Intervention effectmodel-written summary

Subsoiling to 12 and 18 inches produced a significant corn yield response at the lower depth in Illinois, in only 2 out of 14 experiments.

A claim from Effect of Subsoiling and Deep Fertilizer Placement on Yields of Corn in Iowa and Illinois1 · 1960

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Subsoiling to 12 and 18 inches produced a significant corn yield response at the lower depth in Illinois, in only 2 out of 14 experiments.

Treatment
Subsoiling to 12 and 18 inches depthe1
Outcome
corn yield responsee1
Qualifier
in only 2 out of 14 experimentse1
Setting
Illinoise1

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorDirectionValue

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

e0

“Subsoiling to 16 and 24 inches depth did not increase corn yields in Iowa during 1955, 1956, and 1957”

✓ located verbatim in the source · abstract, characters 9–110
e1

“In Illinois, Subsoiling to 12 and 18 inches depth produced a significant corn yield response at the lower depth in only 2 out of 14 experiments in 1955 and 1956”

✓ located verbatim in the source · abstract, characters 112–272

Title

Effect of Subsoiling and Deep Fertilizer Placement on Yields of Corn in Iowa and Illinois1

W. E. Larson; W. G. Lovely; J. T. Pesek; et al. Agronomy Journal 1960. doi:10.2134/agronj1960.00021962005200040002x

Other claims from this paper (2)

Record rev-41c80ffe03eff609391afefe4cd4f6e203101ea5deed111529611363d41ac488 · schema claims-v0.9 · position 2 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. no effect
    Deeper plowing with liming and fertilizing did not increase corn yields in any year.

    Crop Response to Deep Tillage with Lime and Fertilizer · 1956

    Opposite directionCited by this paper

  2. no effect
    Cover-crop no-tillage and standard no-tillage gave similar corn yields.

    Potential Long‐Term Benefits of No‐Tillage and Organic Cropping Systems for Grain Production and Soil Improvement · 2007 · compared with NT

    Opposite direction

  3. negative
    No-till produced less corn grain than plow tillage.

    Tillage and Rotation Interactions for Corn and Soybean Grain Yield as Affected by Precipitation and Air Temperature · 2004 · compared with plow

    Opposite direction

  4. no effect
    Tillage had no grain-yield effect in manure or compost plots in three of four years.

    Composted and Noncomposted Manure Application to Conventional and No‐Tillage Systems: Corn Yield and Nitrogen Uptake · 1999

    Opposite direction

  5. negative
    No-tillage corn grain yield was 5% lower than under conventional tillage.

    Corn and Soybean Response to Rotation Sequence, Row Spacing, and Tillage System · 2003 · compared with conventional tillage system

    Opposite direction

  6. negative
    Continuous no-till corn on Chalmers soil was 2% wetter at harvest than plowed corn.

    Long‐Term Tillage and Rotation Effects on Corn Growth and Yield on High and Low Organic Matter, Poorly Drained Soils · 1988 · compared with plowing

    Opposite direction

  7. negative
    No-tillage without red clover reduced corn grain yield by 13% versus conventional tillage over three years.

    Red Clover and Tillage Influence on Soil Temperature, Water Content, and Corn Emergence · 1999 · compared with conventional tillage treatment

    Opposite direction

  8. no effect
    A significant tillage x year interaction indicated equal continuous corn yields for CT and NT in the first 2 years.

    Corn Production as Affected by Tillage System and Starter Fertilizer · 2002 · compared with NT

    Opposite direction

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.