Paper · 1977 · Agronomy Journal

Influence of Plant Population on Field Performance of Three Soybean Cultivars1

W. E. Lueschen; D. R. Hicks

9
claims
18
verbatim quotes
58
citations
1
research areas
—
Not open access

Abstract

Abstract Soybean [ Glycine max (L.) Merr.] seeding rates in commercial fields have generally been greater than necessary to obtain maximum seed yield. Because of higher seed costs, we conducted a field study to evaluate the agronomic response of three recently developed soybean cultivars on a clay loam (Aquic Argiudoll) to three plant populations − 171,000, 342,000, and 513,000 plants/ha. Significant yield increases were obtained in only 1 year as a result of higher plant population. Yields in the other years remained constant across populations. Plant height and maturity were not affected by plant population while lodging was increased at higher plant densities. The height above the soil surface of the lowest pod‐bearing node increased as plant density was increased. Numbers of branches, pods, and seeds per plant decreased as population increased. Results presented herein indicate that soybeans have the capacity to compensate for a wide range in plant densities without affecting yield.

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Claims 9

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Higher plant population significantly increased yield in only one year.

Taxon
SoybeanGlycine maxt0
Treatment
plant populatione0
Outcome
yielde0
Direction
increasese0
Qualifier
only 1 yeare0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Three Soybean Cultivars”

✓ located verbatim in the source · title, characters 54–77 · show in text ↑
e0

“Significant yield increases were obtained in only 1 year as a result of higher plant population”

✓ located verbatim in the source · abstract, characters 392–487 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Yield remained constant across plant populations in other years.

Taxon
SoybeanGlycine maxt0
Treatment
populationse0
Outcome
Yieldse0
Direction
remained constante0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Three Soybean Cultivars”

✓ located verbatim in the source · title, characters 54–77 · show in text ↑
e0

“Yields in the other years remained constant across populations”

✓ located verbatim in the source · abstract, characters 489–551 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Plant height was unaffected by population.

Taxon
SoybeanGlycine maxt0
Treatment
plant populatione0
Outcome
Plant heighte0
Direction
not affectede0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Three Soybean Cultivars”

✓ located verbatim in the source · title, characters 54–77 · show in text ↑
e0

“Plant height and maturity were not affected by plant population”

✓ located verbatim in the source · abstract, characters 553–616 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Maturity was unaffected by population.

Taxon
SoybeanGlycine maxt0
Treatment
plant populatione0
Outcome
maturitye0
Direction
not affectede0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Three Soybean Cultivars”

✓ located verbatim in the source · title, characters 54–77 · show in text ↑
e0

“Plant height and maturity were not affected by plant population”

✓ located verbatim in the source · abstract, characters 553–616 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Lodging increased at higher densities.

Taxon
SoybeanGlycine maxt0
Treatment
plant densitiese0
Outcome
lodginge0
Direction
increasede0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Three Soybean Cultivars”

✓ located verbatim in the source · title, characters 54–77 · show in text ↑
e0

“lodging was increased at higher plant densities”

✓ located verbatim in the source · abstract, characters 623–670 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

The lowest pod-bearing node was higher at greater plant density.

Taxon
SoybeanGlycine maxt0
Treatment
plant densitye0
Outcome
height above the soil surface of the lowest pod‐bearing nodee0
Direction
increasede0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Three Soybean Cultivars”

✓ located verbatim in the source · title, characters 54–77 · show in text ↑
e0

“The height above the soil surface of the lowest pod‐bearing node increased as plant density was increased”

✓ located verbatim in the source · abstract, characters 672–777 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Branches per plant decreased with population.

Taxon
SoybeanGlycine maxt0
Outcome
branchese0
Direction
decreasede0

Not reportedTreatmentComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Three Soybean Cultivars”

✓ located verbatim in the source · title, characters 54–77 · show in text ↑
e0

“Numbers of branches, pods, and seeds per plant decreased as population increased”

✓ located verbatim in the source · abstract, characters 779–859 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Pods per plant decreased with population.

Taxon
SoybeanGlycine maxt0
Outcome
podse0
Direction
decreasede0

Not reportedTreatmentComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Three Soybean Cultivars”

✓ located verbatim in the source · title, characters 54–77 · show in text ↑
e0

“Numbers of branches, pods, and seeds per plant decreased as population increased”

✓ located verbatim in the source · abstract, characters 779–859 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Seeds per plant decreased with population.

Taxon
SoybeanGlycine maxt0
Outcome
seeds per plante0
Direction
decreasede0

Not reportedTreatmentComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Three Soybean Cultivars”

✓ located verbatim in the source · title, characters 54–77 · show in text ↑
e0

“Numbers of branches, pods, and seeds per plant decreased as population increased”

✓ located verbatim in the source · abstract, characters 779–859 · show in text ↑

density · phenology · Glycine max (soybean)Positive and negative results

8 papers: 2 positive, 6 negative or no effect

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

  1. positive
  2. positive
  3. no effect

4 papers more in this group

See all 8 papers →

density · growth · Glycine max (soybean)Positive and negative results

82 papers: 59 positive, 23 negative or no effect

22 papers in the same direction as this paper · 59 in the opposite direction

  1. positive
  2. positive
  3. positive

78 papers more in this group

See all 82 papers →

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

305 papers: 207 positive, 98 negative or no effect

206 papers in the same direction as this paper · 94 in the opposite direction · 4 reporting no difference from an alternative

  1. no effect
  2. negative
  3. no effect

301 papers more in this group

See all 305 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.