ISHS Acta Horticulturae 255: III International Symposium on Soil Desinfestation
AN ATTEMPT OF BIOLOGICAL CONTROL OF GLASSHOUSE CARNATION FUSARIUM WILT* |
| Authors: | M. Manka, D. Fruzynska-Jozwiak |
| Abstract:
The concept of the work is based on the fact that communities of fungi inhabiting podsol forest soils and composts usually suppress soil borne plant pathogens, particularly those belonging to the genus Fusarium. It was supposed that some of the soil fungi, alone or combined with others, may suppress also the pathogen of carnation, Fusarium oxysporum f.sp. dianthi. Soil fungi, from communities isolated in 1986 and 1987 from under 80-years-old pine stands and from a forest compost, that proved antagonistic to F. oxysporum f.sp. dianthi in vitro, were introduced together with the pathogen into a peat substrate for carnation growing. After simultaneous introduction in 1987 there was no protective effect on plants. In 1988 the soil fungi were introduced to peat together with plants and separated from the pathogen-containing part of the substrate by paper bags. Fifteen weeks after planting carnations were healthy in 4 out of 15 combinations (isolates) and the disease outbreak was delayed in the remaining 11 combinations. | |
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