Intervention effectmodel-written summary

Narrow drill rows with high seed rates produced the highest winter wheat yields.

A claim from Organic winter wheat: optimising planting. · 2008

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Narrow drill rows with high seed rates produced the highest winter wheat yields.

Taxon
winter wheatTriticum aestivumt0
Treatment
narrow row drill arrangements with high seed ratese0
Outcome
yieldse0
Direction
higheste0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

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

e0

“narrow row drill arrangements with high seed rates result in the highest yields”

✓ located verbatim in the source · abstract, characters 409–488
t0

“Organic winter wheat”

✓ located verbatim in the source · title, characters 0–20

Title

Organic winter wheat: optimising planting.

Zoë Haigh; J. A. Baddeley; H. E. Boyd; et al. Organic Eprints (International Centre for Research in Organic Food Systems, and Research Institute of Organic Agriculture) 2008

Other claims from this paper (5)

Record rev-666dbfb8e4e87fd294ce0d9fec8db6bad862afbb39080b5891649e2c598c6bf8 · schema claims-v0.9 · position 1 in the model’s answer

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

176 papers: 129 positive, 47 negative or no effect

128 papers in the same direction as this claim · 35 in the opposite direction · 12 reporting no difference from an alternative

  1. no effect
    With wild mustard, broadcast nitrogen never improved wheat yields over unfertilized control.

    Fertilizer application method affects nitrogen uptake in weeds and wheat · 2002 · compared with unfertilized control

    Opposite direction

  2. negative
    In the third and fourth years of the transition, yields were reduced in direct-seeded plots.

    Root Diseases of Wheat and Barley During the Transition from Conventional Tillage to Direct Seeding · 2006

    Opposite direction

  3. negative
    Direct drilling with retained stubble gave lower yields than the comparison treatments in a wet season.

    Tillage practices and the growth and yield of wheat in southern New South Wales: Lockhart, in a 450 mm rainfall region · 1986

    Opposite direction

  4. negative
    Spring broadcast of urea and AN gave negligible grain yield response in one trial.

    No‐till Winter Wheat Production on the Canadian Prairies: Placement of Urea and Ammonium Nitrate Fertilizers · 1989

    Opposite direction

  5. negative
    Direct drilling lowered grain yields when no fertilizer was applied.

    Effects of Direct Drilling on the Phosphorus Uptake and Fertilizer Requirements of Wheat · 1987

    Opposite direction

  6. negative
    Wheat yield was reduced by 23 and 16% when soybean was intercropped in the drilled and skiprow patterns, respectively.

    Intercropping Soybean into Standing Green Wheat1 · 1987 · compared with conventional

    Opposite direction

  7. negative
    Direct drilling reduced spring wheat grain yield by 12.8% relative to deep ploughing.

    Influence of Different Intensities of Tillage on Physiological Characteristics and Productivity of Crop-Rotation Plants · 2022 · compared with deep ploughing

    Opposite direction

  8. negative
    Delaying broadcast nitrogen lowered grain yield and grain-protein yield.

    No‐till Winter Wheat Production: Response to Spring Applied Nitrogen Fertilizer Form and Placement · 1991

    Opposite direction

167 papers more in this group

See all 176 papers →

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

498 papers: 376 positive, 122 negative or no effect

375 papers in the same direction as this claim · 115 in the opposite direction · 7 reporting no difference from an alternative

  1. no effect
    Sowing density did not affect yield in 2000.

    Field evaluation of early vigour for genetic improvement of grain yield in wheat · 2002

    Opposite direction

  2. no effect
    Spacing changes did not significantly affect grain yield.

    Genotype, sowing date and plant spacing influence on high-yielding irrigated wheat in southern New South Wales. II. Growth, yield and nitrogen use · 1990

    Opposite direction

  3. no effect
    Nitrogen level, N timing and seeding rate had no significant effect on spring wheat grain yield across environments.

    Seeding Rate and Nitrogen Management Effects on Spring Wheat Yield and Yield Components · 2007

    Opposite direction

  4. negative
    Lower seeding rates reduced grain yield by 0.8 Mg ha −1.

    Seeding Rate and Genotype Effect on Agronomic Performance and End‐Use Quality of Winter Wheat · 2002

    Opposite direction

  5. no effect
    Increasing sowing density from 50 to 100 kg/ha had little influence on yield or yield-related characteristics of restricted and freely tillering lines.

    Agronomic evaluation of a tiller inhibition gene (tin) in wheat. I. Effect on yield, yield components, and grain protein · 2005

    Opposite direction

  6. negative
    Increasing seeding rate at wide spacing could not achieve the narrow spacing yield gain.

    Hard Red Spring Wheat Response to Row Spacing, Seeding Rate, and Nitrogen · 2008

    Opposite direction

  7. negative
    Lower seeding rates decreased wheat grain yield by 0.8 Mg ha−1.

    Seeding Rate and Genotype Effect on Agronomic Performance and End-Use Quality of Winter Wheat · 2002

    Opposite direction

  8. negative
    Wheat at 240 mm spacing yielded less than at 120 mm.

    Effects of inter‐row hoeing and fertilizer placement on weed growth and yield of winter wheat · 2003 · compared with 120 mm

    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.