DEPARTMENT OF FOREST SCIENCE
Highlights
1998-1999
This report presents the Vegetation Management
Research Cooperative’s activities in forest vegetation management
research. Highlights for the 1998-99
year include:
· The Herb II study (Spatial Influences on Early Douglas-fir Growth: Interaction of Vegetation Control, Optimum Seedling Quality, and Fertilization) completed its fourth and final year on two sites and third year on three sites. A manuscript detailing results is currently being written for peer review publication.
· The “2 in 2” study (Optimizing Seedling Growth Utilizing Seedling Target Characteristics, Fertilization, and Vegetation Management) completed its second year on three sites and its first year on three others.
· A Manuscript summarizing results from the Fall Oust Trial was published in the Western Journal of Applied Forestry.
· A journal article on results of the Nu-Film-IR study has been accepted by Tree Planters Notes and should be published this coming year.
· A VMRC Technical Report summarizing results and 2 meters in 2 years studies was produced.
· The conifer phytotoxicity study (Phytotoxicity of Common Site Preparation and Release Herbicides on Selected Northwest Conifer Species) completed its first year of growth and results were presented to the Co-op.
· In the last year we have welcomed two additional new cooperators Hancock Timber Resources Group and Pope Resources.
DEPARTMENT OF FOREST SCIENCE
OREGON STATE UNIVERSITY
CORVALLIS, OREGON
97331-5752
PH 503-737-6580
FAX 503-737-1393
INTERNET: roser@fsl.orst.edu
To: VMRC
Cooperators
From: Robin Rose
Date: July
1999
Subject:
1998-99 Annual Report
I am pleased to report in this year's annual report that our membership is growing. We cordially welcome Hancock Timber Resources Group and Pope Resources to the VMRC. The more members we have the better the "co-operation" gets.
Our current studies are working out well. The 2 meters in 2 years studies are growing nicely. We have not achieved an average of two meters in such a short time, but the studies are showing that we have only begun to scratch the surface of the potential growth that exists in Douglas-fir seedlings when fertilizers are used and the vegetation is controlled. Our other studies are doing equally well.
The future of this cooperative looks very good if we continue to focus on several directions. (1) We need to continue to stay focused on our well thought out cooperative objectives. There is always the temptation to "expand" into other areas. Let us stick with what we do best. (2) We need to get "outside the box" more within the context of our objectives. Some VMRC organized trips to our neighbors in the Southeastern U.S. would be a very good idea. There is always something new to learn from other people. (3) We should do some more in-house training within the cooperative in the areas of experimental layout and site selection. And (4) Concentrate more on how to maximize and improve the techniques we now employ in reforestation.
Scott and I thank you all very much for your tremendous support and enthusiasm. Let's keep the pressure on to get better.
Thank you,
Robin Rose
Table Of Contents
Background
& Organization 6
Mission Statement 6
Research Studies 7
Spatial Influences on Early
Douglas-fir Growth: Interaction of Vegetation Control,
Optimum Seedling Quality, and Fertilization. (Herb II) 7
Optimizing Seedling Growth Utilizing
Seedling Target Characteristics, Fertilization,
and Vegetation Management (2 meters in 2 years) 12
Phytotoxicity of Common Site
Preparation and Release Herbicides on Selected Northwest
Conifer Species 21
Plant Autecology Literature
Review 29
New Research Projects 31
Critical Thresholds Study,
Effects of up to Five Years of Consecutive Weed Control
Relative to Growth Losses from Delaying Weed Control for
Douglas-fir and Other
PNW Conifer Species 31
Technology Transfer 34
Plans For 1998-1999 36
Publications of Interest 36