Intervention effectmodel-written summary

Chelated iron spray gave higher soybean yield than ferrous sulfate spray.

A claim from Study on Technique of Relieving Lack Iron Nutrition for Soybean Plants in Calcareous Soil · 2011

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Chelated iron spray gave higher soybean yield than ferrous sulfate spray.

Taxon
SoybeanGlycine maxe0
Treatment
Spraying chelate iron as dress fertilizere0
Outcome
yielde0
Direction
highere0
Comparator
spraying ferrous sulfate treatmente0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Spraying chelate iron as dress fertilizer achieved higher yield and better improved the symptom of lack iron nutrition for Soybean than spraying ferrous sulfate treatment”

✓ located verbatim in the source · abstract, characters 584–754

Title

Study on Technique of Relieving Lack Iron Nutrition for Soybean Plants in Calcareous Soil

Mengchen Zhang Acta Agriculturae Boreali-Sinica 2011

Other claims from this paper (5)

Record rev-1abca53bfa006ea4bd8f4666d119a8842a0b7d162f71972161a684a2ea5544bf · schema claims-v0.9 · position 5 in the model’s answer

iron atom · yield · Glycine max (soybean)Results differ

46 papers: 37 positive, 9 negative or no effect

36 papers in the same direction as this claim · 9 in the opposite direction

  1. no effect
    Soil or foliar Fe or Mn did not change soybean root or shoot dry matter yield.

    Influence of foliar and soil applications of iron and manganese on soybean dry matter yield and iron-manganese relationship in a Calcareous soil · 2011

    Opposite direction

  2. negative
    Increasing FeEDDHA from 0.2 to 2 mg Fe per kg decreased soybean dry matter yield at 15°C but not at 24°C.

    Manganese Deficiency in Soybeans as Affected by FeEddha and Low Soil Temperature · 1985

    Opposite direction

  3. no effect
    Average seed yield of the 12 Fe-fertilized treatments at R6 was only 12% greater than the untreated check, not significant.

    Soybean Growth on Calcareous Soil as Affected by Three Iron Sources · 2003 · compared with untreated check

    Opposite direction

  4. no effect
    Fe-EDDHA application did not significantly increase soybean yield on calcareous soil

    Field Evaluations of Yield, Iron-Manganese Relationship, and Chlorophyll Meter Readings in Soybean Genotypes as Affected by Iron-Ethylenediamine Di-o-hydroxyphenylacetic Acid in a Calcareous Soil · 2007

    Opposite direction

  5. no effect
    The 9% increase in soybean grain yield from 20 kg Fe ha-1 applied to soil was not significant.

    Iron deficiency depresses growth of furrow irrigated soybean and pigeon pea on vertisols of northern N.S.W · 1992

    Opposite direction

  6. no effect
    Iron application did not affect soybean sub-branch number or main-stem 100-seed weight.

    Effects of Zn, Fe and Mn on soybean production · 2011

    Opposite direction

  7. no effect
    Yield and plant biomass did not differ significantly between Fe treatments.

    How Raised Beds and Fe-Chelate Affect Soybean Iron Deficiency Chlorosis and Yield · 2021

    Opposite direction

  8. negative
    Iron produced lower soybean yield than background.

    Influence of trace elements on soybean yield in grassland-swamp soils · 2021 · compared with background variant

    Opposite direction

37 papers more in this group

See all 46 papers →

application · yield · Glycine max (soybean)Positive and negative results

404 papers: 332 positive, 72 negative or no effect

331 papers in the same direction as this claim · 66 in the opposite direction · 6 reporting no difference from an alternative

  1. negative
    Vapor and/or spray drift that caused soybean terminal bud kill reduced soybean yields.

    Dicamba Volatility · 1979

    Opposite direction

  2. no effect
    Foliar fungicides did not affect soybean seed yield.

    Effect of Fungicide on Soybean Growth and Yield · 2009

    Opposite direction

  3. no effect
    Foliar 2,4-D had little effect on soybean yield at prebloom.

    Response of Soybeans to 2,4-D, Dicamba, and Picloram · 1969

    Opposite direction

  4. no effect
    Foliar fertilization did not significantly affect seed yield.

    Effect of Foliar Fertilization on Photosynthesis, Leaf Nutrition, and Yield of Soybeans1 · 1978

    Opposite direction

  5. negative
    K-polyphosphate mix foliar spraying reduced soybean yield by 10.9% on average over two sites.

    Foliage Injury, Nutrient Intake, and Yield of Soybeans as Influenced by Foliar Fertilization1 · 1980

    Opposite direction

  6. no effect
    Mineral N applied at the R5.3 stage, foliar or as topdressing, did not increase soybean grain yield in four field experiments.

    Mineral nitrogen impairs the biological nitrogen fixation in soybean of determinate and indeterminate growth types · 2017

    Opposite direction

  7. no effect
    Soil or foliar Fe or Mn did not change soybean root or shoot dry matter yield.

    Influence of foliar and soil applications of iron and manganese on soybean dry matter yield and iron-manganese relationship in a Calcareous soil · 2011

    Opposite direction

  8. no effect
    Preharvest treatments, spray volume, and surfactant concentration did not affect soybean yield or harvestable losses.

    Herbicide Combinations for Preharvest Weed Desiccation in Early Maturing Soybean (Glycine max) · 1998

    Opposite direction

395 papers more in this group

See all 404 papers →

fertilization · yield · Glycine max (soybean)Positive and negative results

1,192 papers: 1,021 positive, 171 negative or no effect

1,020 papers in the same direction as this claim · 155 in the opposite direction · 16 reporting no difference from an alternative

  1. no effect
    Applying 200 kg nitrogen fertilizer per hectare gave no further yield gain.

    Nitrogen nutrition of soybean in Brazil: Contributions of biological N2 fixation and N fertilizer to grain yield · 2006

    Opposite direction

  2. no effect
    Foliar fertilization did not significantly affect seed yield.

    Effect of Foliar Fertilization on Photosynthesis, Leaf Nutrition, and Yield of Soybeans1 · 1978

    Opposite direction

  3. negative
    Green manure sometimes reduced soybean yield in plots with weeds.

    Weed Control in Soybean (Glycine max) with Green Manure Crops · 1998

    Opposite direction

  4. no effect
    Fertilizer N treatments did not change soybean seed yield at any of the 12 sites

    In‐Season Fertilizer Nitrogen Applications for Soybean in Minnesota · 2001 · compared with unfertilized control plots

    Opposite direction

  5. no effect
    Inoculated cultivars did not increase N yield under increasing fertilizer N rates.

    Dinitrogen Fixation Measured by 15N Isotope Dilution in Two Canadian Soybean Cultivars1 · 1982

    Opposite direction

  6. no effect
    Soybean yield was similar across production systems and fertilization strategies.

    Normalized Difference Vegetation Index (NDVI) for soybean biomass and nutrient uptake estimation in response to production systems and fertilization strategies · 2023

    Opposite direction

  7. negative
    Rows midway between bands had lower K uptake and productivity than rows over bands.

    Potassium Placement Effects on Yield and Seed Composition of No‐Till Soybean Seeded in Alternate Row Widths · 2003 · compared with soybean rows seeded above the K bands

    Opposite direction

  8. negative
    Fertilizer N decreased soybean yield in two of seven years.

    Crop Rotation Affects Corn, Grain Sorghum, and Soybean Yields and Nitrogen Recovery · 2016

    Opposite direction

1,183 papers more in this group

See all 1,192 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.