Paper · 1981 · Weed Science

Weed Control in Established Dryland Alfalfa (Medicago sativa)

Robert G. Wilson

5
claims
8
verbatim quotes
19
citations
3
research areas
—
Not open access

Abstract

Fall-applied herbicides were evaluated in field studies conducted in 1978 through 1980 in western Nebraska for selective weed control in nonirrigated, established alfalfa ( Medicago sativa L. ‘Ranger’). All herbicides effectively controlled downy brome ( Bromus tectorum L.). Broadleaf weeds were differentially controlled by the herbicides tested. All herbicide treatments increased forage production and protein content over that produced in the untreated check. Increasing the rate of metribuzin [4-amino-6- tert -butyl-3-(methylthio)- as -triazin-5(4 H )-one] and simazine [2-chloro-4,6-bis(ethylamino)- s -triazine] above amounts needed for effective weed control caused an increase in the protein content of alfalfa forage above that resulting from normal use rates.

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Claims 5

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

All herbicide treatments increased forage production and protein content over the untreated check in alfalfa.

Taxon
alfalfaMedicago sativae1
Material
Rangere1
Treatment
herbicide treatmentse4
Outcome
forage production and protein contente4
Direction
increasede4
Comparator
untreated checke4
Setting
western Nebraskae1

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

e1

“Fall-applied herbicides were evaluated in field studies conducted in 1978 through 1980 in western Nebraska for selective weed control in nonirrigated, established alfalfa ( Medicago sativa L. ‘Ranger’)”

✓ located verbatim in the source · abstract, characters 0–201 · show in text ↑
e4

“All herbicide treatments increased forage production and protein content over that produced in the untreated check”

✓ located verbatim in the source · abstract, characters 349–463 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

All herbicides effectively controlled downy brome in alfalfa.

Taxon
alfalfaMedicago sativae1
Treatment
herbicidese2
Interactor
downy bromeBromus tectorume2weed
Outcome
controlled downy bromee2

Not reportedComparatorDirection

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗
Bromus tectorum
Bromus tectorum · InteractorAnRo0002 · CC0 · Wikimedia Commons ↗

Verbatim

e1

“Fall-applied herbicides were evaluated in field studies conducted in 1978 through 1980 in western Nebraska for selective weed control in nonirrigated, established alfalfa ( Medicago sativa L. ‘Ranger’)”

✓ located verbatim in the source · abstract, characters 0–201 · show in text ↑
e2

“All herbicides effectively controlled downy brome ( Bromus tectorum L.)”

✓ located verbatim in the source · abstract, characters 203–274 · show in text ↑
Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

The herbicides tested controlled broadleaf weeds differentially in alfalfa.

Taxon
alfalfaMedicago sativae1
Treatment
herbicidese3
Interactor
Broadleaf weedse3weed
Outcome
differentially controllede3

Not reportedComparatorDirection

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

e1

“Fall-applied herbicides were evaluated in field studies conducted in 1978 through 1980 in western Nebraska for selective weed control in nonirrigated, established alfalfa ( Medicago sativa L. ‘Ranger’)”

✓ located verbatim in the source · abstract, characters 0–201 · show in text ↑
e3

“Broadleaf weeds were differentially controlled by the herbicides tested”

✓ located verbatim in the source · abstract, characters 276–347 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Raising the metribuzin rate above amounts needed for weed control increased alfalfa forage protein content above the normal use rate.

Taxon
alfalfaMedicago sativae5
Treatment
metribuzine5
Outcome
protein contente5
Direction
increasee5
Qualifier
above amounts needed for effective weed controle5
Comparator
normal use ratese5

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

e5

“Increasing the rate of metribuzin [4-amino-6- tert -butyl-3-(methylthio)- as -triazin-5(4 H )-one] and simazine [2-chloro-4,6-bis(ethylamino)- s -triazine] above amounts needed for effective weed control caused an increase in the protein content of alfalfa forage above that resulting from normal use rates”

✓ located verbatim in the source · abstract, characters 465–771 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Raising the simazine rate above amounts needed for weed control increased alfalfa forage protein content above the normal use rate.

Taxon
alfalfaMedicago sativae5
Treatment
simazinee5
Outcome
protein contente5
Direction
increasee5
Qualifier
above amounts needed for effective weed controle5
Comparator
normal use ratese5

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

e5

“Increasing the rate of metribuzin [4-amino-6- tert -butyl-3-(methylthio)- as -triazin-5(4 H )-one] and simazine [2-chloro-4,6-bis(ethylamino)- s -triazine] above amounts needed for effective weed control caused an increase in the protein content of alfalfa forage above that resulting from normal use rates”

✓ located verbatim in the source · abstract, characters 465–771 · show in text ↑

simazine · quality: protein · Medicago sativa (alfalfa)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 →

herbicide · quality: protein · Medicago sativa (alfalfa)Positive and negative results

7 papers: 4 positive, 3 negative or no effect

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

  1. positive
  2. negative
  3. no effect

3 papers more in this group

See all 7 papers →

herbicide · Bromus tectorum · Medicago sativa (alfalfa)Results agree

3 papers: 3 positive, 0 negative or no effect

2 papers in the same direction as this paper

  1. positive
  2. positive
See all 3 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.