|Statement||edited by John Gibbs, Cees van Dijk and Joan Webber.|
|Series||Bulletin -- 126, Bulletin (Great Britain. Forestry Commission) -- 126|
|Contributions||Gibbs, J. N., Dijk, C. van., Webber, Joan F., Great Britain. Forest Research., Great Britain. Forestry Commission.|
|LC Classifications||SD397.A4 P49 2003|
|The Physical Object|
|Pagination||xvi, 82 p. :|
|Number of Pages||82|
This volume features a wide range of effective techniques for identifying, diagnosing, and controlling Phytophthora diseases. It also offers the most complete treatment of Phytophthora available, including descriptions of all species in the genus/5(3). Cech: Phytophthora Decline of Alder in Europe Geographic Extent of the Disease Phytophthora disease of alder is, so far, epidemic only in the United Kingdom. Between and , it spread all over England up to the River Spey in Scotland (Forestry Commission ). British investigators report that the number of trees. A Phytophthora was found associated with wilt and mortality of Italian alder (Alnus cordata) seedlings in a nursery in northern Tuscany, Central disease is one of the major constraints to alder survival in northern Europe (3). Symptoms included sparse yellowish brown foliage with abnormally small leaves, dark stained necrosis of the bark at the collar level, and reduction of the. In summer , common alder (Alnus glutinosa) trees with crown dieback, lower trunk lesions and tarry exudations were observed in a riparian forest in Northwest Hungary. An unusual Phytophthora, partially similar to P. cambivora, was isolated from diseased trees and from surrounding soil. A comparison with alder Phytophthora from other countries indicated that certain traits of the Hungarian.
Phytophthora decline of riparian alder populations has recently become an important problem in many European countries, including the Czech Republic. The causal agent, Phytophthora alni, has spread quickly in the Czech Republic. Hundreds of kilometres of riparian alder stands, especially in the western part of the country, have been severely affected to date. Phytophthora alni, a soil- and waterborne pathogen, causes aggressive root and collar rot on riparian alder populations (1,2,4). The disease has been described from several European countries with a destructive impact in Great Britain (1,2). All European alder species and the red alder (Alnus rubra) are highly susceptible. Since an increasing decline and dieback of alders (Alnus glutinosa) has been observed in Poland. Woodlots were monitored in and , and sixty-eight isolates of Phytophthora were. EPPO, Mini data sheet on. Phytophthora. disease of alder. Added in – Deleted in Reasons for deletion: Phytophthora disease of alder initially appeared in the EPPO Reporting Service in and then in the first version of the Alert List in
Table Data of Phytophthora disease of alder from plots across the southern 3 part of England and east Wales Table Change in the condition of A. glutinosa at three sites in upper Austria 5 Table Incidence of Phytophthora disease in plots of alder in north-east France 6. Abstract During and an unusual Phytophthora was consistently isolated from bark lesions at the stem bases of dying alder in Southern Britain. The Phytophthora resembles P. cambivora in both its gametangial and sporangial morphology. Alder Phytophthora disease in Europe and variants of the pathogen Phytophthora alni is an emergent hybrid pathogen of alder (Alnus spp.) with three variants (Brasier et al. , Ioos et al. , Ioos et al. ). The variants appear to range in their. A root disease of common alder caused by Phytophthora sp. is widespread in southern Britain. It is estimated that more than 20 trees are seriously affected. Une infection racinaire due àPhytophth.