The Oregon Champion madrone
gary.maguireThe Oregon Champion madrone
Contact: Gary Chastagner, 253-445-4528 | WSU Puyallup Research & Extension Center,2606 West Pioneer, Puyallup, WA, 98371-4998 USA
Contact: Gary Chastagner, 253-445-4528 | WSU Puyallup Research & Extension Center,2606 West Pioneer, Puyallup, WA, 98371-4998 USA
Arbutus menziesii
Washington
The largest Pacific madrone in Washington State is located in Port Angeles on the Olympic Peninsula. It has an interesting history.
The Port Angeles Madrona by James Causton
Oregon
California
BC
Vancouver Island Big Trees Blog entry on Arbutus, December 2010
Other Arbutus species
Contact: Gary Chastagner, 253-445-4528 | WSU Puyallup Research & Extension Center,2606 West Pioneer, Puyallup, WA, 98371-4998 USA
Hello,
My name is Joey Hulbert and I am a forest pathologist in training. I recently completed a MS at Oregon State University and now I am prepping to move to South Africa for a PhD with Dr. Micahel Wingfield at FABI.
For the PhD, we plan to survey the indigenous forests of South Africa for Phytopthora species with the help of the public. We want to create a citizen science program that teaches the public about forest pathology and invites them to help sample the trees in their communities and near-by forests. The PhD will be funded but we are trying to raise support for starting the citizen science program. To do this we have launched a crowdfunding campaign.
I am reaching out to you with hope that you will share this project with your social networks and anyone who may see the value in this project. Please help us spread the word!
The below link will take you to the project. There is a 5-minute video that I put together to summarize the scope and value.
Discovering plant destroyers in South Africa
https://experiment.com/projects/discovering-plant-destroyers-in-south-africa-with-citizen-science
Welcome to the WSU Puyallup ornamental bulb plant pathology research website. Here you will find information on about our Disease Management Program for ornamental flower bulb crops.
We are currently working with growers of many different varieties, including: daffodil, dahlia, iris, lily, peony, and tulip. Please contact-us for more information or if you’re interested in participating in our Disease Management Program.
Research and education on diseases of ornamental flower bulbs has been conducted at WSU Puyallup for over 80 years. As the flower bulb industry has changed with the increasing urbanization of bulb-growing regions and concern over the potential environmental impacts from pesticides, we continue to direct our research toward solutions that enable growers to minimize crop losses from plant diseases and reduce the need for pesticides.
Currently, this internationally-recognized research program focuses on the development of DNA-based assays to quantify inoculum levels of soil-borne pathogens and determine appropriate control methods. We are also evaluating reduced-risk fungicides and alternative approaches to control pre- and post- harvest diseases that affect the economic viability of the flower bulb industry.
Growers from Washington, Oregon, California, and British Columbia are provided the latest research information at annual Field Days and a Pacific Northwest (PNW) Flower Bulb Conference organized by WSU.
Commercial flower bulb production in the PNW began over 100 years ago, and in the 1920’s, growers also supplied bulbs to greenhouse forcers in other regions of the U.S., Canada and Europe. Today, the production of both ornamental bulbs and cut flowers represents an important high-value specialty crop in the United States with 90% of the domestic production of tulips, daffodils, bulbous iris and Asiatic/oriental lilies occurring in the coastal areas of Washington, Oregon and northwestern California. In 2005, the wholesale value of flower bulb crops in the U.S. totaled over $235 million.
Currently, the majority of Washington’s specialty cut flower production occurs primarily on small farms in four counties: Clark, Lewis, Pierce, and Skagit. A WSU 2012 survey of Washington cut flower growers indicated that 98% of the growers farmed less than 10 acres and 51% of the growers farmed less than an acre.
Another WSU survey estimated there were 160 farmers markets in Washington in 2009 and 93% of these markets offered cut flowers for sale. Flowers from ornamental bulb crops are currently an important staple item at these local markets.
WSU Puyallup Research & Extension Center, 2606 West Pioneer, Puyallup, WA, 98371-4998 USA
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Rita L. Hummel, Marianne Elliott, Gary Chastagner, Robert E. Riley, Kathy Riley, and Annie DeBauw, Washington State University, Puyallup Research and Extension Center, 2606 W. Pioneer, Puyallup, WA 98371; klriley@wsu.edu
Research information demonstrating the effects of various cultural practices on host susceptibility to Phytophthora ramorum is generally lacking and thus limits the development of an integrated approach to managing diseases caused by this pathogen in irrigated nursery systems. Rhododendron spp. have accounted for about 78% of the plants associated with P. ramorum-positive nursery finds in Washington State. Nitrogen fertility levels have been reported to influence disease in some Phytophthora disease pathosystems, but data is not available for the P. ramorum-rhododendron pathosystem.
During 2008 we investigated the dynamics between nitrogen application rates and the susceptibility of ‘English Roseum’, ‘Cunningham’s White’ and ‘Compact P.J.M.’ to P. ramorum. One-gallon plants were potted into 3-gallon containers. The growing medium was 100% Douglas-fir bark with micromax incorporated at the rate of 1.75 lbs/yd3. Plants were placed on a gravel nursery bed and watered as needed with overhead sprinkler irrigation. Residual fertilizer in the media was depleted, then ammonium nitrate fertilizer at 100, 300 and 600 ppm N was applied in liquid form twice a week to each of eight plants per cultivar starting on June 2nd. The same rate of P (potassium phosphate) and K (potassium sulfate), 100 and 200 ppm, respectively, was applied at each fertilization. Commencing with fertilizer application, the plants were switched to a drip irrigation system. In early October, plant growth, visual quality and leaf color were measured. At the same time, fully mature, current season leaves from each plant were harvested for determination of leaf tissue nitrogen content and P. ramorum inoculations.
Six detached leaves from each plant were inoculated with suspensions of zoospores from an NA1 lineage rhododendron isolate of P. ramorum by pipetting a 10 ul drop of suspension onto the lower leaf surface. The leaf tissue beneath drops on three leaves was injured using an insect pin, while the tissue beneath each drop on the other leaves was left unwounded. The leaves were then incubated at 19-20 C.
As expected, shoot growth and plant quality indices increased with nitrogen fertility. Based on an overall analysis of lesion size after 10 days, there was a significant difference in the susceptibility of the three cultivars to P. ramorum. “Compact P.J.M.’ had the smallest lesions, while ‘English Roseum’ had the largest. Lesions developed on all the wounded and unwounded inoculation sites on the ‘English Roseum’ and lesion size increased with increasing nitrogen fertility. Nitrogen fertility had no effect on lesion size on the other two cultivars.
in
Proceedings of the Sudden Oak Death Fourth Science Symposium 2010
Susan J. Frankel, John T. Kliejunas, and Katharine M. Palmieri, tech. coords.
Gen. Tech. Rep. PSW-GTR-229. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. 378 p
Abstract pdf | Poster pdf |