Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 321720
Title Verticillium wilt in trees. Detection, prediction and disease management
Author(s) Goud, J.C.
Source Wageningen University. Promotor(en): Ariena van Bruggen, co-promotor(en): Aad Termorshuizen. - [S.I.] : S.n. - ISBN 9058088723 - 98
Department(s) Biological Farming Systems
Publication type Dissertation, internally prepared
Publication year 2003
Keyword(s) verticillium dahliae - verwelkingsziekten - houtachtige planten als sierplanten - plantenziekteverwekkende schimmels - virulentie - bodembiologie - epidemiologie - pathogeniteit - nederland - wilts - ornamental woody plants - plant pathogenic fungi - virulence - soil biology - epidemiology - pathogenicity - netherlands
Categories Plant Pathogenic Fungi / Ornamental Woody Plants

Verticillium dahliae , the causal agent of verticillium wilt, is the cause of high losses in a number of crops, especially nursery trees. Existing methods for quantification of V. dahliae microsclerotia in the soil were compared. The distinction of V. dahliae and V. tricorpus was studied on two semi-selective media. The morphology was highly dependent on the medium. Discriminating morphological characteristics were successfully used to identify isolates. There were no virulence differences on trees between the two V. dahliae VCGs that occur in the Netherlands. Biological soil disinfestation reduced V. dahliae in the soil by 85% and Pratylenchus fallax nematodes by 99%, through the creation of anaerobic conditions. The relationships between soil inoculum densities and verticillium wilt in Acer platanoides and Catalpa bignonioides showed that up to 5% diseased plants occurred at 1-2 detected microsclerotia per g soil. Diseased plants often recovered, but had a higher chance of becoming diseased again.

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