- Research & Extension
- Ecological and Environmental Landscapes
- Sustainable Food & Farming Systems
- About Us
- Undergraduate Students
- Graduate Students
- Why Choose a Horticulture Degree?
- Current Students
- Horticulture Club
- Pi Alpha Xi
- Turf Club
- VITIS Club
Content tagged as Christmas Trees
Christmas tree specialist, Chal Landgren, gives an update of shipping and exporting issues, disease and pest management and current resources for growers.
2012 update-christmas-tree-topics from Oregon State University Department of Horticulture To view the PowerPoint presentation, click on...
A report on a current marketing outreach campaign which partners Christmas tree growers in Oregon and Washington with Oregon State University extension agents to promote real Christmas trees in major consumer markets.
To view the article, click on the attachment link. SEPTEMBER 2012 ▲ DIGGER Michael C. Bondi Extension Regional Director Oregon...
Researchers report on a study conducted to test the efficacy of soil additives in promoting plant growth and reducing mortality. The species included in the trial were Hydrangea macrophylla ‘Endless Summer’, Berberis thunbergii ‘Rose Glow’, and noble fir (Abies procera).
To view the article, click on the attachment link. JUNE 2012 ▲ DIGGER Chal Landgren Christmas Tree Specialist Oregon State University...
A systems approach for the production of healthy nursery stock. The manual, published by the Oregon Association of Nurseries, is divided into 3 main parts. A systems approach introduction, voluntary best practices for your nursery, and the next step: systems approach certification.
To view the article, click on the attachment link. Oregon Associaton of Nurseries, 2012 Dr. John A. Griesbach Plant Pathologist Owner of...
A discussion about live plant imports as an important invasion pathway for non-native plant pests. The authors discuss the effect of current regulation, the need for updated regulation, and the recent and proposed changes to plant import regulation.
To view the article, click on the attachment link. Front Ecol Environ 2012; 10(3): 135–143 Andrew M Liebhold US Department of...
A comprehensive guide for forest managers, Christmas tree growers, and forest-tree nursery operators in Oregon and Washington on sudden oak death, the disease caused by the recently introduced Phytophthora ramorum.
To view the article, click on the attachment link. Oregon State University Extension Service EM 8877 • April 2006 E.M Goheen USDA...
Research was conducted at Oregon State University North Willamette Research and Extension Center with the objective of determining whether the addition of foliar fertilization would benefit a Christmas tree plantation or container-grown conifer operation.
To view the article, click on the attachment link. AUGUST 2010 ▲ DIGGER FARWEST EDITION Pages 115-120 Chal Landgren Christmas Tree...
The Effects of Methyl Bromide Alternatives on Soil and Seedling Pathogen Populations, Weeds, and Seedling Morphology in Oregon and Washington Forest Nurseries
Fumigation treatments (a conventional methyl bromide – chloropicrin application and reduced-rate alternative fumigant treatments) and a nonfumigated treatment were evaluated at forest nurseries in Oregon and Washington for their effects on soil pathogen populations, weeds, and seedling morphology.
To view the article, click on the attachment link. Can. J. For. Res. Vol. 41, 2011 J.E. Weiland A. Davis B.R. Beck USDA-ARS...
Influence of Isolation Method on Recovery of Pythium Species From Forest Nursery Soils in Oregon and Washington
In an attempt to identify Pythium species (common dampening off pathogens) associated with forest nursery soils, field surveys were conducted at three forest nurseries (two in Oregon and one in Washington) in 2008 using three isolation methods.
To view the article, click on the attachment link. Plant Disease / May 2011 Pages 547-553 Jerry E. Weiland USDA-ARS Horticultural Crops...
Effect of Potting Media Component on the Infectivity of Metarhizium anisopliae against the Black Vine Weevil (Coleoptera: Curculionidae)
The purpose of this study was to determine the persistence, measured as efficacy against BVW larvae, of M. anisopliae in five (coir, fir bark, hemlock bark, peat moss and perlite) common components of soilless potting media.
To view the article, click on the attachment link. J. Environ. Hort. 24(2):91–94. June 2006 Denny J. Bruck USDA-ARS Horticultural...