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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    Land drainage strategies to cope with climate change in the Netherlands
    Ritzema, H.P. ; Stuyt, L.C.P.M. - \ 2015
    Acta Agriculturae Scandinavica Section B-Soil and Plant Science 65 (2015)Suppl.1. - ISSN 0906-4710 - p. 80 - 92.
    water management - egypt - delta
    Since the Middle Ages the Dutch have reclaimed many lakes and parts of the sea, creating polders. Drainage is required to use the land: for the inhabitants, for agriculture and for nature. Traditionally drainage was by gravity: through open (and later pipe) drains excess rainfall was transferred into open collector drains, from where the water was pumped out to a river, lake or the sea. Since the 1950s, land use has been changing towards a more diverse and intensive agriculture, more attention for nature, recreation and continuing urbanization. On top of this, the climate is changing: significant increases in precipitation, both average and extreme. Until recently, the solution to more excess water was to increase pump capacity. Yet the combined problems of climate change, sea level rise, subsidence and urbanization require more structural changes in water management. Drainage systems have to be modified to enable the shift from a strategy of rapid removal of all excess water to one that continuously controls water levels individually in each agricultural plot. A new approach of ‘retention, storage and controlled removal’ is being used to develop climate adaptation scenarios for the three hydro-ecological zones in the Netherlands, i.e.: (1) the man-made polder areas with marine clay soils along the North Sea coast and the former Zuider Sea; (2) the low-lying peat lands in the west and north; and (3) the sandy and loamy soils areas in the centre, south and east. New approaches for tailor-made drainage solutions following this strategy are being tested in various pilot areas in the three zones. Although the research is still ongoing, this paper presents the lessons learned to date related to the challenges, risks and limitations associated with the introduction of these new drainage strategies for coping with climate change in the Netherlands.
    Investigating the suitability of constructed wetlands for the treatment of water for fish farms
    Heijden, P.G.M. van der; Dien, F. van; El-Beshbishi, D.A. - \ 2015
    Wageningen : Centre for Development Innovation, Wageningen UR (Report / CDI 15-079) - 27
    wetlands - artificial wetlands - fish farms - heavy metals - farming - pesticides - waste water - tilapia - development projects - egypt - north africa - africa - wetlands - helofytenfilters - viskwekerijen - zware metalen - landbouw bedrijven - pesticiden - afvalwater - tilapia - ontwikkelingsprojecten - egypte - noord-afrika - afrika
    Many fish farms in Egypt rely on water of drainage canals to fill the fish ponds. There is a risk that this water is contaminated with pesticides and heavy metals. This report describes the results of a collaborative project that took place in 2012-2014 and that aimed to test the suitability of a constructed (engineered) wetland as treatment device for the removal of such pollutants from drainage canal water on a private fish farm in Egypt
    Metropolitan food supply in Egypt : market analysis hydroponics production for selected urban areas
    Waldhauer, N. ; Soethoudt, J.M. - \ 2015
    Wageningen : Wageningen UR - Food & Biobased Research (Report / Wageningen UR Food & Biobased Research 1551) - ISBN 9789462574052 - 24
    hydrocultuur - marketingkanalen - toekomst - internationale samenwerking - impact van toerisme - kosten-batenanalyse - egypte - hydroponics - marketing channels - future - international cooperation - tourism impact - cost benefit analysis - egypt
    Metropolitan food supply in Egypt : hydroponics production of leafy vegetables
    Waldhauer, N. ; Broek, W.H.A.M. van den; Soethoudt, J.M. ; Boerrigter, H.A.M. - \ 2015
    Wageningen : Wageningen UR - Food & Biobased Research (Report / Wageningen UR Food & Biobased Research 1548) - ISBN 9789462574038 - 15
    hydrocultuur - voedselzekerheid - verliezen na de oogst - internationale samenwerking - proefprojecten - kosten-batenanalyse - egypte - voedselvoorziening - hydroponics - food security - postharvest losses - international cooperation - pilot projects - cost benefit analysis - egypt - food supply
    This study incorporates the follow up activities of the two earlier missions of Wageningen UR/Food & Biobased Research (FBR) to Egypt, the exploration mission of 2013 (Broek and Boerrigter, 2014a) and the commitment mission of 2014 (Broek, Boerrigter and Waldhauer, 2014b), targeting the improvement of food security in Egypt in general and the reduction of post-harvest losses in particular.
    Zout afvalwater van zeebaarskwekerij geschikt voor teelt van zoutminnende gewassen en een tweede visteeltronde
    Blom, M. ; Heijden, P.G.M. van der - \ 2014
    Aquacultuur 4 (2014)29. - ISSN 1382-2764 - p. 9 - 16.
    aquacultuur - halofyten - combinatie - egypte - aquaculture - halophytes - combination - egypt
    Vis is een belangrijke bron van inkomsten voor Egypte. Niet alleen aan de kust, maar ook in de woestijn worden commerciële viskweekbedrijven opgezet. In Wadi Natroun, het gebied waar in de oudheid het zout vandaan werd gehaald om de overleden farao's te mummificeren, wordt op de boerderij 'Rula for Land Reclamation' door Wadi Fish sinds enige jaren ook vis gekweekt in water uit een zoute bron. In Aquacultuur 2014, nr. 1 is een bedrijfsreportage over Wadi Fish te vinden. Aanvankelijk werd het afvalwater van de kwekerij geloosd in de woestijn. Maar de Egyptische overheid oefent de laatste jaren steeds meer druk uit om zuinig om te gaan met water en met het woestijn-ecosysteem. Daarom is in 2010 een project gestart om te testen of de viskwekerij gecombineerd kan worden met een teelt van halofyten (ofwel zoutminnende gewassen) en of het afvalwater met de zgn. 'biofloc' methode (een waterzuinige viskweekmethode) weer voor visteelt kan worden gebruikt. Het bleek succesvol.
    Metropolitan food supply: commitment mission Egypt
    Broek, W.H.A.M. van den; Boerrigter, H.A.M. ; Waldhauer, N. - \ 2014
    Wageningen : Wageningen UR - Food & Biobased Research (Report / Wageningen UR Food & Biobased Research 1511) - ISBN 9789462573536 - 13
    verse producten - vennootschappen - egypte - ketenmanagement - agro-industriële ketens - voedselvoorziening - fresh products - partnerships - egypt - supply chain management - agro-industrial chains - food supply
    The present study is to investigate the commitment of potential participants to contribute to these opportunities and what their conditions are to the 3 main activities.
    A new and scalable approach for rural sanitation in Egypt : the village of Deir Gabal El-Tair as a pilot
    Harmsen, J. ; Ghodell, K.O. ; Tony, M.S.S.S. El; Wagieh, H. El; Michael, E. ; Helmy, E. ; Veen, F. van der - \ 2014
    Wageningen : Alterra, Wageningen-UR (Alterra-rapport 2584) - 81
    volksgezondheidsbevordering - water - waterbeschikbaarheid - egypte - sanitation - water - water availability - egypt
    Immune escape mutants of highly pathogenic avian influenza H5N1 selected using polyclonal sera: Identification of key amino acids in the HA protein
    Sitaras, I. ; Kalthof, D. ; Beer, M. ; Peeters, B.P.H. ; Jong, M.C.M. de - \ 2014
    PLoS ONE 9 (2014)2. - ISSN 1932-6203 - 13 p.
    virus hemagglutinin - antigenic drift - a viruses - monoclonal-antibodies - evolution - poultry - egypt - vaccination - molecule - neutralization
    Evolution of Avian Influenza (AI) viruses – especially of the Highly Pathogenic Avian Influenza (HPAI) H5N1 subtype – is a major issue for the poultry industry. HPAI H5N1 epidemics are associated with huge economic losses and are sometimes connected to human morbidity and mortality. Vaccination (either as a preventive measure or as a means to control outbreaks) is an approach that splits the scientific community, due to the risk of it being a potential driving force in HPAI evolution through the selection of mutants able to escape vaccination-induced immunity. It is therefore essential to study how mutations are selected due to immune pressure. To this effect, we performed an in vitro selection of mutants from HPAI A/turkey/Turkey/1/05 (H5N1), using immune pressure from homologous polyclonal sera. After 42 rounds of selection, we identified 5 amino acid substitutions in the Haemagglutinin (HA) protein, most of which were located in areas of antigenic importance and suspected to be prone to selection pressure. We report that most of the mutations took place early in the selection process. Finally, our antigenic cartography studies showed that the antigenic distance between the selected isolates and their parent strain increased with passage number.
    Metropolitan food supply : case study Cairo : a quick scan study to enhance fresh food supply and minimize postharvest losses
    Broek, W.H.A.M. van den; Boerrigter, H.A.M. - \ 2014
    Wageningen : Wageningen UR - Food & Biobased Research (Rapport / Food & Biobased Research 1466) - ISBN 9789461739889 - 27
    verse producten - voedselvoorziening - ketenmanagement - egypte - fresh products - food supply - supply chain management - egypt
    To investigate options for “Metropolitan food production systems” in Egypt and specifically in the Cairo region, a ‘cold chain quick scan’ is conducted by Wageningen UR post-harvest specialists. The study comprehends a quick scan for market demand, market willingness and a search for trend development affecting metropolitan agriculture. Candidate chain concepts are proposed and discussed.
    Integrated agri-aquaculture with brackish waters in Egypt : mission report (March 9 - March 17, 2014)
    Heijden, P.G.M. van der; Roest, C.W.J. ; Farrag, F. ; ElWageih, H. ; Sadek, S. ; Hartgers, E.M. ; Nysingh, S.L. - \ 2014
    Wageningen : Alterra, Wageningen-UR (Alterra-report 2526) - 55
    aquaculture - brackishwater aquaculture - agriculture - aquaculture systems - irrigation - egypt - aquacultuur - brakwateraquacultuur - landbouw - aquacultuursystemen - irrigatie - egypte
    Slaughterhouse Inspection (Egypt). Training Manual : Guidelines for the Planning and Organisation of Training Activities
    Blomne Sopov, M. ; Ghouti, C.A. ; Benlafquih, R. ; Vugt, F. van; Latief, A.M.A. - \ 2014
    Wageningen : Centre for Development Innovation, Wageningen UR - 53
    dierenwelzijn - diergezondheid - slacht - dierlijke productie - opleiding - egypte - slachthuizen - inspectie - animal welfare - animal health - slaughter - animal production - training - egypt - abattoirs - inspection
    The training manual was prepared for the inspectors of slaughterhouses in Egypt to support the training activities of the General Organization for Veterinary Services (GOVS). The manual has two main parts: 1. Overview on how to design, organize, implement and evaluate training programs in general 2. Recommendation on how to design and facilitate training programs for the inspectors of slaughterhouses. Report CDI-14-004.
    Egyptian greenhouse cultivation at a higher level with Dutch Technology ; Annual Report 2013
    Elings, A. ; Helm, F.P.M. van der; Blok, C. ; Meijer, R.J.M. ; Lahiani, Y. ; Janmaat, A. ; Zaki, M. ; Hassan, H. - \ 2014
    Wageningen UR Glastuinbouw (Rapporten 1297) - 48
    glastuinbouw - kastechniek - egypte - duurzaamheid (sustainability) - gewasbescherming - waterbeheer - landbouwkundig onderzoek - samenwerking - cultuurmethoden - greenhouse horticulture - greenhouse technology - egypt - sustainability - plant protection - water management - agricultural research - cooperation - cultural methods
    The project ‘Egyptian greenhouse cultivation at a higher level with Dutch technology’ is co-funded under the Top Sector Programme Horticulture and Starting Materials. The project wants to realizes through the use of Dutch technology a higher level of sustainability of Egyptian protected cultivation, especially in the areas of water and crop protection. Collaborating private partners are Koppert and HortiMaX in The Netherlands, and BioEgypt and AllGreen in Egypt. Wageningen UR Greenhouse Horticulture is the collaborating research partner. In the first year 2013, the project proposal was agreed upon, and after summer, water technology was demonstrated at the AllGreen farm. As this is only effective if crop cultivation in a general sense is improved as well, weekly skype meetings were organized between Wageningen UR and AllGreen. The political unrest caused delay in the process to suggest revision of current rules with regards to the import of biological control agents. It is envisaged that in 2014, when the political situation has become more quiet, the project will accelerate.Het project ‘Egyptische kasteelt op een hoger niveau met Nederlandse technologie’ wordt gecofinancierd door het Topsector programma ‘Tuinbouw en Uitgangsmaterialen’. Het project wil door middel van toepassing van Nederlandse technologie een hoger niveau van duurzaamheid in de Egyptische bedekte teelt realizeren, met name op de gebieden van water en gewasbescherming. Samenwerkende private partners zijn Koppert en HortiMaX in Nederland en BioEgypt and AllGreen in Egypte. Wageningen UR Glastuinbouw is de samenwerkende onderzoekspartner. In het eerste jaar,2013, werd overeenstemming bereikt over het projectvoorstel, en na de zomer werd atertechnologie bij AllGreen gedemonstreerd. Aangezien dit alleen effectief is als de gewasteelt in algemene zit wordt verbeterd, werden wekelijks skype vergaderingen georganiseerd tussen Wageningen UR en AllGreen. De politlieke onrust zorgde voor vertraging in het proces dat was gericht op het aanbieden van veranderingsvoorstellen met betrekking tot de import van biologische gewasbeschermingsmiddelen. Het wordt voorzien dat in 2014, als de politieke situatie meer tot rust is gekomen, het project versneld kan worden uitgevoerd.
    Supporting the Aquaculture industry in Egypt: Identification mission 30 March - 1 April 2014
    Rothuis, A.J. - \ 2014
    Yerseke : IMARES (Report / IMARES Wageningen UR C062/14) - 11
    aquacultuur - viskwekerijen - tilapia - rentabiliteit - egypte - aquaculture - fish farms - tilapia - profitability - egypt
    Egyptian fish farming has witnessed a spectacular development resulting in an industry that is number 7 worldwide and number two in tilapia production. As such the industry is an important contributor to Egypt’s economy as well as a major provider of cheap fish protein. However, there are a number of developments that potentially could result in a stagnation or even collapse of the industry. Some important issues are: • Low fish prices and increasing fish production costs resulting in eroding profitability of farms and thus no investment in technology development and innovation. • Lack of processing and freezing capacity which results in an inability to access new export markets • Low priority of government, lack of legislation and harmonisation of legislation, no operational extension service, weak professional organisations and weak linkage between research and industry • Rather traditional farming technology (tilapia) including use of low quality feeds and wild fry (marine aquaculture). The IMARES/Wageningen UR study1 illustrated that within the currently available land and water resources, Egypt can potentially increase its total tilapia production from 700,000 tonnes to 1,400,000 tonnes, resulting in an increase in the economic value of the sector to over 1% of the current GDP. In order to realize this potential, the first requirement is to increase the current farm profitability. When this is realized, capital will become available that allow farmers to invest into new production technologies, market innovations and new organisational structures, that will than result in more fish and new markets. Among the issues at stake are improvements in fish feed and on-farm feed management, breeding and genetics and export of fish to new international markets (Middle East and Europe).
    Wadi Fish : maricultuur in de Egyptische woestijn
    Heijden, P.G.M. van der; Sadek, S. ; Taher, S. - \ 2014
    Aquacultuur 2014 (2014)1. - ISSN 1382-2764 - p. 8 - 11.
    zeebaars - aquacultuur - viskwekerijen - recirculatie aquacultuur systemen - filters - zout water - egypte - sea bass - aquaculture - fish farms - recirculating aquaculture systems - filters - saline water - egypt
    Zeebaars kweken in de woestijn, op 80 km van de Middellandse Zee. Sinds 2009 gebeurt dit op een van de bedrijven van Wadi Food genaamd Rula for Land Reclamation, gelegen bij de plaats Wadi El Natroun in Egypte.Tijdens het slaan van putten voor de uitgestrekte olijvenplantage van Wadi Food leverde één bron geen zwak brak water zoals de andere, maar water met 26 gr zout/liter, een zoutgehalte dat in de buurt van dat van zeewater ligt. Van de nood een deugd makend werd een viskwekerij gebouwd; het zoute water wordt gebruikt voor de teelt van zeebrasem en zeebaars. Een korte bedrijfsreportage.
    Aquaculture business opportunities in Egypt
    Rothuis, A.J. ; Duijn, A.P. van; Roem, A.J. ; Ouwehand, A. ; Pijl, W. van der; Rurangwa, E. - \ 2013
    Wageningen : Wageningen UR (LEI report 2013-039) - 34
    aquacultuur - voedselproductie - voedselzekerheid - plattelandsontwikkeling - bedrijfseconomie - handelsrelaties - egypte - overheidsbeleid - nederland - aquaculture - food production - food security - rural development - business economics - trade relations - egypt - government policy - netherlands
    Egyptian fish farming has witnessed a spectacular development resulting in an industry that is number 7 worldwide and number 2 in tilapia production. As such the industry is an important contributor to Egypt's economy as well as a major provider of cheap fish protein. However there are a number of developments that potentially could result in a stagnation or even collapse of the industry.
    Greenhouse gas emission analysis of an Egyptian rice straw biomass-to-energy chain
    Poppens, R.P. ; Bakker, R. - \ 2012
    Wageningen : Wageningen UR - Food & Biobased Research - 15
    bio-energie - rijststro - biomassa - biomassa productie - bolletjes - egypte - export - broeikasgassen - emissie - biobased economy - bioenergy - rice straw - biomass - biomass production - pellets - egypt - exports - greenhouse gases - emission - biobased economy
    A common practice in Egypt has been the burning of rice straw, as a measure to prepare agricultural land for follow-up crops. This practice has caused significant greenhouse gas emissions, in addition to aerial pollution. By using straw residue for the production of pellets and shipping these pellets to Europe for co-firing in electricity plants, significant overall emission reductions could be achieved. This study was conducted in the framework of project “Technical and economic feasibility of environmentally safe rice straw disposal and utilization methods for Egypt”. Based on a potential business set-up with three pelletizers, divided over three rice producing regions in Egypt’s Nile Delta, greenhouse gas emissions were quantified for the principal operations in the biomass-to-energy chain. Also expected emission reductions were calculated, in comparison with the use of fossil fuels.
    Geïntegreerde visteelt in Egypte : ‘It’s complicated’
    Heijden, P.G.M. van der; Nasr Allah, A. ; Kenawy, D. - \ 2012
    Aquacultuur 2011 (2012)5. - ISSN 1382-2764 - p. 18 - 25.
    visteelt - aquacultuur - zoetwatervissen - irrigatiewater - landbouw - watergebruik - watergebruiksrendement - egypte - fish culture - aquaculture - freshwater fishes - irrigation water - agriculture - water use - water use efficiency - egypt
    Egypte is op het Afrikaanse continent het land met veruit de grootste visteeltproductie. Het grootste deel van de aquacultuurproductie bestaat uit zoetwatervissoorten. Dat deze groei kon plaatsvinden in een land waar zoetwater beperkt aanwezig is, kan opmerkelijk genoemd worden. Nog opmerkelijker wordt het als men zich realiseert dat deze groei plaatsvindt in een land waar het viskwekers verboden is van irrigatiewater gebruik te maken, tenzij het water voor een pootvisbedrijf bestemd is. Integratie van visteelt en landbouw kan tot efficiënter watergebruik leiden, en zou in een land waar zoetwater schaars is, aangemoedigd dienen te worden. Maar niet in Egypte. Dit artikel gaat over de wetten en regels die de toepassing van geïntegreerde visteelt belemmeren, en doet verslag van de resultaten van een studie die wat cijfers over het waterverbruik door geïntegreerde bedrijven boven tafel bracht.
    Evaluation of the use of fresh water by four Egyptian farms applying integrated aquaculture – agriculture
    Heijden, P.G.M. van der; Nasr-Alla, A. ; Kenawy, D. ; El-Naggar, G. ; Beveridge, M. - \ 2012
    Wageningen : Wageningen UR Centre for Development Innovation (Report / Wageningen UR Centre for Development Innovation CDI-12-005) - 38
    aquacultuur - landbouw - egypte - waterkwaliteit - aquaculture - agriculture - egypt - water quality
    This report describes a study done in 2010 by researchers of the WorldFish Center on water use in Egyptian farms that apply aquaculture – agriculture integration. Two of the four farms that were monitored derived the main income from farming and selling fish, the two other farms were mainly agricultural farms that used reservoirs that were built to store irrigation water for growing fish. The volume of water in which fish were raised from fingerling to market size and that was subsequently used to irrigate agriculture crops was estimated. The water quality was monitored, the quantity and value of the fish and the value of the agricultural crop were determined. Estimates were made of the amount of fertilizer that was saved by growing fish in irrigation water. Report number CDI-12-005.
    Review of tropical reservoirs and their fisheries : the cases of Lake Nasser, Lake Volta and Indo-Gangetic Basin reservoir
    Zwieten, P.A.M. van; Bene, C. ; Kolding, J. ; Brummett, R. ; Valbo-Jorgensen, J. - \ 2011
    Rome : Food and Agriculture Organization of the United Nations (FAO fisheries and aquaculture technical paper 557) - 148
    reservoirs - visserij - meren - tropen - india - egypte - ghana - fisheries - lakes - tropics - egypt
    Oplossingen voor landbouw in Noord-Afrika
    Froebrich, J. - \ 2011
    Kennis Online 8 (2011)augustus. - p. 11 - 11.
    landbouwontwikkeling - voedselzekerheid - integraal waterbeheer - duurzame ontwikkeling - egypte - maghreb - agricultural development - food security - integrated water management - sustainable development - egypt - maghreb
    In Egypte en de Maghreb-landen kijken onderzoekers van Alterra naar mogelijkheden voor landbouwontwikkeling, ondanks schaarste aan goed water en landbouwgrond. Mogelijk liggen er kansen voor het Nederlandse bedrijfsleven.
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