| Image |
Descriptor |
Description |
Photographer |
| 0758074 |
Control |
Group of Texas live oaks protected from spread of fungus via root grafts by trenching |
William M. Ciesla |
| 1458010 |
Control |
treating with Tordon |
North Carolina Forest Service Archive |
| 1501035 |
Control |
Oak wilt, trenching at Whiskey Canyon Ranch to eliminate root grafts |
Paul A. Mistretta |
| 1501036 |
Control |
Oak wilt, ditch-witch trench at the LBJ Ranch to eliminate root grafts |
Paul A. Mistretta |
| 1501037 |
Control |
Oak wilt, trenching at Whiskey Canyon Ranch to eliminate root grafts |
Paul A. Mistretta |
| 1501038 |
Control |
Oak wilt, trenching at Whiskey Canyon Ranch to eliminate root grafts |
Paul A. Mistretta |
| 1301040 |
Control |
Vibratory plow used for disruption of root grafts to control oak wilt. |
Joseph O'Brien |
| 3226034 |
Control |
bulldozer trenching to break root grafting between infected and noninfected trees |
Ronald F. Billings |
| 3226035 |
Control |
bulldozer trenching to break root grafting between infected and noninfected trees |
Ronald F. Billings |
| 3227017 |
Control |
trenching for severing root grafts between infected and uninfected trees |
Ronald F. Billings |
| 3227021 |
Control |
trenching for severing root grafts between infected and uninfected trees |
Ronald F. Billings |
| 3227019 |
Control |
trenching for severing root grafts between infected and uninfected trees |
Ronald F. Billings |
| 5030071 |
Control |
Control of oak wilt by uprooting stumps of oak killed by Ceratocystis fagacearum, to prevent root-root spread. Chequamegon-Nicolet National Forest. |
Joseph O'Brien |
| 5030072 |
Control |
Oak wilt control by uprooting stumps of trees killed by oak wilt, to prevent root-root transmission. Chequamegon-Nicolet National Forest. |
Joseph O'Brien |
| 5030073 |
Control |
Oak wilt control by uprooting stumps of trees killed by Ceratocystis fagacearum, to prevent root-root transmission of the pathogen. Chequamegon-Nicolet National Forest. |
Joseph O'Brien |
| 5030075 |
Control |
Boulder-strewn terrain where oak wilt control using a vibratory plow is not an option. Root disruption by uprooting stumps may provide some control of root-root spread of the pathogen on such sites. |
Joseph O'Brien |
| 5030077 |
Control |
Uprooted stump of Quercus sp. to control spread of oak wilt through root systems. This may be a useful technique where vibratory plowing or trenching is impossible. |
Joseph O'Brien |
| 5030078 |
Control |
Uprooted stump with roots severed to prevent root-root transfer of the oak wilt pathogen in glacial till soils. Chequemegon-Nicolet National Forest. |
Joseph O'Brien |
| 5030079 |
Control |
An uprooted stump of a tree killed by oak wilt. Uprooting stumps and severing root connections may help to prevent spread of oak wil in situations where vibratory plowing or trenching is not feasible. |
Joseph O'Brien |
| 5030081 |
Control |
Stump of a tree killed by oak wilt, with all roots severed to prevent root-root transfer of the pathogen. |
Joseph O'Brien |
| 5039061 |
Control |
oak wilt control trench with trencher |
Joseph O'Brien |
| 5039062 |
Control |
control trench |
Joseph O'Brien |
| 5039087 |
Control |
trench line |
Joseph O'Brien |
| 5039070 |
Control |
oak wilt injection |
Joseph O'Brien |
| 5042040 |
Control |
vibratory plow line; low impact |
Joseph O'Brien |
| 5040023 |
Control |
tree injection |
Joseph O'Brien |
| 5040024 |
Control |
tree injection |
Joseph O'Brien |
| 5040025 |
Control |
Alamo fungicide set up |
Joseph O'Brien |
| 5040027 |
Control |
herbicide application |
Joseph O'Brien |
| 5040028 |
Control |
chopping to check the cambium |
Joseph O'Brien |
| 5038014 |
Culture |
|
Joseph O'Brien |
| 5034086 |
Display or Sign |
oak wilt billboard |
Joseph O'Brien |
| 5030070 |
Display or Sign |
Sign warning not to gather firewood, to prevent transfer of oak wilt, on Chequamegon-Nicolet National Forest. |
Joseph O'Brien |
| 5030084 |
Display or Sign |
Oak wilt treatment site; Sign forbidding firewood gathering, to prevent spread of oak wilt. |
Joseph O'Brien |
| 4215058 |
Display or Sign |
billboard in Minnesota informing public |
D. W. French |
| 3227020 |
Equipment |
trenching machineused to seperate infested areas |
R. Scott Cameron |
| 5030068 |
Equipment |
Trenching machine used in establishing root graft disruption lines for oak wilt control. Exhibited during the forest pathology field trip of the American Phytopathological Society, 2003, near Shawano, WI. |
Joseph O'Brien |
| 5034061 |
Equipment |
Vibratory plow with a five foot blade, used for disrupting root graft connections for control of oak wilt. Entomologist Jim Hanson on the Cat |
Joseph O'Brien |
| 2912094 |
Equipment |
caterpillar pulling trench to disrupt root grafting, Southern Forest Insect Work Conference Field Trip, near Conly Ranch, Texas |
G. Keith Douce |
| 2912095 |
Equipment |
bulldozer pulling subsoiler to break root grafts. taken during Southern Forest Insect Work Conference Field Trip near San Antonio, Texas USA |
G. Keith Douce |
| 5040020 |
Equipment |
trencher |
Joseph O'Brien |
| 3066036 |
Feature(s) |
transmission is mainly through root grafts |
James Solomon |
| 3227018 |
Feature(s) |
root grafts |
Ronald F. Billings |
| 3226028 |
Feature(s) |
root grafts |
Ronald F. Billings |
| 1501040 |
Feature(s) |
Oak wilt may move through root grafts between trees similar to this live oak root grafting |
Paul A. Mistretta |
| 0758076 |
Feature(s) |
Root grafts on Texas live oak. These are the main means by which oak wilt spreads. |
William M. Ciesla |
| 4214001 |
Feature(s) |
close-up view of fungal mat on peeled stem |
Minnesota Department of Natural Resources Archive |
| 5038013 |
Feature(s) |
Chalara anamorph |
Joseph O'Brien |
| 1501051 |
Field |
Oak wilt, infra-red photo |
Paul A. Mistretta |
| 0725093 |
Fruiting Bodies |
Sporulating mat on red oak killed by Ceratocystis fagacearum. |
John N. Gibbs |
| 1949014 |
Fruiting Bodies |
Mature mycelial mat of Ceratocystis fagacearum just under the bark of a wilted Quercus coccinea tree. |
C.E. Seliskar |
| 1509100 |
Infestation |
Oak wilt |
USDA Forest Service - Region 8 Archive |
| 1501054 |
Infestation |
Oak wilt center |
Paul A. Mistretta |
| 1501055 |
Infestation |
Oak wilt center, Kerrville State Park |
Paul A. Mistretta |
| 0758073 |
Infestation |
Oak killed by oak wilt. |
William M. Ciesla |
| 3226031 |
Infestation |
infection centers - aerial view |
Ronald F. Billings |
| 3036033 |
Infestation |
oak wilt at edge of woodland St. Paul, MN |
Robert L. Anderson |
| 4215059 |
Infestation |
mortality center of oak stand |
D. W. French |
| 5005031 |
Management |
Mauget Generation II microinjector; For injecting propiconizole fungicide for oak wilt prevention in central Texas |
Ronald F. Billings |
| 5034085 |
People |
Michigan DNR workshop on identifying and controlling oak wilt. |
Joseph O'Brien |
| 5039071 |
People |
oak wilt investigation, Bob Heyd |
Joseph O'Brien |
| 0758077 |
Research |
Color infrared aerial photo taken from a U-2 showing patterns of forest vegetation and group of trees killed by oak wilt. |
William M. Ciesla |
| 0758081 |
Research |
Color infrared panoramic aerial photo taken from a U-2 showing distribution of forest vegetation and trees killed by oak wilt. |
William M. Ciesla |
| 5039083 |
Sexual Spore |
spore mat |
Joseph O'Brien |
| 5030086 |
Sexual Spore |
spore pad |
USDA Forest Service - Forest Health Protection - St. Paul Archive |
| 4215064 |
Sign |
spore mat which forms only in red oak group |
Fred Baker |
| 1501039 |
Sign |
Oak wilt, old (6 mos +) pressure pad on live oak |
Paul A. Mistretta |
| 2252009 |
Sign |
fungal mat |
T.W. Bretz |
| 2635026 |
Sign |
close-up view of fungal mat on peeled stem |
USDA Forest Service Archive |
| 5040033 |
Sign |
|
Joseph O'Brien |
| 5040017 |
Survey |
|
Joseph O'Brien |
| 5039084 |
Symptoms |
sprout symptoms |
Joseph O'Brien |
| 5039073 |
Symptoms |
oak wilt killed trees behind house |
Joseph O'Brien |
| 5039074 |
Symptoms |
|
Joseph O'Brien |
| 5039079 |
Symptoms |
oat wilt pocket in woodlot |
Joseph O'Brien |
| 5039080 |
Symptoms |
leaf symptoms |
Joseph O'Brien |
| 5039081 |
Symptoms |
|
Joseph O'Brien |
| 5045006 |
Symptoms |
|
Joseph O'Brien |
| 5045080 |
Symptoms |
crown symptoms |
Joseph O'Brien |
| 5045081 |
Symptoms |
|
Joseph O'Brien |
| 5045082 |
Symptoms |
oak wilt pocket |
Joseph O'Brien |
| 5045083 |
Symptoms |
|
Joseph O'Brien |
| 5046003 |
Symptoms |
tree with close-up of leaves |
Joseph O'Brien |
| 5046017 |
Symptoms |
|
Joseph O'Brien |
| 5055016 |
Symptoms |
|
Joseph O'Brien |
| 5202057 |
Symptoms |
Active oak wilt pocket, early July, Eau Claire Co., WI |
Steven Katovich |
| 5262015 |
Symptoms |
|
Division of Plant Industry Archive |
| 5265044 |
Symptoms |
|
Division of Plant Industry Archive |
| 5038015 |
Symptoms |
staining in oak |
Joseph O'Brien |
| 5038074 |
Symptoms |
Oak wilt crown symptoms. |
Joseph O'Brien |
| 5039063 |
Symptoms |
crack in bark |
Joseph O'Brien |
| 5039064 |
Symptoms |
crown symptoms |
Joseph O'Brien |
| 5039065 |
Symptoms |
crown symptoms and leaf casting |
Joseph O'Brien |
| 5039089 |
Symptoms |
wilting symptoms |
Joseph O'Brien |
| 5039095 |
Symptoms |
expanding oak wilt pocket |
Joseph O'Brien |
| 5039096 |
Symptoms |
aerial photo with highlighted pockets of oak wilt |
Joseph O'Brien |
| 5039097 |
Symptoms |
aerial photo- small pocket of wilt |
Joseph O'Brien |
| 5039098 |
Symptoms |
|
Joseph O'Brien |
| 5039099 |
Symptoms |
trees in July |
Joseph O'Brien |
| 5039100 |
Symptoms |
same trees in image number 5039099 one month later- August |
Joseph O'Brien |
| 5040002 |
Symptoms |
crown symptoms |
Joseph O'Brien |
| 5040010 |
Symptoms |
grafted roots |
Joseph O'Brien |
| 4215065 |
Symptoms |
foliar symptoms on bur oak |
Fred Baker |
| 4215066 |
Symptoms |
foliar symptoms on northern red oak |
D. W. French |
| 4215060 |
Symptoms |
rapidly wilting red oak |
Fred Baker |
| 4215061 |
Symptoms |
white oaks wilt over many years and may recover |
Fred Baker |
| 4215062 |
Symptoms |
vascular discoloration in red oak |
Fred Baker |
| 4215063 |
Symptoms |
vascular discoloration in white oak |
D. W. French |
| 4214002 |
Symptoms |
center of dead/dying trees |
Minnesota Department of Natural Resources Archive |
| 4214003 |
Symptoms |
infection center |
Minnesota Department of Natural Resources Archive |
| 4214004 |
Symptoms |
infection center |
Minnesota Department of Natural Resources Archive |
| 4213097 |
Symptoms |
leaf symptoms |
Minnesota Department of Natural Resources Archive |
| 4213098 |
Symptoms |
leaf symptoms |
Minnesota Department of Natural Resources Archive |
| 4213100 |
Symptoms |
old fungal mats |
Minnesota Department of Natural Resources Archive |
| 5030087 |
Symptoms |
aerial photo |
USDA Forest Service - Forest Health Protection - St. Paul Archive |
| 5032025 |
Symptoms |
|
Joseph O'Brien |
| 5032042 |
Symptoms |
Vertical cracks in oak killed by oak wilt, indicating the presence of spore mats under the bark. |
Joseph O'Brien |
| 5030069 |
Symptoms |
Spore mat and pressure pad under the bark of oak-wilt killed tree. Jenny Juzwik is the person in the picture. |
Joseph O'Brien |
| 5005032 |
Symptoms |
|
Ronald F. Billings |
| 5005033 |
Symptoms |
interveinal necrosis |
Ronald F. Billings |
| 5005034 |
Symptoms |
veinal necrosis |
Ronald F. Billings |
| 5005035 |
Symptoms |
interveinal chlorosis |
Ronald F. Billings |
| 5005036 |
Symptoms |
interveinal chlorosis |
Ronald F. Billings |
| 2912093 |
Symptoms |
on leaf. Near San Antonio, Texas during Southern Forest Insect Work Conference Field Trip. |
G. Keith Douce |
| 3226026 |
Symptoms |
veinal necrosis |
Ronald F. Billings |
| 3226027 |
Symptoms |
root graft |
Ronald F. Billings |
| 3037015 |
Symptoms |
southern Missouri |
T.W. Bretz |
| 3226029 |
Symptoms |
leaf symptoms |
Ronald F. Billings |
| 3226030 |
Symptoms |
early symptoms on foliage |
Ronald F. Billings |
| 1501056 |
Symptoms |
Oak wilt kill in pasture, S. of Kerrville |
Paul A. Mistretta |
| 1501057 |
Symptoms |
Oak wilt, live oak, Kerrville State Park |
Paul A. Mistretta |
| 1501058 |
Symptoms |
Oak wilt, live oak, Kerrville State Park |
Paul A. Mistretta |
| 1501059 |
Symptoms |
Oak wilt, live oak, Kerrville State Park |
Paul A. Mistretta |
| 1509093 |
Symptoms |
Oak wilt |
Robert F. Bassett |
| 1509094 |
Symptoms |
Oak wilt |
Robert F. Bassett |
| 1509095 |
Symptoms |
Oak wilt |
USDA Forest Service - Region 8 Archive |
| 1509096 |
Symptoms |
Oak wilt |
USDA Forest Service - Region 8 Archive |
| 1509097 |
Symptoms |
Oak wilt |
USDA Forest Service - Region 8 Archive |
| 1509098 |
Symptoms |
Oak wilt |
USDA Forest Service - Region 8 Archive |
| 1509099 |
Symptoms |
Oak wilt |
USDA Forest Service - Region 8 Archive |
| 1509101 |
Symptoms |
Oak wilt |
USDA Forest Service - Region 8 Archive |
| 1949011 |
Symptoms |
Advanced stage of Ceratocystis fagacearum infection on oak: general view of wilted tree. |
C.E. Seliskar |
| 1949012 |
Symptoms |
Foliar symptoms caused by Ceratocystis fagacearum on oak. |
C.E. Seliskar |
| 1949013 |
Symptoms |
Foliar symptoms of Ceratocystis fagacearum on black oak (Quercus velutina) showing bronzing starting at the leaf apices and lobes, and a localized area of green tissue around the base of the midrib. |
C.E. Seliskar |
| 2252003 |
Symptoms |
infected sapling |
T.W. Bretz |
| 2252004 |
Symptoms |
leaf symptoms |
USDA Forest Service Archive |
| 2252005 |
Symptoms |
vascular streaking |
T.W. Bretz |
| 2252008 |
Symptoms |
bark crack over fungal mat |
T.W. Bretz |
| 1501053 |
Symptoms |
Oak wilt, V.A.Cemetary |
Paul A. Mistretta |
| 1301059 |
Symptoms |
Oak wilt pocket in urban landscape |
Joseph O'Brien |
| 1406093 |
Symptoms |
|
USDA Forest Service - North Central Research Station Archive |
| 1501041 |
Symptoms |
Oak wilt, Texas red oak leaf symptoms |
Paul A. Mistretta |
| 1501042 |
Symptoms |
Oak wilt, Texas red oak leaf symptoms |
Paul A. Mistretta |
| 1501043 |
Symptoms |
Oak wilt, Texas red oak leaf symptoms |
Paul A. Mistretta |
| 1501044 |
Symptoms |
Oak wilt, Live oak leaf symptoms |
Paul A. Mistretta |
| 1501045 |
Symptoms |
Oak wilt, Live oak leaf symptoms |
Paul A. Mistretta |
| 1501046 |
Symptoms |
Oak wilt, Live oak leaf symptoms |
Paul A. Mistretta |
| 1501047 |
Symptoms |
Oak wilt, Live oak leaf symptoms |
Paul A. Mistretta |
| 1501048 |
Symptoms |
Oak wilt, Live oak tree symptoms |
Paul A. Mistretta |
| 1501050 |
Symptoms |
Oak wilt, Live oakbranch showing symptoms |
Paul A. Mistretta |
| 1301020 |
Symptoms |
Vertical cracks in bark caused by pressure pads. |
Joseph O'Brien |
| 1301033 |
Symptoms |
Oak wilt in a young group of pin oaks |
Joseph O'Brien |
| 1458013 |
Symptoms |
bark cracking form pressure cushion |
North Carolina Forest Service Archive |
| 1473272 |
Symptoms |
one week after early symptoms had appeared. Rapid leaf fall is characteristic; 7/14/1953 |
Rocky Mountain Research Station/Forest Pathology Archive |
| 1501034 |
Symptoms |
Oak wilt, vascular streak |
Robert F. Bassett |
| 0758071 |
Symptoms |
Group of dead Texas live oaks killed by oak wilt |
William M. Ciesla |
| 0758075 |
Symptoms |
Foliage in early stages of wilt by oak wilt disease. |
William M. Ciesla |
| 0355038 |
Symptoms |
leaf symptoms |
Robert L. Anderson |
| 0725065 |
Symptoms |
Ceratocystis fagacearum in red oak (probably northern pin oak Quercus ellipsoidalis) surrounding a new house in Minnesota. (It was probably the pruning of trees during the building of the house that allowed oak wilt to enter the stand. |
John N. Gibbs |
| 0725090 |
Symptoms |
Wilted branch on northern pin oak (Quercus ellipsoidalis) in Minnesota. |
John N. Gibbs |
| 0725091 |
Symptoms |
Northern pin oak (Quercus ellipsoidalis) killed by Ceratocystis fagacearum in Minnesota. The retention of some dead leaves is characteristic of the disease. |
John N. Gibbs |
| 0725092 |
Symptoms |
Xylem of red oak affected by Ceratocystis fagacearum showing diffuse stain (often there is less stain than this). |
John N. Gibbs |
