Testing tree soundness ... possibly using a shigometer. Note: Information from www.fs.fed.us/t-d/pubs/html/97241202/97241202.html : "The Shigometer is a battery-operated, lightweight field ohmmeter developed over many years by Alex Shigo of the USDA Forest Service Northeastern Forest Experiment Station (see figure 4). This instrument generates a pulsed direct current and registers (in thousands of ohms) the resistance to the current as it passes through the wood or bark. Before wood begins...
Topics: instrument, foresthealthprotection, decay, usda, stateandprivateforestry, shigometer, c1985, usfs,...
DPG pointing out discolored inner bark caused by Port Orford cedar root disease. Near Bandon, Oregon. Port-Orford-cedar root disease is best identified by the cinnamon-colored inner bark and cambium that abruptly joins creamy white, healthy inner bark in roots and lower boles. Just prior to tree death, the discolored zone may extend 2 to 5 feet aboveground. This symptom is most readily seen on trees that are wilted or yellow. In trees that have been dead for several months, all the inner bark...
Topics: foresthealthprotection, discoloration, usda, stateandprivateforestry, insectanddiseasecontrol,...
Tree mortality due to white pine blister rust. Photo by: Richard Sniezko Date: c.2000 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for five-needled pines and Port-Orford-cedar, a native...
Topics: blisterrust, Blister Rust, foresthealthprotection, usda, treemortality, stateandprivateforestry,...
White pine blister rust infection. Photo by: Richard Sniezko Date: c.1992 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for five-needled pines and Port-Orford-cedar, a native plant...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, richardsniezko,...
Large white pine blister rust infections on western white pine at Dorena Tree Improvement Center (in SY1982 test). Note orange discoloration on bole. Cottage Grove, Oregon. Photo by: Richard Sniezko Date: c.1992 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, richardsniezko,...
White pine blister rust resistance testing. Dorena Genetic Resource Center, Cottage Grove, Oregon. Photo by: Richard Sniezko Date: c.2004 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, richardsniezko,...
Tree mortality due to white pine blister rust. Photo by: Richard Sniezko Date: c.2000 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for five-needled pines and Port-Orford-cedar, a native...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, richardsniezko,...
Pinus lambertiana (sugar pine) cones. Photo by: Richard Sniezko Date: c.2001 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for five-needled pines and Port-Orford-cedar, a native plant...
Topics: pinuslambertiana, foresthealthprotection, usda, stateandprivateforestry, Dorena Genetic Resource...
White pine blister rust canker. Photo by: Richard Sniezko Date: c.2007 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for five-needled pines and Port-Orford-cedar, a native plant...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, richardsniezko,...
Aspirating spores from a white pine blister rust canker. Photo by: Richard Sniezko Date: c.2000 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for five-needled pines and Port-Orford-cedar,...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, richardsniezko,...
White pine blister rust infection. Photo by: Richard Sniezko Date: c.1995 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for five-needled pines and Port-Orford-cedar, a native plant...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, richardsniezko,...
Jerry Barnes (right) leads a discussion during the 2003 Rustbusters field trip. Photo by: Richard Sniezko Date: August 2003 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for five-needled...
Topics: r6, usda, stateandprivateforestry, 2003, richardsniezko, dorenageneticresourcecenter, region6,...
White pine blister rust canker. Photo by: Richard Sniezko Date: c.2007 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for five-needled pines and Port-Orford-cedar, a native plant...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, richardsniezko,...
White pine blister rust infection. Photo by: Richard Sniezko Date: c.1995 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for five-needled pines and Port-Orford-cedar, a native plant...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, richardsniezko,...
White pine blister rust on a Ribes leaf. Dorena Genetic Resource Center. Cottage Grove, Oregon. Photo by: Richard Sniezko Date: c.2002 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, richardsniezko,...
White pine blister rust on a Ribes leaf. Dorena Genetic Resource Center. Cottage Grove, Oregon. Photo by: Richard Sniezko Date: c.2002 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, richardsniezko,...
White pine blister rust field testing by the Dorena Genetic Resource Center. Photo by: Richard Sniezko Date: c.2007 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for five-needled pines...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, richardsniezko,...
Rustbusters 2003 field trip. Photo by: Richard Sniezko Date: August 2003 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for five-needled pines and Port-Orford-cedar, a native plant...
Topics: r6, usda, stateandprivateforestry, 2003, richardsniezko, dorenageneticresourcecenter, region6,...
White pine blister rust canker on surviving western white pine tree (Family xxx in SY1994 trial) in Dorena Genetic Resource Center blister rust resistance testing. Photo by: Lindsey Fix Date: c.2000 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest...
Topics: r6, usda, lindseyfix, stateandprivateforestry, whitepineblisterrust, treepathogen,...
Large western white pine in Coast Range in northern Oregon along the Devil's Fork of the Wilson River. This is one of few sites known where western white pine still occurs naturally in the Coast Range of Oregon. Natural regeneration of western white pine is relatively abundant in this small area. Photo by: Richard Sniezko Date: c.2000 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection:...
Topics: r6, usda, stateandprivateforestry, treepathogen, devilsfork, dorenageneticresourcecenter, region6,...
Whitebark pine cone. Dorena Genetic Resource Center. Cottage Grove, Oregon. Photo by: Richard Sniezko Date: 2001 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for five-needled pines and...
Topics: r6, usda, stateandprivateforestry, 2001, richardsniezko, dorenageneticresourcecenter, region6,...
Carol Morehead (left) and Amy Eckert near a small block of Asian white pines. Growth is generally very slow at Happy Camp, but resistance is very good. Rustbusters 2005, California. Photo by: Richard Sniezko Date: September 22, 2005 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for...
Topics: amyeckert, usda, stateandprivateforestry, r6, 2005, dorenageneticresourcecenter, region6, usfs,...
White pine blister rust infection. Photo by: Richard Sniezko Date: c.1995 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for five-needled pines and Port-Orford-cedar, a native plant...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, richardsniezko,...
White pine blister rust on a Ribes leaf. Dorena Genetic Resource Center. Cottage Grove, Oregon. Photo by: Richard Sniezko Date: c.2002 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, richardsniezko,...
White pine blister rust on a curled Ribes leaf. Dorena Genetic Resource Center. Cottage Grove, Oregon. Photo by: Richard Sniezko Date: c.2002 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, richardsniezko,...
Contrasting levels of white pine blister rust infection (needle spots) on secondary needles between one-year old seedlings of two families of western white pine six months after September 2004 artificial inoculation at Dorena GRC in: [1] high spotting seedlings in family 14 vs. [2] very low spotting seedling in Family 22. Family 14 is a known high susceptible family; Family 22 is one of the highest resistant full-sib families tested to date. Photo by: Richard Sniezko Date: 2005 Credit: USDA...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, treepathogen, 2005,...
Germinating whitebark pine seedlings Photo by: Richard Sniezko Date: c.2007 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for five-needled pines and Port-Orford-cedar, a native plant...
Topics: r6, usda, seedling, stateandprivateforestry, richardsniezko, dorenageneticresourcecenter,...
Summer 2000 overview of Dorena Tree Improvement Center - greenhouses and blister rust runs. Cottage Grove, Oregon. Photo by: Richard Sniezko Date: Summer 2000 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance...
Topics: r6, usda, stateandprivateforestry, richardsniezko, dorenageneticresourcecenter, region6,...
Katy Mallams, Southwest Oregon Forest Insect and Disease pathologist. Dying Port Orford cedar (Chamaecyparis lawsoniana) with root girdling. Humboldt site. Photo by: Richard Sniezko Date: March 17, 2004 Credit: USDA Forest Service, Region 6, Umpqua National Forest, Dorena Genetic Resource Center. Source: DRGC digital photo collection; courtesy Richard Sniezko, Cottage Grove, Oregon. Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the...
Topics: katymarshall, r6, usda, stateandprivateforestry, dorenageneticresourcecenter, katymallams,...
Looking up the hill from Champion Mine. Umpqua National Forest, Oregon. Note: The last western white pine in this area was killed by blister rust in 1994. Photo by: Richard Sniezko Date: August 16, 2003 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, 2003, richardsniezko,...
Sugar pine seedlings emerging from seed. Photo by: Dave Lines Date: c.2007 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for five-needled pines and Port-Orford-cedar, a native plant...
Topics: r6, usda, seedling, stateandprivateforestry, treepathogen, dorenageneticresourcecenter, region6,...
Field testing sugar pine for white pine blister rust resistance at USDA Forest Service's Happy Camp site Photo by: Deems Burton Date: c.2000 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, treepathogen, dorenageneticresourcecenter,...
Champion Mine. Umpqua National Forest, Oregon. Note: The last western white pine in this area was killed by blister rust in 1994. Photo by: Richard Sniezko Date: August 16, 2003 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, 2003, treepathogen,...
Pollenation bags on western white pine. Dorena Genetic Resource Center's orchard blister rust resistance testing. Cottage Grove, Oregon. Photo by: Richard Sniezko Date: c.2008 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses...
Topics: pollinationbag, r6, usda, stateandprivateforestry, orchard, whitepineblisterrust, richardsniezko,...
Stained inner bark of Port Orford cedar killed by root disease (Phytophthora lateralis). "Port-Orford-cedar root disease is best identified by the cinnamon-colored inner bark and cambium that abruptly joins creamy white, healthy inner bark in roots and lower boles. Just prior to tree death, the discolored zone may extend 2 to 5 feet aboveground. This symptom is most readily seen on trees that are wilted or yellow. In trees that have been dead for several months, all the inner bark tissues...
Topics: r6, innerbark, usda, stateandprivateforestry, cambium, 2004, plantpathogen, richardsniezko,...
L-R: Dean Davis (R5), Sally Long, Bob Danchok. White pine blister rust resistance field testing by the Dorena Genetic Resource Center. Photo by: Richard Sniezko Date: c.2000 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses...
Topics: r6, usda, stateandprivateforestry, deandavis, whitepineblisterrust, richardsniezko, bobdanchok,...
White pine blister rust on pine needles. Dorena Genetic Resource Center. Cottage Grove, Oregon. Photo by: Richard Sniezko Date: c.2011 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, richardsniezko,...
Dean Davis discussing southwestern white pine (Pinus strobiformis) seedlings planted at Happy Camp, California. Rustbusters 2005. Photo by: Richard Sniezko Date: September 22, 2005 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena...
Topics: r6, usda, stateandprivateforestry, deandavis, treepathogen, seedlings, 2005,...
Syringe used for pine pollen in the early days. Dorena Genetic Resource Center. Cottage Grove, Oregon. Photo and caption by: Jerry Barnes Date: c.1964 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: Gerald Barnes collection; courtesy Richard Sniezko, Cottage Grove, Oregon. Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for...
Topics: r6, usda, stateandprivateforestry, treepathogen, dorenageneticresourcecenter, region6,...
Resistance testing of western white pine (Pinus monticola) at Dorena Genetic Resource Center. Two-year old seedlings were inoculated with Cronartium ribicola spores in fall 2002 - photo shows mortality two years after inoculation. Trees are followed for five years after inoculation to evaluate genetic resistance to white pine blister rust. Cottage Grove, Oregon. Photo by: Sally Long Date: 2004 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo...
Topics: r6, usda, stateandprivateforestry, 2004, whitepineblisterrust, treepathogen,...
White pine blister rust resistance testing. Dorena Genetic Resource Center, Cottage Grove, Oregon. Photo by: Richard Sniezko Date: c.2004 Credit: USDA Forest Service, Region 6, Umpqua National Forest, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, treepathogen, dorenageneticresourcecenter,...
Rustbusters 2003 group photo. Photo courtesy of: Richard Sniezko Date: August 2003 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for five-needled pines and Port-Orford-cedar, a native...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, 2003, richardsniezko,...
Inoculation chamber; fogging pine seedlings artificially infected with white pine blister rust. Dorena Genetic Resource Center. Cottage Grove, Oregon. Photo by: Richard Sniezko Date: c.2002 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region....
Topics: disease, treepathogen, usda, stateandprivateforestry, artificialinoculation, fogging,...
Inoculation chamber; fogging pine seedlings artificially infected with white pine blister rust. Dorena Genetic Resource Center. Cottage Grove, Oregon. Photo by: Richard Sniezko Date: c.2002 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region....
Topics: disease, treepathogen, usda, stateandprivateforestry, whitepineblisterrust, fogging,...
Port Orford cedar (Chamaecyparis lawsoniana) seed source. Weaverville, California. Photo by: Richard Sniezko Date: c.2005 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for five-needled...
Topics: r6, usda, stateandprivateforestry, seedsource, dorenageneticresourcecenter, region6, weaverville,...
Pinus lambertiana (sugar pine) grafting at the Dorena Genetic Resource Center. Cottage Grove, Oregon. Photo by: Richard Sniezko Date: January 2001 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding...
Topics: r6, usda, stateandprivateforestry, pinuslambertiana, 2001, richardsniezko,...
White pine blister rust on a Ribes leaf. Dorena Genetic Resource Center. Cottage Grove, Oregon. Photo by: Richard Sniezko Date: c.2002 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, richardsniezko,...
Delbert Albin with inoculation tents; inoculating pines with white pine blister rust using infected Ribes leaves. Dorena Genetic Resource Center. Cottage Grove, Oregon. Photo by: Richard Sniezko Date: c.2002 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific...
Topics: r6, usda, stateandprivateforestry, whitepineblisterrust, treepathogen, dorenageneticresourcecenter,...
Western white pine pollination work. Dorena Genetic Resource Center's orchard blister rust resistance testing. Cottage Grove, Oregon. Photo by: Richard Sniezko Date: c.2008 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses...
Topics: r6, usda, stateandprivateforestry, orchard, whitepineblisterrust, treepathogen,...
Dean Davis giving overview of sugar pine blister rust resistance work at Happy Camp, California. Rustbusters 2005. Photo by: Richard Sniezko Date: September 22, 2005 Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center. Source: DRGC online photo collection: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease...
Topics: r6, usda, stateandprivateforestry, deandavis, treepathogen, 2005, dorenageneticresourcecenter,...
