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.

    We have a manual that explains all the features 

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Onderzoek naar oorzaak van bloemschade bij potanthurium: Praktijkinventarisatie op bedrijven met bloemschade
Linden, A. van der; Holstein, R. van; Garcia Victoria, N. - \ 2012
Bleiswijk : Wageningen UR Glastuinbouw (Rapporten GTB 1155) - 22
potplanten - anthurium - bloemen - symptomen - laboratoriumdiagnose - onderzoek - nederland - pot plants - flowers - symptoms - laboratory diagnosis - research - netherlands
Anthurium grown in pots regularly show serious damage on white flowers with green blots and stripes, but sometimes damage occurs also on red flowers. Plants with these symptoms were collected in commercial greenhouses and the symptoms were photographed. The plants were dissected in the laboratory in order to find the cause of the symptoms. Mites of the family Tarsonemidae were one the suspected causes of these symptoms, but in none of the plants mites were detected. As a result of these observations we are not able to conclude that tarsonemid mites are the cause of the symptoms, but we are also not able to exclude this possibility. In order to further investigate into the cause of the symptoms, other possibilities than noxious organisms should be investigated also.
Voorspelling van de bemestende waarde (N) van runderdrijfmest
Boer, H.C. de; Bloem, J. - \ 2010
Lelystad : Wageningen UR Livestock Research (Rapport / Wageningen UR Livestock Research 359) - 21
rundveehouderij - mest - drijfmest - graslanden - voorspelling - stikstofmeststoffen - stikstof - bodemchemie - laboratoriumdiagnose - bemesting - cattle husbandry - manures - slurries - grasslands - prediction - nitrogen fertilizers - nitrogen - soil chemistry - laboratory diagnosis - fertilizer application
Voor de praktijk lijkt het niet langer nodig om voor de voorspelling van de N-opname van grasland uit runderdrijfmest (eerste vier sneden na bemesting) nog gebruik te maken van het gehalte organische N. Het gebruik van minerale N lijkt te volstaan. Wel dient er duidelijk onderscheid gemaakt te worden tussen onvergiste en covergiste drijfmest. De rekenregels in de Bemestingsadviesbasis kunnen op basis van deze informatie aangepast worden.
Toepassing van uitsluitdiagnostiek voor klassieke varkenspest bij a-specifieke klinische problemen op varkensbedrijven: een enquete onder varkenshouders en dierenartsen.
Elbers, A.R.W. ; Gorgievski-Duijvesteijn, M.J. ; Velden, P.G. ; Loeffen, W.L.A. - \ 2007
Tijdschrift voor Diergeneeskunde 132 (2007)9. - ISSN 0040-7453 - p. 340 - 345.
varkenspest - varkenshouderij - diagnostische technieken - laboratoriumdiagnose - polymerase-kettingreactie - testen - bloedmonsters verzamelen - bloed - klinische aspecten - symptomen - swine fever - pig farming - diagnostic techniques - laboratory diagnosis - polymerase chain reaction - testing - blood specimen collection - blood - clinical aspects - symptoms - epidemic
Outbreaks (of Classical Swine Fever (CSF) occurred in spring 2006 in Germany close to the Dutch border. On 6th April Dutch pig farmers were given the possibility to submit blood samples directly via their veterinary practitioner to the National Reference Laboratory for CSF if their pigs had nonspecific clinical symptoms or if pigs were being treated with antibiotics. The pig farm was not quarantined and was not visited by the veterinary authorities. Over a period of 9 weeks 156 pig farmers submitted whole blood samples via 50 different veterinary practices. All samples tested negative in the PCR test. These pig farmers and veterinary practitioners were asked to respond to a postal questionnaire with questions regarding their experience with this new diagnostic possibility, the distribution of the costs involved, a comparison official notification or use of with other instruments, such as of a leukocyte count test, and their knowledge of clinical signs of CSF 65 pig farmers (42%) and 33 veterinary practices (66%) returned the questionnaire. The main results indicated that pig farmers (72%) would use this type of exclusion diagnostics sooner than that they would approach the veterinary authorities (practitioners: 86%). Moreover the respondents considered the fact that the farm was not quarantined immediately to be an advantage (pig farmers, 79%; practitioners, 88%). 32 percent of the pig farmers were not aware that they were required to submit blood samples if pigs were being treated with antibiotics (practitioners: 11%). The majority of pig farmers and practitioners were not satisfied with the current distribution of the costs involved: in their opinion the costs of the PCR test, the costs of the veterinary practitioner and the costs for shipping the samples to the reference laboratory should be paid out of the Animal Health Fund (50% government and 50% industry) or by the government. If the current distribution of the costs is not changed, a large proportion of the pig farmers indicated that they would not use this form of exclusion diagnostics for CSF in the future. Pig farmers appeared to have a rather limited knowledge of the clinical signs of CSF: 33% of the pig farmers could mention maximally three clinical signs of CSF and 7% could not mention a single clinical sign of CSF and said they were entirely dependent on the practitioners' ability to judge a CSF-suspect situation.
Measuring acid volatile sulphide in floodplain lake sediments: effect of reaction time, sample size and aeration
Griethuysen, C. van; Gillissen, F. ; Koelmans, A.A. - \ 2002
Chemosphere 47 (2002). - ISSN 0045-6535 - p. 395 - 400.
bodemchemie - chemische eigenschappen - sulfiden - analyse - laboratoriumdiagnose - sediment - meren - waterbodems - soil chemistry - lakes - chemical properties - sulfides - analysis - laboratory diagnosis - water bottoms
Chromatografie (samenvatting van de cursus gegeven in het voorjaar 1980)
Harmsen, J. - \ 1980
Wageningen : ICW (Nota / Instituut voor Cultuurtechniek en Waterhuishouding 1224) - 73
chromatografie - scheidingstechnologie - waterkwaliteit - monitoring - laboratoriumdiagnose - chromatography - separation technology - water quality - laboratory diagnosis
Deze nota geeft een overzicht van de chromatografie met de nadruk op de technieken, die op het waterkwaliteitslaboratorium van het ICW worden toegepast en is in eerste instantie bedoeld als naslagwerk voor degenen, die de cursus hebben gevolgd.
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