Intervention effectmodel-written summary

No till increased corn yield in 2 of 4 years.

A claim from Water Use and Yield of Limited‐Irrigated and Dryland Corn · 2000

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

No till increased corn yield in 2 of 4 years.

Treatment
No tille0
Outcome
yielde0
Direction
increasede0
Qualifier
in 2 of 4 yre1

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Corn”

✓ located verbatim in the source · title, characters 53–57
e0

“No till increased yield”

✓ located verbatim in the source · abstract, characters 1287–1310
e1

“(WUE) in 2 of 4 yr”

✓ located verbatim in the source · abstract, characters 1336–1354

Title

Water Use and Yield of Limited‐Irrigated and Dryland Corn

Charles A. Norwood Soil Science Society of America Journal 2000. doi:10.2136/sssaj2000.641365x

Other claims from this paper (6)

Record rev-8da81ac54caec0febbdb0473e0ce036a7b52b05c8bd159e77ae070eea3e74f16 · schema claims-v0.9 · position 4 in the model’s answer

tillage · yield · Zea mays (maize)Positive and negative results

1,099 papers: 812 positive, 287 negative or no effect

811 papers in the same direction as this claim · 230 in the opposite direction · 57 reporting no difference from an alternative

  1. negative
    No-tillage standing residue produced the lowest corn grain yield in 1983 due to N deficiency.

    Wheat Residue Management Effects on Soil Water Storage and Corn Production · 1986

    Opposite directionCited by this paper

  2. no effect
    Grain yield was generally similar across the three tillage systems.

    Corn Response, Nitrogen Uptake, and Water Use in Strip‐Tillage Compared with No‐Tillage and Chisel Plow · 2005 · compared with three tillage systems

    No difference from an alternativeCites this paper

  3. positive
    Strip tillage had numerically greater grain yield than conventional tillage, significantly so in two years.

    Corn Yield and Water Use Characteristics as Affected by Tillage, Plant Density, and Irrigation · 2009 · compared with conventional tillage

    Same directionCites this paper

  4. positive
    No-till net returns were $46 to 74 ha −1 higher than conventional tillage.

    Economics of Irrigated Continuous Corn under Conventional‐Till and No‐Till in Northern Colorado · 2008 · compared with CT

    Same directionCites this paper

  5. positive
    No tillage doubled corn yield in 1991.

    Tillage, Planting Date, and Plant Population Effects on Dryland Corn · 1996

    Same directionCited by this paper

  6. positive
    Mean four year grain yield under no tillage was 8.01 Mg ha −1.

    Corn Yield and Water‐Use Efficiency as Affected by Tillage and Irrigation · 1993 · compared with CT

    Same directionCited by this paper

  7. positive
    Overall, no-till increased corn yield by 28%.

    Dryland Corn vs. Grain Sorghum in Western Kansas · 1997

    Same directionCited by this paper

  8. positive
    Reduced and no tillage increased corn yield in three of four years.

    An Agronomic and Economic Comparison of the Wheat‐Corn‐Fallow and Wheat‐Sorghum‐Fallow Rotations · 1998

    Same directionCited by this paper

1,090 papers more in this group

See all 1,099 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.