Intervention effectmodel-written summary

Early planting increased soybean yield by 311 kg/ha

A claim from Individual and Combined Effects of Planting Date, Seeding Rate, Relative Maturity, and Row Spacing on Soybean Yield · 2021

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Early planting increased soybean yield by 311 kg/ha

Taxon
soybeanGlycine maxt0
Treatment
early PDe2
Outcome
yielde2
Direction
increasee2
Value
311e2

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingQualifier

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Soybean Yield”

✓ located verbatim in the source · title, characters 102–115
e2

“Individual factors of early PD and narrow RS resulted in yield increase of 311 and 266 kg ha−1, respectively”

✓ located verbatim in the source · abstract, characters 588–696

Title

Individual and Combined Effects of Planting Date, Seeding Rate, Relative Maturity, and Row Spacing on Soybean Yield

Peder K. Schmitz; Hans J. Kandel Agronomy 2021. doi:10.3390/agronomy11030605

Other claims from this paper (9)

Record rev-64471babbbb384efeab79465296b100860ba64d408f2cc7ff9dde6f3c7d3327d · schema claims-v0.9 · position 2 in the model’s answer

sowing time · yield · Glycine max (soybean)Positive and negative results

207 papers: 115 positive, 92 negative or no effect

114 papers in the same direction as this claim · 89 in the opposite direction · 3 reporting no difference from an alternative

  1. negative
    Late sowing reduced node number per plant, dry matter production, and cumulative irradiance capture.

    Soybean (Glycine max (L.) Merr.) Yield Reduction due to Late Sowing as a Function of Radiation Interception and Use in a Cool Region of Northern Japan · 2020

    Opposite directionCited by this paper

  2. negative
    Delayed planting reduced soybean grain yield.

    Effects of Planting Date on Two Soybean Cultivars: Seasonal Dry Matter Accumulation and Seed Yield1 · 1985

    Opposite directionCited by this paper

  3. no effect
    Planting date did not affect soybean yield when weed control was good.

    Impact of soybean planting date and row width on weed suppression and yield · 2025

    Opposite directionCites this paper

  4. positive
    Late April or early May planting increased economic return.

    Soybean Seed Yield Response to Planting Date and Seeding Rate in the Upper Midwest · 2008

    Same directionCited by this paper

  5. positive
    Early May planting increased yield by 358 kg ha −1 compared with late May.

    Responses of Canopy Reflectance, Light Interception, and Soybean Seed Yield to Replanting Suboptimal Stands · 2014 · compared with late May

    Same directionCited by this paper

  6. positive
    Cultivar CX232 yielded 7% more with early than late planting on silt loam soil

    Soybean Agronomic Response to Management Systems in the Upper Midwest · 2003 · compared with late planting date

    Same directionCited by this paper

  7. positive
    Early planting produced soybean yield equal to or above later planting, except once.

    Tillage, Row Spacing, and Planting Date Effects on Soybean following Corn or Wheat · 1992 · compared with planted later

    Same directionCited by this paper

  8. negative
    Delayed planting date reduced soybean seed yield by 0.01 to 0.04 Mg ha-1 per week, mainly in northern latitudes.

    Assessing Variation in US Soybean Seed Composition (Protein and Oil) · 2019

    Opposite direction

198 papers more in this group

See all 207 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.