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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    Autonomous Greenhouse Challenge, First Edition (2018)
    Hemming, S. ; Zwart, H.F. de; Elings, A. ; Righini, I. ; Petropoulou, Anna - \ 2019
    Wageningen University & Research
    climate set points - crop management - cucumber - greenhouse climate - harvest - irrigation - outside weather - pruning - resource consumption
    The dataset contains data on greenhouse climate, irrigation, outside weather, greenhouse climate set points, harvest and crop management, resource consumption. Data were collected during a 4-month cucumber production (cv. Hi Power) in 6 glasshouse compartments (96 m2), located in Bleiswijk (The Netherlands). The dataset contains raw and processed data. Raw data were collected via climate measuring boxes, climate and irrigation process computer, manual registrations, outside weather station. The dataset was produced during the first edition of Autonomous Greenhouse Challenge, an international competition aiming at using Artificial Intelligence algorithms for the remote control of greenhouse horticulture production. Five international teams consisting of scientists, professionals and students participated in this experiment. The teams' names are: iGrow, deep_greens, AiCU, Sonoma, Croperators. They developed AI algorithms to remotely determine the Climate control set points and they additionally sent instructions for the crop pruning strategy. They had to realize the highest yield with minimal use of resources (e.g. water, CO2). The achievements in AI-controlled compartments were compared with a reference compartment, operated manually by three Dutch commercial growers (named Reference).
    A comprehensive assessment of agriculture in lowlands of south Brazil: characterization and comparison of current and alternative concepts
    Theisen, Giovani - \ 2017
    Wageningen University. Promotor(en): N.P.R. Anten, co-promotor(en): L. Bastiaans. - Wageningen : Wageningen University - ISBN 9789463436380 - 234
    cropping systems - farming systems - crop management - lowland areas - wetlands - pampas - brazil - intensification - sustainability - productivity - indicators - soil management - rice - flooded rice - oryza sativa - maize - zea mays - glycine max - cover crops - livestock - rotation - mixed farming - seedbed preparation - farm machinery - teeltsystemen - bedrijfssystemen - gewasteelt - laaglandgebieden - wetlands - pampa's - brazilië - intensivering - duurzaamheid (sustainability) - productiviteit - indicatoren - bodembeheer - rijst - natte rijst - oryza sativa - maïs - zea mays - glycine max - dekgewassen - vee - rotatie - gemengde landbouw - zaaibedbereiding - landbouwwerktuigen

    Agriculture in the lowlands of south Brazil is of strategic importance at the national level, since it supplies around 80% of the rice consumed by the Brazilian population. In Rio Grande do Sul, the southernmost state in Brazil, three million hectares of lowlands are ready for grain-based agriculture. Of this area, about half is fallow, partly used for cattle grazing, and irrigated rice is the predominant crop, cultivated annually on 1.1 million ha. The remaining area is used for soybean and other crops. The predominant cropping system is a combination of irrigated rice and cattle. Over the last decades, rice yields have steadily increased, but this rise in yield level has to a large extent been obtained at the expense of a continuously higher use of external inputs. The recent introduction of soybean in rotation with rice has partially improved the system, but in most areas the situation is becoming incompatible with the modern demands for sustainability. This thesis presents a long-term study (2006-2015) of five cropping systems for lowlands. Next to monocrop rice and two rice-soybean rotations conducted in either conventional or minimum tillage, the experiment contained two novel systems based on large ridges, on which soybean and maize were combined with either cover crops or crop-livestock integration in winter. In these last systems, 8-m-wide ridges were built to avoid flooding, thus allowing for diversification of cash crops and the cultivation of cover crops or pastures in winter time, as well as the use of no-tillage. All systems were evaluated at process-level, including soil preparation, seeding, plant nutrition, pest management, irrigation, harvesting, transport and cattle management, as well as regarding their performance for the different dimensions of sustainability, particularly environment, land productivity, economics, energy-use and labour. Next to system assessment, two additional experiments were conducted for the evaluation of two specific technologies for soil management in these areas. Crop livestock integration on the ridge-based system offered the best balance between food production, environmental impact and economics. This system is well suited to be used in fields that are kept fallow, thereby enlarging the agricultural productivity of the lowlands. The additional experiments revealed that a knife-roller can successfully substitute plough-and-harrow for soil preparation after rice harvest, and that germination of weed seeds can be reduced if crop seeding is conducted at a lower speed or using a no-tillage seeder equipped with an improved cutting mechanism. Overall the results show that by using alternative cropping systems that allow for diversification and new methods of field management it is possible to simultaneously attain a larger agricultural production and improved sustainability in the lowlands.

    Het Nieuwe Gewas : sturen van de plantvorm voor verhoogde lichtbenutting
    Gelder, Arie de; Janse, Jan ; Warmenhoven, Mary - \ 2016
    Bleiswijk : Wageningen UR Glastuinbouw (Rapport GTB 1407) - 62
    tomaten - solanum lycopersicum - kasgewassen - glasgroenten - glastuinbouw - energiebesparing - plantenontwikkeling - gewasteelt - licht - tomatoes - solanum lycopersicum - greenhouse crops - greenhouse vegetables - greenhouse horticulture - energy saving - plant development - crop management - light
    Wageningen UR Greenhouse horticulture searched in the “The New Crop” project for the crop structure that best contributes to the goal of energy-efficient production and therefore energy saving, by removing 33, 44 or 55% of the leaves at a young stage. On October 10th 2014 the experiment started with topped plants of the tomato variety Brioso grafted on Maxifort. Dry matter production was lowest in the very open crop, however partitioning to the fruits was highest in that treatment. Therefore, this crop produced in the winter under assimilation lighting most. In summer, the standard treatment was the best and the production in this treatment was highest. The plants in the very open treatment were shorter and had smaller leaves than the plants of the standard treatment. This is might be due to a different red: far red ratio of light in the crop. Leaf picking at a young stage contributes to better distribution of assimilates to the fruits. This can be used as a crop management measure as the plant in winter develops too much leaves. The project was funded by the Dutch energy transition program “Kas als Energiebron”.
    Agricultural intensification in Nepal, with particular reference to systems of rice intensification
    Uprety, Rajendra - \ 2016
    Wageningen University. Promotor(en): Thomas Kuijper, co-promotor(en): Harro Maat. - Wageningen : Wageningen University - ISBN 9789462579651 - 190
    rice - oryza sativa - nepal - asia - south asia - intensification - livelihoods - livelihood strategies - farming systems - farming - crop management - fertilizers - nutrients - irrigation - varieties - rijst - oryza sativa - nepal - azië - zuid-azië - intensivering - middelen van bestaan - strategieën voor levensonderhoud - bedrijfssystemen - landbouw bedrijven - gewasteelt - kunstmeststoffen - voedingsstoffen - irrigatie - rassen (planten)

    This thesis deals with agricultural intensification in Nepal. The initial focus of the study was the System of Rice Intensification (SRI), as introduced in Nepal from 2001. The multiple factors affecting SRI adoption, modification and dissemination together with the option to apply SRI in different combinations of its components result in a variety of SRI applications. For the same reason the effect of SRI on overall agricultural and livelihood development of Nepalese farmers has to be evaluated within the variety of farming systems in which it is applied.

    Despite government policies to promote rice cultivation, national rice production is declining. Farmer livelihood strategies, as reflected in rice farming systems, and field management strategies were influenced by several agro-ecological and socio-economic factors. Livelihood and field management strategies of rice farmers are interconnected. In the study presented here four livelihood strategies and three kinds of field management strategies are distinguished. Two livelihood strategies can be characterized as more intensive and more productive; the other two are less intensive and less productive. Livelihood strategies are more family resource-based strategies, while farmers’ field management strategies are more context-dependent. Field management strategies were characterized by forms of nutrient management. Intensive management strategies had most similarities with SRI. But rice intensification is not achievable as a general strategy.

    Government policies (fertiliser subsidies) encourage increased fertiliser use. Study results didn't show any significant effect of volume of fertilisers on rice yield but the combined use of organic manure and mineral fertilisers resulted in the highest average rice yields. Irrigation management is another important factor for rice production. Field management is influenced by the reliability of water which was better in farmers' managed irrigation system. Choice of rice varieties influenced the overall rice farming system and cropping intensity and preference of varieties for rice cultivation by scientists and by farmers were different in eastern Nepal. Most popular varieties were those not recommended by science and policy and were disseminated farmer to farmer.

    The introduction of SRI in Morang district resulted in several changes in rice farming, but only part of the farmers have adopted such technologies, and adoption has been only in part of their fields. Other farmers have incorporated some SRI practices in their conventional practices. After the introduction of SRI, farmers further tested, re-packaged or hybridized SRI methods to make SRI ideas suitable for their agro-ecological and socio-economic environments. In order to reform Nepalese rice farming, we need to recognize that different farmers, with different livelihood strategies, and with access to different kinds of fields, need different forms for agricultural intensification. High-intensive farmers prefer to use modified SRI methods where there is good irrigation and drainage facilities. There are many possibilities for improvement of the existing nutrient management practices of rice farmers in Nepal. Nutrient management will be useful to increase rice production because the majority of farmers currently use fertilisers non-judiciously. The SRI-recommended practices (younger seedlings, early weeding, use of organic manure, and alternate wetting and drying (AWD) irrigation) will be useful to improve the nutrient use efficiency of rice farmers. Cost-reduction strategies and less labour-intensive cultivation practices will be appropriate options to improve existing rice farming system of Nepal. Participatory cultivar selection and dissemination will be better strategies to introduce new, promising rice cultivars among rice farmers.

    Voedselveiligheid bij luchthavens : rapportage van gewasmetingen spinazie en boerenkool bij de luchthavens van Lelystad en Bremen
    Simons, H.A.E. ; Dijk, C.J. van; Leeuwen, S.P.J. van - \ 2015
    Nieuwegein : LBP/Sight - 35
    luchthavens - gewasanalyse - gewaskwaliteit - gewasteelt - gewasmonitoring - monitoring - voedselveiligheid - voedselkwaliteit - spinazie - boerenkool - airports - plant analysis - crop quality - crop management - crop monitoring - monitoring - food safety - food quality - spinach - curley kales
    In de Kabinetsreactie op het door de Alderstafel uitgebrachte advies omtrent de ontwikkeling van de luchthaven Lelystad, heeft het kabinet het advies overgenomen om Lelystad gecontroleerd te ontwikkelen naar een luchthaven met circa 45.000 vliegtuigbewegingen per jaar. Voor de uitwerking van het advies is door de Alderstafel Lelystad een werkprogramma opgesteld. In dit werkprogramma is opgenomen dat er een monitoringsprogramma wordt uitgewerkt om de effecten van de uitbreiding van de luchthaven op de duurzame landbouw te beoordelen. Dit monitoringsprogramma is in overleg met de betrokken partijen opgesteld en is in uitvoering. Onderdeel van het programma zijn gewasmetingen bestaande uit een nulmeting bij Lelystad en een referentiemeting bij Bremen (de luchthaven van Bremen komt qua aantal vliegbewegingen overeen met de toekomstige omvang van Lelystad). De onderzoeksopdracht behorende bij deze gewasmetingen is het beantwoorden van de volgende twee hoofdvragen. 1) Heeft een luchthaven als Lelystad een onderscheidenlijke invloed op de kwaliteit van de gewassen die in de omgeving geteeld worden? 2) Heeft de ontwikkeling naar circa 45.000 vliegtuigbewegingen per jaar een mogelijk onder-scheidenlijk effect op de kwaliteit van de gewassen die in de omgeving geteeld worden?
    Bijen en hommels, naast bestuivers ook nuttig bij gewasbescherming : nuttige ‘snuffelpaal’ door meenemen bacteriën en schimmels
    Arkesteijn, M. ; Steen, J.J.M. van der - \ 2015
    Onder Glas 12 (2015)8. - p. 48 - 49.
    glastuinbouw - apidae - bestuivers (dieren) - gewasteelt - plantgezondheid - gewasbescherming - antagonisten - nuttige insecten - belichting - bloei - landbouwkundig onderzoek - teeltsystemen - greenhouse horticulture - apidae - pollinators - crop management - plant health - plant protection - antagonists - beneficial insects - illumination - flowering - agricultural research - cropping systems
    Bijen en hommels zijn door hun bouw en gedrag goede bestuivers. Maar ze kunnen meer. Ze zijn ook heel geschikt om antagonistische micro-organismen voor ziektebestrijding over te brengen én informatie vanuit het veld over ziekten mee terug te nemen. Belangrijk voor al deze taken is: hoe houden we ze actief onder de ‘nieuwe’ teeltomstandigheden in de kas?
    Aandachtspunten voor een betere ruwvoerteelt
    Verloop, J. ; Oenema, J. - \ 2015
    V-focus 12 (2015)3. - ISSN 1574-1575 - p. 38 - 39.
    melkveehouderij - voedergewassen - gewasteelt - ruwvoer (forage) - graskuilvoer - maïskuilvoer - bemesting - dairy farming - fodder crops - crop management - forage - grass silage - maize silage - fertilizer application
    Koeien & Kansen-deelnemers besteden in ‘Productieslag’ extra aandacht aan de teelt van gras en mais om een maximale productie te realiseren met de beschikbare meststoffen. Op elk bedrijf zoeken veehouders, samen met hun adviseurs en onderzoekers, naar punten waar verbeteringen mogelijk zijn.
    Hoe meer diversiteit hoe beter? : onderzoek naar de effecten van biodiversiteit lijken veelbelovend: wordt vervolgd
    Apeldoorn, D.F. van; Rossing, W.A.H. ; Oomen, G.J.M. - \ 2015
    Ekoland (2015)februari. - ISSN 0926-9142 - p. 26 - 27.
    agrobiodiversiteit - teeltsystemen - gewasteelt - gemengde teelt - strokenteelt - veldgewassen - natuurlijke vijanden - agro-biodiversity - cropping systems - crop management - mixed cropping - strip cropping - field crops - natural enemies
    Ecologen zijn het er over eens, diversiteit draagt bij aan de stabiliteit van ecosystemen. En met dit inzicht wordt er nu ook binnen de landbouw volop geëxperimenteerd. Maar waar ligt de grens?
    Het Nieuwe Doen in Plantgezondheid
    Kogel, W.J. de; Verberkt, H. - \ 2014
    Gewasbescherming 45 (2014)5. - ISSN 0166-6495 - p. 154 - 156.
    gewasteelt - plantgezondheid - teeltsystemen - effecten - duurzaamheidscriteria - gewasbescherming - innovaties - duurzame ontwikkeling - strategisch management - crop management - plant health - cropping systems - effects - sustainability criteria - plant protection - innovations - sustainable development - strategic management
    Door gewassen nog beter weerbaar te maken tegen ziekten en plagen, kan de sector duurzamer produceren. Dit PPS-programma, binnen de Topsector Tuinbouw & Uitgangsmaterialen, richt zich op het verbeteren van de plantgezondheid, zowel op het niveau van de plant, het gewas, het bedrijf als op het niveau van de keten. De PPS wil tot robuuste weerbare systemen komen die zoveel mogelijk uitgaan van natuurlijk evenwicht, minimale externe inputs nodig hebben en minimale ongewenste outputs hebben. In zulke systemen zijn de kringlopen optimaal en wordt het zelfregulerend vermogen van het systeem goed benut. Tegelijkertijd blijven de productie en het bedrijfseconomische rendement op peil.
    Eten als de Inca's : Quinoa verovert de wereld
    Smit, A. ; Timmer, R.D. ; Loo, E.N. van; Minor, M. - \ 2014
    WageningenWorld (2014)3. - ISSN 2210-7908 - p. 34 - 39.
    akkerbouw - chenopodium quinoa - voedselgewassen - plantenveredeling - gewasteelt - rassen (planten) - landbouwkundig onderzoek - voedselproductie - nederland - arable farming - chenopodium quinoa - food crops - plant breeding - crop management - varieties - agricultural research - food production - netherlands
    Quinoa is immens populair. Dit van oorsprong Zuid-Amerikaanse voedselgewas is wereldwijd aan een opmars bezig. Mede dankzij Wageningse veredelaars is er nu ook quinoa uit Frankrijk, Engeland en Duitsland. En binnenkort misschien ook uit Nederland. ‘Dit wordt een beslissend jaar.’
    Teler moet goede reden hebben om sensoren aan te schaffen (interview met Arie de Gelder en Anja Dieleman)
    Arkesteijn, M. ; Gelder, A. de; Dieleman, J.A. - \ 2014
    Onder Glas 11 (2014)2. - p. 42 - 43.
    glastuinbouw - cultuurmethoden - gewasteelt - monitoring - gegevens verzamelen - sensors - besluitvorming - nuttig gebruik - greenhouse horticulture - cultural methods - crop management - monitoring - data collection - sensors - decision making - utilization
    Monitoring is in. Of het nu gaat om eenvoudige metingen, zoals de planttemperatuur of complexe processen als fotosynthese of verdamping. Monitoring zonder doel heeft geen zin. De eerste vraag die een teler zich volgens plantenfysiologen Anja Dieleman en Arie de Gelder moet stellen, is wat ga je ermee doen? Voorkom dat sensoren in de waan van de dag worden aangeschaft en vervolgens ongebruikt op zolder blijven liggen.
    Teelt de grond uit (workshop)
    Slootweg, Casper - \ 2013
    crop management - cultural methods - substrates - emission reduction - culture media - trials - lilies - ornamental crops
    Teelt de grond uit mogelijk, maar niet zonder onderzoek. (over het onderzoek van: JJ de Haan, T. Vermeulen, H. van Reuler en S. de Kool)
    Baakman, L. ; Haan, J.J. de; Vermeulen, T. ; Kool, S.A.M. de; Reuler, H. van; Blind, M. - \ 2013
    BloembollenVisie 2013 (2013)286. - ISSN 1571-5558 - p. 58 - 59.
    tuinbouw - gewasteelt - alternatieve methoden - substraten - gesloten systemen - cultuurmethoden - emissie - reductie - pesticiden - programmaontwikkeling - landbouwkundig onderzoek - horticulture - crop management - alternative methods - substrates - closed systems - cultural methods - emission - reduction - pesticides - program development - agricultural research
    De meeste bolgewassen groeien gewoon in de grond. Toch zijn er nog andere manieren. Het programma 'Teelt de grond uit' onderzocht de verschillende mogelijkheden zoals telen op water, substraten en op een afgedichte ondergrond. Tijdnes een informatiedag in Venray werd de stand van zaken tot nu toe toegelicht. Er zijn mogelijkheden, maar vervolgonderzoek is gewenst. En dat komt er.
    Meer mogelijkheden om in te spelen op lage zoutopname
    Voogt, W. ; Kierkels, T. ; Heuvelink, E. - \ 2013
    Onder Glas 10 (2013)10. - p. 42 - 43.
    glastuinbouw - groenten - snijbloemen - teeltsystemen - hergebruik van water - zouttolerantie - irrigatiewater - natriumchloride - fysische eigenschappen - gewasteelt - greenhouse horticulture - vegetables - cut flowers - cropping systems - water reuse - salt tolerance - irrigation water - sodium chloride - physical properties - crop management
    De komende jaren worden de spuinormen steeds strenger en moeten tuinbouwbedrijven het water steeds meer gaan hergebruiken. Dan zijn planteigenschappen als zoutgevoeligheid of een lage zoutopname nog belangrijker dan nu. Het is dus zaak om daar meer zicht op te krijgen om goed te kunnen sturen.
    De plant is koning
    Dueck, Tom - \ 2013
    crop management - cultural methods - conditioned cultivation - illumination - lamps - light regime - light emitting diodes - plant development - energy saving - environmental control - led lamps
    Strakke temperatuurstrategie is bij tomaat niet nodig: Snelheid opstoken en afkoelen heeft geen invloed op productie (interview met Anja Dieleman en Arie de Gelder)
    Arkesteijn, M. ; Dieleman, J.A. ; Gelder, A. de - \ 2012
    Onder Glas 9 (2012)5. - p. 52 - 53.
    glastuinbouw - glasgroenten - temperatuur - regulatie - gewasteelt - landbouwkundig onderzoek - groenten - greenhouse horticulture - greenhouse vegetables - temperature - regulation - crop management - agricultural research - vegetables
    Veel tomatentelers houden een strak temperatuurregime aan: een lage temperatuur in de voornacht, opstoken naar de dag en aan het einde van de dag weer snel afkoelen tot de nachttemperatuur. Niet nodig blijkt uit de resultaten van het laatste onderzoeksjaar. ‘s Morgens langzaam de temperatuur op laten komen en deze ‘s avonds weer langzaam laten zakken, geeft dezelfde resultaten.
    Teelt op water
    Vermeulen, T. - \ 2011
    Wageningen UR Glastuinbouw
    teeltsystemen - cultuur zonder grond - water - gewasteelt - plantenontwikkeling - groenteteelt - bloementeelt - cropping systems - soilless culture - water - crop management - plant development - vegetable growing - floriculture
    Wat is telen op water, wat zijn de belangrijkste teeltsystemen, welke gewassen kunnen op water worden geteeld en wat zijn de afwegingen om op substraat te telen of op water.
    Climate change and plant health; Development of a conceptual frame-work for impact assessment
    Breukers, M.L.H. - \ 2010
    Den Haag : LEI, onderdeel van Wageningen UR (LEI report : Research area Agriculture & entrepreneurship ) - ISBN 9789086154647 - 59
    klimaatverandering - plantenplagen - plantenziekten - plantenziektebestrijding - gewassen - gewasteelt - ziektepreventie - climatic change - plant pests - plant diseases - plant disease control - crops - crop management - disease prevention
    This report presents a conceptual framework for systematic assessment of direct economic impacts of climate change on pest and disease management at the crop level. The framework evaluates and aggregates the effects, and subsequently impacts, of climate change on selected pests and diseases and their control in a particular crop. Application of the framework reveals opportunities and threats in crop protection resulting from climate change, and can direct future adaptation efforts.
    Soil macrofauna functional groups and their effects on soil structure, as related to agricultural management practices across agroecological zones of Sub-Saharan Africa
    Ayuke, F.O. - \ 2010
    Wageningen University. Promotor(en): Lijbert Brussaard, co-promotor(en): Mirjam Pulleman; B. Vanlauwe; J. Six. - [S.l. : S.n. - ISBN 9789085856870 - 202
    agrarische bedrijfsvoering - gewasteelt - bodemstructuur - wormhoopjes - termietenheuvels - mierenhopen - agro-ecologische zones - isoptera - aardwormen - afrika ten zuiden van de sahara - kenya - macrofauna - farm management - crop management - soil structure - worm casts - termitaria - ant hills - agroecological zones - isoptera - earthworms - africa south of sahara - kenya - macrofauna
    This study aimed at understanding the effects of crop management practices on soil macrofauna and the links with soil aggregation and soil organic matter dynamics, which is key to the improvement of infertile or degrading soils in Sub-Sahara Africa. Soil macrofauna, especially earthworms and termites, are important components of the soil ecosystem and, as ecosystem engineers, they influence the formation and maintenance of soil structure and regulate soil processes, such as organic matter decomposition and nutrient dynamics. In comparison with natural systems, earthworm and termite diversity and abundance were low in fallow, high soil-carbon (C) and low soil-C arable treatments in 12 long-term trial fields across the sub-humid to semi-arid tropical zones in Eastern and Western Africa. Continuous crop production had significant negative effects on earthworm diversity, but little effect on termite diversity, as compared to long-term fallow. Agricultural management resulting in high soil C increased earthworm and termite diversity as compared to low-C soil.Long-term application of manure in combination with fertilizer resulted in higher earthworm diversity and biomass, associated with improved soil aggregation and enhanced C and N stabilization within this more stable soil structure. These practices therefore result in the dual benefits of improving soil physical and chemical properties. A micromorphological study of undisturbed soil thin sections showed that fallowing, conservation tillage plus residue application (in East Africa) and hand-hoeing plus manure (in West Africa) enhanced biogenic soil structure formation, resulting in a well developed soil structure and a continuous pore system characterized by many faunal channels. In contrast,intensive tillage and absence of organic inputs resulted in soil with less biogenic soil structural features. Farmers in Nyabeda, West-Kenya, were aware of the activities and nesting habits of termites, but 90% percent of the farmers perceived termites as pests.This study has shown that the soil macrofauna, especially earthworms, and, to a lesser extent termites, are important drivers of stable soil aggregation in Sub-Saharan agroecosystems, with beneficial effects on soil physical and chemical properties. However, their beneficial impact on soil aggregation is reduced with increasing management intensity and associated soil disturbance due to cultivation. This knowledge is important in designing agricultural management systems aimed at increasing long-term soil fertility in Sub-Saharan Africa.
    Plaatspecifieke optimalisatie doseringen van geasbeschermingsmiddelen
    Kempenaar, C. ; Zande, J.C. van de - \ 2010
    Gewasbescherming 41 (2010)1. - ISSN 0166-6495 - p. 18 - 18.
    precisielandbouw - onkruidbestrijding - herbiciden - pesticiden - gewasteelt - globale plaatsbepalingssystemen - tegen herbiciden resistente onkruiden - dosering - geïntegreerde bestrijding - akkerbouw - vollegrondsteelt - precision agriculture - weed control - herbicides - pesticides - crop management - global positioning systems - herbicide resistant weeds - dosage - integrated control - arable farming - outdoor cropping
    Precisielandbouwtechnieken bieden mogelijkheden om de inzet en dosering van gewasbeschermingsmiddelen plaatsspecifiek te optimaliseren. Optimalisatie kan plaatsvinden op verschillende schaalniveaus: in stroken, op vlakken (grids) of op individuele planten. In deze presentatie tijdens de KNPV-studiedag 2009 worden drie ontwikkelingen besproken op het gebied van plaatsspecifieke optimalisatie van doseringen op vlakken van ca 30 m2 binnen percelen of gewassen. De dosering wordt per vlak afgestemd op de minimumbehoefte. Deze plaatsspecifieke optimalisatie wordt ook wel variabel doseren genoemd
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