Intervention effectmodel-written summary

Combined NPK and zinc fertilization increased maize grain zinc content by 12.0 %.

A claim from Effects of Combined Application of Nitrogen,Phosphorus,Potassium and Zinc Fertilizer on the Zinc Content of Wheat and Maize · 2010

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined NPK and zinc fertilization increased maize grain zinc content by 12.0 %.

Taxon
maizeZea mayse2
Treatment
Combined application of nitrogen,phosphorus,potassium and zinc fertilizere2
Outcome
zinc contente2
Direction
increasede2
Value
12.0 %e2

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingQualifier

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e2

“Combined application of nitrogen,phosphorus,potassium and zinc fertilizer,the zinc content and uptake in wheat grain could be increased by 25.0% and 25.7%,and those in maize grain could be increased by 12.0 % and 13.0%,respectively”

✓ located verbatim in the source · abstract, characters 590–821

Title

Effects of Combined Application of Nitrogen,Phosphorus,Potassium and Zinc Fertilizer on the Zinc Content of Wheat and Maize

Ma Li 2010

Other claims from this paper (9)

Record rev-098eecbbcf6689c1ac7af5a6fe17a93066f67b88e82069e9f8ec44c07fe1bd0d · schema claims-v0.9 · position 7 in the model’s answer

zinc atom · nutrient: content · Zea mays (maize)Results differ

235 papers: 199 positive, 36 negative or no effect

198 papers in the same direction as this claim · 33 in the opposite direction · 3 reporting no difference from an alternative

  1. no effect
    Zn source did not significantly affect corn nutrient concentration.

    Effect of Zinc × Boron Interaction on Plant Growth and Tissue Nutrient Concentration of Corn · 2007

    Opposite direction

  2. negative
    Added zinc caused iron deficiency in corn.

    Zinc Deficiency and Iron Chlorosis Dependent on the Plant Species and Nutrient‐Element Balance in Tulare Clay · 1962

    Opposite direction

  3. negative
    Shoot Zn reached 75 mg kg−1 versus 2.76 mg kg−1 in controls.

    Root Characteristics and Metal Uptake of Maize (Zea mays L.) under Extreme Soil Contamination · 2021

    Opposite direction

  4. negative
    Zn, Pb and Cd together interfere with uptake and translocation of calcium and magnesium in maize.

    The Interplay between Toxic and Essential Metals for Their Uptake and Translocation Is Likely Governed by DNA Methylation and Histone Deacetylation in Maize · 2020

    Opposite direction

  5. no effect
    Total grain nitrogen content of maize did not respond to the NPK fertilizer supplemented with magnesium or zinc.

    Effect of magnesium or zinc supplementation at the background of nitrogen rate on nitrogen management by maize canopy cultivated in monoculture · 2011

    Opposite direction

  6. negative
    Zn sources of medium and low water solubility did not supply enough Zn to meet the corn crop needs.

    Zinc Fertilizer Solubility and Its Effects on Zinc Bioailability Over Time · 2007

    Opposite direction

  7. no effect
    Low rate Zn chitosan nanoparticles gave no or negligible grain Zn increase over water.

    Biofortification of different maize cultivars with zinc, iron and selenium by foliar fertilizer applications · 2023 · compared with deionized water

    Opposite direction

  8. no effect
    Of soils with more than 0.55 ppm dithizone-extractable Zn, 76% did not respond to Zn applications.

    Plant Uptake and Fate of Soil‐Applied Zinc · 1962

    Opposite direction

226 papers more in this group

See all 235 papers →

potassium · nutrient: content · Zea mays (maize)Results differ

96 papers: 74 positive, 22 negative or no effect

73 papers in the same direction as this claim · 22 in the opposite direction

  1. no effect
    PNS had no significant effect on seed phosphorus, calcium and sodium concentrations in maize.

    Response of maize (Zea mays L.) to potassium nano-silica application under drought stress · 2020

    Opposite direction

  2. no effect
    Applied K rate had little effect on K uptake patterns in maize parts.

    Nutrient Uptake and Productivity as Affected by Nitrogen and Potassium Application Levels in Maize/Sweet Potato Intercropping System · 2001

    Opposite direction

  3. negative
    total Fe decreased at the highest K dose.

    Effects of potassium and iron on macro element uptake of maize. · 2010

    Opposite direction

  4. no effect
    Co-application of P and K with N did not significantly affect nutrient concentration and uptake in corn.

    Nitrogen, Phosphorus, and Potassium Uptake in Rain-Fed Corn as Affected by NPK Fertilization · 2023

    Opposite direction

  5. negative
    High rates of potassium, enhanced by ploughing in crop-residue ash, seriously reduced maize magnesium status.

    Effects of Fertilizers on Exchangeable Cation Ratios and Crop Nutrition in Northern Nigeria · 1976

    Opposite direction

  6. negative
    Higher K rates decreased calcium, magnesium, or phosphorus uptake.

    Nutrient Dilution—Antagonism Effects in Corn and Snap Beans in Relation to Rate and Source of Applied Potassium · 1975

    Opposite direction

  7. negative
    Increasing K rate decreased leaf Ca concentration.

    Effects of Nitrogen and Potassium on Growth and Cation Composition of Corn Genotypes Differing in Average Ear Number1 · 1987

    Opposite direction

  8. no effect
    Potassium and nitrapyrin rates did not affect total grain nitrogen.

    Effects of Increasing the Rates of Potassium and Nitrapyrin on Nitrogen Uptake by Corn1 · 1983

    Opposite direction

87 papers more in this group

See all 96 papers →

phosphorus · nutrient: content · Zea mays (maize)Positive and negative results

244 papers: 190 positive, 54 negative or no effect

189 papers in the same direction as this claim · 50 in the opposite direction · 4 reporting no difference from an alternative

  1. no effect
    Phosphorus application did not increase silicon and phosphorus contents in maize shoots and roots.

    Effect of Silicon on Low pH Soil Phosphorus Sorption and on Uptake and Growth of Maize · 2004

    Opposite direction

  2. negative
    Phosphorus deprivation decreased chlorophyll and phosphorus fractions throughout the maize shoot.

    Phosphate Deficiency in Maize. V. Mobilization of Nitrogen and Phosphorus within Shoots of Young Plants and its Relationship to Senescence · 1995

    Opposite direction

  3. no effect
    The HP treatment did not affect the absorption of Zn by maize.

    THE ROLE OF VA MYCORRHIZAE IN THE ABSORPTION OF P AND Zn BY MAIZE IN FIELD AND GROWTH CHAMBER EXPERIMENTS · 1989

    Opposite direction

  4. negative
    P uptake Vmax rose under P deficiency, especially in maize.

    Mobilization of phosphorus contributes to positive rotational effects of leguminous cover crops on maize grown on soils from northern Nigeria · 2002

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

  5. negative
    Phosphate reduced Fe uptake more in ys 1 than in Pa 54.

    Iron Uptake Dependent upon Genotype of Corn · 1969

    Opposite direction

  6. negative
    Only 32 μM phosphorus significantly lowered maize shoot zinc relative to other treatments.

    PHOSPHORUS AND ZINC INTERACTIONS AND THEIR RELATIONSHIPS WITH OTHER NUTRIENTS IN MAIZE GROWN IN CHELATOR-BUFFERED NUTRIENT SOLUTION · 2011 · compared with other treatments

    Opposite direction

  7. negative
    High phosphorus increased zinc 65 in the ethanol soluble fraction of corn root cell walls.

    Changes in the Zinc‐65 Distribution in Corn Root Tissue with a Phosphorus Variable1 · 1977

    Opposite direction

  8. negative
    High P supply decreased Zn concentration in corn shoots.

    Yield and Uptake Response of Corn to Zinc, as Influenced by Phosphorus Fertilization1 · 1976

    Opposite direction

235 papers more in this group

See all 244 papers →

3 of 5 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.