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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    Development and duration of accelerated degradation of nematicides in different soils
    Smelt, J.H. ; Peppel-Groen, A.E. van de; Pas, L.J.T. van der; Dijksterhuis, A. - \ 1996
    Soil Biology and Biochemistry 28 (1996)12. - ISSN 0038-0717 - p. 1757 - 1765.
    microbiële afbraak - nematiciden - persistentie - pesticidenresiduen - pesticiden - fysicochemische eigenschappen - gewasbescherming - bodemchemie - bodemeigenschappen - microbial degradation - nematicides - persistence - pesticide residues - pesticides - physicochemical properties - plant protection - soil chemistry - soil properties
    The development and duration of accelerated degradation of nematicides were studied in incubation experiments with soils from three experimental fields that had been treated annually for three to ten years with aldicarb, oxamyl, ethoprophos, fenamiphos or 1,3-dichloropropene. Highly accelerated degradation rates were measured for aldicarb, oxamyl and ethoprophos in a sandy soil (pH 7.3) treated three times. After five years without further treatments, these high rates were still found for aldicarb and oxamyl, but not for ethoprophos. In another field (sandy soil, pH 5.6) little or no increase in the degradation rates was measured in plots that had been treated ten times.
    Volatilization of tri-allate, ethoprophos and parathion measured with four methods after spraying on a bare sandy soil
    Berg, F. van den; Bor, G. ; Smelt, J.H. ; Smidt, R.A. ; Peppel-Groen, A.E. van de; Leistra, M. - \ 1996
    In: Pesticides in soil and the environment; abstracts. Stratford-upon-Avon (UK), s.n., 1996 - p. 157 - 158.
    Overwaaien van bestrijdingsmiddelen naar waterlopen bij bespuiting in de bloembollenteelt
    Peppel - Groen, A.E. van de; Smidt, R.A. ; Leistra, M. - \ 1995
    Wageningen : DLO-Staring Centrum (Rapport / DLO-Staring Centrum 367) - 37
    lucht - luchtverontreiniging - kanalen - hygiëne - bloembollen - persistentie - pesticidenresiduen - pesticiden - gewasbescherming - rivieren - spuiten - waterlopen - oppervlaktewater - water - waterverontreiniging - waterkwaliteit - air - air pollution - canals - hygiene - ornamental bulbs - persistence - pesticide residues - pesticides - plant protection - rivers - spraying - streams - surface water - water - water pollution - water quality
    Het overwaaien van bestrijdingsmiddelen bij bespuitingen in de bloembollenteelt, als mogelijke bron van verontreiniging van waterlopen, is onderzocht. De methoden voor het meten van de depositie van de voorbeeldstoffen esfenvaleraat, chloridazon en Brilliant Sulfoflavine op verschillende collectoren zijn getoetst. In de drie veldproeven nam de aërieke depositie buiten het gewas af tot respectievelijk 0,6%, 0,9% en 2,1% van de dosering op de benedenwindse slootrand (op 3 u 4 m afstand). De aërieke depositie op het wateroppervlak (op ongeveer 5 m afstand) lag rond 0,5% van de dosering. Een spuitvrije zone van 4 u 5 m breedte levert een grote bijdrage aan het verminderen van overwaaien van spuitvloeistof naar de waterlopen.
    Volatilization of tri-allate, ethoprophos and parathion measured with four methods after spraying on a sandy soil
    Bor, G. ; Berg, F. van den; Smelt, J.H. ; Smidt, R.A. ; Peppel-Groen, A.E. van de; Leistra, M. - \ 1995
    Wageningen : SC-DLO (Report / DLO - Winand Staring Centre 104) - 61
    lucht - hygiëne - luchtverontreiniging - gewasbescherming - pesticiden - pesticidenresiduen - persistentie - spuiten - zandgronden - air - hygiene - air pollution - plant protection - pesticides - pesticide residues - persistence - spraying - sandy soils
    At about eleven times after application of tri-allate, ethoprophos and parathion to a sandy soil, their rates of volatilization were determined by the aerodynamic method (AD), the Bowen-ratio method (BR), the theoretical-profile method (TP) and the Box method. The volatilization was highest for tri-allate and lowest for parathion. On the first day after application, the volatilization rate decreased sharply, but thereafter the decrease was more gradual. The differences in volatilization rate as determined with the AD, BR and TP methods were comparatively small. The rates determined with the Box method were mostly lower than those determined with the other methods.
    Transformation of aldicarb sulfoxide and aldicarb sulfone in four water-saturated sandy subsoils
    Smelt, J.H. ; Peppel-Groen, A.E. van de; Leistra, M. - \ 1995
    Pesticide science : a journal of international research and technology on crop protection and pest control 44 (1995)4. - ISSN 0031-613X - p. 323 - 334.
    microbiële afbraak - persistentie - pesticidenresiduen - pesticiden - fysicochemische eigenschappen - gewasbescherming - zandgronden - bodemchemie - bodemeigenschappen - microbial degradation - persistence - pesticide residues - pesticides - physicochemical properties - plant protection - sandy soils - soil chemistry - soil properties
    Accurate transformation rates of pesticide residues in aquifer material are needed to predict the ultimate effects of pesticide leaching on drinking-water resources. Even slow transformation rates in the groundwater zone can lead to substantial reduction of the concentrations. In this study the transformation of the oxidation products of aldicarb was studied in incubations with water-saturated subsoils collected at four sites in the Netherlands. The transformation rates and products varied with soil type, redox potential, and the concentration of the products. The transformation was very fast in an anaerobic subsoil (half-lives some weeks) but much slower (one to several years) in more aerobic subsoils.
    Vervluchtiging van EPTC, tri-allaat en parathion na bespuiting van een kleigrond
    Bor, G. ; Berg, F. van den; Smelt, J.H. ; Peppel-Groen, A.E. van de; Leistra, M. - \ 1995
    Wageningen : SC-DLO (Rapport 394) - 55 p.
    Op tien tijdstippen na de bespuiting van een onbegroeide kleigrond met EPTC, tri-allaat en parathion werden de snelheden van vervluchtiging van deze middelen bepaald met de kapmethode en de theoretisch-profielmethode (TP-methode). De vervluchtiging was het hoogst op de dag van toepassing. In de daaropvolgende droge periode was de vervluchtigingssnelheid relatief laag. Veertien dagen na toepassing nam de vervluchtigingssnelheid toe doordat de toplaag van de bodem was herbevochtigd door regen. Gemiddeld was de snelheid van vervluchtiging bepaald met de TP-methode lager dan die bepaald met de kapmethode, maar het verschil was niet eenduidig.
    Volatilization of parathion and chlorothalonil after spraying onto a potato crop
    Berg, F. van den; Bor, G. ; Smidt, R.A. ; Peppel-Groen, A.E. van de; Smelt, J.H. ; Müller, T. ; Maurer, T. - \ 1995
    Wageningen : DLO Winand Staring Centre - 59
    lucht - luchtverontreiniging - hygiëne - persistentie - pesticidenresiduen - pesticiden - gewasbescherming - aardappelen - solanum tuberosum - spuiten - nederland - flevoland - air - air pollution - hygiene - persistence - pesticide residues - pesticides - plant protection - potatoes - solanum tuberosum - spraying - netherlands - flevoland
    At fourteen times after application of parathion and chlorothalonil to a potato crop their rates of volatilization were determined by the aerodynamic and Bowen ratio methods. The highest volatilization rate of parathion occurred shortly after application. In the first hours after application its volatilization rate decreased sharply; thereafter it decreased more gradually. The volatilization rate of chlorothalonil at one week after application did not differ much from that shortly after application. Weather conditions in the first twenty-four hours after application of both pesticides were simulated in a chamber. The volatilization of parathion in the chamber had the same order of magnitude as that determined in the field.
    Vervluchtiging van bestrijdingsmiddelen na bespuiting van de bodem
    Berg, F. van den; Bor, G. ; Smidt, R.A. ; Peppel-Groen, A.E. van de; Smelt, J.H. - \ 1995
    Gewasbescherming 26 (1995)1. - ISSN 0166-6495 - p. 25 - 25.
    Emissie van bestrijdingsmiddelen vanaf de bodem naar de lucht
    Berg, F. van den; Bor, G. ; Smelt, J.H. ; Smit, R.A. ; Peppel-Groen, A.E. van de - \ 1995
    In: Van onderzoek naar voorlichting; zand 1994; onderzoeksresultaten van het Regionaal Onderzoek Centrum Akkerbouw 'Vredepeel' - p. 74 - 75.
    Metingen voor het herbicide simazin in grondwater en drainwater van twee fruitteeltpercelen
    Leistra, M. ; Peppel - Groen, A.E. van de; Bor, G. - \ 1993
    Wageningen : DLO-Staring Centrum (Rapport / DLO-Staring Centrum 258) - 39
    drainagewater - fruitteelt - uitspoelen - persistentie - pesticidenresiduen - pesticiden - gewasbescherming - bodem - waterkwaliteit - drainage water - fruit growing - leaching - persistence - pesticide residues - pesticides - plant protection - soil - water quality
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