Intervention effectmodel-written summary

First-year corn economic grain yield was optimized at 83 kg N ha −1 under no tillage at one site.

A claim from Effect of Tillage on Residual Nitrogen Availability From Alfalfa to Succeeding Corn Crops1 · 1987

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

First-year corn economic grain yield was optimized at 83 kg N ha −1 under no tillage at one site.

Treatment
NTe0
Outcome
economic grain yieldse0
Direction
Optimume0
Value
83e0
Qualifier
kg N ha −1e0
Comparator
CTe0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSetting

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

“Optimum economic grain yields for first‐year corn resulted with the application of 83 and 88 kg N ha −1 for the NT and CT treatments, respectively, at one site”

✓ located verbatim in the source · abstract, characters 1147–1306
e1

“no‐tillage (NT) and conventional tillage (CT)”

✓ located verbatim in the source · abstract, characters 582–627

Title

Effect of Tillage on Residual Nitrogen Availability From Alfalfa to Succeeding Corn Crops1

A. Levin; D. B. Beegle; R. H. Fox Agronomy Journal 1987. doi:10.2134/agronj1987.00021962007900010008x

Other claims from this paper (7)

Record rev-3cef2f6d6cc6a57bd4e5a9c71a94032ac7510c9c752d3a07542b77ab8aa9f6bf · schema claims-v0.9 · position 3 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. no effect
  3. negative
  4. no effect
  5. negative
  6. negative
  7. negative
  8. no effect

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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.