Intervention effectmodel-written summary

Applying 85 kg N/ha increased yield on fumigated plots by 7 t/ha.

A claim from The effects of soil fumigation and nitrogen fertilizers on nematodes and sugar beet in sandy soils · 1971

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Applying 85 kg N/ha increased yield on fumigated plots by 7 t/ha.

Treatment
Application of 85 kg N/hae0
Outcome
yields on fumigated plotse0
Direction
increasede0
Value
7 t/hae0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingQualifier

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

Beta vulgaris subsp. vulgaris
Beta vulgaris subsp. vulgaris · TaxonQuadell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Application of 85 kg N/ha increased yields on fumigated plots by 7 t/ha”

✓ located verbatim in the source · abstract, characters 324–395
t0

“sugar beet”

✓ located verbatim in the source · title, characters 73–83

Title

The effects of soil fumigation and nitrogen fertilizers on nematodes and sugar beet in sandy soils

D. A. COOKE; A. P. DRAYCOTT Annals of Applied Biology 1971. doi:10.1111/j.1744-7348.1971.tb04678.x

Other claims from this paper (16)

Record rev-0e7b6eca5c3bf2cd93f93690205a331e89c9878696bc7f70e5ff8a058eb4c9b1 · schema claims-v0.9 · position 2 in the model’s answer

nitrogen · yield · Beta vulgaris (beet)Positive and negative results

161 papers: 142 positive, 19 negative or no effect

141 papers in the same direction as this claim · 16 in the opposite direction · 3 reporting no difference from an alternative

  1. positive
    Nitrogen increased sugar yields sharply toward an optimum on most sites.

    Nitrogen requirement of sugar beet grown on mineral soils · 1970

    Same directionCited by this paper

  2. positive
    Nitrogen increased yield most on sandy soils and least on fine silts and peats.

    The effect of soil type and related factors on sugar beet yield · 1977 · compared with fine silts and peats

    Same directionCites this paper

  3. positive
    Higher nitrogen increased beet yield in one field.

    The effect of small doses of nematicides on migratory root‐parasitic nematodes and on the growth of sugar beet and barley in sandy soils · 1970

    Same directionCited by this paper

  4. negative
    Inorganic nitrogen above 112 kg/ha progressively decreased sucrose yields.

    Long‐term Nitrogen Rates and Sources Influence Sugarbeet Yield and Quality1 · 1975

    Opposite direction

  5. no effect
    Nitrogen did not affect root yield in any year.

    The effects on growth, development and yield of sugar beet of extension of the growth period by transplantation · 1966

    Opposite direction

  6. no effect
    N rate did not affect sugar beet yields in either study year.

    Effects of Manure History and Nitrogen Fertilizer Rate on Sugar Beet Production in the Northwest US · 2018

    Opposite direction

  7. negative
    High N rates resulted in lower sugar yields and juice purity in sugar beets.

    Yield and Sugar Production by Sugar Beets as Affected by Leaf Area Variations Induced by Stand Density and Nitrogen Fertilization1 · 1967

    Opposite direction

  8. no effect
    Sugarbeet yield was similar between supplemental nitrogen methods at each N rate and irrigation regime.

    Sugarbeet Response to Incremental Application of Nitrogen with High Frequency Sprinkler Irrigation · 1981

    Opposite direction

152 papers more in this group

See all 161 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.