalente0
Comparator
1× rate of the PPI herbicides followed by either cultivation or imazethapyre0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Weed control and soybean yield with the 0.5× rate of preplant clomazone, imazaquin, metribuzin, and metribuzin + chlorimuron followed by either cultivation or imazethapyr POST was equivalent to a 1× rate of the PPI herbicides followed by either cultivation or imazethapyr”

✓ located verbatim in the source · abstract, characters 337–608 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

With cultivation or postemergence imazethapyr, half rate preplant herbicides gave soybean yield equivalent to full rate herbicides.

Taxon
soybeanGlycine maxe0
Treatment
0.5× rate of preplant clomazone, imazaquin, metribuzin, and metribuzin + chlorimuron followed by either cultivation or imazethapyr POSTe0
Outcome
soybean yielde0
Direction
equivalente0
Comparator
1× rate of the PPI herbicides followed by either cultivation or imazethapyre0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Weed control and soybean yield with the 0.5× rate of preplant clomazone, imazaquin, metribuzin, and metribuzin + chlorimuron followed by either cultivation or imazethapyr POST was equivalent to a 1× rate of the PPI herbicides followed by either cultivation or imazethapyr”

✓ located verbatim in the source · abstract, characters 337–608 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Without cultivation or postemergence imazethapyr, half rates gave lower weed control than full rates.

Taxon
soybeanGlycine maxe0
Treatment
0.5× rates of the PPI herbicides without cultivation or POST imazethapyre0
Outcome
Weed controle0
Direction
lowere0
Comparator
1× rates of PPI herbicidese0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Weed control and soybean yield with the 0.5× rates of the PPI herbicides without cultivation or POST imazethapyr were lower than with 1× rates of PPI herbicides”

✓ located verbatim in the source · abstract, characters 610–770 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Without cultivation or postemergence imazethapyr, half rates gave lower soybean yield than full rates.

Taxon
soybeanGlycine maxe0
Treatment
0.5× rates of the PPI herbicides without cultivation or POST imazethapyre0
Outcome
soybean yielde0
Direction
lowere0
Comparator
1× rates of PPI herbicidese0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Weed control and soybean yield with the 0.5× rates of the PPI herbicides without cultivation or POST imazethapyr were lower than with 1× rates of PPI herbicides”

✓ located verbatim in the source · abstract, characters 610–770 · show in text ↑

imazaquin · yield · Glycine max (soybean)Results differ

15 papers: 9 positive, 6 negative or no effect

5 papers in the same direction as this paper · 9 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

11 papers more in this group

See all 15 papers →

chlorimuron · yield · Glycine max (soybean)Results differ

33 papers: 16 positive, 17 negative or no effect

16 papers in the same direction as this paper · 16 reporting no difference from an alternative

  1. negative
  2. no effect
  3. positive

29 papers more in this group

See all 33 papers →

metribuzin · yield · Glycine max (soybean)Results differ

61 papers: 37 positive, 24 negative or no effect

23 papers in the same direction as this paper · 37 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

57 papers more in this group

See all 61 papers →

Imazethapyr · yield · Glycine max (soybean)Results differ

85 papers: 66 positive, 19 negative or no effect

18 papers in the same direction as this paper · 66 in the opposite direction

  1. negative
  2. positive
  3. positive

81 papers more in this group

See all 85 papers →

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

8 papers: 6 positive, 2 negative or no effect

1 paper in the same direction as this paper · 6 reporting no difference from an alternative

  1. positive
    Half-rate herbicide mixture controlled weeds as well as labeled rates.

    Weed Control with Clomazone Alone and with Other Herbicides · 1989 · compared with the mixture at labeled rates

    No difference from an alternative

  2. positive
  3. positive

4 papers more in this group

See all 8 papers →

clomazone · yield · Glycine max (soybean)Positive and negative results

10 papers: 6 positive, 4 negative or no effect

3 papers in the same direction as this paper · 6 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

6 papers more in this group

See all 10 papers →

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

12 papers: 9 positive, 3 negative or no effect

2 papers in the same direction as this paper · 9 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

8 papers more in this group

See all 12 papers →

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

21 papers: 18 positive, 3 negative or no effect

2 papers in the same direction as this paper · 18 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

17 papers more in this group

See all 21 papers →

8 of 12 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.