Intervention effectmodel-written summary

Spacing variability did not significantly affect leaf number, plant height, or leaf area index.

A claim from Within‐Row Plant Spacing Variability Does Not Affect Corn Yield · 2004

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Spacing variability did not significantly affect leaf number, plant height, or leaf area index.

Treatment
Plant spacing variabilitye0
Outcome
leaf number, plant height, leaf area indexe0
Direction
no significant effecte0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Plant spacing variability also had no significant effect on leaf number, plant height, leaf area index, and harvest index.”

✓ located verbatim in the source · abstract, characters 803–925
t0

“Corn”

✓ located verbatim in the source · title, characters 53–57

Title

Within‐Row Plant Spacing Variability Does Not Affect Corn Yield

Weidong Liu; Matthijs Tollenaar; Greg Stewart; et al. Agronomy Journal 2004. doi:10.2134/agronj2004.2750

Other claims from this paper (3)

Record rev-efb0fdeff9b7e6253b533f93142beed7ab7fe60397218668280e6436de9e1237 · schema claims-v0.9 · position 2 in the model’s answer

density · growth · Zea mays (maize)Positive and negative results

197 papers: 119 positive, 78 negative or no effect

77 papers in the same direction as this claim · 119 in the opposite direction

  1. negative
    Low plant density had a 40% lower leaf area index than high plant density from midvegetative to early grain filling

    Whole‐Plant Physiological and Yield Responses of Maize to Plant Density · 1996 · compared with high plant density

    Same directionCited by this paper

  2. negative
    Higher plant densities reduced LAI, CGR and NAR in maize

    OPTIMIZING YIELD AND MITIGATING BIOTIC STRESS: THE INTERACTIVE EFFECTS OF NITROGEN FERTILIZATION, PLANT DENSITY AND VARIETY OF MAIZE · 2024

    Same directionCites this paper

  3. positive
    Higher corn density or narrower rows significantly increased corn leaf area index.

    Effect of Planting Patterns and Inter-row Cultivation on Competition Between Corn (Zea mays) and Late Emerging Weeds · 1996

    Opposite direction

  4. positive
    Crop growth rate was greater under equidistant spacing early in the season for both corn hybrids.

    A Growth Analysis Comparison of Corn Grown in Conventional and Equidistant Plant Spacing · 1988 · compared with CPS

    Opposite direction

  5. positive
    Higher maize density increased dry matter yield across years.

    Yield and Quality of Forage Maize as Influenced by Hybrid, Planting Date, and Plant Density · 1991

    Opposite direction

  6. positive
    Higher plant density promoted maize N absorption and leaf area index.

    Increased plant density and reduced N rate lead to more grain yield and higher resource utilization in summer maize · 2016

    Opposite direction

  7. positive
    Specific leaf area, leaf area index and leaf area ratio increased with plant density.

    Response of Specific Leaf Area (SLA), Leaf Area Index (LAI) and Leaf Area Ratio (LAR) of Maize (Zea mays L.) To Plant Density, Rate and Timing of Nitrogen Application · 2007

    Opposite direction

  8. positive
    Narrowing rows from 76 to 38 cm raised forage hybrid dry matter yield by 1.1 Mg ha −1.

    Row Width and Plant Density Effect on Corn Forage Hybrids · 2002 · compared with 76

    Opposite direction

188 papers more in this group

See all 197 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.