Intervention effectmodel-written summary

In two of four dry years, no-till corn yields were higher than conventional tillage yields.

A claim from Reduced chemical input cropping systems in the southeastern United States. II. Effects of moderate rates of N fertilizer and herbicides, tillage, and delayed cover crop plow-down on crop yields · 1994

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

In two of four dry years, no-till corn yields were higher than conventional tillage yields.

Treatment
no-tille0
Outcome
yieldse0
Direction
highere0
Value
<2600 kg/hae0
Qualifier
2 of 4 dry yearse0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSetting

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

“in 2 of 4 dry years, yields (<2600 kg/ha) were higher with no-till.”

✓ located verbatim in the source · abstract, characters 1158–1225
e1

“continuous corn yields with no-till and conventional tillage were equal in 1990 and 1992”

✓ located verbatim in the source · abstract, characters 818–906

Title

Reduced chemical input cropping systems in the southeastern United States. II. Effects of moderate rates of N fertilizer and herbicides, tillage, and delayed cover crop plow-down on crop yields

Larry D. King American Journal of Alternative Agriculture 1994. doi:10.1017/s0889189300005920

Other claims from this paper (11)

Record rev-91845ef92ab91c97402b0fa172d6d504b4051d840c7a8d3177793c089deeb14a · schema claims-v0.9 · position 5 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
  2. negative
  3. no effect
  4. negative
  5. negative
  6. negative
  7. no effect
  8. negative

1,090 papers more in this group

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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.