Paper · 1993 · Weed Technology

Effects of Paraquat and Alachlor on Peanut (Arachis hypogaea) Growth, Maturity, and Yield

W. Carroll Johnson; Joseph R. Chamberlin; Timothy B. Brenneman; et al.

9
claims
29
verbatim quotes
15
citations
1
research areas
—
Not open access

Abstract

Studies were conducted in 1988, 1989, and 1992 in Plains, GA to measure effects of paraquat and alachlor on ‘Florunner’ peanut. Peanut treated with paraquat (0.14 kg ai/ha) plus alachlor (3.4 kg ai/ha) applied at vegetative emergence (VE), or paraquat plus alachlor VE followed by paraquat 28 days after emergence (DAE) were compared with a nontreated control. Both herbicide treatments reduced peanut foliage biomass at 65 DAE in 1989 and 1992. Herbicide treatments did not affect foliage biomass 90 DAE in 1988 and 122 DAE in 1989, but paraquat plus alachlor followed by paraquat reduced foliage biomass at 122 DAE in 1992. Pod biomass, measured at 90 and 65 DAE in 1988 and 1992, respectively, was reduced by herbicides. However, pod biomass did not differ among treatments 122 DAE in 1989 and 1992. Percent reflectance from the peanut canopy measured no effects from herbicides in 1988. However, in 1989 and 1992 herbicides applied sequentially reduced peanut canopy development. Peanut treated with a single herbicide and sequentially took longer to mature. Once optimum maturity was reached, peanut yields were not reduced.

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 9

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Both herbicide treatments reduced peanut foliage biomass at 65 DAE in 1989 and 1992 relative to a nontreated control.

Taxon
Arachis hypogaeaArachis hypogaeat0
Treatment
herbicide treatmentse2
Outcome
peanut foliage biomasse2
Direction
reducede2
Qualifier
65 DAE in 1989 and 1992e2
Comparator
nontreated controle1

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

t0

“Peanut (Arachis hypogaea)”

✓ located verbatim in the source · title, characters 36–61 · show in text ↑
e1

“Peanut treated with paraquat (0.14 kg ai/ha) plus alachlor (3.4 kg ai/ha) applied at vegetative emergence (VE), or paraquat plus alachlor VE followed by paraquat 28 days after emergence (DAE) were compared with a nontreated control”

✓ located verbatim in the source · abstract, characters 128–359 · show in text ↑
e2

“Both herbicide treatments reduced peanut foliage biomass at 65 DAE in 1989 and 1992”

✓ located verbatim in the source · abstract, characters 361–444 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Herbicide treatments did not affect peanut foliage biomass at 90 DAE in 1988 or 122 DAE in 1989.

Taxon
Arachis hypogaeaArachis hypogaeat0
Treatment
Herbicide treatmentse3
Outcome
foliage biomasse3
Direction
did not affecte3
Qualifier
90 DAE in 1988 and 122 DAE in 1989e3
Comparator
nontreated controle1

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

t0

“Peanut (Arachis hypogaea)”

✓ located verbatim in the source · title, characters 36–61 · show in text ↑
e1

“Peanut treated with paraquat (0.14 kg ai/ha) plus alachlor (3.4 kg ai/ha) applied at vegetative emergence (VE), or paraquat plus alachlor VE followed by paraquat 28 days after emergence (DAE) were compared with a nontreated control”

✓ located verbatim in the source · abstract, characters 128–359 · show in text ↑
e3

“Herbicide treatments did not affect foliage biomass 90 DAE in 1988 and 122 DAE in 1989”

✓ located verbatim in the source · abstract, characters 446–532 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Paraquat plus alachlor followed by paraquat reduced peanut foliage biomass at 122 DAE in 1992.

Taxon
Arachis hypogaeaArachis hypogaeat0
Treatment
paraquat plus alachlor followed by paraquate4
Outcome
foliage biomasse4
Direction
reducede4
Qualifier
122 DAE in 1992e4
Comparator
nontreated controle1

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

t0

“Peanut (Arachis hypogaea)”

✓ located verbatim in the source · title, characters 36–61 · show in text ↑
e1

“Peanut treated with paraquat (0.14 kg ai/ha) plus alachlor (3.4 kg ai/ha) applied at vegetative emergence (VE), or paraquat plus alachlor VE followed by paraquat 28 days after emergence (DAE) were compared with a nontreated control”

✓ located verbatim in the source · abstract, characters 128–359 · show in text ↑
e4

“but paraquat plus alachlor followed by paraquat reduced foliage biomass at 122 DAE in 1992”

✓ located verbatim in the source · abstract, characters 534–624 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Herbicides reduced peanut pod biomass measured at 90 and 65 DAE in 1988 and 1992.

Taxon
Arachis hypogaeaArachis hypogaeat0
Treatment
herbicidese5
Outcome
Pod biomasse5
Direction
reducede5
Qualifier
90 and 65 DAE in 1988 and 1992, respectivelye5
Comparator
nontreated controle1

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

t0

“Peanut (Arachis hypogaea)”

✓ located verbatim in the source · title, characters 36–61 · show in text ↑
e1

“Peanut treated with paraquat (0.14 kg ai/ha) plus alachlor (3.4 kg ai/ha) applied at vegetative emergence (VE), or paraquat plus alachlor VE followed by paraquat 28 days after emergence (DAE) were compared with a nontreated control”

✓ located verbatim in the source · abstract, characters 128–359 · show in text ↑
e5

“Pod biomass, measured at 90 and 65 DAE in 1988 and 1992, respectively, was reduced by herbicides”

✓ located verbatim in the source · abstract, characters 626–722 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Peanut pod biomass did not differ among herbicide treatments at 122 DAE in 1989 and 1992.

Taxon
Arachis hypogaeaArachis hypogaeat0
Treatment
Herbicide treatmentse3
Outcome
pod biomasse6
Direction
did not differe6
Qualifier
122 DAE in 1989 and 1992e6
Comparator
among treatmentse6

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

t0

“Peanut (Arachis hypogaea)”

✓ located verbatim in the source · title, characters 36–61 · show in text ↑
e3

“Herbicide treatments did not affect foliage biomass 90 DAE in 1988 and 122 DAE in 1989”

✓ located verbatim in the source · abstract, characters 446–532 · show in text ↑
e6

“However, pod biomass did not differ among treatments 122 DAE in 1989 and 1992”

✓ located verbatim in the source · abstract, characters 724–801 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Herbicides had no effect on percent reflectance from the peanut canopy in 1988.

Taxon
Arachis hypogaeaArachis hypogaeat0
Treatment
herbicidese7
Outcome
Percent reflectance from the peanut canopye7
Direction
no effectse7
Qualifier
in 1988e7
Comparator
nontreated controle1

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

t0

“Peanut (Arachis hypogaea)”

✓ located verbatim in the source · title, characters 36–61 · show in text ↑
e1

“Peanut treated with paraquat (0.14 kg ai/ha) plus alachlor (3.4 kg ai/ha) applied at vegetative emergence (VE), or paraquat plus alachlor VE followed by paraquat 28 days after emergence (DAE) were compared with a nontreated control”

✓ located verbatim in the source · abstract, characters 128–359 · show in text ↑
e7

“Percent reflectance from the peanut canopy measured no effects from herbicides in 1988”

✓ located verbatim in the source · abstract, characters 803–889 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Sequentially applied herbicides reduced peanut canopy development in 1989 and 1992.

Taxon
Arachis hypogaeaArachis hypogaeat0
Treatment
herbicides applied sequentiallye3
Outcome
peanut canopy developmente3
Direction
reducede3
Qualifier
1989 and 1992e3
Comparator
nontreated controle1

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

t0

“Peanut (Arachis hypogaea)”

✓ located verbatim in the source · title, characters 36–61 · show in text ↑
e1

“Peanut treated with paraquat (0.14 kg ai/ha) plus alachlor (3.4 kg ai/ha) applied at vegetative emergence (VE), or paraquat plus alachlor VE followed by paraquat 28 days after emergence (DAE) were compared with a nontreated control”

✓ located verbatim in the source · abstract, characters 128–359 · show in text ↑
e3

“However, in 1989 and 1992 herbicides applied sequentially reduced peanut canopy development”

✓ located verbatim in the source · abstract, characters 891–982 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Peanut treated with a single herbicide and sequential herbicide took longer to reach maturity.

Taxon
Arachis hypogaeaArachis hypogaeat0
Treatment
a single herbicidee4
Outcome
maturityt1
Direction
longere4
Comparator
nontreated controle1

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

t0

“Peanut (Arachis hypogaea)”

✓ located verbatim in the source · title, characters 36–61 · show in text ↑
t1

“Growth, Maturity, and Yield”

✓ located verbatim in the source · title, characters 62–89 · show in text ↑
e1

“Peanut treated with paraquat (0.14 kg ai/ha) plus alachlor (3.4 kg ai/ha) applied at vegetative emergence (VE), or paraquat plus alachlor VE followed by paraquat 28 days after emergence (DAE) were compared with a nontreated control”

✓ located verbatim in the source · abstract, characters 128–359 · show in text ↑
e4

“Peanut treated with a single herbicide and sequentially took longer to mature”

✓ located verbatim in the source · abstract, characters 984–1061 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Once optimum maturity was reached, peanut yields were not reduced by the herbicide treatments.

Taxon
Arachis hypogaeaArachis hypogaeat0
Treatment
herbicide treatmentse2
Outcome
peanut yieldse5
Direction
were not reducede5
Qualifier
Once optimum maturity was reachede5
Comparator
nontreated controle1

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

t0

“Peanut (Arachis hypogaea)”

✓ located verbatim in the source · title, characters 36–61 · show in text ↑
e1

“Peanut treated with paraquat (0.14 kg ai/ha) plus alachlor (3.4 kg ai/ha) applied at vegetative emergence (VE), or paraquat plus alachlor VE followed by paraquat 28 days after emergence (DAE) were compared with a nontreated control”

✓ located verbatim in the source · abstract, characters 128–359 · show in text ↑
e2

“Both herbicide treatments reduced peanut foliage biomass at 65 DAE in 1989 and 1992”

✓ located verbatim in the source · abstract, characters 361–444 · show in text ↑
e5

“Once optimum maturity was reached, peanut yields were not reduced”

✓ located verbatim in the source · abstract, characters 1063–1128 · show in text ↑

alachlor · growth · Arachis hypogaea (peanut)Positive and negative results

6 papers: 2 positive, 4 negative or no effect

3 papers in the same direction as this paper · 2 in the opposite direction

  1. positive
  2. positive
  3. negative

2 papers more in this group

See all 6 papers →

paraquat · growth · Arachis hypogaea (peanut)Results agree

7 papers: 0 positive, 7 negative or no effect

6 papers in the same direction as this paper

  1. negative
  2. negative
  3. negative

3 papers more in this group

See all 7 papers →

herbicide · growth · Arachis hypogaea (peanut)Positive and negative results

27 papers: 18 positive, 9 negative or no effect

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

  1. positive
  2. negative
  3. positive

23 papers more in this group

See all 27 papers →

herbicide · yield · Arachis hypogaea (peanut)Positive and negative results

230 papers: 172 positive, 58 negative or no effect

57 papers in the same direction as this paper · 172 in the opposite direction

  1. positive
  2. positive
    Postemergence grass herbicide system with alachlor and dinoseb gave maximum net returns in peanut.

    Economic Assessment of Weed Control Systems for Peanuts (Arachis hypogaea) · 1987 · compared with Traditional weed control systems based on soil-applied herbicides and cultivations

    Opposite directionCited by this paper

  3. positive

226 papers more in this group

See all 230 papers →

herbicide · phenology · Arachis hypogaea (peanut)Results agree

2 papers: 0 positive, 2 negative or no effect

1 paper in the same direction as this paper

  1. negative
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.