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Dutch Elm Disease & Elm Bark Beetle - Tree pests and diseases:
Dutch elm disease history and diagnosis. DED is caused by a member of the sac fungi (Ascomycota) affecting elm trees, and is spread by elm bark beetles. Subscribe to our channel for more videos on trees woods and forests. Please like and comment below.
In Britain, the disease was first identified in 1927 by T R Peace on English elm in Hertfordshire.
This first strain was a relatively mild one, which killed only a small proportion of elms, more often just killing a few branches, and had largely died out by 1940 owing to its susceptibility to viruses. The disease was isolated in The Netherlands in 1921 by Bea Schwarz, a pioneering Dutch phytopathologist, and this discovery would lend the disease its name.
Circa 1967, a new, far more virulent, strain arrived in Britain, apparently via east...
published: 16 Jan 2018
-
The Last Stand - Dutch Elm Disease
A video in two parts describing the significance of Dutch Elm Disease (DED) devastating elm populations; its history, symptoms and control strategies.
published: 29 Sep 2010
-
What is Dutch Elm Disease?
Dutch elm disease (DED) is a lethal fungal disease of native North American elms. The fungi that cause DED entered the United States early in the 1900’s on elm logs from Europe.
Dutch elm disease now occurs throughout the U.S. and has led to the loss of the American elm as the premier street tree.
What does Dutch Elm Disease look like?
Wilting leaves, often on a single branch, are the first symptoms of DED. Yellowing of leaves and leaf drop follow. Trees may quickly lose all of their leaves, or trees may survive several years with an infection localized in a single branch. Infected branches often have brown streaks under the bark that follow the wood grain.
CapCityTree.com
608-838-8522
published: 04 Nov 2019
-
Dutch Elm Disease
Dr. Scott Enebak Auburn University School of Forestry & Wildlife Sciences, discusses the characteristics of common forest diseases.
published: 25 Feb 2010
-
Dutch Elm Disease
Director of the Plant Disease Diagnostic Clinic, Brian Hudelson, talks about Dutch elm disease.
published: 28 Feb 2017
-
Dutch Elm Disease
Stevens Point Wisconsin City Arborist Paul Ziemann inspects an Elm tree suspected of having Dutch Elm disease. He explains the history of the disease, what you can do to help preserve Elm trees, and the process of condemning and ultimately removing a diseased tree.
Video produced by: https://www.youtube.com/user/rhevideo/
published: 07 Jul 2017
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Dutch Elm Disease
The City has managed to evade Emerald Ash Borer to date, but one tree disease has been a presence in Bloomington for decades. Learn how Park Maintenance crews are identifying and removing trees infected with Dutch Elm Disease.
published: 18 Oct 2012
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The Science and Management of Protecting Majestic Elms from Dutch Elm Disease
Dutch Elm Disease is still killing majestic American Elms across the United States. This does not have to happen! Learn how to successfully protect American Elms from this devastating disease. In this webinar, we will discuss:
• Biology of Dutch Elm Disease including signs and symptoms
• Key distinctions and strategies to successful management
• Best practices for improving uptake and getting predictable results
This webinar is designed to be the first step in a training curriculum with a follow up hands-on field training or virtual training. This is a great opportunity for a refresher for even very experienced applicators, as well as a critical first step in training for new applicators.
published: 12 May 2020
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Genomic studies of the Dutch elm disease fungus Ophiostoma novo-ulmi: dimorphism, pathogenicity
Genomic studies of the Dutch elm disease fungus Ophiostoma novo-ulmi: dimorphism, pathogenicity and beyond
impartida por el Dr, Louis Bernier (Universidad Laval, Canadá) dentro del ciclo de seminarios del Programa de Doctorado en Investigación Forestal Avanzada (UPM)
Vídeo producido por el Gabinete de Tele-Educación de la Universidad Politécnica de Madrid
published: 19 Jun 2017
-
Treating Dutch Elm Disease
This video demonstrates the use of Dutch Trig in the city of The Hague
published: 24 Sep 2017
4:39
Dutch Elm Disease & Elm Bark Beetle - Tree pests and diseases:
Dutch elm disease history and diagnosis. DED is caused by a member of the sac fungi (Ascomycota) affecting elm trees, and is spread by elm bark beetles. Subscri...
Dutch elm disease history and diagnosis. DED is caused by a member of the sac fungi (Ascomycota) affecting elm trees, and is spread by elm bark beetles. Subscribe to our channel for more videos on trees woods and forests. Please like and comment below.
In Britain, the disease was first identified in 1927 by T R Peace on English elm in Hertfordshire.
This first strain was a relatively mild one, which killed only a small proportion of elms, more often just killing a few branches, and had largely died out by 1940 owing to its susceptibility to viruses. The disease was isolated in The Netherlands in 1921 by Bea Schwarz, a pioneering Dutch phytopathologist, and this discovery would lend the disease its name.
Circa 1967, a new, far more virulent, strain arrived in Britain, apparently via east coast ports on shipments of rock elm U. thomasii logs from Canada destined for the small-boat industry, confirmed in 1973 when another consignment was examined at Southampton Docks. This strain proved both highly contagious and lethal to European elms; more than 25 million trees have died in the UK alone, while France has lost over 90% of its elms. The disease spread rapidly northwards, reaching Scotland within 10 years.
By 1990, very few mature elms were left in Britain or much of continental Europe. One of the most distinctive English countryside trees, the English elm U. procera, is particularly susceptible as it is the elm most favoured by the Scolytus beetles. Thirty years after the outbreak of the epidemic, nearly all these trees, which often grew to more than 45 m high, are gone. The species still survives in hedgerows, as the roots are not killed and send up root sprouts ("suckers"). These suckers rarely reach more than 5 m tall before succumbing to a new attack of the fungus. However, established hedges kept low by clipping have remained apparently healthy throughout the nearly 40 years since the onset of the disease in the UK.
The largest concentration of mature elm trees remaining in England is in Brighton and Hove, East Sussex.
Common names DED
Causal agents Ophiostoma ulmi / Ophiostoma himal-ulmi / phiostoma novo-ulmi
Hosts; elm trees
Vectors; elm bark beetle
EPPO Code; CERAUL
https://en.wikipedia.org/wiki/Dutch_elm_disease
Dutch elm disease officer Anthony Becvar explains more about Dutch elm disease, which has killed more than 25 million elms in the UK. On the Sussex coast, you can still find an exceptional elm landscape.
Report Dutch elm disease in East Sussex at http://eastsussex.gov.uk
Watch a short video on the Sussex elms at https://youtu.be/BR11rRbaDws
Visit The Conservation Foundation at http://conservationfoundation.co.uk
Category
Science & Technology
Licence
Creative Commons Attribution licence (reuse allowed)
All rights. For more great videos like this check out https://www.youtube.com/user/ConservationFdn 🌳
Promoting biodiversity in arboriculture, forestry and gardening. Showcasing agroforestry and ancient woodland restoration.
https://wn.com/Dutch_Elm_Disease_Elm_Bark_Beetle_Tree_Pests_And_Diseases
Dutch elm disease history and diagnosis. DED is caused by a member of the sac fungi (Ascomycota) affecting elm trees, and is spread by elm bark beetles. Subscribe to our channel for more videos on trees woods and forests. Please like and comment below.
In Britain, the disease was first identified in 1927 by T R Peace on English elm in Hertfordshire.
This first strain was a relatively mild one, which killed only a small proportion of elms, more often just killing a few branches, and had largely died out by 1940 owing to its susceptibility to viruses. The disease was isolated in The Netherlands in 1921 by Bea Schwarz, a pioneering Dutch phytopathologist, and this discovery would lend the disease its name.
Circa 1967, a new, far more virulent, strain arrived in Britain, apparently via east coast ports on shipments of rock elm U. thomasii logs from Canada destined for the small-boat industry, confirmed in 1973 when another consignment was examined at Southampton Docks. This strain proved both highly contagious and lethal to European elms; more than 25 million trees have died in the UK alone, while France has lost over 90% of its elms. The disease spread rapidly northwards, reaching Scotland within 10 years.
By 1990, very few mature elms were left in Britain or much of continental Europe. One of the most distinctive English countryside trees, the English elm U. procera, is particularly susceptible as it is the elm most favoured by the Scolytus beetles. Thirty years after the outbreak of the epidemic, nearly all these trees, which often grew to more than 45 m high, are gone. The species still survives in hedgerows, as the roots are not killed and send up root sprouts ("suckers"). These suckers rarely reach more than 5 m tall before succumbing to a new attack of the fungus. However, established hedges kept low by clipping have remained apparently healthy throughout the nearly 40 years since the onset of the disease in the UK.
The largest concentration of mature elm trees remaining in England is in Brighton and Hove, East Sussex.
Common names DED
Causal agents Ophiostoma ulmi / Ophiostoma himal-ulmi / phiostoma novo-ulmi
Hosts; elm trees
Vectors; elm bark beetle
EPPO Code; CERAUL
https://en.wikipedia.org/wiki/Dutch_elm_disease
Dutch elm disease officer Anthony Becvar explains more about Dutch elm disease, which has killed more than 25 million elms in the UK. On the Sussex coast, you can still find an exceptional elm landscape.
Report Dutch elm disease in East Sussex at http://eastsussex.gov.uk
Watch a short video on the Sussex elms at https://youtu.be/BR11rRbaDws
Visit The Conservation Foundation at http://conservationfoundation.co.uk
Category
Science & Technology
Licence
Creative Commons Attribution licence (reuse allowed)
All rights. For more great videos like this check out https://www.youtube.com/user/ConservationFdn 🌳
Promoting biodiversity in arboriculture, forestry and gardening. Showcasing agroforestry and ancient woodland restoration.
- published: 16 Jan 2018
- views: 13393
15:05
The Last Stand - Dutch Elm Disease
A video in two parts describing the significance of Dutch Elm Disease (DED) devastating elm populations; its history, symptoms and control strategies.
A video in two parts describing the significance of Dutch Elm Disease (DED) devastating elm populations; its history, symptoms and control strategies.
https://wn.com/The_Last_Stand_Dutch_Elm_Disease
A video in two parts describing the significance of Dutch Elm Disease (DED) devastating elm populations; its history, symptoms and control strategies.
- published: 29 Sep 2010
- views: 11275
1:52
What is Dutch Elm Disease?
Dutch elm disease (DED) is a lethal fungal disease of native North American elms. The fungi that cause DED entered the United States early in the 1900’s on elm...
Dutch elm disease (DED) is a lethal fungal disease of native North American elms. The fungi that cause DED entered the United States early in the 1900’s on elm logs from Europe.
Dutch elm disease now occurs throughout the U.S. and has led to the loss of the American elm as the premier street tree.
What does Dutch Elm Disease look like?
Wilting leaves, often on a single branch, are the first symptoms of DED. Yellowing of leaves and leaf drop follow. Trees may quickly lose all of their leaves, or trees may survive several years with an infection localized in a single branch. Infected branches often have brown streaks under the bark that follow the wood grain.
CapCityTree.com
608-838-8522
https://wn.com/What_Is_Dutch_Elm_Disease
Dutch elm disease (DED) is a lethal fungal disease of native North American elms. The fungi that cause DED entered the United States early in the 1900’s on elm logs from Europe.
Dutch elm disease now occurs throughout the U.S. and has led to the loss of the American elm as the premier street tree.
What does Dutch Elm Disease look like?
Wilting leaves, often on a single branch, are the first symptoms of DED. Yellowing of leaves and leaf drop follow. Trees may quickly lose all of their leaves, or trees may survive several years with an infection localized in a single branch. Infected branches often have brown streaks under the bark that follow the wood grain.
CapCityTree.com
608-838-8522
- published: 04 Nov 2019
- views: 6381
3:02
Dutch Elm Disease
Dr. Scott Enebak Auburn University School of Forestry & Wildlife Sciences, discusses the characteristics of common forest diseases.
Dr. Scott Enebak Auburn University School of Forestry & Wildlife Sciences, discusses the characteristics of common forest diseases.
https://wn.com/Dutch_Elm_Disease
Dr. Scott Enebak Auburn University School of Forestry & Wildlife Sciences, discusses the characteristics of common forest diseases.
- published: 25 Feb 2010
- views: 18937
8:00
Dutch Elm Disease
Director of the Plant Disease Diagnostic Clinic, Brian Hudelson, talks about Dutch elm disease.
Director of the Plant Disease Diagnostic Clinic, Brian Hudelson, talks about Dutch elm disease.
https://wn.com/Dutch_Elm_Disease
Director of the Plant Disease Diagnostic Clinic, Brian Hudelson, talks about Dutch elm disease.
- published: 28 Feb 2017
- views: 5403
4:50
Dutch Elm Disease
Stevens Point Wisconsin City Arborist Paul Ziemann inspects an Elm tree suspected of having Dutch Elm disease. He explains the history of the disease, what you ...
Stevens Point Wisconsin City Arborist Paul Ziemann inspects an Elm tree suspected of having Dutch Elm disease. He explains the history of the disease, what you can do to help preserve Elm trees, and the process of condemning and ultimately removing a diseased tree.
Video produced by: https://www.youtube.com/user/rhevideo/
https://wn.com/Dutch_Elm_Disease
Stevens Point Wisconsin City Arborist Paul Ziemann inspects an Elm tree suspected of having Dutch Elm disease. He explains the history of the disease, what you can do to help preserve Elm trees, and the process of condemning and ultimately removing a diseased tree.
Video produced by: https://www.youtube.com/user/rhevideo/
- published: 07 Jul 2017
- views: 2686
4:30
Dutch Elm Disease
The City has managed to evade Emerald Ash Borer to date, but one tree disease has been a presence in Bloomington for decades. Learn how Park Maintenance crews a...
The City has managed to evade Emerald Ash Borer to date, but one tree disease has been a presence in Bloomington for decades. Learn how Park Maintenance crews are identifying and removing trees infected with Dutch Elm Disease.
https://wn.com/Dutch_Elm_Disease
The City has managed to evade Emerald Ash Borer to date, but one tree disease has been a presence in Bloomington for decades. Learn how Park Maintenance crews are identifying and removing trees infected with Dutch Elm Disease.
- published: 18 Oct 2012
- views: 6703
49:48
The Science and Management of Protecting Majestic Elms from Dutch Elm Disease
Dutch Elm Disease is still killing majestic American Elms across the United States. This does not have to happen! Learn how to successfully protect American E...
Dutch Elm Disease is still killing majestic American Elms across the United States. This does not have to happen! Learn how to successfully protect American Elms from this devastating disease. In this webinar, we will discuss:
• Biology of Dutch Elm Disease including signs and symptoms
• Key distinctions and strategies to successful management
• Best practices for improving uptake and getting predictable results
This webinar is designed to be the first step in a training curriculum with a follow up hands-on field training or virtual training. This is a great opportunity for a refresher for even very experienced applicators, as well as a critical first step in training for new applicators.
https://wn.com/The_Science_And_Management_Of_Protecting_Majestic_Elms_From_Dutch_Elm_Disease
Dutch Elm Disease is still killing majestic American Elms across the United States. This does not have to happen! Learn how to successfully protect American Elms from this devastating disease. In this webinar, we will discuss:
• Biology of Dutch Elm Disease including signs and symptoms
• Key distinctions and strategies to successful management
• Best practices for improving uptake and getting predictable results
This webinar is designed to be the first step in a training curriculum with a follow up hands-on field training or virtual training. This is a great opportunity for a refresher for even very experienced applicators, as well as a critical first step in training for new applicators.
- published: 12 May 2020
- views: 150
1:10:58
Genomic studies of the Dutch elm disease fungus Ophiostoma novo-ulmi: dimorphism, pathogenicity
Genomic studies of the Dutch elm disease fungus Ophiostoma novo-ulmi: dimorphism, pathogenicity and beyond
impartida por el Dr, Louis Bernier (Universidad Laval...
Genomic studies of the Dutch elm disease fungus Ophiostoma novo-ulmi: dimorphism, pathogenicity and beyond
impartida por el Dr, Louis Bernier (Universidad Laval, Canadá) dentro del ciclo de seminarios del Programa de Doctorado en Investigación Forestal Avanzada (UPM)
Vídeo producido por el Gabinete de Tele-Educación de la Universidad Politécnica de Madrid
https://wn.com/Genomic_Studies_Of_The_Dutch_Elm_Disease_Fungus_Ophiostoma_Novo_Ulmi_Dimorphism,_Pathogenicity
Genomic studies of the Dutch elm disease fungus Ophiostoma novo-ulmi: dimorphism, pathogenicity and beyond
impartida por el Dr, Louis Bernier (Universidad Laval, Canadá) dentro del ciclo de seminarios del Programa de Doctorado en Investigación Forestal Avanzada (UPM)
Vídeo producido por el Gabinete de Tele-Educación de la Universidad Politécnica de Madrid
- published: 19 Jun 2017
- views: 322
3:12
Treating Dutch Elm Disease
This video demonstrates the use of Dutch Trig in the city of The Hague
This video demonstrates the use of Dutch Trig in the city of The Hague
https://wn.com/Treating_Dutch_Elm_Disease
This video demonstrates the use of Dutch Trig in the city of The Hague
- published: 24 Sep 2017
- views: 2127
Muskogee Phoenix
04 Dec 2024
Muskogee Phoenix
04 Dec 2024