Claim · model-written summary
Potassium fertilization raised foliar K from 1.01 to 1.21% over five years, with year-to-year variation.
- Taxon
- black cherry
Prunus serotinat0 - Treatment
- Potassium fertilizatione0
- Outcome
- average foliar Ke0
- Direction
- increasede0
- Value
- 1.21%e0
- Qualifier
- considerable year-to-year variatione0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potassium fertilization increased average foliar K from 1.01 to 1.21% over the 5-year period, though there was considerable year-to-year variation.”
t0“black cherry”
Title
Response of young black cherry stands to fertilization
L. R. Auchmoody Canadian Journal of Forest Research 1982. doi:10.1139/x82-046
Other claims from this paper (11)
- Intervention effect Nitrogen alone increased height, diameter, and basal area growth.
- Intervention effect Phosphorus combined with nitrogen increased height, diameter, and basal area growth.
- Intervention effect Adding potassium to nitrogen and phosphorus did not produce an additional growth response.
- Observation Growth responses were greatest in the first two years, while height and diameter increases lasted four to five years.
- Intervention effect First-year maximum growth rates occurred with 112 kg N/ha and 49 kg P/ha.
- Intervention effect Sustained responses in later years required 224 kg N/ha and 49 kg P/ha.
- Intervention effect Seedling and sapling stands had similar annual increases in height and diameter after fertilization.
- Observation Saplings had greater absolute basal area response than seedlings.
- Intervention effect Nitrogen fertilization raised foliar nitrogen from 2.51 to 3.94% in year one.
- Observation Foliar nitrogen then declined to control level by year four.
- Intervention effect Phosphorus fertilization raised foliar P from 0.12 to 0.21% in year one, with further increases through year five.