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.
During the 1960s, Dutch mushroom farmers suffered severe losses from an infectious disease. Three types of virus particles were associated with the disease: isometric particles 25 and 34 run in diameter and bacilliform particles 19 run wide and 50 nm long. Symptoms were highly variable. Two, possibly three types of particle, were demonstrated in ultrathin sections of diseased fruiting bodies; one type, the 34-nm particle, was observed in sections of virus-infected mycelium from a nutrient medium and of basidiospores from diseased mushrooms.The disease spread with viable mycelium and spores from infected mushrooms. The time of infection governed loss of yield: earlier infection considerably reduced yield, whereas later infection did not. Results of the trials were used in drawing up control measures, which have been implemented among Dutch growers and have considerably reduced national losses, as shown by annual returns from the growers.
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