|Release Treatments using
Herbicides and/or Thinning
Once the forest stand is established, it is desirable to maintain the best trees, your future crop
trees, in a condition relatively free from competition from other conifers and/or hardwood species.
A significant factor in the relative economic value of your forest is dependent upon how quickly your
crop trees reach a merchantable size. The time necessary to meet where they are of
In the case of an herbicide release treatment, a prescription must account for many factors,
The species of competition, the target species.
The most appropriate chemical to treat the specific target.
The time of year to apply the herbicide.
The method in which to apply the herbicide.
The specific contractor to use for each project.
Pre-commercial thinning (PCT) is the removal of less desirable trees in order that the crop trees will
be able to maximize their potential growth, where there is no net return from the trees that are
removed. Again, there are many decisions to be made in assuring a successful PCT project.
Some factors to consider are:
The age at which to perform the first thinning.
The desired species mix to retain.
The desired number of trees per acre to retain, or the average spacing between crop trees.
The method of thinning and follow-up treatment of the cut trees.
The appropriateness of utilizing machinery such as a masticator for thinning older plantations.
There may be cost-share funding available to help defer much of the expense of these treatments.
Applied Forest Management
200 Litton Drive, Suite 310
Grass Valley, Ca 95945