Claim · model-written summary
Seed production spacing below 2 m was recommended only with roguing by age two to three.
- Taxon
- Alnus rubra
Alnus rubrat0 - Outcome
- spacings less than 2 m should only be used in seed production areas if roguing can be done by age 2 to 3 yearse0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spacings less than 2 m should only be used in seed production areas if roguing can be done by age 2 to 3 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.
- Intervention effect Close spacing caused crown recession and mortality by age five.