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 104466
Title Onderzoekingen over Ophiobolus graminis Sacc. en Ophiobolus herpotrichus (Fr.) Sacc. en over de door deze fungi veroorzaakte ziekten van Triticum vulgare Vill. en andere Gramineae
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door Jacques Hubert Jean van de Laar
Author(s) Laar, J.H.J. van de
Publisher Wageningen : Veenman
Publication year 1931
Description 146 p.
Notes Proefschrift Wageningen
Tutors Quanjer, Prof. Dr. H.M.
Graduation date 1931-02-04
Dissertation no. 56
Author abstract show abstract
Due to the increasing importance of the wheat disease 'tarwehalmdoder' in the Netherlands, research was started on its occurrence and cause. An extensive literature review proved the identity of 'tarwehalmdoder' with take-all or whiteheads, which were caused by 0. graminis. The symptoms of the disease were root rot, decreased growth with drying of the leaves, blackening of the stem base and premature ripening.

Other fungi found on the stubble of Ophiobolus-diseased plants were described.

Ascosporous isolates of O. graminis and O. herpotrichus in pure culture were used in artificial inoculations. Inoculation with 0. graminis resulted in whiteheads. Only about half the isolates of O. herpotrichus were virulent on wheat and barley causing death of seedlings. This symptom was different from foot-rot and root-rot.

The occurrence of O. graminis on many Gramineae was reported. Resistance did not occur in existing wheat varieties. Environmental factors influenced the severity of the disease. Good crop rotation and cultural practices could limit economic losses.

Online full textINTERNET
On paper FORUM ; SPEC.COLL. ; A2096,1931,1
FORUM ; STACKS ; NN08202,56
Keyword(s) (cab) ophiobolus / gaeumannomyces graminis / plant pathogenic fungi / cereals / food crops / diaporthales
Categories Plant Pathogenic Fungi
Publication type PhD thesis
Language Dutch; Flemish
About cum laude graduation (with distinction)
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