Intervention effectmodel-written summary

Additional nitrogen, sulfur, increased population and fungicide contributed 3–6 bu/a to grain yield in Manhattan.

A claim from Plant Population and Fungicide Treatment Reduce Winter Wheat Yield Gap in Kansas · 2018

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Additional nitrogen, sulfur, increased population and fungicide contributed 3–6 bu/a to grain yield in Manhattan.

Taxon
Winter WheatTriticum aestivumt0
Treatment
additional nitrogen, sulfur, increased population, and fungicidee0
Outcome
grain yielde0
Direction
increasede0
Value
3–6 bu/ae0
Setting
Manhattane0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorQualifier

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In Manhattan, the intensive control increased grain yield by 6 bu/a as compared to the standard control, mostly led by additional nitrogen, sulfur, increased population, and fungicide (3–6 bu/a)”

✓ located verbatim in the source · abstract, characters 818–1012
t0

“Winter Wheat Yield Gap in Kansas”

✓ located verbatim in the source · title, characters 48–80

Title

Plant Population and Fungicide Treatment Reduce Winter Wheat Yield Gap in Kansas

B. R. Jaenisch; R. P. Lollato Kansas Agricultural Experiment Station Research Reports 2018. doi:10.4148/2378-5977.7616

Other claims from this paper (4)

Record rev-08b5af337aadeb7b6c2f54624bc9e9f87653def76ca8c440101bd0b99ae1b50f · schema claims-v0.9 · position 2 in the model’s answer

sulfur atom · yield · Triticum aestivum (wheat)Results differ

148 papers: 124 positive, 24 negative or no effect

123 papers in the same direction as this claim · 23 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
    Sulfur application yielded hardly any benefit.

    Landscape positions dictating crop fertilizer responses in wheat-based farming systems of East African Highlands · 2020

    Opposite direction

  2. no effect
    Sulphur fertiliser had little effect on grain yield or grain nitrogen and sulphur concentration and uptake.

    Management of nitrogen and sulphur fertiliser for improved bread wheat ( Triticum aestivum ) quality · 2001

    Opposite direction

  3. no effect
    Sulfur rate, source and timing did not affect yield on soils with SOM above 20 g kg −1.

    Do Hard Red Spring Wheat Varieties Vary in Their Response to Sulfur? · 2019

    Opposite direction

  4. no effect
    Sulfur did not increase winter wheat grain yield at any site.

    In‐Season Application of Nitrogen and Sulfur in Winter Wheat · 2019

    Opposite direction

  5. no effect
    Sulfur source treatments had a nonsignificant residual effect on wheat grain yield.

    Effect of Direct and Residual Effects of Different Sulfur Fertilizers on Groundnut and Wheat Cropping System on Typic Haplaquent Soils · 2003

    Opposite direction

  6. negative
    Sulfur reduced lentil and wheat yields.

    Evaluation of soil pH manipulation on crop production in northern idaho · 1986

    Opposite direction

  7. no effect
    Zinc and sulfur treatments did not affect wheat biomass production or yield.

    Increasing the supply of sulphur increases the grain zinc concentration in bread and durum wheat · 2009

    Opposite direction

  8. no effect
    Additional S fertilizer produced no observed winter wheat yield response at any location.

    On‐Farm Winter Wheat Response to Nitrogen‐, Phosphorus‐, Potassium‐, and Sulfur‐Rich Strips in Oklahoma · 2017 · compared with farmer's fertility practice

    Opposite direction

139 papers more in this group

See all 148 papers →

fungicide · yield · Triticum aestivum (wheat)Positive and negative results

262 papers: 232 positive, 30 negative or no effect

231 papers in the same direction as this claim · 30 in the opposite direction

  1. negative
    Chlorothalonil reduced aboveground spring wheat dry matter yield.

    The influence of chlorothalonil on the activity of soil microorganisms and enzymes · 2018

    Opposite direction

  2. no effect
    One and two fungicide sprays did not differ significantly in increasing wheat grain yield.

    Reduction of Winter Wheat Yield Losses Caused by Stripe Rust through Fungicide Management · 2016 · compared with One

    Opposite direction

  3. no effect
    Fungicides did not change kernel weight.

    Fungicide and Nitrogen Effects on Winter Wheat under Low Foliar Disease Severity · 1989

    Opposite direction

  4. no effect
    In 1998, without disease, fungicides did not significantly increase wheat yield.

    Fungicide efficacy and the impact of stripe rust on spring and winter wheat in South Africa · 2003

    Opposite direction

  5. negative
    In 2008, when leaf rust was very low, fungicide application had a slightly negative effect on yield overall.

    Comparative yield, disease resistance and response to fungicide for forty-five historic Canadian wheat cultivars · 2013

    Opposite direction

  6. negative
    The combined chlormequat and carbendazim yield gain was usually less than the sum of their separate gains.

    The effect of chlormequat chloride formulated with choline chloride on the height and yield of winter wheat · 1981 · compared with the two products applied separately

    Opposite direction

  7. negative
    Most propiconazole and herbicide combinations reduced wheat grain yield relative to isolated application or untreated control.

    Response of Wheat Plants to Combinations of Herbicides with Insecticides and Fungicides · 2019 · compared with their isolated application or to control without application

    Opposite direction

  8. no effect
    At Apache, fungicide did not change mean grain yield of intermediate or resistant cultivars.

    Agronomic and Economic Response of Hard Red Winter Wheat to Foliar Fungicide in the Southern Plains · 2012

    Opposite direction

253 papers more in this group

See all 262 papers →

nitrogen · yield · Triticum aestivum (wheat)Positive and negative results

2,061 papers: 1,737 positive, 324 negative or no effect

1,736 papers in the same direction as this claim · 285 in the opposite direction · 39 reporting no difference from an alternative

  1. negative
    The lowest N rates reduced grain number per square metre at any given photothermal quotient.

    The effects of radiation and nitrogen on number of grains in wheat · 1995

    Opposite direction

  2. negative
    Severe drought with low nitrogen reduced grain yields.

    Nitrogen Nutrition Improves the Potential of Wheat (Triticum aestivum L.) to Alleviate the Effects of Drought Stress during Vegetative Growth Periods · 2016

    Opposite direction

  3. negative
    Low nitrogen reduced grain yield to 4.3 t/ha.

    The Effects of Prolonged Drought and Nitrogen Fertilizer on Root and Shoot Growth and Water Uptake by Winter Wheat · 1989 · compared with both N and water

    Opposite direction

  4. negative
    Terminal spikelet production was delayed by about 2 d at these N treatments in Aroona.

    Leaf Emergence, Tiller Growth, and Apical Development of Nitrogen‐Dificient Spring Wheat · 1993

    Opposite direction

  5. no effect
    Nitrogen level, N timing and seeding rate had no significant effect on spring wheat grain yield across environments.

    Seeding Rate and Nitrogen Management Effects on Spring Wheat Yield and Yield Components · 2007

    Opposite direction

  6. no effect
    ear weight changed with two nitrogen treatments.

    Effect of source‐sink relations and nitrogen nutrition on senescence and N remobilization in the flag leaf of wheat · 1991

    Opposite direction

  7. negative
    In some environments, higher nitrogen rates lowered wheat yield.

    Graphic Analysis of Genotype, Environment, Nitrogen Fertilizer, and Their Interactions on Spring Wheat Yield · 2004

    Opposite direction

  8. no effect
    Nitrogen timing did not significantly affect grain yield.

    Hard Red Spring Wheat Response to Row Spacing, Seeding Rate, and Nitrogen · 2008

    Opposite direction

2,052 papers more in this group

See all 2,061 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.