Intervention effectmodel-written summary

Yield, fruit quality and leaf mineral composition of Valencia orange were essentially unchanged by widely different schedules of applying N and K.

A claim from Effects of Time of Application of N and K and of N Rate on Performance of Nucellar ‘Valencia’ Orange Trees on Two Stocks1 · 1971

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Yield, fruit quality and leaf mineral composition of Valencia orange were essentially unchanged by widely different schedules of applying N and K.

Taxon
Citrus sinensisCitrus sinensise0
Material
Valenciae0
Organ / stage
leavese0
Treatment
widely different schedules of applying N and Ke0
Outcome
Yield of fruit, fruit quality, and mineral composition of the leavese0
Direction
essentially unchangede0

Not reportedGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

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

Citrus sinensis
Citrus sinensis · TaxonEllen Levy Finch ( Elf ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Yield of fruit, fruit quality, and mineral composition of the leaves of ‘Valencia’ orange [ Citrus sinensis (L.) Osb.] were essentially unchanged by widely different schedules of applying N and K”

✓ located verbatim in the source · abstract, characters 9–204

Title

Effects of Time of Application of N and K and of N Rate on Performance of Nucellar ‘Valencia’ Orange Trees on Two Stocks1

Paul F. Smith Journal of the American Society for Horticultural Science 1971. doi:10.21273/jashs.96.5.568

Other claims from this paper (4)

Record rev-85fbb6cb7deb912eb46d5721a52c6799a4e21e923da8a399fbf1bb17a7754b9a · schema claims-v0.9 · position 1 in the model’s answer

nitrogen · quality: grain · Citrus sinensis (sweet orange)Positive and negative results

4 papers: 2 positive, 2 negative or no effect

1 paper in the same direction as this claim · 2 in the opposite direction

  1. positive
    Higher nitrogen doses improved fruit quality.

    effect of soil nitrogen fertilizer on fruit set, the yield and fruit quality of Valencia orang trees. · 2022

    Opposite direction

  2. positive
    Foliar Mo application combined with the appropriate nitrogen source enhanced fruit quality and juice yield.

    Foliar application of molybdenum and soil nitrogen sources in the physiology, nutrition, and fruit quality of “Pêra” sweet oranges · 2025

    Opposite direction

  3. no effect
    Different organic fertilizer types with the same nitrogen amount did not change important orange fruit quality parameters.

    Influence of Different Organic Fertilizers on Quality Parameters and the δ15N, δ13C, δ2H, δ34S, and δ18O Values of Orange Fruit (Citrus sinensis L. Osbeck) · 2010

    Same direction

See all 4 papers →

potassium · quality: grain · Citrus sinensis (sweet orange)Positive and negative results

4 papers: 3 positive, 1 negative or no effect

3 in the opposite direction

  1. positive
    No potassium treatment adversely affected fruit quality in the second season.

    The role of potassium in determining fruit quality of sweet orange · 1972

    Opposite directionAbout lacking this nutrient, so it counts the other way round

  2. positive
    Potassium silicate at 0.2% increased fruit weight, volume, juice and SSC.

    Improving Vegetative Growth and Productivity of Navel Orange (Citrus sinensis L.) Trees under Salt Affected Soil Using Glycinebetaine and Potassium Silicate · 2021 · compared with control treatment (untreated trees)

    Opposite direction

  3. positive
    The combined treatment better maintained physical and biochemical fruit quality.

    Streptomyces corchorusii, sodium silicate, and potassium silicate as eco-friendly alternatives to control fungal rot of navel oranges during cold storage and shelf life · 2026

    Opposite direction

See all 4 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.