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    Root and Butt / Root and Stem Diseases (3)

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Image Subject Name Scientific Name Description
5492852 Phytophthora root rot Phytophthora cinnamomi Tree with severe symptoms; it will probably die within one year.
5492857 Phytophthora root rot Phytophthora cinnamomi Tree with moderate symptoms; it will probably die within four years.
5492856 Phytophthora root rot Phytophthora cinnamomi Tree with moderate symptoms; it will probably die within four years.
5492854 Phytophthora root rot Phytophthora cinnamomi Tree with severe symptoms; it will probably die within one year.
5492855 Phytophthora root rot Phytophthora cinnamomi Tree with moderate symptoms; it will probably die within four years.
5492853 Phytophthora root rot Phytophthora cinnamomi Tree with severe symptoms; it will probably die within one year.
1236097 Phytophthora root rot Phytophthora cinnamomi
1236098 Phytophthora root rot Phytophthora cinnamomi
2651047 Phytophthora root rot Phytophthora cinnamomi root decay (bark intact)- base of stem. Union County, North Carolina
1137032 Phytophthora root disease of Port Orford cedar Phytophthora lateralis Dying tree, upper Sacramento River, California.
0745018 Phytophthora root rot Phytophthora cinnamomi
0745019 Phytophthora root rot Phytophthora cinnamomi
0745017 Phytophthora root rot Phytophthora cinnamomi
0364080 Phytophthora root and crown rots Phytophthora spp. on Fraser fir in nursery
4823079 Phytophthora root rot Phytophthora cinnamomi Mortality in four year old plantation.
4823085 Phytophthora root rot Phytophthora cinnamomi Mortality of 2-0 bareroot stock in Munson Forest Nursery, Florida, USA.
4823081 Phytophthora root rot Phytophthora cinnamomi Mortality of 2-0 stock in Munson Forest Nursery, Florida, USA
0488102 Phytophthora root rot Phytophthora cinnamomi injury to young tree
1235233 Phytophthora root rot Phytophthora cinnamomi
4824002 Phytophthora root rot Phytophthora cinnamomi Mortality in 13-year old stand.
4824003 Phytophthora root rot Phytophthora cinnamomi Mortality in 4-year old stand
2733025 Phytophthora root rot Phytophthora cinnamomi fading crowns, numerous cones, and short stunted needles and twigs
1236120 Phytophthora root rot Phytophthora cinnamomi
1442067 Phytophthora root rot Phytophthora cinnamomi Healthy (left) diseased (right)
1236178 Phytophthora root rot Phytophthora cinnamomi
1436139 Phytophthora root rot Phytophthora cinnamomi
1236179 Phytophthora root rot Phytophthora cinnamomi
1236121 Phytophthora root rot Phytophthora cinnamomi
2250069 Pythium diseases Pythium spp. in nursery of grand fir
1442068 Phytophthora root rot Phytophthora cinnamomi stand break up due to disease
1235232 Phytophthora root rot Phytophthora cinnamomi
0364056 Phytophthora root rot Phytophthora cinnamomi symptoms on shortleaf pine
5408716 Phytophthora root and crown rots Phytophthora spp. Image shows samples of field soil (25 cm2) from Fraser fir production sites, flooded with 40 ml of distilled water. Rhododendron leaf disks were floated on the water surface as a bait for zoospores of Phytophthora spp.  Leaf disks are typically removed after 24 hours and plated on selective medium for detection of Phytophthora.
5408717 Phytophthora root rot Phytophthora cinnamomi Phytophthora cinnamomi growing from Fraser fir root samples on PARPH-V8 agar, approximately 48 hours after plating.
5408718 Phytophthora root rot Phytophthora cinnamomi Phytophthora cinnamomi growing from Fraser fir root samples on PARPH-V8 agar, approximately 48 hours after plating.
5038043 sudden oak death Phytophthora ramorum Symptoms of P. ramorum on Douglas-fir
1473271 Phytophthora root rot Phytophthora cinnamomi site #70, disease present since 1933 (picture taken 1953)
5261088 Phytophthora root rot Phytophthora cinnamomi
5261089 Phytophthora root rot Phytophthora cinnamomi
1501067 Phytophthora root rot Phytophthora cinnamomi Littleleaf disease; Shortleaf pine
1501060 Phytophthora root rot Phytophthora cinnamomi Littleleaf disease, sampling tools
1501062 Phytophthora root rot Phytophthora cinnamomi Littleleaf disease; crown with stress cones
1501063 Phytophthora root rot Phytophthora cinnamomi Littleleaf disease; crown thinning
1501066 Phytophthora root rot Phytophthora cinnamomi Littleleaf disease
1501068 Phytophthora root rot Phytophthora cinnamomi Littleleaf disease
1501069 Phytophthora root rot Phytophthora cinnamomi Littleleaf disease
1501071 Phytophthora root rot Phytophthora cinnamomi Littleleaf disease; crown thinning
1501074 Phytophthora root rot Phytophthora cinnamomi Littleleaf disease
1501076 Phytophthora root rot Phytophthora cinnamomi Littleleaf disease
1501077 Phytophthora root rot Phytophthora cinnamomi Littleleaf disease
1501064 Phytophthora root rot Phytophthora cinnamomi Littleleaf disease; crown thinning + healthy
1501070 Phytophthora root rot Phytophthora cinnamomi Littleleaf disease
3037014 Phytophthora root rot Phytophthora cinnamomi early stage of disease
3037003 Phytophthora root rot Phytophthora cinnamomi stress crop of cones-little leaf late symptoms
5041045 sudden oak death Phytophthora ramorum
5041046 sudden oak death Phytophthora ramorum
5055035 Phytophthora root rot Phytophthora cinnamomi
5055033 Phytophthora root rot Phytophthora cinnamomi
5055034 Phytophthora root rot Phytophthora cinnamomi
1400148 Phytophthora root and crown rots Phytophthora spp. Fraser fir Christmas tree killed by phytophthora root disease in poorly drained portion of plantation, North Carolina.
1137033 Phytophthora root disease of Port Orford cedar Phytophthora lateralis Stain from POC root disease and galleries of the bark beetle Phleosinus sequoiae Hopkins on the Smith River
1137031 Phytophthora root disease of Port Orford cedar Phytophthora lateralis Dead and Dying cedars on Smith River
1442113 Pythium diseases Pythium spp.
0745020 Phytophthora root rot Phytophthora cinnamomi typical soil profile of susceptible site
4823077 Phytophthora root rot Phytophthora cinnamomi Mortality of first-year seedlings in Munson Forest Nursery, Florida, USA
4823078 Phytophthora root rot Phytophthora cinnamomi Roots of infected nursery seedlings. Note the lack of short lateral roots and presence of black, necrotic and sloughing cortical tissues.
4823082 Phytophthora root rot Phytophthora cinnamomi Resin caked roots of infected seedlings in the field.
4823083 Phytophthora root rot Phytophthora cinnamomi Resin-soaked tap root of seedling infected during its first year in the field.
4823080 Phytophthora root rot Phytophthora cinnamomi Poor seed bed drainage can increase infection risk.
4823086 Phytophthora root rot Phytophthora cinnamomi Healthy tree (left), infected tree (right).
4823087 Phytophthora root rot Phytophthora cinnamomi Yellowing foliage of infected tree.
4823088 Phytophthora root rot Phytophthora cinnamomi 13-year old trees: Fading tree (left), dead tree (center), healthy treee (right).
4823089 Phytophthora root rot Phytophthora cinnamomi Resin soaked tissue.
0745021 Phytophthora root rot Phytophthora cinnamomi typical soil profile of susceptible site

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