Intervention effectmodel-written summary

Zinc fertilizer increased maize grain yield by circa 18 % (mean of three years) compared with NPK fertilization alone.

A claim from Effect of zinc foliar application on grain yield of maize and its yielding compone · 2009

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Zinc fertilizer increased maize grain yield by circa 18 % (mean of three years) compared with NPK fertilization alone.

Taxon
maizeZea mayse0
Treatment
zinc fertilizere0
Outcome
Grain yielde1
Direction
increasee1
Value
circa 18%e1
Comparator
treatment fertilized only with NPKe1
Setting
three-year field studye0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleQualifier

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“verified within a three-year field study, where zinc fertilizer was applied to maize plants at the 5th leaf stage”

✓ located verbatim in the source · abstract, characters 268–381
e1

“Grain yield increase was circa 18% (mean of three years) as compared to the treatment fertilized only with NPK”

✓ located verbatim in the source · abstract, characters 605–715

Title

Effect of zinc foliar application on grain yield of maize and its yielding compone

J. Potarzycki; W. Grzebisz Plant Soil and Environment 2009. doi:10.17221/95/2009-pse

Other claims from this paper (7)

Record rev-62a41f46deb3a15da1176a38d1333ec2efe555b3d6c67a88aedef926a3430679 · schema claims-v0.9 · position 3 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. no effect
  2. no effect
  3. no effect
  4. no effect
  5. positive
  6. positive
  7. positive
  8. positive

432 papers more in this group

See all 441 papers →

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

3,908 papers: 3,485 positive, 423 negative or no effect

3,484 papers in the same direction as this claim · 338 in the opposite direction · 85 reporting no difference from an alternative

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

3,899 papers more in this group

See all 3,908 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.