Library Catalogue

Library Catalogue

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    Union Catalogue of Agricultural Libraries in the Netherlands

    The WUR Library Catalogue contains bibliographic data on books and periodicals held by the libraries of Wageningen University and Research Centre and some 15 associated libraries. Holding data are added to each record.

    Subjects covered include Agrotechnology, Food and Food Production, Plant and Animal Sciences, Soil Science, Geo-information, Landscape and Spatial Planning, Water and Climate, Ecosystem Studies, Economics and Society.

    The joint collections of the participating libraries cover a substantial part of the internationally available scientific literature in these disciplines.

    As far as Dutch scientific literature in these fields is concerned, coverage can be considered near 100%, including much of the so-called "grey literature".

    All titles are entered in their original language. Keywords are added to facilitate subject searching.

    The database is updated every day and now contains over 830.000 records.

Record number 104255
Title Untersuchungen ueber die 'zwarte houtvatenziekte' der Futter- und Zuckerruebe, verursacht durch Pythium irregulare Buisman
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door Hueseyin Rahmi Girginkoc
Author(s) Girginkoc, H.R.
Publisher Wageningen : Veenman
Publication year 1951
Description 62 p
Series title Mededelingen Landbouwhogeschool Wageningen (51-1)
Notes Proefschrift Wageningen  show all notes
Tutors Oort, Prof. Dr. A.J.P.
Graduation date 1951-04-13
Dissertation no. 160
Author abstract show abstract
The relation was studied between black vessel disease of beet and factors influencing the condition of the soil. Field observations demonstrated that the disease occurred exclusively on sandy soils and that wet and cool weather during May and June encouraged the disease.

The virulence was studied of several strains of Pythium irregulare and one strain of P. debaryanum. All these strains could cause damping-off but only a few strains of P. irregulare could cause black vessel disease. Toxic metabolites of the fungus, secreted in the lateral roots and transported through the waterconducting tissues, caused the symptoms of black vessel disease. A correlation could be demonstrated between the pathogenicity of the different strains and the toxicity of their staling products.

The amount of nutrients in the soil had no influence on the severity of the disease but acid soil (pH 7.1-4.9) encouraged the disease.

The influence of the temperature was clearest at a moisture content of 20-50 % of the moisture-holding capacity of the soil, the disease being more severe at a higher temperature.

There was a positive correlation between severity of the disease and moisture content of the soil.

Online full textINTERNET
On paper FORUM ; STACKS ; NN8202,160
Keyword(s) (cab) plant pathogenic fungi / fodder beet / pythium
Categories Plant Pathogenic Fungi
Publication type PhD thesis
Language German
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