Intervention effectmodel-written summary

Zn application significantly increased corn grain yield in 1968.

A claim from Sprinkler Application of P and Zn Fertilizers1 · 1976

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Zn application significantly increased corn grain yield in 1968.

Treatment
Zn applicatione5
Outcome
Grain yieldse5
Direction
significantly increasede5
Setting
in 1968e5

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorValueQualifier

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

e1

“Sprinkler application and conventional preplant application effects of P and Zn fertilizers on the dry matter yield, nutrient content, and grain yield of corn ( Zea mays L.) were compared in 1968 and 1969”

✓ located verbatim in the source · abstract, characters 154–358
e5

“Grain yields were significantly increased by Zn application in 1968 but not in 1969”

✓ located verbatim in the source · abstract, characters 714–797

Title

Sprinkler Application of P and Zn Fertilizers1

G. W. Hergert; J. O. Reuss Agronomy Journal 1976. doi:10.2134/agronj1976.00021962006800010002x

Other claims from this paper (7)

Record rev-e9b0a9ec245474e9b244352fbe29c6c6165dae3408aa9c768b5b28364f6520a0 · schema claims-v0.9 · position 4 in the model’s answer

zinc atom · yield · Zea mays (maize)Results differ

441 papers: 391 positive, 50 negative or no effect

390 papers in the same direction as this claim · 47 in the opposite direction · 3 reporting no difference from an alternative

  1. negative
  2. negative
  3. no effect
  4. negative
  5. negative
  6. no effect
  7. no effect
  8. negative

432 papers more in this group

See all 441 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.