Intervention effectmodel-written summary

Subsoiling alone did not change the mean yield of potatoes.

A claim from The effects of subsoiling and deep incorporation of P and K fertilizers on the yield and nutrient uptake of barley, potatoes, wheat and sugar beet grown in rotation · 1979

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Subsoiling alone did not change the mean yield of potatoes.

Taxon
potatoesSolanum tuberosume2
Treatment
Subsoiling alonee1
Outcome
Mean yielde2
Direction
unaffectede2
Setting
sandy loam soil at Woburne0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorValueQualifier

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

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

e0

“A small-plot experiment on sandy loam soil at Woburn tested the effects of subsoiling by hand”

✓ located verbatim in the source · abstract, characters 8–101
e1

“Subsoiling alone increased the 4-year mean yield of wheat by 21%, of barley by 24% and of sugar from sugar beet by 11%”

✓ located verbatim in the source · abstract, characters 663–781
e2

“Mean yield of potatoes was unaffected”

✓ located verbatim in the source · abstract, characters 783–820

Title

The effects of subsoiling and deep incorporation of P and K fertilizers on the yield and nutrient uptake of barley, potatoes, wheat and sugar beet grown in rotation

J. McEwen; A. E. Johnston The Journal of Agricultural Science 1979. doi:10.1017/s0021859600053946

Other claims from this paper (7)

Record rev-2bb5be91fa5bd614c3c564045868be1a0efac70b00ea06bdafcc968607f221f1 · schema claims-v0.9 · position 4 in the model’s answer

tillage · yield · Solanum tuberosum (potato)Results differ

52 papers: 34 positive, 18 negative or no effect

18 papers in the same direction as this claim · 33 in the opposite direction

  1. positive
  2. positive
  3. positive
  4. positive
  5. positive
  6. positive
  7. positive
  8. positive

43 papers more in this group

See all 52 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.