Intervention effectmodel-written summary

Row spacing had no significant effect on 1000-grain weight or harvest index.

A claim from Effect of Various Seed Rates and Row Spacings on Yield Response of Spring Wheat · 2025

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Row spacing had no significant effect on 1000-grain weight or harvest index.

Treatment
Row spacinge4
Outcome
1000-grain weight and harvest indexe4

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingDirectionValueQualifier

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e4

“Row spacing had significant effect on yield contributing characters and yield of wheat such as plant height, number of spikes m-2, number of spikelets spike-1, number of grains spikeletes-1, number of grains spike-1, grain yield, straw yield, biological yield and except 1000-grain weight and harvest index”

✓ located verbatim in the source · abstract, characters 1325–1631

Title

Effect of Various Seed Rates and Row Spacings on Yield Response of Spring Wheat

Fahmida Farzana Liza; Md. Parvez Anwar; Md. Romij Uddin; et al. Asian Journal of Soil Science and Plant Nutrition 2025. doi:10.9734/ajsspn/2025/v11i1498

Other claims from this paper (11)

Record rev-1012f37bdc4e443c4a2587c73788d8b43ffd912651d0fa23f8c93c76f49bdb14 · schema claims-v0.9 · position 3 in the model’s answer

density · yield · Triticum aestivum (wheat)Positive and negative results

498 papers: 376 positive, 122 negative or no effect

122 papers in the same direction as this claim · 375 in the opposite direction

  1. positive
    Grain yield was maintained despite large reductions in wheat plant density.

    The physiological response of winter wheat to reductions in plant density · 2000

    Opposite direction

  2. positive
    A 160-fold density increase produced a threefold grain yield increase.

    Patterns of tillering and grain production of winter wheat at a wide range of plant densities. · 1978 · compared with 5-800 plants/m2

    Opposite direction

  3. positive
    Increasing seed rate to 525 seeds per square metre increased spikes per square metre.

    Growth and Yield Response of Facultative Wheat to Winter Sowing, Freezing Sowing and Spring Sowing at Different Seeding Rates · 2006

    Opposite direction

  4. positive
    High nitrogen application and planting density significantly increased wheat spike density.

    High nitrogen application rate and planting density reduce wheat grain yield by reducing filling rate of inferior grain in middle spikelets · 2020

    Opposite direction

  5. positive
    PAR interception, above-ground biomass and grain yield of wheat generally followed similar asymptotic increases as seed rate increased.

    Responses of wheat grain yield and quality to seed rate · 2002

    Opposite direction

  6. positive
    Grain yield showed a positive quadratic response as seeding rate increased.

    Tillage and Seeding Rate Effects on Wheat Cultivars: I. Grain Production · 2003

    Opposite direction

  7. positive
    Winter wheat yield loss from ryegrass was smaller at RE 16 than at RE 1 or RE 4.

    Effect of proximity factors on competition between winter wheat (Triticum aestivum) and Italian ryegrass (Lolium multiflorum) · 1998 · compared with RE 1 (square planting) or 4 (close row spacing)

    Opposite direction

  8. positive
    Higher sowing rate increased ear number.

    Effect of sowing date and seed rate on crop development and grain production of winter wheat. · 1977

    Opposite direction

489 papers more in this group

See all 498 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.