Claim · model-written summary
Some experimental growth reductions approximated those following Swaine jack-pine sawfly defoliation.
- Taxon
- jack pine (Pinus banksiana Lamb.)
Pinus banksianat0 - Interactor
- Swaine jack-pine sawfly (Neodiprion swainei Midd.)Neodiprion swaineie0pest
- Outcome
- Growth reductionse0
- Direction
- approximatede0
- Comparator
- defoliation by the Swaine jack-pine sawflye0
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleTreatmentSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth reductions resulting from some of the treatments approximated that following defoliation by the Swaine jack-pine sawfly (Neodiprion swainei Midd.).”
t0“JACK PINE (PINUS BANKSIANA LAMB.)”
Title
SOME EFFECTS OF ARTIFICIAL DEFOLIATION ON THE GROWTH OF JACK PINE (PINUS BANKSIANA LAMB.)
L. C. O'Neil Canadian Journal of Botany 1962. doi:10.1139/b62-026
Other claims from this paper (10)
- Intervention effect Removing two-year-old foliage had no appreciable effect on tree growth.
- Intervention effect Removing three-year-old foliage had no appreciable effect on tree growth.
- Intervention effect Joint removal of two- and three-year-old foliage reduced height growth.
- Intervention effect Removal of one-year-old foliage reduced height growth.
- Mechanism Current foliage was essential for normal height, diameter and shoot growth.
- Intervention effect Removing current foliage induced high bud mortality.
- Intervention effect Removing current foliage induced profuse adventitious growth.
- Intervention effect Removing current foliage reduced shoot elongation rate.
- Intervention effect Trees retaining only current foliage had marked reductions in height, diameter and shoot growth.
- Intervention effect Complete defoliation caused tree death shortly afterward.