Claim · model-written summary
Close spacing caused crown recession and mortality by age five.
- Taxon
- Alnus rubra
Alnus rubrat0 - Treatment
- closer spacingse0
- Outcome
- crown recession and mortalitye0
- Direction
- substantiale0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Early growth rates were rapid and resulted in substantial crown recession and mortality in the closer spacings by age 5 years.”
t0“Alnus rubra”
Title
Effects of irrigation, spacing and fertilization on flowering and growth in young Alnus rubra
C. A. Harrington; D. S. Debell Tree Physiology 1995. doi:10.1093/treephys/15.7-8.427
Other claims from this paper (11)
- Intervention effect Low irrigation gave the greatest fraction of flowering trees and flowers per tree.
- Intervention effect Low irrigation gave the least height and diameter growth.
- Intervention effect Phosphorus fertilization did not affect flowering percentage or five year growth.
- Intervention effect Phosphorus fertilization slightly increased female flower number at age five.
- Intervention effect Wider spacing produced larger trees and higher flowering and survival.
- Association Flowering percentage increased with tree size within irrigation regimes.
- Observation Flowering varied substantially among families.
- Association Tree size and flowering traits had positive but low correlations.
- Association The irrigation effect on flowering differed among families at ages four and five.
- Observation By age six, more trees flowered and irrigation differences were reduced.
- Recommendation Seed production spacing below 2 m was recommended only with roguing by age two to three.