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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Assessment of N availability of roots of selected woody species and maize \ Biological agriculture and horticulture : an international journal [Artikel]
Risasi, E.L. \ Kang, B.T. \ Opuwaribo, E.E. \ 1998
In low-input agricultural systems, where the above-ground plant residues are removed for use as fodder or fuelwood, plant root residues can serve as the main source of soil organic matter and nutrients. Pot experiments in Nigeria investigated the eff ...
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Effects of seaweed on potato yields and soil chemistry \ Biological agriculture and horticulture : an international journal [Artikel]
Lopez - Mosquera, M.E. \ Pazos, P. \ 1997
In field experiments in Galicia (northwest Spain) seaweed as fertilizer for potatoes was compared with conventional fertilizing (cattle manure plus NPK) and no fertilizer at all. The chemical properties of the soil before planting and at the end of s ...
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Effect of manure on crop yield and quality in an organic agricultural system \ Biological agriculture and horticulture : an international journal [Artikel]
Stein - Bachinger, K. \ Werner, W. \ 1997
On organically managed farms the available amount of farmyard manure is often limited. The aim of a research project in Germany was to develop strategies for an efficient use of the limited amount of organic manure by variation of the date of applica ...
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Effects of stockpiled and composted manures on germination and initial growth of cress (Lepidium sativum) \ Biological agriculture and horticulture : an international journal [Artikel]
Pare, T. \ Gregorich, E.G. \ Dinel, H. \ 1997
In cold areas, winter may delay the composting process and biomaturity when composting is carried out outdoors. Immature compost may lead to seed germination inhibition and plant injuries. In Canada, experiments were performed in which water extracts ...
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Nutrient content of poultry manures and the optimum rate for eggplant fruit yield in a weathered tropical ultisol \ Biological agriculture and horticulture : an international journal [Artikel]
Opara, C.N. \ Asiegbu, J.E. \ 1996
Report of field experiments in Nigeria with 3 types of West African eggplant (large-, medium-, and small-fruited). Poultry manure from different locations and with different nutrient concentrations was applied at different rates, and the influence on ...
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Growth and responses of castor oil plant to sources and rates of organic manures in ferralitic soils \ Biological agriculture and horticulture : an international journal [Artikel]
Ugbaja, R.A.E. \ 1996
Four organic manures, i.e. poultry and swine manure, fresh rice husk dust and burnt rice husk dust, and inorganic NPK fertilizer were compared on their effects on growth and yield of castor oil plant on ferralitic soils in Nigeria
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Nodulation and yields of Arachis hypogaea L. as affected by soil management in the Congo \ Biological agriculture and horticulture : an international journal [Artikel]
Mandimba, G.R. \ Djondo, Y.M. \ 1996
Burning of crop residues and trash is a common practice in the groundnut nodulation cropping areas in Congo. Experiments were conducted to assess the effect of the burning farming system on soil rhizobia and groundnut nodulation and yields, as compar ...
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Selection of efficient VA mycorrhizal fungi for papaya \ Biological agriculture and horticulture : an international journal [Artikel]
Reddy, B. \ Bararaj, D.J. \ Mallesha, B.C. \ 1996
In experiments in India, 13 different vesicular-arbuscular mycorrhizal fungi were screened for their symbiotic efficiency with papaya (Carica papaya L.). Glomus mosseae (ICRISAT) was found to be the best fungus for improving growth and nutrition of p ...
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Biodynamic preparations cause opposite yield effects depending upon yield levels \ Biological agriculture and horticulture : an international journal [Artikel]
Raupp, J. \ Koenig, U.J. \ 1996
For the opposite yield effects of biodynamic spray preparations (yield increase at higher yield levels and yield decrease at lower levels) a significant linear regression is calculated, based on data from different experiments with cereals, carrots, ...
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N uptake in relation to N application during two crop rotations in the DOC field trial \ Biological agriculture and horticulture : an international journal [Artikel]
Besson, J.M. \ Spiess, E. \ Niggli, U. \ 1995
Results of an experiment on a loamy soil near Basel comparing the influence for three farming systems (bio-dynamic, bio-organic and conventional) on yield and quality for selected crops as well as soil chemistry, soil physics and soil biology
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Comparisons of nitrogen leaching in ecological and conventional cropping systems \ Biological agriculture and horticulture : an international journal [Artikel]
Eltun, R. \ 1995
In a cropping system project aimed at developing cropping systems which minimise nutrient leaching and maximise food quality and economy, conventional and ecological farming systems are compared for nitrate losses. Systems differ in crop rotation, ni ...
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Influence of crops and cultivation management on the nitrogen leaching potential on ecological farms in South East Norway \ Biological agriculture and horticulture : an international journal [Artikel]
Solberg, S.O. \ 1995
Over a 2-3 years period nitrogen leaching has been followed at 17 ecological farms in South East Norway. Results were compared for different crops and soil treatments
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Strategies to reduce nitrogen losses via leaching and to increase precrop effects when growing faba beans \ Biological agriculture and horticulture : an international journal [Artikel]
Justus, M. \ Koepke, U. \ 1995
Faba bean cultivation techniques were tested with the primary aim to reduce nitrate losses via leaching by increasing crop soil-nitrate uptake. Undersown brassicas like oil-radish or white mustard were more efficient than ryegrass and intercropping w ...
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Nitrogen leaching in ecological agriculture: summary and recommendations \ Biological agriculture and horticulture : an international journal [Artikel]
Kristensen, L. \ 1995
This paper summarizes the discussion of an international workshop in 1993 on nitrogen leaching in ecological agriculture. The paper identifies key factors of major importance to nitrogen leaching from ecological agriculture. These are: the farming sy ...
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Evaluation of the chemical composition of manures from different organic wastes and their potential for supply of nutrients to tomato in a tropical ultisol \ Biological agriculture and horticulture : an international journal [Artikel]
Asiegbu, J.E. \ Oikeh, S. \ 1995
Sewage sludge, swine, rabbit and poultry manures from four farm or homestead wastes in Nigeria were analysed and compared with NPK fertilizer for their ability to supply nutrients to tomato plants under field conditions
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Losses of nutrients through leaching and surface runoff from manure-containing composts \ Biological agriculture and horticulture : an international journal [Artikel]
Ulen, B. \ 1993
Losses of nutrients through leaching and surface runoff from experimental composts (manure from milkcows mixed with various amounts of straw) were investigated at Ekenaes farm in central Sweden. The manure came from a farm that had recently converted ...
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Leguminous browse supplementation effect on the agronomic value of sheep and goat manure \ Biological agriculture and horticulture : an international journal [Artikel]
Cobbina, J. \ Attah - Krah, A.N. \ Kang, B.T. \ 1989
The purpose of the study was to monitor the trend of nitrogen build-up in wood shavings used as bedding for sheep/goats fed on leguminous fodder supplementation and to determine effects of increasing levels of supplementation in the diet on manurial ...
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the potential of sewage sludge and composting in a nitrogen recycling strategy for agriculture \ Biological agriculture and horticulture : an international journal [Artikel]
Witter, E. \ Lopez - Real, J.M. \ 1988
Sewage sludge can provide an important part of the nutrient requirements in agriculture. In industrialized countries its use is restricted by contamination with industrial wastes, in particular heavy metals. In developing countries it could make a su ...
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Effects of nettle water on growth and mineral nutrition of plants II : pot- and water-culture experiments \ Biological agriculture and horticulture : an international journal [Artikel]
Peterson, R. \ Jensen, P. \ 1986
Extracts of nettles (Urtica dioica) were evaluated for potential growth stimulating effects on wheat, tomato and barley. Approximately 10x dilution of nettle water gave the highest root fresh weight and adventitious root length in wheat in relation t ...
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Effects of nettle water on growth and mineral nutrition of plants : composition and properties of nettle water \ Biological agriculture and horticulture : an international journal [Artikel]
Peterson, R. \ Jensen, P. \ 1985
Nettle water (Urtica dioica) was analyzed for mineral constituents and various chemical and physical parameters. Nettles from different habitats in different months. Comparison of fresh and dry nettles and with or without storage. Significant seasona ...
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