Claim · model-written summary
Subsoiling alone did not change the mean yield of potatoes.
- Taxon
- potatoes
Solanum 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.

Verbatim
e0“A small-plot experiment on sandy loam soil at Woburn tested the effects of subsoiling by hand”
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%”
e2“Mean yield of potatoes was unaffected”
Title
J. McEwen; A. E. Johnston The Journal of Agricultural Science 1979. doi:10.1017/s0021859600053946
Other claims from this paper (7)
- Intervention effect Subsoiling alone increased the 4-year mean wheat yield by 21% on sandy loam soil at Woburn.
- Intervention effect Subsoiling alone increased the 4-year mean barley yield by 24% on sandy loam soil at Woburn.
- Intervention effect Subsoiling alone increased the 4-year mean sugar beet yield by 11% on sandy loam soil at Woburn.
- Intervention effect Incorporating P and K into the subsoil increased the mean yield of potatoes by 16%.
- Intervention effect Incorporating P and K into the subsoil further increased barley yield by 20%, in addition to the effect of subsoiling.
- Intervention effect Incorporating P and K into the subsoil further increased sugar beet yield by 4%, in addition to the effect of subsoiling.
- Intervention effect Incorporating P and K into the subsoil did not further change wheat yield.