Intervention effectmodel-written summary

RDF + soil application of ZnSO₄ @ 20 kg/ha + 0.5% FeSO₄ foliar spray at 45 days after sowing (DAS) significantly enhanced P (154%).

A claim from Agronomic biofortification with iron and zinc for enhancement in yield and quality of maize (Zea mays L.) · 2025

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

RDF + soil application of ZnSO₄ @ 20 kg/ha + 0.5% FeSO₄ foliar spray at 45 days after sowing (DAS) significantly enhanced P (154%).

Taxon
maizeZea mayst0
Material
DHM 117e1
Treatment
RDF + soil application of ZnSO₄ @ 20 kg/ha + 0.5% FeSO₄ foliar spray at 45 days after sowing (DAS)e0
Outcome
Pe0
Direction
enhancede0
Value
154%e0

Not reportedGeneCompoundOrgan / 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

e0

“Results showed that the treatment RDF + soil application of ZnSO₄ @ 20 kg/ha + 0.5% FeSO₄ foliar spray at 45 days after sowing (DAS) significantly enhanced plant population (8.28 plants/m row at 30 DAS), plant height (up to 55.9% increase at harvest), dry matter accumulation (up to 67.12% increase), yield attributes (e.g., 57.85% more grains/cob), grain yield (87.85% increase to 74.84 q/ha), nutrient content and uptake (N, P, K increases of 108%, 154%, and 144% in grain), protein content (11.58% increase), and economic returns (net return of ₹102,715/ha, B:C ratio 1.77)”

✓ located verbatim in the source · abstract, characters 469–1045
t0

“maize”

✓ located verbatim in the source · title, characters 86–91
e1

“maize (Zea mays L.) hybrid DHM 117”

✓ located verbatim in the source · abstract, characters 236–270

Title

Agronomic biofortification with iron and zinc for enhancement in yield and quality of maize (Zea mays L.)

Meena B; Choudhary BL; Bhagora D International Journal of Agriculture and Nutrition 2025. doi:10.33545/26646064.2025.v7.i8b.278

Other claims from this paper (10)

Record rev-903dadd87f1a1d82579f698c1deb132de0c7731923d60c3fc8a599e6c2e0606b · schema claims-v0.9 · position 7 in the model’s answer

iron(2+) sulfate (anhydrous) · nutrient: content · Zea mays (maize)Positive and negative results

12 papers: 11 positive, 1 negative or no effect

10 papers in the same direction as this claim · 1 reporting no difference from an alternative

  1. no effect
    Foliar 75% RDF with 1.5% 19:19:19, 0.5% ZnSO4 and 0.1% FeSO4 gave nutrient uptake on par with the 0.2% ZnSO4 spray in baby corn

    Effect of foliar applied nutrients on soil chemical properties and nutrient uptake of baby corn (Zea mays L.) · 2018 · compared with 75% RDF + 1.5% 19:19:19 spray + 0.2% ZnSO4 + 0.1% FeSO4

    No difference from an alternative

  2. positive
    Foliar 0.3% iron sulfate improved grain iron concentration.

    Biofortification of maize with zinc and iron not only enhances crop growthbut also improves grain quality · 2021

    Same direction

  3. positive
    Zinc and iron application fortified with vermicompost produced significantly higher zinc and iron concentration in sweet corn grain and fodder.

    Agronomic Fortification with Zinc and Iron to Enhancing Micronutrient Concentration in Sweet corn grain to ameliorate the Deficiency Symptoms in Human Beings · 2018

    Same direction

  4. positive
    FeSO4 at 1 mM stimulated phosphate uptake by 92%.

    The effect of some micronutrients and heavy metals on phosphate absorption by maize root cortex segments · 1984

    Same direction

  5. positive
    The same spray maximized nitrogen, phosphorus and potassium uptake in grains, stover and total maize.

    Impact of Foliar Fortification of Zinc and Iron on Nutrient Content and their Uptake by Maize Crop · 2024 · compared with spray of ZnSO4 @ 1 % + spray of FeSO4 @ 0.1

    Same direction

  6. positive
    Zn and Fe seed treatment with foliar spray significantly increased zinc and iron concentration in sweet corn grain.

    Effect of morpho-physiological assessment of iron and zinc biofortification on yield and quality of sweet corn (Zea mays L. Saccharata) · 2020

    Same direction

  7. positive
    FeSO4 enrichment raised soil Fe content above TNAU mixture applications.

    Iron fertilization to alleviate iron deficiency in irrigated maize hybrid in non-calcareous soil · 2018 · compared with TNAU MN mixture either straight or enriched application

    Same direction

  8. positive
    FeSO4 enriched application gave higher Fe content in soil than straight or enriched TNAU MN mixture application.

    Alleviating iron deficiency through iron fertilization in calcareous soil · 2018 · compared with application of TNAU MN mixture either straight or enriched application

    Same direction

3 papers more in this group

See all 12 papers →

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

46 papers: 41 positive, 5 negative or no effect

40 papers in the same direction as this claim · 3 in the opposite direction · 2 reporting no difference from an alternative

  1. no effect
    Well mixed ZnSO 4 and organic zinc sources were equally effective at correcting zinc deficiency.

    Source and Placement of Zinc and Phosphorus for Corn (Zea mays L.) · 1966 · compared with organic sources such as ZnEDTA and Rayplex‐Zn

    Opposite direction

  2. negative
    Higher ZnSO4 doses inhibited maize nutrient uptake.

    Response of Bacillus cereus on Zea mays under different doses of zinc sulphate · 2021

    Opposite direction

  3. negative
    Zinc sulphate may delay potassium uptake.

    Effect of Different Element Formula on Nutrient Uptake in Maize · 2003

    Opposite direction

  4. no effect
    ZnSO4 and ZnCl2 treatments did not differ significantly in shoot cadmium concentration.

    Effects of Forms and Rates of Zinc Fertilizers on Cadmium Concentrations in Two Cultivars of Maize · 2006 · compared with ZnCl2

    No difference from an alternative

  5. no effect
    Foliar 75% RDF with 1.5% 19:19:19, 0.5% ZnSO4 and 0.1% FeSO4 gave nutrient uptake on par with the 0.2% ZnSO4 spray in baby corn

    Effect of foliar applied nutrients on soil chemical properties and nutrient uptake of baby corn (Zea mays L.) · 2018 · compared with 75% RDF + 1.5% 19:19:19 spray + 0.2% ZnSO4 + 0.1% FeSO4

    No difference from an alternative

  6. positive
    Increasing ZnSO 4 in nutrient solution prevented zinc deficiency in corn.

    The Critical Zn 2+ Concentration for Corn and the Nonabsorption of Chelated Zinc · 1977

    Same direction

  7. positive
    Increasing soil zinc raised maize shoot zinc concentration with ZnSO4.

    Biofortification of Silage Maize with Zinc, Iron and Selenium as Affected by Nitrogen Fertilization · 2021

    Same direction

  8. positive
    Conventional zinc sulfate most efficiently raised grain Zn among foliar Zn sources.

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

    Same direction

37 papers more in this group

See all 46 papers →

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

161 papers: 151 positive, 10 negative or no effect

150 papers in the same direction as this claim · 9 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
    Spray timing did not affect plant-part nitrogen content relative to controls.

    Uptake, Distribution, and Remobilization of 15N‐labeled Urea Applied to Maize Canopies1 · 1985 · compared with controls

    Opposite direction

  2. no effect
    Humus did not significantly affect P and Ca uptake.

    Effects of soil applied humic substances to dry weight and mineral nutrients uptake of maize under calcareous soil conditions · 2008

    Opposite direction

  3. no effect
    Low boron use and zinc solution spray did not affect grain boron uptake.

    Application of Different Levels of Zinc and Boron on Concentration and Uptake of Zinc and Boron in the Corn Grain · 2010

    Opposite direction

  4. negative
    Osmotic stress before or during the absorption period reduced Rb absorption to 20% or less of controls.

    INFLUENCE OF MANNITOL ON ABSORPTION AND RETENTION OF RUBIDIUM BY EXCISED CORN ROOTS · 1973 · compared with controls

    Opposite direction

  5. no effect
    Phosphite application number generally did not change phosphorus concentrations in corn grain, leaf and stem.

    Does phosphite, a reduced form of phosphate contribute to phosphorus nutrition in corn (Zea mays L.)? · 2019

    Opposite direction

  6. negative
    Four foliar CaCl 2 applications increased shoot cadmium concentration relative to two.

    Effects of Ca on growth and some physiological characteristics of maize under Cd stress · 2001 · compared with foliar application CaCl 2 two times

    Opposite direction

  7. no effect
    Leaf nutrient content did not differ before and after chelate application in either hybrid.

    Agronomic characteristics and management of diseases in maize with chelate-based products containing calcium, copper, manganese, and zinc · 2020 · compared with before

    Opposite direction

  8. negative
    Micronutrient enriched FYM with Jeevamrut gave significantly lower total digestible nutrient in fodder maize.

    Impact of integrated nitrogen management on the nutritional quality of fodder maize · 2025

    Opposite direction

152 papers more in this group

See all 161 papers →

3 of 4 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.