Intervention effectmodel-written summary

Fertilizer N did not significantly reduce ten-week clover production when applied in autumn or early winter.

A claim from The effects of strategic nitrogen fertiliser application during the cool season on perennial ryegrass-white clover pastures in the Western Cape Province 3. Clover content · 2006

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Fertilizer N did not significantly reduce ten-week clover production when applied in autumn or early winter.

Taxon
white cloverTrifolium repenst0
Treatment
Fertiliser Ne0
Outcome
total clover OM productione0
Direction
did not reducee0
Qualifier
when applied in autumn and early wintere0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue

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

Trifolium repens
Trifolium repens · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Fertiliser N did not reduce (P>0.05)total clover OM production (kg clover ha-1 ) over 10 weeks when applied in autumn and early winter.”

✓ located verbatim in the source · abstract, characters 927–1062
t0

“white clover”

✓ located verbatim in the source · title, characters 102–114

Title

The effects of strategic nitrogen fertiliser application during the cool season on perennial ryegrass-white clover pastures in the Western Cape Province 3. Clover content

J. Labuschagne; M. B. Hardy; G. A. Agenbag South African Journal of Plant and Soil 2006. doi:10.1080/02571862.2006.10634765

Other claims from this paper (7)

Record rev-ca4e4c5c8cb7f52c4016726a00af16b5d0b207b265b7a6c0a0bdc516e8a728ac · schema claims-v0.9 · position 5 in the model’s answer

fertilization · yield · Trifolium repens (white clover)Positive and negative results

27 papers: 20 positive, 7 negative or no effect

6 papers in the same direction as this claim · 20 in the opposite direction

  1. positive
    N fertilization of mixtures increased total yield by almost 9%, a mean response of 18.1 kg total DM per kg N.

    Optimizing legume content and forage yield of mown white clover–Italian ryegrass mixtures through nitrogen fertilization and grass row spacing · 2010

    Opposite direction

  2. positive
    Slurry caused a smaller decrease in fixed nitrogen yield than mineral fertilizer when compared by their effects on ryegrass dry matter yield and nitrogen concentration.

    The effect of nitrogen in cattle slurry and mineral fertilizers on nitrogen fixation by white clover · 1990 · compared with mineral N fertilizer

    Opposite direction

  3. positive
    Nitrogen fertilizer increased pasture herbage dry matter.

    WILD WHITE CLOVER SEED PRODUCTION · 1963

    Opposite direction

  4. positive
    Nitrogen fertilizer advanced the date of adequate spring grazing yield by 2-14 days.

    The effect of the early application of nitrogenous fertilizer and of the time of cutting in spring on the yield of rye-grass/white clover swards · 1966

    Opposite direction

  5. positive
    Mixing the fertiliser through the surface 10 cm was slightly more effective than surface application for shoot production of T. repens, especially in the early years.

    Shoot and root responses to phosphorus by Trifolium ambiguum and Trifolium repens in a montane environment · 1982 · compared with surface application

    Opposite direction

  6. positive
    Fertiliser N application increased total annual pasture production by 25–31%.

    Productivity of white clover cultivars under intensive grazing, as affected by high nitrogen fertiliser application · 1995

    Opposite direction

  7. positive
    Nitrogen enhanced the decline in grass tiller density during March to June fallow.

    Influence of the timing and duration of pastoral fallowing and nitrogen fertiliser on pasture and white clover ( Trifolium repens ) growth in hill country · 1998

    Opposite direction

  8. positive
    White clover yield rose significantly at seven sites after phosphorus topdressing.

    Effect of topdressed phosphorus fertilizer on established white clover based pastures in south-east Queensland. 1. Prediction of yield responses using soil tests · 1979

    Opposite direction

18 papers more in this group

See all 27 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.