Claim · model-written summary
Needle nitrogen concentrations increased to 1.84 per cent in 1985 following refertilization with NPK.
- Taxon
- Lodgepole Pine
Pinus contortat0 - Treatment
- refertilization with NPKe6
- Outcome
- needle nitrogen concentrationse6
- Direction
- increasede6
- Value
- 1.84 per cente6
- Comparator
- controle0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lodgepole Pine (Pinus contorta Dougl.)”
e0“was refertilized in 1985 with control, P, PK and NPK treatments consisting of 60 kg ha −1 phosphorus, 100 kg ha −1 potassium and 200 kg ha −1 nitrogen”
e6“Similarly, needle nitrogen concentrations increased to 1.84 per cent in 1985 following refertilization with NPK”
Title
E. D. WELLS; H. G. MILLER Forestry An International Journal of Forest Research 1994. doi:10.1093/forestry/67.2.149
Other claims from this paper (6)
- Intervention effect Height and diameter growth of lodgepole pine increased significantly in all refertilization treatments between 1985 and 1991 compared with control.
- Intervention effect Growth response of lodgepole pine was greatest in the PK treatment and least in the P treatment.
- Intervention effect Needle weights did not respond uniformly to any of the refertilization treatments compared with control.
- Intervention effect Needle phosphorus concentrations increased to between 0.20 and 0.23 per cent following refertilization with P, PK and NPK.
- Intervention effect Needle potassium concentrations increased sharply to 0.60 per cent in 1985 following refertilization with PK and NPK.
- Observation Height and diameter growth did not decrease significantly after the needle nutrient peaks, suggesting nutrient levels stayed adequate for optimum growth.