Groenekennis

Informatie voor professionals in voedsel en groen

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    Groenekennis - Informatie voor professionals in voedsel en groen

    Groenekennis bevat artikelen uit vaktijdschriften, rapporten, video’s, presentaties, posters en websites op het gebied van landbouw, visserij, groene ruimte en voeding. Groenekennis wordt dagelijks bijgewerkt en bevat ongeveer 500.000 bronnen.

    Groenekennis is de globale view over diverse deelbestanden. Groenekennis is gevuld met alle informatie uit Groen Kennisnet, de Hydrotheek, Tuinpad, IB archief, ARTIK, bioKennis, Kennisbank Plantaardige bronnen, Kennisbank Zeldzame landbouwhuisdieren en afgesloten documentatiebestanden zoals Land Bodem Water en Consumenten- en huishoudstudies.

    Groen Kennisnet is een zeer belangrijk onderdeel van Groenekennis. De doelstelling van Groen Kennisnet is kennis delen op het gebied van Voedsel en Groen te bevorderen en te faciliteren voor een breed publiek.

    Bronnen in Groenekennis kunnen direct opgevraagd worden via een geavanceerde zoekmachine met een 'google-achtige' interface. Met filters kan ingezoomd worden op diverse aspecten, zoals Trefwoord, Collectie, Jaar en Auteur. Bovendien biedt Groenekennis gebruikers de mogelijkheid om via de E-mail geattendeerd te worden op aanvullingen in specifieke vakgebieden.
    De Tijdschriftenlijst biedt een overzicht van tijdschriften waaruit de artikelen voor Groenekennis worden geselecteerd. Door te klikken op een titel krijgt u alle artikelen uit dat tijdschrift in de Groenekennis database getoond.
    Zoeken op kaart biedt een geografische ingang op de beschikbare publicaties over de binnen dit bestand onderscheiden gebieden.

    Groenekennis is onderdeel van het bibliotheeksysteem van WUR. Praktijkgerichte publicaties en rapporten van WUR komen daardoor automatisch beschikbaar. Daarnaast wordt de database doorlopend gevuld met voor het groen onderwijs bruikbare bronnen en artikelen, video’s en websites. Het percentage online is de laatste jaren gegroeid tot tweederde van de totale aanwas per jaar. Dit percentage groeit nog steeds.

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Carefully compile a wish list and measure objectivity : advice on choosing the right diffuse greenhouse roof \ In greenhouses : the international magazine for greenhouse growers [Artikel]
Staalduinen, J. van \ 2016
Growers know that a diffuse roof – with or without an anti-reflective coating – offers added value compared with traditional greenhouse glass. However, it is not so simple to decide which one to choose. Researcher Silke Hemming lists all the relevant ...
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Contributing to the region's selfsufficiency in vegetable production : successful first reason for high-tech greenhouse in Russia \ In greenhouses : the international magazine for greenhouse growers [Artikel]
Radford, L. \ 2016
Agro-Invest’s new 20 ha greenhouse, located in the Kaluga region of Russia, has successfully completed its first growing season. This is the first stage in a project which will ultimately comprise a total of 100 hectares of greenhouse on 238 hectares ...
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'Production results are satisfactory but we need to raise the bar each year' : ID Greenhouse reaches energy goal in first year of production \ In greenhouses : the international magazine for greenhouse growers [Artikel]
Staalduinen, J. van \ 2016
Although their revolutionary greenhouse has had a superb first year, the brothers Duijvestijn see room for improvement. Technically there are still gains to be made. And, although the goal to save 50% on energy by using low-grade heat was achieved in ...
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Revolutionary greenhouse technology delivers higher yield and better quality : Japan’s biggest tomato producer grows even bigger \ In greenhouses : the international magazine for greenhouse growers [Artikel]
Radford, L. \ 2016
Japanese producer Kagome has recently completed its first season with a new tomato greenhouse complex designed and built by the Japanese company Daisen in close collaboration with a Dutch firm. The high-tech turnkey project comprises approximately 2 ...
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No artificial lighting but two energy screens and no dehumidification : tomato grower Van der Spek makes significant choices \ In greenhouses : the international magazine for greenhouse growers [Artikel]
Arkesteijn, M. \ 2016
Gertjan van der Spek is the first tomato grower without artificial lighting in the Netherlands to have two transparent energy screens and no dehumidification. This was his next step to save energy after having reduced the use of the minimum rail and ...
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Experts try to revitalise China’s failing high tech greenhouses : nurseries have significantly improved yield and efficiency \ In greenhouses : the international magazine for greenhouse growers [Artikel]
Armstrong, H. \ 2016
China’s increasing awareness of food safety and food security is driving development of more modern and efficient cultivation systems. Over the last 15 years many new ‘high-tech’ greenhouses have been constructed, often with help from local subsidies ...
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More homogenous climate requires different look at equipment and controls : largest temperature differences in highly insulated greenhouses \ In greenhouses : the international magazine for greenhouse growers [Artikel]
Staalduinen, J. van \ 2016
You’d think that the climate in modern, well insulated greenhouses would be a lot more homogeneous than in days gone by. Nothing could be further from the truth, says climate specialist Bas Knoll, of TNO, the Netherlands. In a project taking several ...
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‘Good plant balance ensures lower plant burden and faster ripening’ : tomato grower installs vertical fans as tool for NGG \ In greenhouses : the international magazine for greenhouse growers [Artikel]
Velden, P. van \ 2016
Gardener’s Pride, the tomato nursery belonging to Cock and Marja van Overbeek, is starting to master the principles of Next Generation Growing. The new greenhouse has vertical fans and manager Tim Schinkel is completely in his element because he can ...
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Winter light greenhouse at research centre ready for cucumber trial : will new greenhouse lead to 10% more light? \ In greenhouses : the international magazine for greenhouse growers [Artikel]
Hoogstraten, K. van \ 2016
The winter light greenhouse aims to enhance light transmission by more than 10% during the European winter. In September a trial greenhouse of 500 m2 was prepared at a site at Wageningen University & Research in Bleiswijk, the Netherlands. Among othe ...
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Proper installation minimises wear and tear on pull wires : screen installation drive systems open and close 300,000 times \ In greenhouses : the international magazine for greenhouse growers [Artikel]
Vahl, H. \ 2016
The life span of mechanical drive systems for screens mostly depends on the frequency of use, the amount of load, the technical implementation, the quality of the materials used and maintenance. In a well-laid and maintained screen system it’s the fr ...
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Diffuse screen results in more generative gerbera crop : ‘less need to maintain shorter day length’ \ In greenhouses : the international magazine for greenhouse growers [Artikel]
Staalduinen, J. van \ 2016
Gerbera grower Batist, of Maasdijk, the Netherlands, fitted a new, moveable climate screen with improved light diffusing properties into one of its greenhouses this spring. Due to less direct radiation, the crop is less quickly exposed to stress and ...
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Much to gain with improved control over lighting installations : more stable climate and steadier control \ In greenhouses : the international magazine for greenhouse growers [Artikel]
Staalduinen, J. van \ 2016
Assimilation lighting has a big impact on the greenhouse climate and - when the electricity is generated on site - on the efficiency of the energy generator. Optimising the control of the lighting installation leads to a gain in both areas. Two growe ...
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Less at the top, more gain at the bottom : better light penetration leads to higher production \ In greenhouses : the international magazine for greenhouse growers [Artikel]
Heuvelink, E. \ Kierkels, T. \ 2015
If light penetrates the crop better, it results in higher production. This is because the leaves that are deeper in the crop are a long way from their light saturation point. Diffuse glass or coatings and the distribution of the crop are the most app ...
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Sweet pepper plants grow faster and energy efficient with more light : research results: ‘Light signalling with the time’ \ In greenhouses : the international magazine for greenhouse growers [Artikel]
Hoogstraten, K. van \ 2015
Sweet pepper plants don’t grow well under SON-T lighting. Fact or fable? The prevailing opinion is that the propagation period and growth thereafter is difficult in winter. The conclusions from the research. ‘Light signalling with the time’ are there ...
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Fan combined with double screen saves 20 to 30% on energy : more energy-efficient cultivation and better climate \ In greenhouses : the international magazine for greenhouse growers [Artikel]
Kierkels, T. \ 2015
Shortly after the start of a trial to test a more energy-efficient means of cultivation, tomato grower Bert van den Brand can already conclude that it works. A combination of two fans draw cold air from above the screen downwards and distribute it. T ...
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Energy savings possible while maintaining stem weight and quality : lilies can make do with less light if there’s extra CO2 \ In greenhouses : the international magazine for greenhouse growers [Artikel]
Rodenburg, J. \ 2015
Researchers are without question enthusiastic about the results of lighting trials with lilies. Results from both the first as well as the second flower development clearly show that with extra CO2, less lighting is required while maintaining stem we ...
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Simple systems abroad coupled to high-tech solutions : MexiCultura: cooperation between Holland and Mexico \ In greenhouses : the international magazine for greenhouse growers [Artikel]
Velden, P. van \ 2015
Doing business with Mexican entrepreneurs is high on the wish list of Dutch companies. That’s not so simple when you’re used to building high-tech greenhouses. Yet the local growers want to improve their current methods of production. The Dutch can b ...
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Affordable roof with high level of insulation and light transmission : Next Generation Growing even more energy efficient \ In greenhouses : the international magazine for greenhouse growers [Artikel]
Rodenburg, J. \ 2015
Exactly one year ago Wageningen UR Greenhouse Horticulture and a consortium of Dutch companies started building a new, energy-efficient greenhouse. The key component is a cavity roof, with ventilation, made of clear glass under which is a layer of du ...
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New structure speeds construction and replacement of plastic cover : innovative greenhouse for high quality tomatoes in Mexico \ In greenhouses : the international magazine for greenhouse growers [Artikel]
Armstrong, H. \ 2015
Investors in Mexico have just completed phase three of a newly established nursery that is producing cluster tomatoes, mostly for the US and Canadian market. Phase four is in the pipeline. The project began in 2010 and already covers 15 ha. The green ...
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Extra light and save energy in ideal winter-light greenhouse : effect of condensation still being researched \ In greenhouses : the international magazine for greenhouse growers [Artikel]
Arkesteijn, M. \ 2015
A consortium of companies, together with Wageningen UR, is developing a greenhouse that will maximise the amount of light entering between October and March. The goal is to achieve 10% extra yield during these months. The gain in light should come fr ...
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