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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    Photosynthesis : Online introductory course
    Vreugdenhil, D. - \ 2017
    Wageningen : Wageningen University & Research
    photosynthesis - plants - plant physiology - biomass - fotosynthese - planten - plantenfysiologie - biomassa
    The aim of this online course is to explain the basic mechanisms of photosynthesis.
    Dossier Nieuwe technieken plantenveredeling
    Lotz, L.A.P. ; Wiel, C.C.M. van de - \ 2017
    Wageningen : Groen Kennisnet
    cultivation - greenhouse horticulture - vegetable growing - breeding methods - breeding programmes - fruit growing - arable farming - technical progress - innovations - circular agriculture
    In de plantenveredeling vindt op dit moment zeer snelle innovatie plaats. Een deel van deze innovatie is onderdeel van een maatschappelijk debat. Dit dossier bevat lesmateriaal om nieuwe wetenschappelijke kennis en inzichten door te laten stromen naar verschillende niveaus in het Groene onderwijs. Ultiem doel is jongeren zodanig van kennis te voorzien dat zij zelf een goed onderbouwde mening kunnen formuleren over kansen en risico’s van gebruik van nieuwe technieken in de veredeling, en daarmee ook een bijdrage kunnen leveren aan genoemd maatschappelijk debat.
    City farming alternatief voor telers op zoek naar verandering : Grote steden lopen warm voor indoor farming
    Vermeulen, Tycho - \ 2016
    organic farming - sustainable agriculture - urban agriculture - greenhouse horticulture - vegetable growing
    Bouwen van duurzame, biologische systemen vereist lef en energie
    Meijer, Rob - \ 2016
    greenhouse horticulture - organic farming - sustainable agriculture - agricultural research - vegetable growing - europe - cooperation
    Kansen voor regionale innovatieprojecten, verkenning voor de vollegrondsgroentesector in Zuidoost Nederland
    Haan, J.J. de; Verhoeven, J.T.W. ; Wolf, P.L. de - \ 2016
    Wageningen : Stichting DLO (PPO/PRI-rapport 3750302800 ) - 26
    akkerbouw - groenteteelt - groenten - kleine landbouwbedrijven - limburg - ondernemerschap - innovaties - kennisoverdracht - kennissystemen - kennis van boeren - kennis - subsidies - arable farming - vegetable growing - vegetables - small farms - limburg - entrepreneurship - innovations - knowledge transfer - knowledge systems - farmers' knowledge - knowledge - subsidies
    The Dutch province of Limburg has asked Wageningen UR to develop an initial knowledge- and innovation agenda for the outdoor vegetable production sector, including three concrete project ideas for the POP3 framework. Besides this, Wageningen UR was asked to evaluate three innovation projects with farmers and SMEs to make recommendations to optimise the POP3 framework. Recommendations for POP3 Based on experiences in three different subsidy projects, recommendations are formulated for POP3. The main conclusion is that subsidy schemes do not match with the situation of agricultural businesses and small SMEs, although the schemes aim to support such companies with innovation. It is recommended to leave the ownership of the innovation with the companies, but without the full project management responsibility. Moreover, it is important to make the conditions more suitable for small enterprises, e.g. the minimum subsidy sum and the required contribution in cash. Second problem is the inflexibility of subsidy schemes, limiting the dynamics of innovation projects or forcing them to start procedures for acceptance of changes in the plan and budgeting. It is recommended to make schemes more flexible, e.g. asking less detailed plans and creating more room for changes in partners, activities and budgets. Third problem is the limitation for consortium partners to get their full costs paid, affecting research and advisory partners. This is often solved through very complicated constructions (outsourcing, secondary partnership), causing inequalities in the project (some partners are fully paid, others are not). Recommendation: allow projects to involve the right partners for the project, with the possibility to pay real costs and without complicated constructions. Last common problem is the artificial distinction between knowledge development and knowledge use/uptake, causing problems within projects when necessary research activities are not accepted by the subsidy scheme. Recommendation: allow projects to do all activities they believe are necessary for the innovation process.
    Regenerating degraded soils and increasing water use efficiency on vegetable farms in Uruguay through ecological intensification
    Alliaume, F. - \ 2016
    Wageningen University. Promotor(en): Pablo Tittonell, co-promotor(en): Walter Rossing; Santiago Dogliotti. - Wageningen : Wageningen University - ISBN 9789462578487 - 163
    tillage - minimum tillage - mulches - vegetable growing - water use efficiency - degraded land - soil conservation - modeling - soil management - grondbewerking - minimale grondbewerking - mulches - groenteteelt - watergebruiksrendement - gedegradeerd land - bodembescherming - modelleren - bodembeheer

    This thesis investigated alternative soil management strategies for vegetable crop systems and their hypothesized effects on increasing systems resilience by sequestering soil carbon, increasing the efficiency of water use, and reducing erosion. The goal was to contribute knowledge on and tools for the integrated assessment of soil management strategies for the ecological intensification and small-scale production systems sustainability in South Uruguay.

    We performed a baseline assessment of key soil properties on cropped fields, and evaluated the impact of implementing different soil management strategies after re-design of systems in a co-innovation project. We showed evidence that even under smallholder conditions, it was possible to reverse the soil degradation. However, it was not possible to reduce erosion in cases that a pasture could not be included in the rotation. We evaluated reduced tillage and cover crop management in an experiment. In-situ grown mulching increased water capture by 9.5% and reduced runoff by 37% on average, leading to less erosion risk and greater plant available water. We also collected enough data to develop a simple, generally applicable, locally parameterizable mathematical model that accounts for the effect of soil cover on soil water dynamics. Exploration with 10 years of weather data showed that reduced tillage and mulching (RTmulch) would decrease water requirements for irrigation by 37% on average.

    Finally, we scaled up the results to study the impact of RTmulch on two small horticultural family farms with different resource availabilities. By combining process-based simulation models with empirical data and expert knowledge, we quantified inputs and outputs of production activities. Adoption of RTmulch was associated with improvements of the economic and/or environmental performances. It was possible to design production activities with erosion rates below the tolerable level without sacrificing the family income too much. Average water savings of 775 m3 ha-1 yr-1 (fully irrigated rotations) to 452 (irrigating only the most profitable vegetable crops) were obtained under RTmulch compared with conventional tillage.

    Reduced tillage and mulching have potential for increasing water infiltration, reducing runoff and erosion, and achieving greater efficiency of water use for vegetable crops grown in raised bed systems. These aspects are especially relevant under conditions of high rainfall variability, limited access to irrigation and high soil erosion risk. For future research, we suggest combining long-term experiments with on- farm research to capture the benefits of improving soil quality on soil productivity, while adjusting the technology to solve limitations that arise in the process. This study provides ground for testing the proposed changes on pilot farms, using a co-innovation approach combining scientific insights with farmers’ knowledge of their farms.

    Effect of adjuvant and spray volume on mancozeb residue on potato and onion leaves and on Phythophthora infestans in potato and Peronospora destructor in onion
    Putter, H. de; Schepers, H.T.A.M. ; Topper, C.G. ; Evenhuis, A. - \ 2016
    Wageningen : Wageningen UR (vegIMPACT Report 21) - 21
    arable farming - vegetable growing - outdoor cropping - potatoes - onions - laboratory tests - solanum tuberosum - allium cepa - plant protection - pesticides - akkerbouw - groenteteelt - vollegrondsteelt - aardappelen - uien - laboratoriumproeven - solanum tuberosum - allium cepa - gewasbescherming - pesticiden
    As part of the vegIMPACT project a laboratory test in the Netherlands was done with potato (Solanum tuberosum) var. Bintje and onion (Allium cepa) var. Sturon. In both crops mancozeb was sprayed with and without the adjuvants Bond and Indostick. In both crops these three treatments were applied with high and low spray volumes. After spraying, rain was simulated (0.5, 3 or 6 hours after spraying and a control without rain) to test the sticker properties. After five days, plant leaves were analysed on mancozeb residue. Five days after spraying the potato plants were inoculated with Phytophthora infestans and onions with Peronospora destructor. Subsequently, disease symptoms were observed and visually rated as percentage of infected leaves. In potato lower mancozeb residue levels were measured at high spray volumes. Under dry conditions the effect of adjuvant on mancozeb residue in potato was limited. In onion the spreader characteristics of the adjuvants resulted in higher mancozeb residue concentrations than without adjuvant. The impact of rain simulation was much bigger than the impact of adjuvant on mancozeb residue and late blight incidence. Therefore, it is not recommended to spray when rain is expected within the same day as spraying. With rain simulation in both onion and potato more mancozeb residue was present when using the adjuvant Bond than when spraying mancozeb without an adjuvant. However, also with Bond after rain simulation high amounts of mancozeb were washed off. Mancozeb with Bond in potato resulted in less late blight incidence than with spraying mancozeb without adjuvants. Overall the adjuvant Bond performed better than Indostick in terms of mancozeb retention on both potato and onion leaves . Indostick had good spreading properties that under dry conditions resulted in higher mancozeb residue levels in onion. Under rainy conditions the effect of Indostick on mancozeb residues was not or only slightly better than mancozeb without adjuvant.
    Resistentieveredeling - Verdedigingsmechanisme : Kennisclip Bogo-project e-learning
    Hop, M.E.C.M. - \ 2016
    Groen Kennisnet
    resistance breeding - susceptibility - resistance - tolerance - host pathogen interactions - plant protection - teaching materials - disease resistance - resistentieveredeling - vatbaarheid - weerstand - tolerantie - gastheer-pathogeen interacties - gewasbescherming - lesmaterialen - ziekteresistentie
    Deze kennisclip maakt onderdeel uit van de lesmodule Resistentie Veredeling van het CIV T&U.
    Minder blad in winter bij veel meer groente- én sierteeltgewassen mogelijk : Leo Oprel pleit voor denken vanuit de winter
    Kromwijk, Arca ; Gelder, Arie de - \ 2015
    horticulture - greenhouse horticulture - vegetable growing - ornamental horticulture - tomatoes - anthurium - leaf area - biomass - greenhouse experiments - assimilation - winter - energy saving

    Onderzoek met een relatief ‘kale’ tomatenplant gaf vorige winter verrassende resultaten: iets meer productie, iets minder gasverbruik. Dit jaar is een nieuwe proef ingezet. Maar waarom zo’n systeem alleen toepassen bij tomaat? Leo Oprel (Kas als Energiebron) ziet nog veel meer mogelijkheden, ook bij siergewassen. Hij gaat in discussie met de onderzoekers Arca Kromwijk en Arie de Gelder.

    Results of fertilizer demonstration trials in Pangalengan and Garut, Indonesia, May-August 2014
    Brink, L. van den; Gunadi, N. ; Wustman, R. ; Moekasan, T.K. ; Prabaningrum, L. ; Karjadi, A.K. ; Hengsdijk, H. - \ 2015
    Wageningen : Wageningen UR (vegIMPACT 16) - 22
    vegIMPACT - fertilizer application - indonesia - demonstration farms - vegetable growing - potatoes - crop yield - bemesting - indonesië - demonstratiebedrijven, landbouw - groenteteelt - aardappelen - gewasopbrengst
    Improved potato production by appliing organic manure to increase the yield on small farms in Indonesia.
    Verse groenten produceren in de woestijn
    Campen, J.B. - \ 2015
    Kas techniek 2015 (2015)oktober. - p. 16 - 18.
    tuinbouw - glastuinbouw - kastechniek - groenteteelt - midden-oosten - onderzoeksprojecten - voedselproductie - agrarische productiesystemen - teelt onder bescherming - waterbeschikbaarheid - klimaat - horticulture - greenhouse horticulture - greenhouse technology - vegetable growing - middle east - research projects - food production - agricultural production systems - protected cultivation - water availability - climate
    Voedselzekerheid en voedselveiligheid staan hoog op de agenda in het Midden-Oosten sinds de voedselcrisis in 2007-2008. Voedsel wordt voor een groot deel geïmporteerd uit omliggende landen, maar ook uit Nederland. Vooral in de zomermaanden zijn de prijzen van versproducten in deze landen hoog, omdat er dan weinig in de regio zelf wordt geproduceerd. Vanwege de hoge prijzen en de lage kwaliteit van producten uit omliggende landen zijn er verschillende programma’s gestart om het productiesysteem te verbeteren. Hierbij is ook veel aandacht voor waterbesparing, aangezien water een zeer schaars product is in een groot deel van deze regio.
    Uit Je Eigen Stad
    Heijden, P.G.M. van der - \ 2015
    Aquacultuur 2015 (2015)2. - ISSN 1382-2764 - p. 17 - 24.
    groenten - vis - bedrijven - voedselproductie - stadslandbouw - aquacultuur - visteelt - viskwekerijen - groenteteelt - aquaponics - innovaties - vegetables - fish - businesses - food production - urban agriculture - aquaculture - fish culture - fish farms - vegetable growing - aquaponics - innovations
    In 2010 vatte drie ondernemers het plan op om bij de Rotterdamse Fruithaven een loods en het erom heen gelegen rangeerterrein een landbouwkundige bestemming te geven. Het duurde tot 2012 voordat voldoende kapitaal en vergunningen waren geregeld en met de aanleg van Uit Je Eigen Stad begonnen kon worden. Inmiddels is er veel bereikt (waaronder een werkend aquaponics systeem met een inhoud van 125 m3) en worden groente, tilapia, Afrikaanse meerval, paddenstoelen en kippen in het eigen restaurant en in Rotterdam en omgeving verkocht. Maar de medewerkers van Uit Je Eigen Stad rusten niet en gaan door met het testen en proberen van verschillende gewassen, productiewijzen, producten, markten en evenementen. We bezochten het bedrijf en spraken met Ivo Haenen.
    Balans in bemesting : proefbedrijf Vredepeel onderzoekt de optimale bemstingsstrategie voor bioteelt
    Haan, J.J. de; Verstegen, H.A.G. - \ 2015
    Ekoland 35 (2015)10. - ISSN 0926-9142 - p. 20 - 22.
    biologische landbouw - bemesting - groenteteelt - vollegrondsteelt - preien - veldproeven - bedrijfssystemen - stikstofbalans - proefbedrijven - emissiereductie - groenbemesters - organic farming - fertilizer application - vegetable growing - outdoor cropping - leeks - field tests - farming systems - nitrogen balance - pilot farms - emission reduction - green manures
    Juiste bemesting is essentieel voor goede gewasopbrengsten, opbouw van bodemvruchtbaarheid en het voorkomen van emissies. Onderzoekers Janjo Haan en Harry Verstegen zochten op proefbedrijf Vredepeel naar de beste bemesting voor het biologische bedrijfssysteem. Bijbemesting in de prei en het goed inschatten van de mineralisatie en stikstofbenutting blijkt het lastigst.
    PermVeg: a generic tool to design and assess crop rotations for permanent vegetable production systems; User manual
    Wassink, B. ; Berg, W. van den; Putter, H. de; Hengsdijk, H. - \ 2015
    Wageningen : Wageningen UR (vegIMPACT report 9) - 10
    rotatie - groenteteelt - computersimulatie - simulatiemodellen - handbediening - vietnam - indonesië - rentabiliteit - arbeidskosten - pesticiden - handleidingen - rotation - vegetable growing - computer simulation - simulation models - manual operation - vietnam - indonesia - profitability - labour costs - pesticides - guide books
    This manual describes a generic tool to design and assess alternative vegetable rotations. The model combines vegetable crops to generate all possible crop rotations for a given period, based on a number of explicit criteria (objectives and restrictions) controlled by the user. The criteria eliminate in early stages those crop rotations that are undesirable. The criteria relate among others to the most important socio-economic and environmental factors in vegetable production, i.e. profitability, labor requirements and costs of pesticide use.
    De Nederlandse glastuinbouw moet leren zich beter te presenteren : Haak aan bij stadlandbouw en ga dialoog aan
    Arkesteijn, M. ; Vermeulen, T. - \ 2015
    Onder Glas 12 (2015)1. - p. 49 - 50.
    glastuinbouw - groenteteelt - kwekers - consumenten - informatiebehoeften - stadslandbouw - stedelijke gebieden - consumenteninformatie - kennisoverdracht - greenhouse horticulture - vegetable growing - growers - consumers - information needs - urban agriculture - urban areas - consumer information - knowledge transfer
    Stadslandbouw is ontstaan vanwege scepsis ten aanzien van de grootschalige voedselproductie. Tegelijkertijd neemt de aandacht voor voedsel toe. Het is een kans voor de Nederlandse glastuinbouw om te laten zien welke mooie en gezonde producten er worden geteeld in de achtertuin van de stad.
    Sixty-five data sets of profit, labour input, fertilizer and pesticide use in seventeen vegetable crops of the Arusha region, Tanzania
    Everaarts, A.P. ; Putter, H. de - \ 2015
    Lelystad : PPO AGV (PPO/PRI report 652) - 77
    groenteteelt - rentabiliteit - input van landbouwbedrijf - kosten - arbeid (werk) - inkomen - tanzania - investering - penen - voederkool - koolsoorten - tomaten - aardappelen - bemesting - gewasbescherming - vegetable growing - profitability - farm inputs - costs - labour - income - tanzania - investment - carrots - kale - cabbages - tomatoes - potatoes - fertilizer application - plant protection
    This report contains the 65 individual crop data sets to the related report A.P. Everaarts, H. de Putter and A.P. Maerere, 2015. Profitability, labour input, fertilizer application and crop protection in vegetable production in the Arusha region, Tanzania.PPO Report 653.
    Profitability, labour input, fertilizer application and crop protection in vegetable production in the Arusha region, Tanzania
    Everaarts, A.P. ; Putter, H. de; Maerere, A.P. - \ 2015
    Lelystad : PPO AGV (PPO/PRI report 653) - 37
    groenteteelt - rentabiliteit - input van landbouwbedrijf - kosten - arbeid (werk) - inkomen - tanzania - investering - penen - voederkool - koolsoorten - tomaten - aardappelen - bemesting - gewasbescherming - vegetable growing - profitability - farm inputs - costs - labour - income - tanzania - investment - carrots - kale - cabbages - tomatoes - potatoes - fertilizer application - plant protection
    An analysis was made of the inputs, costs and profit of vegetable production in three areas in the Arusha region of Tanzania. The major aim of the study was to establish whether vegetable producers would have the means to invest in modern production methods, such as hybrid seeds and drip irrigation, to improve and intensify their production.
    Veel innovatiekracht in onze regio
    Tramper, M. - \ 2015
    Akker magazine 11 (2015)8. - ISSN 1875-9688 - p. 36 - 39.
    toegepast onderzoek - proefbedrijven - proefboerderijen - rassenproeven - akkerbouw - zuid-holland - zware kleigronden - bedrijfsvoering - groenteteelt - innovaties - applied research - pilot farms - experimental farms - variety trials - arable farming - zuid-holland - clay soils - management - vegetable growing - innovations
    Praktijkonderzoekbedrijven zijn niet meer weg te denken uit de Nederlandse akkerbouw. Maar wat betekenen deze bedrijven voor de sector? Akker neemt een kijkje in de keuken van de proefboerderijen in Nederland. In dit nummer proefbedrijf Westmaas: een agrarisch onderzoekscentrum in een innovatieve regio. PPO Westmaas is onderdeel van Wageningen UR
    Verschillen in variatie in ruimte en tijd tussen de gangbare en biologische systemen in Bodemkwaliteit op zand / Waarde organische stof
    Haan, Janjo de - \ 2015
    arable farming - soil quality - sandy soils - outturn - nitrate leaching - organic fertilizers - vegetable growing - field crops - organic farming
    Manure, an important input in sustainable vegetable production, Manure use in field vegetable production in the Netherlands
    Haan, Janjo de - \ 2015
    arable farming - vegetable growing - field crops - fertilizer application - organic fertilizers - outturn - nitrate leaching - soil quality
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