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Registros recuperados: 6
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Alternative Frischgemüsekulturen für den ökologischen Gemüsebau durch den Einsatz von Folientunneln mit Schwerpunkt auf dem Winterhalbjahr Organic Eprints
Perkons, Ute.
Die Nachfrage nach frischem vielfältigem und regionalem Gemüse steigt. Der Großteil des Gemüses wird im Winter entweder importiert oder in geheizten Gewächshäusern angebaut und ist durch einen hohen Energieverbrauch charakterisiert. Im Versuchszentrum Gartenbau der Landwirtschaftskammer NRW in Köln Auweiler wurde zur Erweiterung der Angebotspalette eine Salatmischung aus kältetoleranten Arten untersucht. Die Mischung umfasste Asia-Salate (z. B. Blattsenf, Mizuna, Pak-choi), Sauerampfer, Hirschhornwegerich, Endivie und Speisechrysantheme. Der Anbau im Versuch und in Praxisbetrieben und erwies sich in drei Jahren als unproblematisch. Die Mischung wurde sowohl optisch als auch geschmacklich sehr gut von den Verbrauchern angenommen. Besonders für direkt...
Tipo: Report Palavras-chave: Markets and trade; Vegetables; Greenhouses and coverings.
Ano: 2017 URL: http://orgprints.org/31748/1/31748-11OE038-lwk-nrw-perkons-2017-frischgemuese-folientunnel.pdf
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Düngungsstrategien im ökologischen Gemüsebau Organic Eprints
Perkons, Ute.
Futterleguminosen sind aufgrund ihrer Humusreproduktion und symbiotischen Stickstofffixierleistung die tragenden Elemente der Fruchtfolgegestaltung im Ökologischen Landbau. Der hohe Stickstoffbedarf gemüsebaulicher Kulturen wird derzeit meist über Zukaufdünger gedeckt, diese sind jedoch meist Reststoffe der konventionellen Tierhaltung. Vor diesem Hintergrund wird geprüft, inwieweit sich der Einsatz von Zukaufdüngern reduzieren lässt, indem betriebseigene Leguminosen-Schnitte und Komposte (Cut & Carry) zur Düngung einer intensiven Gemüse-Fruchtfolge verwendet werden. Die Ergebnisse zeigen exemplarisch für Eissalat, dass bei der Nutzung von betriebseigenem Dünger in Form von Luzernefrischmasse mit Zukaufdünger vergleichbare Erträge erreicht werden....
Tipo: Conference paper, poster, etc. Palavras-chave: Vegetables; Composting and manuring; Farm nutrient management.
Ano: 2019 URL: http://orgprints.org/36088/1/Beitrag_157_final_a.pdf
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Erzeugung einer regionalen Salat-Mischung im ungeheizten Folientunnel Organic Eprints
Perkons, Ute.
The demand for fresh vegetables in winter has been steadily increasing. In the cold season these are either imported or grown in heated greenhouses. Both systems are characterized by high energy consumption. Given rising energy prices and the large carbon footprint this situation is undesirable in organic agriculture. grown successfully in two seasons in unheated polytunnels at Horticultural Center Cologne- Auweiler. The taste and appearance of the harvested salad mixture received high consumer acceptance. Therefore the tested mixture is a valuable enhancement of the product range. This is especially interesting for farms which employ year round or have a direct marketing strategy.
Tipo: Conference paper, poster, etc. Palavras-chave: Vegetables; Buildings and machinery.
Ano: 2017 URL: http://orgprints.org/31851/1/Erzeugung%20einer%20regionalen%20Salat-Mischung%20im%20ungeheizten.pdf
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Pflanzenbauliche Nutzung von Bioporen im Unterboden Organic Eprints
Perkons, Ute; Küpper, Paul Martin; Kautz, Timo; Köpke, Ulrich.
Biopores act as pathways for the roots of following crops to access water and nutrients stored in the subsoil. Their role for nutrient management is especially important under the conditions of Organic Agriculture. In a field trial on Haplic Luvisol, chicory (Cichorium intybus L., tap root system) and tall fescue (Festuca arundinacea, fibrous root system) were grown as precrops. Effects on biopore density, root-length density (RLD), leaf area index (LAI), biomass, transpiration and photosynthesis of following winter barley (Hordeum vulgare L.) were measured. Biopore density and RLD declined with soil depth. In all depth levels biopore density was higher after chicory in comparison to fescue. Between 95 and 125 cm soil depth the difference was significant....
Tipo: Conference paper, poster, etc. Palavras-chave: Crop husbandry; Soil.
Ano: 2013 URL: http://orgprints.org/21634/1/21634_Perkons.pdf
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Rates of photosynthesis and transpiration of spring wheat and barley as influenced by fodder precrops and their cropping period Organic Eprints
Küpper, Paul Martin; Perkons, Ute; Pries, Charlotte; Antar, Philipp Martin; Kautz, Timo; Köpke, Ulrich.
Perennial fodder cropping as compared to rotations including annual ploughing can increase the number of medium and large sized biopores in the subsoil. This can result in potentially facilitated root growth followed by increased accessibility of water in the subsoil. Additional plant-available water can enable stands to cope with dry periods in early summer, which will take place more often in future due to climate change. In this context we investigated whether crop species or cropping period of forage cropping influenced rates of photosynthesis and transpiration as indicators for water availability of spring wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.).
Tipo: Conference paper, poster, etc. Palavras-chave: Crop combinations and interactions.
Ano: 2014 URL: http://orgprints.org/24174/1/24174_MM.pdf
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Root growth response of spring wheat (Triticum aestivum L.) and mallow (Malva sylvestris L.) to biopore generating precrops Organic Eprints
Perkons, Ute; Kautz, Timo; Köpke, Ulrich.
Little is known about root growth in biopores. The aim of this study was to quantify differences of root-length density (RLD) in biopores between a tap root system (mallow) and a fibrous root system (wheat). A field experiment was undertaken near Bonn, Germany on a Haplic Luvisol developed from loess. Lucerne (Medicago sativa L.) and chicory (Cichorium intybus L.) were grown as precrops in a field trial followed by spring wheat (Triticum aestivum L.) and mallow (Malva sylvestris L.). Biopore density was measured on horizontal areas of 50 x 50 cm. RLD was estimated using the profile wall method to 160 cm soil depth. Roots growing in biopores with a diameter > 2 mm were recorded separately from the roots in the bulk soil. Biopore density was higher...
Tipo: Conference paper, poster, etc. Palavras-chave: Crop combinations and interactions Cereals; Pulses and oilseeds.
Ano: 2014 URL: http://orgprints.org/23996/1/23996%20Perkons_et_al_final_MM.pdf
Registros recuperados: 6
Primeira ... 1 ... Última
 

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