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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    Verregend
    Rijk, Joost - \ 2020
    Een robuust Markermeer
    Verdonschot, P.F.M. - \ 2020
    Vakblad Natuur Bos Landschap 17 (2020)166. - ISSN 1572-7610 - p. 13 - 15.
    Het Rijk wil een robuust Markermeer dat met de huidige nutriëntenstromen een natuurlijk(er) peil krijgt met meer litorale en moeraszones. De Marker Wadden draagt daar slechts enkele procenten aan bij, maar we hebben circa 50% nodig voor een gezond functionerend meer. Met het 5-S-Model als handvat wordt uitgelegd waarom dit nodig is.
    Hoe rijk is de Waddenzee? : Wageningen Marine Research Regiocentrum Yerseke
    Koning, Susan de - \ 2020
    Visserijnieuws.nl
    ‘Nature offers us plenty of genetic variation’
    Kik, Chris - \ 2020
    Hoe rijk is de Waddenzee?
    Koning, Susan de - \ 2020
    Wageningen Marine Research
    Nationale analyse waterkwaliteit : Onderdeel van de Delta-aanpak Waterkwaliteit
    Galen, Frank van; Osté, Leonard ; Boekel, E.M.P.M. van - \ 2020
    Den Haag : PBL (Planbureau voor de Leefomgeving) (PBL Publication 4002) - 232 p.
    Dit rapport gaat over de resultaten van de Nationale analyse waterkwaliteit. De analyse is gebaseerd op gezamenlijk feitenonderzoek van het Rijk, waterbeheerders, provincies, maatschappelijke organisaties, kennisinstituten en belanghebbenden. De nationale analyse vormt de kennisbasis voor het opstellen van de maatregelpakketten voor de volgende ronde van de zogenoemde stroomgebiedbeheerplannen (2022-2027) voor de Kaderrichtlijn Water (KRW).
    UAV-based Multispectral & Thermal dataset for exploring the diurnal variability, radiometric & geometric accuracy for precision agriculture
    Kallimani, Christina ; Heidarian Dehkordi, Ramin ; Evert, Frits van; Kooistra, Lammert ; Rijk, Bert - \ 2020
    Wageningen University & Research
    multispectral - thermal infrared - diurnal variability - unmanned aerial vehicles (UAV) - precision agriculture - wheat - potato - barley
    To explore the diurnal variations, radiometric and geometric accuracy of UAV-based data for precision agriculture, a comprehensive dataset was created in a one-day field campaign (21 June 2017). The multi-sensor data set covers wheat, barley & potato experimental fields, located in Wageningen University and Research (WUR) farm maintained by Unifarm. UAV-based images were collected with several sensors over the experimental area, starting from 7:25am and ending at 20:00pm local solar time. The dataset consists of images collected by 9 flights with senseFly MSP4C, 9 with Parrot Sequoia, 2 with Slant Range P3, 5 with DJI Zenmuse X3 NIR, 4 with the senseFly Thermo-map and 1 with the RGB Sony WX-220. Additionally, validation measurements at radiometric calibration plates and plant sample locations were taken with a Cropscan handheld spectrometer and a tec5 Handyspec spectrometer. The dataset consists of the validation measurements, the raw images and the processed orthomosaics (both with and without geometric correction).
    UAV-based Multispectral & Thermal dataset for exploring the diurnal variability, radiometric & geometric accuracy for precision agriculture
    Kallimani, Christina ; Heidarian, Ramin ; Evert, Frits K. van; Rijk, Bert ; Kooistra, Lammert - \ 2020
    ODjAR : open data journal for agricultural research 6 (2020). - ISSN 2352-6378 - p. 1 - 7.
    To explore the diurnal variations, radiometric and geometric accuracy of UAV-based data for precision agriculture, a comprehensive dataset was created in a one-day field campaign (21 June 2017). The multi-sensor data set covers wheat, barley & potato experimental fields, located in Wageningen University and Research (WUR) farm maintained by Unifarm. UAV-based images were collected with several sensors over the experimental area, starting from 7:25am and ending at 20:00pm local solar time. The dataset consists of images collected by 9 flights with senseFly MSP4C, 9 with Parrot Sequoia, 2 with Slant Range P3, 5 with DJI Zenmuse X3 NIR, 4 with the senseFly Thermo-map and 1 with the RGB Sony WX-220. Additionally, validation measurements at radiometric calibration plates and plant sample locations were taken with a Cropscan handheld spectrometer and a tec5 Handyspec spectrometer. The dataset consists of the validation measurements, the raw images and the processed orthomosaics (both with and without geometric correction).
    Dronebeelden als basis voor precisiewortelsnoei
    Dalfsen, P. van; Rijk, Bert ; Blom, Derek ; Hees, Dirk van - \ 2020
    Wageningen University & Research, Open Teelten - 1 p.
    EURL proficiency test for DON, acetyl-DONs, and DON-3G in cereals
    Pereboom-de Fauw, D.P.K.H. ; Dam, R.C.J. van; Rijk, T.C. de; Mol, J.G.J. ; Nijs, W.C.M. de - \ 2020
    Wageningen Food Safety Research is EU Reference Laboratory (EURL) for mycotoxins & plant toxins in food and feed. The EURL must ensure comparability and reliability of National Reference Laboratories (NRLs), assigned by each EU member state. One tool for this is to organise proficiency tests (PT). The PT described here was organised in 2018 for the quantitative determination of deoxynivalenol (DON), 3-acetyl-DON, 15-acetyl- DON, and DON-3-glucoside (DON-3G). Relevant levels: currently only DON is regulated. Maximum limits for food range from 200-1750 μg/kg, for feed guidance levels of 0.9-12 mg/kg apply. For risk assessment, besides DON, the measurement of the acetyl-DONs and DON-3G is recommended by EFSA since they contribute to the overall exposure. Target LOQs for this purpose are 50-100 μg/kg for DON, and 10-20 μg/kg for the DON conjugates.
    Interlaboratory variability in quantitative determination of mycotoxins
    Mol, J.G.J. ; Rijk, T.C. de; Mulder, P.P.J. ; Nijs, W.C.M. de - \ 2020
    In the field of mycotoxins the (modified) Horwitz equation is commonly used to predict the achievable interlaboratory precision, and as bench mark for assessment of laboratory performance in proficiency tests. It is also used to assess acceptability of methods validated through collaborative studies (HorRat). The validity of the Horwitz equation is disputed.
    Disentangling genetic and non-genetic components of yield trends of Dutch forage crops in the Netherlands
    Schils, R.L.M. ; Berg, W. Van den; Schoot, J.R. Van der; Groten, J.A.M. ; Rijk, B. ; Ven, G.W.J. Van de; Middelkoop, J.C. Van; Holshof, G. ; Ittersum, M.K. van - \ 2020
    Field Crops Research 249 (2020). - ISSN 0378-4290
    Breeding - Lolium perenne L. - Management - Yield gap - Zea mays L.

    Grass and forage maize are important forage crops in ruminant production systems in the temperate regions in northwest Europe. High yields of these crops contribute to farm profitability and local provision of feed, and hence local circularity of biomass and nutrients. Variety choice is an important option to raise potential and actual yields. We analysed 40 years of perennial ryegrass and 25 years of forage maize yield data from Value of Culture and Use (VCU) experiments to determine genetic and non-genetic trends of yields in time. For maize, we calculated an annual genetic trend of +173 kg DM ha−1 and a non-genetic trend of +65 kg DM ha−1. Further analysis of the non-genetic trend showed that maize yields increased with increasing temperature sum during the growing season, and with earlier sowing. The feeding value of forage maize showed a genetic trend of +1.7 feed unit milk (VEM) kg DM−1 year−1. The annual genetic gain of perennial ryegrass was +44 kg DM ha−1. In the grass trials we found opposing non-genetic trends for cutting and grazing. Further analysis of the non-genetic trend showed that drought and the number of days with ground frost during the growing season had a negative effect on yield. We compared the average yields and trends in VCU trials with those of on-farm yields. The on-farm maize yields showed an annual trend of +195 kg DM ha−1. We estimated an average realisation of the genetic gains of 75 % in farming practice, implying a widening gap between genetic potential and on-farm yields. Averaged over the entire period, on-farm maize yields were 4.6 t DM ha−1 (24%) lower than the yields of the VCU trials. The average annual on-farm grass yields did not show any trend, and were 1.6 t DM ha−1 (13%) lower than the yields of the VCU trials. In conclusion, our study revealed significant positive genetic and varying non-genetic trends in DM yields of forage maize and perennial ryegrass, the two dominant forage crops in the Netherlands. On-farm yields showed significant positive trends for forage maize, but no trend for grassland.

    Dietary Intake Assessment: From Traditional Paper-Pencil Questionnaires to Technology-Based Tools
    Brouwer-brolsma, Elske M. ; Lucassen, Desiree ; Rijk, Marielle G. De; Slotegraaf, Anne ; Perenboom, Corine ; Borgonjen, Karin ; Siebelink, Els ; Feskens, Edith J.M. ; Vries, Jeanne H.M. De - \ 2020
    In: International Symposium on Environmental Software Systems (ISESS 2020) Wageningen : Springer (IFIP Advances in Information and Communication Technology ) - ISBN 9783030398149 - p. 7 - 23.
    Self-reported methods of recall and real-time recording are the most commonly used approaches to assess dietary intake, both in research as well as the health-care setting. The traditional versions of these methods are limited by various methodological factors and burdensome for interviewees and researchers. Technology-based dietary assessment tools have the potential to improve the accuracy of the data and reduce interviewee and researcher burden. Consequently, various research groups around the globe started to explore the use of technology-based tools. This paper provides an overview of the: (1) most-commonly used and generally accepted methods to assess dietary intake; (2) errors encountered using these methods; and (3) web-based and app-based tools (i.e., Compl-eatTM, Traqq, Dutch FFQ-TOOLTM, and “Eetscore”) that have been developed by researchers of the Division of Human Nutrition and Health of Wageningen University during the past years.
    Shedding light on the rich-poor gap
    Scheffer, Marten ; Mirza, Usman - \ 2020
    Plasma Malondialdehyde and Risk of New-Onset Diabetes after Transplantation in Renal Transplant Recipients: A Prospective Cohort Study
    Yepes-Calderón, Manuela ; Sotomayor, Camilo ; Gomes-Neto, António ; Gans, Rijk ; Berger, Stefan ; Rimbach, Gerald ; Esatbeyoglu, Tuba ; Rodrigo, Ramón ; Geleijnse, Johanna ; Navis, Gerjan ; Bakker, Stephan - \ 2019
    Journal of Clinical Medicine 8 (2019)4. - ISSN 2077-0383
    New-onset diabetes after transplantation (NODAT) is a frequent complication in renal transplant recipients (RTR). Although oxidative stress has been associated with diabetes mellitus, data regarding NODAT are limited. We aimed to prospectively investigate the long-term association between the oxidative stress biomarker malondialdehyde (measured by high-performance liquid chromatography) and NODAT in an extensively phenotyped cohort of non-diabetic RTR with a functioning graft ≥1 year. We included 516 RTR (51 ± 13 years-old, 57% male). Median plasma malondialdehyde (MDA) was 2.55 (IQR, 1.92–3.66) µmol/L. During a median follow-up of 5.3 (IQR, 4.6–6.0) years, 56 (11%) RTR developed NODAT. In Cox proportional-hazards regression analyses, MDA was inversely associated with NODAT, independent of immunosuppressive therapy, transplant-specific covariates, lifestyle, inflammation, and metabolism parameters (HR, 0.55; 95% CI, 0.36–0.83 per 1-SD increase; p < 0.01). Dietary antioxidants intake (e.g., vitamin E, α-lipoic acid, and linoleic acid) were effect-modifiers of the association between MDA and NODAT, with particularly strong inverse associations within the subgroup of RTR with relatively higher dietary antioxidants intake. In conclusion, plasma MDA concentration is inversely and independently associated with long-term risk of NODAT in RTR. Our findings support a potential underrecognized role of oxidative stress in post-transplantation glucose homeostasis.
    Nederlands milieubeleid is breder dan belastingprikkels
    Woltjer, G.B. ; Rijk, P.J. ; Heide, C.M. van der - \ 2019
    ESB.nu
    Antibioticaresistente bacterien, resistentiegenen en antibiotica residuen in mest
    Schmitt, H. ; Blaak, H. ; Hoeksma, P. ; Schans, M.G.M. van de; Kemper, M. ; Rijk, S. de; Roda Husman, A.M. de - \ 2019
    Wageningen University & Research (RIVM briefrapport 2019-0112)
    Innovative lateral flow devices for the detection of pesticides harmful to bees
    Xu, Mang ; Hoof, R.A. van; Hamers, A.R.M. ; Rijk, T.C. de; Guo, Yirong ; Bovee, T.F.H. ; Peters, J. - \ 2019
    Conventional instrumental detection of pesticides is complex and time-consuming, and is not realistic at the Point Of Need. In the B-GOOD project, we applied a dual channel lateral flow device (LFD) that is able to detect six out of eight neonicotinoids based on monoclonal antibody interaction and found that these LFDs have strong potential for field application. Additionally, WFSR has developed a LFD prototype that detects fipronil, a pesticide which was responsible for the recent death of hundred-thousands of honey bees in the Netherlands. Other LFDs, for the detection of bee-harming pesticides are also under development. In the near future, B-GOOD is interested in applying the developed LFDs at the point of need.
    Wageningse hoogleraar Frankema krijgt drie ton om kloof tussen arm en rijk verder te onderzoeken
    Frankema, Ewout - \ 2019
    Designing intercrops for high yield, yield stability and efficient use of resources: Are there principles?
    Stomph, Tjeerd Jan ; Dordas, Christos ; Baranger, Alain ; Rijk, Joshua de; Dong, Bei ; Evers, Jochem ; Gu, Chunfeng ; Li, Long ; Simon, Johan ; Jensen, Erik Steen ; Wang, Qi ; Wang, Yuyun ; Wang, Zishen ; Xu, Huasen ; Zhang, Chaochun ; Zhang, Lizhen ; Zhang, Wei Ping ; Bedoussac, Laurent ; Werf, Wopke van der - \ 2019
    In: Advances in Agronomy Academic Press Inc. (Advances in Agronomy ) - p. 1 - 50.
    Biotic stresses - Cropping system design - Light - Nutrients - Product quality - Resource use efficiency - Water

    Intercropping is the simultaneous cultivation of plant species in the same field for a considerable proportion of their growing periods. Interest in intercropping for sustainable agriculture is on the rise and the number of scientific studies on intercropping is strongly increasing. Here we assess the current status of knowledge on factors that determine yield, yield stability and resource use efficiency of intercropping as compared to sole cropping. Distinguishing resource use into acquisition and conversion shows that intercrops are mainly improving acquisition rather than conversion efficiency. We also make an attempt to quantify the importance of reduced biotic stresses through pests, diseases, and weeds. We particularly focus on blank spots in the knowledge and possible bias in existing literature and ask which research approaches are needed to advance the field and pave the way for a wider usage of intercropping in modern sustainable agriculture.

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