Intervention effectmodel-written summary

Foliar urea increased the mass of 1000 seeds of the Siverka soybean variety by 6.9-11.8%.

A claim from Carbamide ((NH2)2CO) use efficiency in foliar fertilizing of soybean · 2024

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Foliar urea increased the mass of 1000 seeds of the Siverka soybean variety by 6.9-11.8%.

Taxon
soybeanGlycine maxe0
Material
Siverkae0
Treatment
foliar fertilization with urea ((NH2)2CO)e0
Outcome
mass of 1000 seedse3
Direction
increasee0
Value
6.9-11.8%e3

Not reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingQualifier

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“foliar fertilization with urea ((NH2)2CO) contributed to the increase in the number of beans per 1 plant in the Siverka soybean variety by 9.4-33.1%”

✓ located verbatim in the source · abstract, characters 873–1021
e3

“mass of 1000 seeds – by 6.9-11.8%”

✓ located verbatim in the source · abstract, characters 1113–1146

Title

Carbamide ((NH2)2CO) use efficiency in foliar fertilizing of soybean

Zh. A. Moldovan; V. H. Moldovan Feeds and Feed Production 2024. doi:10.31073/kormovyrobnytstvo202497-03

Other claims from this paper (11)

Record rev-e4653c63ec7375c4f413c3a93fc636a865d51e4464d1d736db147239a7e4386a · schema claims-v0.9 · position 4 in the model’s answer

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 →

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

416 papers: 318 positive, 98 negative or no effect

317 papers in the same direction as this claim · 91 in the opposite direction · 7 reporting no difference from an alternative

  1. negative
    Soybeans relying only on atmospheric nitrogen yielded less than half as much seed as those using nitrate and atmospheric nitrogen in hydroponics.

    Soil and Symbiotic Nitrogen Requirements for Optimum Soybean Production1 · 1974 · compared with plants utilizing both nitrate and atmospheric nitrogen

    Opposite direction

  2. no effect
    Applied nitrogen did not significantly affect grain yield; the observed increase was 39 kg ha−1.

    Nitrogen Application to Soybean at Early Reproductive Development · 2005 · compared with no‐N control

    Opposite direction

  3. negative
    Nitrogen stress during seed development reduced soybean final seed size.

    The Effect of Source-Sink Alterations on Soybean Seed Growth* · 1985

    Opposite direction

  4. no effect
    Soil-applied N or foliar-applied B did not increase soybean seed yield at any rate or application stage.

    Soybean Yield Response to Reproductive Stage Soil‐Applied Nitrogen and Foliar‐Applied Boron · 2001

    Opposite direction

  5. no effect
    With adequate N, nodulated and non-nodulated soybean had similar seed yields.

    Dry Matter Accumulation in Soybean (Glycine max (L) Merrill) Plants As Influenced by N, P, and K Fertilization1 · 1971 · compared with nodulated and non‐nodulated soybeans

    Opposite direction

  6. no effect
    Nitrogen at rates up to 360 kg/ha added for the preceding year's corn had no effect on soybean yields.

    Soybean Yields with Direct and Residual Nitrogen Fertilization1 · 1973

    Opposite direction

  7. 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

  8. no effect
    Straw treatment, nitrogen timing, and nitrogen rate did not significantly differ in soybean yield.

    Effect of Nitrogen on Nodulation and Yield of Irrigated Soybeans1 · 1971

    Opposite direction

407 papers more in this group

See all 416 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.