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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    Smullen van beschimmeld stro
    Hendriks, W.H. ; Cone, J.W. - \ 2018
    biobased economy - animal nutrition - biomass - fibres - enzymes - digestibility - straw
    Delicious mouldy straw : animal nutrition
    Hendriks, W.H. ; Cone, J.W. - \ 2018
    biobased economy - animal nutrition - biomass - fibres - enzymes - digestibility - straw
    On the role of soil organic matter for crop production in European arable farming
    Hijbeek, Renske - \ 2017
    Wageningen University. Promotor(en): M.K. van Ittersum, co-promotor(en): H.F.M. ten Berge. - Wageningen : Wageningen University - ISBN 9789463436632 - 211
    soil fertility - soil fertility management - soil management - soil conservation - organic matter - soil organic matter - nitrogen - nitrogen fertilizers - green manures - manures - straw - soil carbon sequestration - cover crops - crop yield - yields - meta-analysis - food security - europe - drivers - barriers - bodemvruchtbaarheid - bodemvruchtbaarheidsbeheer - bodembeheer - bodembescherming - organische stof - organisch bodemmateriaal - stikstof - stikstofmeststoffen - groenbemesters - mest - stro - koolstofvastlegging in de bodem - dekgewassen - gewasopbrengst - opbrengsten - meta-analyse - voedselzekerheid - europa - chauffeurs - barrières

    The aim of this thesis was to improve understanding of the role of organic inputs and soil organic matter (SOM) for crop production in contemporary arable farming in Europe. For this purpose, long-term experiments were analysed on the additional yield effect of organic inputs and savings in mineral fertiliser. In addition, a farm survey was conducted to find drivers and barriers for the use of organic inputs and to assess if arable farmers in Europe perceive a deficiency of SOM.

    The findings in this thesis suggest that at least on the shorter term, on average, there seems to be no immediate threat from a deficiency of SOM to crop production in arable farming in Europe. The long-term experiments showed that with sufficient use of only mineral fertilisers, on average, similar yields could be attained over multiple years as with the combined use of organic inputs and mineral fertiliser. This was reflected in the farm survey, in which a large majority of farmers indicated not to perceive a deficiency of SOM. Analysis of long-term experiments also showed that more mineral fertiliser N was saved when using farmyard manure at high N rates (with mineral fertiliser application) than at low N rates (without mineral fertiliser application), based on comparisons at equal yield.

    Specific crops and environments did benefit from organic inputs and more SOM in terms of crop production. Long-term experiments showed that organic inputs give benefit to crop production in wet climates and on sandy soils. In addition, farmers perceived a higher deficiency of SOM on steep slopes, sandy soils, wet and very dry climates. The additional yield effect of organic inputs was significant for potatoes. More in general, farmers who cultivated larger shares of their land with specialized crops (including potatoes, sugar beets, onions and other vegetables) than cereals perceived a higher deficiency of SOM. It seems that while the functions of SOM can be replaced with technical means to a large extent (e.g. tillage, use of mineral fertilisers), there are limits to this technical potential when environmental conditions are more extreme and crops are more demanding.

    The farm survey revealed that farmers perceive a trade-off between improved soil quality on the one hand and increased pressures from weeds, pests and diseases and financial consequences on the other hand when using organic inputs. If policies aim to stimulate the maintenance or increase of SOM, more insight is needed into the conditions that regulate the pressures of weeds, pests and diseases in response to organic inputs. Financial consequences (at least on the short term) should also be accounted for. More importantly however, benefits from SOM for crop production cannot be taken for granted. Only in specific situations such benefits will exist. If European policies on SOM aim to include benefits for crop production, focus should be on areas with more extreme environmental conditions (very dry or wet climates, steep slopes, sandy soils), or cropping systems with more specialized or horticultural crops rather than cereals.

    Occurrence of chloramphenicol in cereal straw in north-western Europe
    Nordkvist, Erik ; Zuidema, Tina ; Herbes, Rik G. ; Berendsen, Bjorn J.A. - \ 2016
    Food Additives & Contaminants. Pt. A, Chemistry, Analysis, Control, Exposure & Risk Assessment 33 (2016)5. - ISSN 1944-0049 - p. 798 - 803.
    animal feed - bedding - Chloramphenicol - ELISA - LC-MS/MS - straw - survey

    Two surveys are presented of straw analysed for naturally occurring chloramphenicol (CAP), a drug banned for use in food-producing animals. In the first study, CAP was analysed by LC-MS/MS and detected in 37 out of 105 straw samples originating from the Netherlands, France, the UK, Germany and Denmark. The highest level found was 6.3 µg kg−1, the average 0.6 µg kg−1 and the median 0.2 µg kg−1. The second study included a method comparison between ELISA and LC-MS/MS and a survey of CAP in cereal straw sampled at farms in all areas of Sweden. A total of 215 samples were screened by ELISA and a subset of 26 samples was also analysed by LC-MS/MS. Fifty-four of the samples contained more than 1 µg kg−1 CAP and the highest level found was 32 µg kg−1 (confirmed by LC-MS/MS). The highest contents of CAP in this study were allocated to the Baltic sea coast in the south-eastern part of Sweden (the county of Skåne and the Baltic Sea isle of Gotland). These results indicate a high incidence of CAP in straw in north-west Europe and have a severe impact on the enforcement of European Union legislation.

    Evaluation of king oyster mushroom strains (Pleurotus eryngii) on selective lignin degradation in wheat straw: An update
    Sonnenberg, A.S.M. ; Visser, M.H.M. ; Lavrijssen, B. ; Cone, J.W. ; Hendrickx, P.M. - \ 2016
    Wageningen : Wageningen UR (PPO/PRI report 2016-4) - 21
    mushrooms - edible fungi - lignin - postharvest quality - agaricus bisporus - composts - nutrient use efficiency - pleurotus eryngii - lentinula edodes - wheat straw - miscanthus - straw - paddestoelen - eetbare paddestoelen - lignine - kwaliteit na de oogst - agaricus bisporus - compost - nutriëntengebruiksefficiëntie - pleurotus eryngii - lentinula edodes - tarwestro - miscanthus - stro
    The collection of Plant Breeding contains a large number of strains of Pleurotus eryngii and Lentinula edodes, two fungi producing edible mushrooms and also known by their selective degradation of lignin in lignocellulosic materials.
    The natural occurrence of chloramphenicol in crops
    Berendsen, B.J.A. ; Zuidema, T. ; Jong, J. de - \ 2015
    Wageningen : RIKILT Wageningen UR (RIKILT report 2015.009)
    chlooramfenicol - antibiotica - stro - halfwaardetijd - stabiliteit - bodemgiftigheid - streptomyces venezuelae - opname van contaminanten - voedselveiligheid - chloramphenicol - antibiotics - straw - half life - stability - soil toxicity - streptomyces venezuelae - contaminant uptake - food safety
    Unexpected findings of the banned antibiotic chloramphenicol in products of animal origin, feed and straw prompted urgent investigation. Therefore a monitoring study in straw was carried out. The monitoring showed that in 37 sample chloramphenicol was detected. In 7 samples a concentration above 0.3 μg kg-1 was found with the highest result at 6.8 μg kg-1. Next the hypothesis was studied that the chloramphenicol is naturally present in soil, through production by soil bacteria, and subsequently can be transferred to crops. First, the stability of chloramphenicol in soil was studied. The fate of chloramphenicol highly depends on soil type and showed a half-life of approximately one day in non-sterile topsoil. It was found to be more stable in sub-soil and sterile soils. Second, the production of chloramphenicol in soil was studied and it was confirmed that Streptomyces venezuelae can produce chloramphenicol at appreciable amounts in non-sterile soil. Third, a transfer study was carried out using wheat and corn grown on three different soils, that were weekly exposed to aqueous chloramphenicol solutions at different levels. Chloramphenicol was taken up by crops as determined by chiral liquid chromatography coupled to tandem mass spectrometric analysis and the levels in crop were found to be bioavailability related. It was concluded that chloramphenicol residues can occur naturally in crops as a result of the production of chloramphenicol by soil bacteria in their natural environment and subsequent uptake by crops.
    Strategies for improving water use efficiency in livestock feed production in rain-fed systems
    Kebebe, E.G. ; Oosting, S.J. ; Haileslassie, A. ; Duncan, A.J. ; Boer, I.J.M. de - \ 2015
    Animal 9 (2015)05. - ISSN 1751-7311 - p. 908 - 916.
    sub-saharan africa - life-cycle assessment - agriculture - management - ethiopia - adoption - intensification - farmers - trials - straw
    Livestock production is a major consumer of fresh water, and the influence of livestock production on global fresh water resources is increasing because of the growing demand for livestock products. Increasing water use efficiency of livestock production, therefore, can contribute to the overall water use efficiency of agriculture. Previous studies have reported significant variation in livestock water productivity (LWP) within and among farming systems. Underlying causes of this variation in LWP require further investigation. The objective of this paper was to identify the factors that explain the variation in LWP within and among farming systems in Ethiopia. We quantified LWP for various farms in mixed-crop livestock systems and explored the effect of household demographic characteristics and farm assets on LWP using ANOVA and multilevel mixed-effect linear regression. We focused on water used to cultivate feeds on privately owned agricultural lands. There was a difference in LWP among farming systems and wealth categories. Better-off households followed by medium households had the highest LWP, whereas poor households had the lowest LWP. The variation in LWP among wealth categories could be explained by the differences in the ownership of livestock and availability of family labor. Regression results showed that the age of the household head, the size of the livestock holding and availability of family labor affected LWP positively. The results suggest that water use efficiency could be improved by alleviating resource constraints such as access to farm labor and livestock assets, oxen in particular.
    The molar H: Corg ratio of biochar is a key factor in mitigating N2O emissions from soil
    Cayuela, M.L. ; Jeffery, S.L. ; Zwieten, L. van - \ 2015
    Agriculture, Ecosystems and Environment 202 (2015). - ISSN 0167-8809 - p. 135 - 138.
    greenhouse-gas emissions - rice - impact - straw - co2 - carbon - china - paddy - plant - denitrification
    A previously published meta-analysis of biochar impacts on soil N2O emissions by Cayuela et al. (2014) found a “grand mean” reduction in N2O emissions of 54 ± 6% following biochar application to soil. Here we update this analysis to include 26 additional manuscripts bringing the total to 56 articles. The updated meta-analysis confirms that biochar reduces soil N2O emissions by 49 ± 5% (mean ± 95% confidence interval). Importantly, this meta-analysis has sufficient data to investigate the impact of biochar under field conditions, showing a statistically significant lower average reduction in the field (28 ± 16%) compared to controlled laboratory studies (54 ± 3%). A key finding is the importance of the molar H:Corg ratio of biochar in determining mitigation of N2O. Biochars with a molar H:Corg ratio 0.5 were less effective at 40 ± 16%. Together with previously published information, our new results suggest that a key mitigation mechanism is linked to the degree of polymerization and aromaticity of biochar.
    Occurence of mycotoxins and pesticides in straw and hay used as animal feed
    Mol, J.G.J. ; Rijk, T.C. de; Egmond, H.J. van; Jong, J. de - \ 2014
    Wageningen : RIKILT Wageningen UR (RIKILT report 2014.006)
    mycotoxinen - pesticiden - stro - hooi - diervoedering - veehouderij - voederveiligheid - dierenwelzijn - mycotoxins - pesticides - straw - hay - animal feeding - livestock farming - feed safety - animal welfare
    The aim of this survey was to provide data on the occurrence of mycotoxins and pesticide residues in straw and hay used as animal feed in the Netherlands.
    BOGO van groen grondstoffen naar biobased materialen. Van stro naar melkzuur.
    Bakker, R.R.C. ; Lopez Contreras, A.M. ; Broek, L.A.M. van den - \ 2013
    Wageningen : FBR
    lesmaterialen - biopolymeren - melkzuur - stro - fermentatie - beroepsopleiding (hoger) - biobased economy - chemie op basis van biologische grondstoffen - handleidingen - teaching materials - biopolymers - lactic acid - straw - fermentation - professional education - biobased economy - biobased chemistry - guide books
    Practicumhandleiding voor hbo. In dit practicum wordt melkzuur gemaakt uit stro.
    Rice Straw and Wheat Straw - Potential feedstocks for the Biobased Economy
    Bakker, R.R.C. ; Elbersen, H.W. ; Poppens, R.P. ; Lesschen, J.P. - \ 2013
    Utrecht : NL Agency - 31
    rijststro - tarwestro - stro - reststromen - beschikbaarheid - kosten - logistiek - duurzaamheid (sustainability) - biomassa - biobased economy - rice straw - wheat straw - straw - residual streams - availability - costs - logistics - sustainability - biomass - biobased economy
    Dit rapport zet de mogelijkheden voor het gebruik van rijststro en tarwestro in de biobased economy op een rij. Er is gekeken naar beschikbaarheid, kosten (vooral van inzameling en logistiek) en duurzaamheidsaspecten.
    Teeltonderzoek haver in het kader van de ontwikkeling van een glutenvrije keten
    Timmer, R.D. ; Kamp, J.A.L.M. - \ 2013
    Lelystad : PPO AGV - 23
    akkerbouw - haver - stro - rassen (planten) - opbrengst - groeiregulatoren - arable farming - oats - straw - varieties - outturn - growth regulators
    De strostevigheid van haver is onder de gemiddelde Nederlandse zomerse weersomstandigheden een zwak punt, en in de rassenvergelijkingen is hier sterk naar gekeken. Ook via de toepassing van een groeiregulator is de strostevigheid van haver te verbeteren en kunnen de oogstrisico’s worden beperkt. In 2012 en 2013 zijn daarom proeven uitgevoerd met groeiregulatoren. Om een haverteelt in Nederland van de grond te krijgen zal het gewas moeten kunnen concurreren met andere granen. Hiervoor is een voldoende hoog opbrengstniveau nodig. In de rassenvergelijkingen was naast strostevigheid het opbrengstniveau dan ook het belangrijkste selectiecriterium.
    Market potential of Ukrainian herbaceous biomass : analyzing market obstacles and promoting business strategies
    Jamblinne, P. de; Poppens, R.P. ; Elbersen, H.W. ; Schoonewille, W. - \ 2013
    Nivelles : Tuzetka - 63
    biomassa - marktonderzoek - bio-energie - stro - panicum virgatum - phragmites - export - oekraïne - nederland - biobased economy - biomass - market research - bioenergy - straw - panicum virgatum - phragmites - exports - ukraine - netherlands - biobased economy
    The Pellets for Power project, funded by Agentschap NL under the Sustainable Biomass Import program, is defining ways for sustainable biomass production in Ukraine. It is focused on three biomass sources: straw, switchgrass and reed. However, so far commercialization of Ukrainian non-wood biomass has not been successful. This report addresses the obstacles for successful commercialization, as experienced by project partner Tuzetka, focusing on biomass for energy (mostly heating and cooling) conversion.
    Herbaceous biomass supply chains : assessing the greenhouse gas balance, economics and ILUC effects of Ukrainian biomass for domestic and Dutch energy markets
    Poppens, R.P. ; Lesschen, J.P. ; Galytska, M. ; Jamblinne, P. de; Kraisvitnii, P. ; Elbersen, H.W. - \ 2013
    Wageningen : Wageningen UR - Food & Biobased Research - 52
    biomassa productie - duurzaamheid (sustainability) - duurzaamheidsscan - phragmites - stro - panicum virgatum - broeikasgassen - kosten-batenanalyse - indirecte veranderingen van landgebruik - oekraïne - biobased economy - biomass production - sustainability - sustainability scan - phragmites - straw - panicum virgatum - greenhouse gases - cost benefit analysis - indirect land use change - ukraine - biobased economy
    This report describes the supply chain performance for three types of biomass feedstock (reed, straw and switchgrass) and for three sustainability aspects, i.e. the greenhouse gas balance, economics and Indirect Land Use change effects (ILUC). Calculations are based on a fictional supply chain set-up, as no large-scaled commercial biomass operations have been initiated yet by the project partners. The analysis was performed for use of biomass pellets both on the domestic energy market and the Dutch electricity market, in four different supply chain configurations.
    Pellets for Power: sustainable biomass import from Ukraine : public final report
    Elbersen, H.W. ; Poppens, R.P. ; Lesschen, J.P. ; Sluis, T. van der; Galytska, M. ; Kulyk, M. ; Jamblinne, P. de; Kraisvitnii, P. ; Rii, O. ; Hoekstra, T. - \ 2013
    Wageningen : Wageningen UR - Food & Biobased Research - 35
    bio-energie - biomassa - duurzaamheid (sustainability) - biomassa productie - import - projecten - oekraïne - nederland - biobased economy - phragmites - stro - panicum virgatum - bioenergy - biomass - sustainability - biomass production - imports - projects - ukraine - netherlands - biobased economy - phragmites - straw - panicum virgatum
    This project responds to the mismatch between on the one hand a growing demand for biomass on the Dutch and EU energy markets with a limited biomass potential and on the other hand large amounts of biomass and biomass potential currently underutilised in Ukraine. Ukraine itself is seen as a very promising location for sustainable biomass production but is also plagued by economic depression, land degradation, depopulation and high cost for natural gas. The Ukrainian company Phytofuel and the Belgian company Tuzetka recognized the opportunity. Together with Wageningen UR in The Netherlands they started the first experiments with switchgrass and also initiated pelletisation of straw and assessed the opportunity to use available reed stands in the Poltava region. The project aimed to: develop a sustainable business model for pelletizing biomass residues and biomass crops in Ukraine for domestic and NL energy markets; test sustainability of underutilized biomass use and energy crop production on marginal land while avoiding indirect Land Use Changes (iLUC).
    the Pellets for Power project DBI01010 sustainable biomass import from Ukraine
    Elbersen, Wolter - \ 2013
    biomass - biomass production - sustainability - straw - phragmites - panicum virgatum - ukraine - biobased economy
    Life cycle assessment of segregating fattening pig urine and feces compared to conventional liquid manure management
    Vries, J.W. de; Aarnink, A.J.A. ; Groot Koerkamp, P.W.G. ; Boer, I.J.M. de - \ 2013
    Environmental Science and Technology 47 (2013)3. - ISSN 0013-936X - p. 1589 - 1597.
    greenhouse-gas emissions - environmental consequences - farming systems - slurry - straw - soils - lca
    Gaseous emissions from in-house storage of liquid animal manure remain a major contributor to the environmental impact of manure management. Our aim was to assess the life cycle environmental consequences and reduction potential of segregating fattening pig urine and feces with an innovative V-belt system and to compare it to conventional liquid manure management, i.e. the reference. Moreover, we aimed at analyzing uncertainty of the outcomes related to applied emission factors. We compared a reference with two scenarios: segregation with solid, aerobically, stored feces and with liquid, anaerobically, stored feces. Results showed that, compared to the reference, segregation reduced climate change (CC) up to 82%, due to lower methane emission, reduced terrestrial acidification (TA) and particulate matter formation (PMF) up to 49%, through lower ammonia emission, but increased marine eutrophication (ME) up to 11% through nitrogen oxide emission from storage and nitrate leaching after field application. Fossil fuel depletion did not change. Segregation with liquid feces revealed lower environmental impact than segregation with solid feces. Uncertainty analysis supported the conclusion that segregating fattening pig urine and feces significantly reduced CC, and additionally, segregation with liquid feces significantly reduced TA and PMF compared to the reference.
    Stro in de sloot : onderdeel van IP-KRW project ‘Landbouw Centraal’
    Buck, A.J. de; Schoot, J.R. van der; Harmsen, J. - \ 2012
    Lelystad : Praktijkonderzoek Plant & Omgeving, Akkerbouw, Groene Ruimte en Vollegrondsgroenten - 21
    boerderijen - erven - afvloeiingswater - sloten - biologische filtratie - stro - melkveehouderij - farm dwellings - yards - runoff water - ditches - biological filtration - straw - dairy farming
    Hemelwater wat op het erf van melkveebedrijven valt wordt geheel of deels afgevoerd naar het oppervlaktewater. Eventueel aanwezige voerresten en andere verontreinigingen spoelen daarbij mee naar de sloot. Dit leidt tot ongewenste puntbelastingen in het watersysteem. Binnen het project KRW ‘Landbouw Centraal’ is bij een zestal melkveehouders interesse ontstaan voor het toepassen van een strofilter in de sloot om erfwater te zuiveren. Dit rapport beschrijft beknopt de theorie van de werking, de aanleg van de pilot en de meetresultaten van het laatste kwartaal van 2011.
    Comparison of woody pellets, straw pellets, and delayed harvest system herbaceous biomass (switchgrass and miscanthus): analysis of current combustion techniques determining the value of biomass
    Hui, Y. - \ 2011
    [S.l.] : S.n.
    bio-energie - bolletjes - energiegehalte - hout - strobrokken - stro - verbranding - miscanthus - panicum virgatum - biobased economy - bioenergy - pellets - energy content - wood - straw pellets - straw - combustion - miscanthus - panicum virgatum - biobased economy
    Since the energy consumption is growing fast, it is important to find alternative resources for the future generation energy supply. This study is going to compare the woody pellets, straw pellets and delayed harvest system biomass (switchgrass and miscanthus) from the combustion technique perspective. What problems during the thermal conversion will determine the value of herbaceous pellets lower than wood pellets? Both literature review and consulting with experts are used in the research. Although at this moment, application of herbaceous biomass will cause problems like corrosion, slagging and fouling, many solutions have already in their experimental stage. As the need of energy increase, the market for herbaceous biomass is bright.
    Stro afvoeren? Eerst rekenen : zelfs bij hoge stro-prijzen is verhakselen soms voordeliger
    Tramper, Marcel - \ 2011
    straw - straw disposal - arable farming - cereals - straw incorporation - chopping - organic matter - nutrient accounting system
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