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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Sorption of pymetrozine and dimethomorph to substrate materials
Boesten, J.J.T.I. ; Matser, A.M. - \ 2017
Wageningen : Wageningen Environmental Research (Wageningen Environmental Research report 2841) - 47
plant protection - pesticides - soilless culture - rockwool - sorption - gewasbescherming - pesticiden - cultuur zonder grond - steenwol - sorptie
Arable weeds and non-target plants in prospective risk assessment for plant protection products : Specific protection goal and exposure assessment goal options
Arts, Gertie ; Boesten, Jos ; Brock, Theo ; Roessink, Ivo - \ 2017
Wageningen : Wageningen Environmental Research (Wageningen Environmental Research report 2836) - 31
plant protection - herbicides - weed control - weeds - nontarget organisms - wild flowers - environmental impact - ecotoxicology - ecological risk assessment - gewasbescherming - herbiciden - onkruidbestrijding - onkruiden - niet-doelorganismen - wilde bloemen - milieueffect - ecotoxicologie - ecologische risicoschatting
Mobiele waterzuivering glastuinbouw
Ruijven, Jim van; Os, Erik van; Vermeulen, Peter - \ 2017
Bleiswijk : Wageningen University & Research, BU Glastuinbouw (Rapport GTB 1424) - 54 p.
kassen - glastuinbouw - afvalwaterbehandeling - afvalwater - waterverontreiniging - afvoer - zuiveren - waterzuivering - oppervlaktewater - oppervlaktewaterkwaliteit - gewasbescherming - pesticiden - substraten - cultuur zonder grond - mobiele uitrusting - greenhouses - greenhouse horticulture - waste water treatment - waste water - water pollution - discharge - purification - water treatment - surface water - surface water quality - plant protection - pesticides - substrates - soilless culture - mobile equipment
Application of a mobile unit for discharge water purification is one of four options to apply to the purification obligation per 1-1-2018. Depending on the amount of discharge, future water strategy and investment options, mobile purification can be an interesting option. The amount of discharge water varies with crop, irrigation strategy and quality of the irrigation water and is between 122 and 3.340 m3/ha/year for surveyed companies. About 65% of greenhouse companies discharges
Vervolgonderzoek emissiearme Lisianthus
Raaphorst, Marcel ; Eveleens, Barbara ; Burg, Rick van der; Schuddebeurs, Lisanne - \ 2017
Bleiswijk : Wageningen UR Glastuinbouw (Rapport GTB 1440) - 30
kasgewassen - kassen - glastuinbouw - snijbloemen - emissiereductie - voedingsstoffen - gewasbescherming - kooldioxide - substraten - cultuur zonder grond - fusarium - bodemschimmels - kunstmatige verlichting - kunstlicht - greenhouse crops - greenhouses - greenhouse horticulture - cut flowers - emission reduction - nutrients - plant protection - carbon dioxide - substrates - soilless culture - soil fungi - artificial lighting - artificial light
Lisianthus growers look for methods to minimise the emission of nutrients, crop protection chemicals and CO2. In 2014 and 2015, nine crops with Lisianthus have been tested at the Delphy Improvement Centre. This report describes the four trials that have been carried out in the extended research in 2016. With this extension, a distinction was made between different substrates and intensities of assimilation lighting. In addition to knowledge about light use efficiency, water use, heat use, substrate differences and growth development, these extra crop cycles have brought to light that growing Lisianthus on substrate gives a less resilient plant against soil fungi than was experienced during the first crop cycles.
Duurzame beheersing van phytophthora : Resistentiemanagement blijft noodzakelijk
Pacilly, F.C.A. - \ 2017
Ekoland (2017)5. - ISSN 0926-9142 - p. 22 - 23.
aardappelen - resistentie van variëteiten - gewasbescherming - phytophthora - akkerbouw - teelt - biologische landbouw - potatoes - varietal resistance - plant protection - arable farming - cultivation - organic farming
De Wageningse promovenda Francine Pacilly doet onderzoek naar phytophthorabeheersing. Ze ontwikkelt een computermodel waarmee je kan onderzoeken wat het effect is van bepaalde maatregelen. Afgelopen winter is het model getest met hulp van biologische en gangbare aardappeltelers. In dit artikel meer achtergronden over het model en de ervaringen uit de workshops met de telers.
Ontwikkeling teeltstrategie voor weerbare planten tegen bovengrondse ziekten
Hofland-Zijlstra, J.D. ; Breeuwsma, S. ; Noordam, M. - \ 2017
Bleiswijk : Wageningen University & Research, BU Glastuinbouw (Rapport GTB 1442) - 58
kasgewassen - glastuinbouw - geïntegreerde plagenbestrijding - gewasbescherming - schimmels - schimmelziekten - botrytis - schimmelelicitoren - elicitoren - greenhouse crops - greenhouse horticulture - integrated pest management - plant protection - fungi - fungal diseases - fungal elicitors - elicitors
Within a project Sustainable control strategies Wageningen University & Research Greenhouse Horticulture literature screening to develop an integrated pest management strategy to control airborne fungi. This project was funded by the former Dutch Horticultural Production Board and accompanied by the Dutch growers association, LTO Glaskracht Nederland. In 2016 two greenhouse trials were performed with pot tomato, Petunia and pot gerbera. Additionally, a greenhouse test was performed at a commercial greenhouse with pot gerbera. Goal was to test the side effects of synthetic elicitors which stimulate systemic acquired resistance against biotrophic fungi on disease resistance against nectrotrophic fungi like Botrytis. A commercially available synthetic elicitor, Fado (Nufarm) was able to reduce the Botrytis infection in pot tomato and in flowers of pot gerbera. Effectivity was supported by a combined treatment with Jiffy mineral (soil addition) and Serenade. Two experimental products of BASF and Nufarm were effective in reducing Botrytis in pot gerbera. Botrytis infection was not only related to light and relative humidity, but was also correlated with nutrients and chlorophyll content. Based on this knowledge, prediction models for Botrytis can be improved.
Nieuwe methoden in plantversterking tegen ondergrondse ziekten en plagen : gebruik van lokaal aanwezige antagonisten uit groeisubstraat en plant
Wurff, Andre van der; Streminska, M.A. ; Boer, F.A. de; Bruyant, Ewen ; Cuesta Arenas, Y. - \ 2016
Bleiswijk : Wageningen University & Research, BU Glastuinbouw (Rapport GTB 1427) - 42
kasgewassen - kassen - glastuinbouw - gewasbescherming - plantenziekteverwekkers - antagonisten - bacteriën - verdediging - verdedigingsmechanismen - endofyten - pythium ultimum - meloidogyne - rhizobium rhizogenes - fusarium oxysporum - fusarium - micro-organismen - proteïnaseremmers - bèta-glucanase - chitinase - greenhouse crops - greenhouses - greenhouse horticulture - plant protection - plant pathogens - antagonists - bacteria - defence - defence mechanisms - endophytes - microorganisms - proteinase inhibitors - beta-glucanase
Within this project, two new methods of the control of pathogens were investigated. New methods are: a. use of local bacteria that are isolated from soils or growing substrates; and b. bacteria that are present within the plant. By using local antagonists, already present in growing substrates or within plants in the greenhouse, the chance is higher that antagonist can be successfully used against local pathogens. Bacteria that were isolated from soil of growers were assessed on their antagonistic potential in lab trials against Pythium ultimum, Meloidogyne spp. and Rhizobium rhizogenes and Fusarium solani and F. oxysporum. Finally, the effect of antagonists against Pythium and Meloidogyne was evaluated in pot trials in the greenhouse. All antagonists diminished brown colourization symptoms in stems caused by Pythium. Alcaligenues sp., Bacillus sp. en two unidentified species diminished root damage and Alcaligenues sp. as well as Bacillus also reduced also the number of offspring of Meloidogyne spp. within the roots. The use of local microorganisms offers a sustainable-, new solution to control pathogens. In this study, it was shown that Proteinase inhibitor 2 (PINII), Glucanase (LeGluB) and Chitinase (LeChi3) can be used in tomato to investigate the influence of antagonists or endophytes on the plant defence.
Praktijkimplementatie zuiveringstechnieken
Ruijven, J. van; Os, E. van; Beerling, E. ; Staaij, M. van der - \ 2016
Bleiswijk : Wageningen UR Glastuinbouw (Rapport GTB 1419) - 42
kasgewassen - kassen - glastuinbouw - afvoer - zuiveren - gewasbescherming - ozon - greenhouse crops - greenhouses - greenhouse horticulture - discharge - purification - plant protection - ozone
To apply to the Dutch generic obligation to purify discharge water, each horticultural company needs to treat it’s discharge water with a technology that removes 95% of plant protection products. This report shows the process that growers need to go through to make a good choice for a purification technology: mapping of water flows, decrease the amount of discharge water, determine the strategy to apply to the generic obligation and make a choice for a purification technology. For a cucumber production company and a company that combines vegetable plant propagation and growth of potted plants this process is followed. A design for a purification system is developed and built for a semi-practice scale cucumber and sweet pepper production system. In the semi-practice scale and the cucumber production company, an ozone installation (Agrozone) is chosen, either to disinfect drain water and eventually purify discharge water. At the propagation company, an Opticlear Diamond (WaterIQ) is chosen to disinfect the drain water and eventually purify discharge water. For both installations the purification efficacy is measured. In the second part of the project the practical format for the generic obligation for discharge water purification is elaborated.
Grasklaverteelt motor voor samenwerking en klimaatadaptatie : 'climatecafe' evalueert samenwerking akkerbouw- en veeteeltbedrijven
Wit, Jan de; Adelhart Toorop, R.L. de - \ 2016
Ekoland (2016)12. - ISSN 0926-9142 - p. 20 - 21.
klimaatadaptatie - klimaatverandering - samenwerking - grasklaver - teelt - biologische landbouw - gewassen - gewasbescherming - akkerbouw - veehouderij - climate adaptation - climatic change - cooperation - grass-clover swards - cultivation - organic farming - crops - plant protection - arable farming - livestock farming
Het wordt natter en warmer in Nederland voorspelt het KNMI. Is de biologische boer bezig met deze verandering? Dat valt wel mee. Er wordt gewerkt aan een goede bodemkwaliteit en structuur. Dat draagt bij aan het aanpassingsvermogen aan een veranderend klimaat (‘adaptatie’). Grasklaver als rustgewas helpt de akkerbouwer daarbij, zo blijkt ook uit modelberekeningen.
Fusarium is toenemend probleem in teelt van amaryllis : drie ziekteverwekkers en doorelkaar lopende symptomen
Kromwijk, Arca - \ 2016
fusarium - plant diseases - plant disease control - plant pathogens - plant protection - greenhouse horticulture - amaryllis - biological control
Van chemie naar ecologie: niet straks maar nu!
Vet, Emely de - \ 2016
plant protection - pesticides - biological control - golf - agriculture - agri-environment schemes - ecosystems - biodiversity
'Van chemie naar ecologie. Niet straks maar nú!'
Vet, Emely de - \ 2016
golf - pesticides - agri-environment schemes - biological control - agriculture - plant protection - sports grounds - golf green soils - ecosystems - biodiversity - golf courses
Youtube registratie van de presentatie 'Van chemie naar ecologie. Niet straks maar nú!'
Biologische bestrijding trips snijbloemen een stap dichterbij : Roofmijten bijvoeren met stuifmeel helpt bij totaalaanpak trips
Messelink, Gerben ; Leman, Ada - \ 2016
predatory mites - plant protection - biological control - cut flowers - greenhouse horticulture - pollen - pest control - integrated pest management
Onderzoek Waterkringloopsluiting Tulpenbroeierij : overzicht huidige en toekomstige technieken om waterkringloopsluiting mogelijk te maken
Os, E.A. van; Feenstra, L. ; Ruijven, J. van; Stijger, C.C.M.M. ; Koeman-Stein, N. ; Appelman, W. - \ 2016
Bleiswijk : Wageningen UR Glastuinbouw (Rapport GTB 1394) - 38
tulpen - forceren van planten - glastuinbouw - kasgewassen - afvalwaterbehandeling - afvalwater - recirculatiesystemen - drainagewater - pathogenen - pathogeen eliminatie - gewasbescherming - voedingsstoffen - fenolen - tulips - forcing - greenhouse horticulture - greenhouse crops - waste water treatment - waste water - recirculating systems - drainage water - pathogens - pathogen elimination - plant protection - nutrients - phenols
Closing of the water cycle is required in the forcing of tulips. For growers it is important to know if and how they can eliminate pathogens at an adequate way and which equipment is most suitable to break down plant protection products from waste water. Now participating growers have various equipment for full or partly disinfection. It is recommended to start with good pre-filtration methods to eliminate pathogens which can be fully achieved with UV and ozone, while products such as hydrogen peroxide with additives or chlorite products can be used for an after-effect in the pipe work. Phenolic compounds, released by the roots, can be eliminated with oxidising methods. However efficacy has not been investigated. Purification of discharge water, before entering the waste ditch, will be obliged. New, certified, equipment will come on the market soon. Reuse of discharge water, after pre-fi ltration and disinfection, is also an option.
Gebruik van groene middelen : Inventarisatie laanboomkwekerij
Sluis, B.J. van der; Kuik, A.J. van; Baltissen, A.H.M.C. - \ 2016
Wageningen : Wageningen Plant Research, Bloembollen, Boomkwekerij & Fruit - 22 p.
bos- en haagplantsoen - straatbomen - aantrekkelijke bomen - gelderland - gewasbescherming - geïntegreerde plagenbestrijding - biologische bestrijding - natuurlijke producten - bladvoeding - natuurlijke vijanden - organismen ingezet bij biologische bestrijding - woody nursery stock - street trees - amenity trees - plant protection - integrated pest management - biological control - natural products - foliar nutrition - natural enemies - biological control agents
In de laanboomteelt in de regio Opheusden wordt al jarenlang gewerkt aan verduurzaming van de teeltmethoden. Het verantwoord toepassen van gewasbeschermingsmiddelen is daarvan een belangrijk onderdeel. Door strengere regelgeving wordt het chemische middelenpakket steeds verder beperkt en komen boomkwekers in toenemende mate voor knelpunten te staan. Uit oriënterende gesprekken in de regio blijkt dat een deel van de boomkwekerijbedrijven zich inmiddels toelegt op het gebruik van groene middelen om zo de afhankelijkheid van chemische middelen te verkleinen. Volgens de definitie van het Ctgb zijn dit gewasbeschermingsmiddelen van natuurlijke oorsprong (planten, dieren, microorganismen) met een laag risico voor mens, dier, milieu en niet-doelorganismen. In dit project wordt geïnventariseerd wat de mate van gebruik is van groene middelen door laanboomkwekers in de regio Rivierenland én wat hun ervaringen zijn met deze middelen. De uitkomst kan de sector in de regio benutten om de kennisuitwisseling voor duurzaam telen te bevorderen, zowel tussen kwekers als naar de burgers.
Advieskaart saprotrofe schimmels
Hofland-Zijlstra, J.D. ; Boon, H. ; Berg, A. van den; Vermunt, A. - \ 2016
LTO Glaskracht Nederland - 4 p.
saprofyten - schimmels - gewasbescherming - plantgezondheid - saprophytes - fungi - plant protection - plant health
Door toenemende druk op de toepassing van veen vervangende producten in het substraat en afnemend
gebruik van breed werkende fungiciden worden meer risico’s verwacht met overmatig groeiende saprotrofe
schimmels. Deze schimmels zijn niet direct schadelijk voor het gewas, maar wel voor de productie. In deze
advieskaart staan de herkenning van de schimmels, het voorkomen van besmetting en de bijbehorende
maatregelen centraal.
Push-pull strategie kan helpen bij bestrijden kieskeurige rouwmuggen
Kruidhof, Marjolein ; Vijverberg, Ruben - \ 2016
plant protection - pest control - animal behaviour - insect attractants - experimental design - culicidae - greenhouse horticulture
Evaluatie zuiveringstechniek voor verwijdering gewasbeschermingsmiddelen III
Ruijven, J.P.M. van; Beerling, E.A.M. ; Staaij, M. van der; Os, E.A. van - \ 2016
Bleiswijk : Wageningen UR Glastuinbouw (Rapport GTB 1414) - 30
afvalwaterbehandeling - waterzuivering - afvalwater - waterverontreiniging - glastuinbouw - kassen - cultuur zonder grond - gewasbescherming - pesticiden - ozon - verwijdering - filtratie - technieken - waste water treatment - water treatment - waste water - water pollution - greenhouse horticulture - greenhouses - soilless culture - plant protection - pesticides - ozone - removal - filtration - techniques
Dutch greenhouse horticulture has to treat all discharged water from soilless cultivations for the removal of plant protection products, to meet the new Dutch Directive Hoofdlijnenakkoord (2015). Building on previous research, (1) the life span of activated carbon filters, (2) the effect of increasing concentrations of plant protection products on the removal efficacy of ozone and the removal efficacy of (3) multimedia filtration and (4) ultrasonic water treatment have been investigated. It turned out to be difficult to design an active carbon based water treatment system capable of durable treatment of greenhouse discharge water: organic and mineral material in the water blocked the pores, thereby clogging the filter system and causing leakage by pressure build-up. Activated carbon filtration (granular activated carbon, 48 min contact time, 50 μm prefiltration with sand filter) achieved a removal efficacy of >95% for up to 430 bed volumes treated. Combination with advanced oxidation improved the removal efficacy, but the removal time of the filter could not be determined due to leakage. The removal efficacy of ozone oxidation remained >98%, even at increased concentrations (factor 10 and 100) of plant protection products in the untreated water. The multimedia filter removed 75% of the plant protection products by adsorption, biological breakdown within the filter was not determined. Treatment of the water with ultrasonic waves hardly had any effect (maximum 30% efficacy) on the breakdown.
Hoe wetenschap kan bijdragen aan duurzaam turfgrass management
Regensburg, Taco - \ 2016
plant protection - golf courses - weed control - biological control - agricultural research - pest control - plant disease control
Geïntegreerde beheersing ziekten en plagen in robuuste teeltsystemen : 'Systeemsprongen' geven richting aan onderzoeksagenda
Salm, Caroline van der - \ 2016
horticulture - greenhouse horticulture - agricultural research - integrated control - plant protection - cropping systems - plant breeding - crop monitoring - marketing - workshops (programs)

De glastuinbouw wil nagenoeg emissie- en residuvrij produceren en minder afhankelijk worden van chemische gewasbescherming. Caroline van de Salm van Wageningen UR Glastuinbouw is projectleider van deze PPS.

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