Bud blight (Gemmamyces piceae) in the eastern part of the Krušné hory Mountains

A survey was carried out in 2013-2019 on the life cycle of the bud blight Gemmamyces piceae (Borthw.) Casagrande and the trend assessment in the infestation of the Colorado blue spruce Picea pungens Engelm. stands. Four ecologically different plots were chosen in the Fláje region in the Eastern part...

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Main Authors: Jiří Šefl, Veronika Mottlová, Iva Schořálková
Format: Article
Language:English
Published: Czech Academy of Agricultural Sciences 2020-08-01
Series:Journal of Forest Science
Subjects:
Online Access:https://jfs.agriculturejournals.cz/artkey/jfs-202008-0001_bud-blight-gemmamyces-piceae-in-the-eastern-part-of-the-krusne-hory-mountains.php
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author Jiří Šefl
Veronika Mottlová
Iva Schořálková
author_facet Jiří Šefl
Veronika Mottlová
Iva Schořálková
author_sort Jiří Šefl
collection DOAJ
description A survey was carried out in 2013-2019 on the life cycle of the bud blight Gemmamyces piceae (Borthw.) Casagrande and the trend assessment in the infestation of the Colorado blue spruce Picea pungens Engelm. stands. Four ecologically different plots were chosen in the Fláje region in the Eastern part of the Krušné hory Mountains. The pycnidia were formed at the beginning of June on buds infested the previous year. Later, in the second half of June, they formed on the spring attack buds. Conidia occurred in the first week of July on the buds of the old infestation, or later in the case of the spring attack buds, in the middle of July. The production of conidia lasted till the end of September. Ascospores occurred in the middle of July and were produced until the end of September. The ability of host trees to sprout became continually weaker, along with the defoliation progress. A distinct decline in the sprouting ability was noticed on stands with a dense crown canopy and on stands with competition of broad-leaved trees - with an admixture of birch.
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spelling doaj.art-a4f5e3cea7c844c08cc01f17d83c76532023-02-23T03:43:05ZengCzech Academy of Agricultural SciencesJournal of Forest Science1212-48341805-935X2020-08-0166830931710.17221/11/2020-JFSjfs-202008-0001Bud blight (Gemmamyces piceae) in the eastern part of the Krušné hory MountainsJiří Šefl0Veronika Mottlová1Iva Schořálková2Forest Management Institute, Brandýs nad Labem, Czech RepublicFaculty of Environment, Jan Evangelista Purkyně University in Ústí nad Labem, Ústí nad Labem, Czech Republic *Coresponding author: jurisefl@seznam.czFaculty of Environment, Jan Evangelista Purkyně University in Ústí nad Labem, Ústí nad Labem, Czech Republic *Coresponding author: jurisefl@seznam.czA survey was carried out in 2013-2019 on the life cycle of the bud blight Gemmamyces piceae (Borthw.) Casagrande and the trend assessment in the infestation of the Colorado blue spruce Picea pungens Engelm. stands. Four ecologically different plots were chosen in the Fláje region in the Eastern part of the Krušné hory Mountains. The pycnidia were formed at the beginning of June on buds infested the previous year. Later, in the second half of June, they formed on the spring attack buds. Conidia occurred in the first week of July on the buds of the old infestation, or later in the case of the spring attack buds, in the middle of July. The production of conidia lasted till the end of September. Ascospores occurred in the middle of July and were produced until the end of September. The ability of host trees to sprout became continually weaker, along with the defoliation progress. A distinct decline in the sprouting ability was noticed on stands with a dense crown canopy and on stands with competition of broad-leaved trees - with an admixture of birch.https://jfs.agriculturejournals.cz/artkey/jfs-202008-0001_bud-blight-gemmamyces-piceae-in-the-eastern-part-of-the-krusne-hory-mountains.phpcolorado blue sprucedisease developmentepidemicgemmamyces piceae
spellingShingle Jiří Šefl
Veronika Mottlová
Iva Schořálková
Bud blight (Gemmamyces piceae) in the eastern part of the Krušné hory Mountains
Journal of Forest Science
colorado blue spruce
disease development
epidemic
gemmamyces piceae
title Bud blight (Gemmamyces piceae) in the eastern part of the Krušné hory Mountains
title_full Bud blight (Gemmamyces piceae) in the eastern part of the Krušné hory Mountains
title_fullStr Bud blight (Gemmamyces piceae) in the eastern part of the Krušné hory Mountains
title_full_unstemmed Bud blight (Gemmamyces piceae) in the eastern part of the Krušné hory Mountains
title_short Bud blight (Gemmamyces piceae) in the eastern part of the Krušné hory Mountains
title_sort bud blight gemmamyces piceae in the eastern part of the krusne hory mountains
topic colorado blue spruce
disease development
epidemic
gemmamyces piceae
url https://jfs.agriculturejournals.cz/artkey/jfs-202008-0001_bud-blight-gemmamyces-piceae-in-the-eastern-part-of-the-krusne-hory-mountains.php
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