Intervention effectmodel-written summary

Nitrogen decreased seed oil percentage.

A claim from RESPONSE OF SUNFLOWER (HELIANTHUS ANNUUS L.) TO PHOSPHORUS AND NITROGEN FERTILIZATION UNDER DIFFERENT PLANT SPACING AT NEW VALLEY · 2010

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Nitrogen decreased seed oil percentage.

Taxon
SUNFLOWERHelianthus annuust0
Treatment
Nitrogen applicatione0
Outcome
seed oil percentagee0
Direction
decreasee0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

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

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

t0

“SUNFLOWER”

✓ located verbatim in the source · title, characters 12–21
e0

“Nitrogen application markedly enhanced growth and yield, but resulted in decrease in seed oil percentage.”

✓ located verbatim in the source · abstract, characters 946–1051

Title

RESPONSE OF SUNFLOWER (HELIANTHUS ANNUUS L.) TO PHOSPHORUS AND NITROGEN FERTILIZATION UNDER DIFFERENT PLANT SPACING AT NEW VALLEY

E Osman; M Awed Assiut University Bulletin for Environmental Researches 2010. doi:10.21608/auber.2010.149260

Other claims from this paper (7)

Record rev-e45fd47916345b41466dc4242af0d4fa7a12e812a63781697511b3134e1e7435 · schema claims-v0.9 · position 6 in the model’s answer

nitrogen · quality: oil · Helianthus annuus (common sunflower)Results differ

51 papers: 40 positive, 11 negative or no effect

10 papers in the same direction as this claim · 40 in the opposite direction

  1. positive
    Increasing nitrogen increased linoleic acid in both years.

    Effect of nitrogen on achene protein, oil, fatty acid profile, and yield of sunflower hybrids · 2012

    Opposite direction

  2. positive
    Application of N, S and B fertilizers significantly increased yield attributes, yield and oil quality parameters of spring sunflower.

    Effect of nitrogen sources, sulphur and boron levels on productivity, nutrient uptake and quality of sunflower (Helianthus annuus) · 2008

    Opposite direction

  3. positive
    The highest nitrogen rate and inoculation gave the highest yields.

    Effects of Bio and Chemical Nitrogen Fertilizer on Grain and Oil Yield of Sunflower(Helianthus annuus L.) under Different Rates of Plant Density · 2012

    Opposite direction

  4. positive
    Crude oil yield was highest with 160 kg N ha-1 and higher N rates.

    Responses of sunflower (Helianthus annuus L.) to irrigation and nitrogen fertilization rates · 2013

    Opposite direction

  5. positive
    Oil content decreased consistently with higher nitrogen dose.

    Growth and yield of sunflower (Helianthus annus L.) as influenced by nitrogen, sulphur and farmyard manure under temperate conditions · 2014

    Opposite direction

  6. positive
    The highest oil yield, 2114 kg ha-1, was obtained from the combined use of nitrogen and vermicompost.

    EFFECT OF ORGANIC AND INORGANIC FERTILIZERS OR THEIR COMBINATIONS ON YIELD AND QUALITY COMPONENTS OF OIL SEED SUNFLOWER IN A SEMI-ARID ENVIRONMENT · 2021

    Opposite direction

  7. positive
    N application increased the oleic acid to linoleic acid ratio of sunflower oil, indicating better stability and cooking quality.

    Effect of Fertilizer Nitrogen and Phosphorus on the Grain Yield, Nutrient Uptake and Oil Quality of Sunflower · 1997

    Opposite direction

  8. positive
    Individual nitrogen supplementation increased sunflower palmitic and linoleic acid contents.

    INTEGRATED NITROGEN AND BORON FERTILIZATION IMPROVES THE PRODUCTIVITY AND OIL QUALITY OF SUNFLOWER GROWN IN A CALCAREOUS SOIL · 2015

    Opposite direction

42 papers more in this group

See all 51 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.