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001-es BibID:	BIBFORM082724
Első szerző:	Radócz László (növényvédő agrármérnök)
Cím:	Establishing a preventive biological protection method against chestnut blight (Cryphonectria parasitica (Murr.) Barr) fungus on sweet chestnut seedlings / Radócz László, ifj. Radócz László, Tarcali Gábor, Kovács Gabriella
Dátum:	2019
Megjegyzések:	Chestnut blight fungus (Cryphonectria parasitica) is considered to be the most dangerous pathogen of sweet chestnuts worldwide. Pest control is a major challenge as traditional crop protection methods have not been effective in stopping it. The only effective control against bark cancer is the treatment of infected trees with strains of reduced virulence (hypovirulence). The aim of our research was primarily the preventive use of hypovirulent strains, thus producing "protected" chestnut propagation material for planting. For our field artificial inoculation experiments we used 4 fungal isolates collected in Hungary. Of which two were virulent and two were hypovirulent fungal strains. Necrosis caused by pathogens was measured at three different times and at different vegetation periods, following the outdoor infection. We have shown that treatments with hypovirulent strains are not at all risk-free from a plant health point of view. Within less than a year, virulent strains of the blight fungus completely destroyed the treated seedlings. Of the two hypovirulent fungal strains, Nagymaros NM showed only partial shoot death on the seedlings, while those treated with Rezi R8 hypovirulent fungal strains were completely asymptomatic and callusform. Based on the results of the studies it can be stated that hypovirulent strains prove to be suitable for preventive control on sweet chestnut seedlings, but due to the special characteristics of different areas it is extremely time and energy consuming task to find the most suitable hypovirulent fungal isolate.
Tárgyszavak:	Agrártudományok Növénytermesztési és kertészeti tudományok nem besorolt egyéb Sweet chestnut (Castanea sativa) Preventive biological protection chestnut blight (Cryphonectria parasitica)
További szerzők:	Radócz László (1996-) (Növényorvos) Tarcali Gábor (1965-) (agrármérnök) Kovács Gabriella Enikő (1984-) (agrármérnök)
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat
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