IntensIve sIlvIculture - Forest Science Labs - Research Network ...

Silvicultural Treatment Glossary
chemical preparation – is included as a keyword under site preparation for publications that examine the
use of chemical means, including the use of pre-emergent herbicides, to control unwanted vegetation in
preparation for planting.
chemical release – is included as a keyword under release treatments for publications that examine the
use of chemical techniques (i.e. herbicides) to control unwanted vegetation in favour of the growth of
Douglas-fir trees. See release treatments for further specifications for the use of this keyword.
commercial thinning – is included as a keyword under thinning for publications that examine thinning
treatments which produce merchantable timber. This keyword is included only if it could be conclusively
determined from the abstract that the thinning was a commercial thinning.
fertilization – is included as a keyword for publications that examine the use of fertilizers to improve
growth and site nutrient status. This includes publications that study the use of both synthetic or biosolid
fertilizers.
genetic tree improvement – is included as a keyword for publications that deal with tree breeding
(including outcrossing and self pollination), progeny development, and early selection testing to create
genetically improved stock. Sub-keywords under genetic tree improvement: tree grafting.
manual release – is included as a keyword under release treatments for publications that examine the
use of manual techniques to control unwanted vegetation in favour of the growth of Douglas-fir trees.
This can include manual removal (i.e. cutting) of unwanted vegetation, mulching, or animal grazing. See
release treatments for further specifications of the use of this keyword.
mechanical preparation – is included as a keyword under site preparation for publications that
examine mechanical manipulations to a site in preparation for planting. This includes but is not limited to
bedding, chopping, disking, scarifying, and raking.
nursery fertilization – is included as a keyword under nursery operations for publications that
investigate seedling fertilization in the nursery. This is included as a separate keyword to distinguish it
from fertilization of trees in actual forest plantations.
nursery operations - is included as a keyword for publications that investigate treatments dealing with
seedling production in nurseries. This treatment class includes anything before the actual planting of the
seedling in the ground, for example, lifting, pre-planting storage or transportation. Also included are
publications that compare the success of various types of planting stock (since planting stock is the result
of nursery operations and not the planting operations themselves). Publications that examine
correlations between tree characteristics in the nursery and success after outplanting are also included
under nursery operations due to the implications for nursery culling. Sub-keywords under nursery
operations: nursery fertilization, nursery pruning.
nursery pruning – is included as a keyword under nursery operations for publications that deal with the
pruning of seedlings in the nursery. This is included as a separate keyword to distinguish it from the
pruning of trees in actual forest plantations.
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