Biological Control of Cryphonectria parasitica in Romanian Protected Sweet Chestnut Forests

  • Dănuț CHIRA National Institute for Research and Development in Forestry “Marin Drăcea”, Brașov Research Station, 26 Cloșca Str., Brașov
  • Valentin BOLEA National Institute for Research and Development in Forestry “Marin Drăcea”, Brașov Research Station, 26 Cloșca Str., Brașov
  • Florentina CHIRA National Institute for Research and Development in Forestry “Marin Drăcea”, Brașov Research Station, 26 Cloșca Str., Brașov
  • Costel MANTALE National Institute for Research and Development in Forestry “Marin Drăcea”, Brașov Research Station, 26 Cloșca Str., Brașov
  • Ioan TĂUT 1) University of Agricultural Science and Veterinary Medicine, Faculty of Horticulture, Forestry Department, Cluj-Napoca, Calea Mănăștur 3-5 Str., 400372 Cluj-Napoca 2) National Institute for Research and Development in Forestry “Marin Drăcea”, Cluj-Napoca Research Station, 65 Horea Str., Cluj-Napoca
  • Vasile ŞIMONCA 1) University of Agricultural Science and Veterinary Medicine, Faculty of Horticulture, Forestry Department, Cluj-Napoca, Calea Mănăștur 3-5 Str., 400372 Cluj-Napoca 2) National Institute for Research and Development in Forestry “Marin Drăcea”, Cluj-Napoca Research Station, 65 Horea Str., Cluj-Napoca
  • Stephanos DIAMANDIS Forest Research Institute of Thessaloniki, NAGREF, Vasilika, 57006 Thessaloniki

Abstract

Asiatic fungus Cryphonectria parasitica has gradually infected all chestnut habitats, forest and horticulture plantations from the most important natural centres of sweet chestnut distribution in Romania. The objectives of this work were to understand the destruction rate of chestnut habitats under C. parasitica pressure, and to test the efficacy of pathogen control in revitalizing these protected forests. Successive inventories of forest health status were carried out in forest districts of Maramures and Gorj counties. C. parasitica biologic control using CHV1 virus has been tested. The methodology includes standard laboratory and field work techniques: local hipervirulent strain identification and conversion to hipovirulence, field canker inoculation, and treatment efficacy evaluation. The fungus killed all mature chestnut trees in roughly two decades. Field inoculation has been successful on chestnut and sessile oak (fungus secondary host) in experimental plots from both target zones. This is the first time in Romania when a forest habitat is recovered by means of biological control, after a severe dieback of the old forest caused by a lethal invasive pathogen.

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Published
2017-09-15
How to Cite
CHIRA, D., BOLEA, V., CHIRA, F., MANTALE, C., TĂUT, I., ŞIMONCA, V., & DIAMANDIS, S. (2017). Biological Control of Cryphonectria parasitica in Romanian Protected Sweet Chestnut Forests. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 45(2), 632-638. https://doi.org/10.15835/nbha45210895
Section
Research Articles