ISHS Acta Horticulturae 150: International Symposium on Substrates in Horticulture other than Soils In Situ
SUPPRESSIVE EFFECTS OF CERTAIN SOILS AND SUBSTRATES AGAINST FUSARIUM WILT OF CARNATION. |
| Authors: | V. Cebolla, J. Pera |
| Abstract:
In order to find out the suppressive power of soils and substrates against Fusarium oxysporum f. sp. dianthi, a comparative study was carried out. The soils came from Oyarzun, Xeraco, Logroño, Corbera, Siagne and Olot, and the substrates were: fermented pine bark (EFU), fermented wood shavings (UFU), and moss peat. Siagne soil, known by its suppressive power against F.O. dianthi was used as control. The results showed that the organic substrates EFU and UFU had less suppressive power than the inorganic substrates, but more than peat. The mycological flora from Siagne (such as Aspergillus, Penicillium, but not Trichoderma) appeared to reduce the inoculum concentration on sterile soil. However, the whole Siagne flora appeared to be the best in reducing Fusarium population. It was quite easy to isolate antibiotics producing bacteria and actinomycetes from the suppressive soils which are able to stop Fusarium growth 'in vitro'. | |
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