Description: Das Projekt "Sub-project F1: Gaseous and leaching nutrient losses in irrigation farming of fertilised sandy soils in Oman - Effects of manure quality and cropping system" wird vom Umweltbundesamt gefördert und von Universität Kassel, Fachgruppe Boden- und Pflanzenbauwissenschaften, Institut für Nutzpflanzenkunde, Fachgebiet Ökologischer Pflanzenbau und Agrarökosystemforschung in den Tropen und Subtropen durchgeführt. Organic and conventional irrigation farming on the eastern coast of the arid Arabian Peninsula leads to high gaseous and leaching losses of nutrients and carbon from cultivated soils. In order to analyse such losses, the emissions NH3, N2O, CO2 and CH4 were measured on an experimental field near to the town of Sohar in the Sultanate of Oman. This was done using an INNOVA photo-acoustic infrared multi-gas monitor (INNOVA 1312-5, LumaSense Technologies A/S, Ballerup, Denmark) in a closed chamber system. Cumulative leaching losses of nitrogen (TN, NO3-N, NH4-N), phosphorous (P), potassium (K) and dissolved organic carbon (DOC) were measured by suction plates and mixed-bed ion-exchange resin cartridges (NO3-N, NH4-N, PO4-P). Seepage was estimated with the software Hydrus 1d using crop-specific evapotranspiration and hydraulic soil parameters. The experiment on an irrigated sandy soil with four replications comprised of two types of buffalo manure, characterised by a C/N ratio of 23 with high fibre content (high-high, HH), a C/N ratio of 15 with low fibre content (low-low, LL) and a control treatment with equivalent levels of mineral nitrogen (N), phosphorous (P) and potassium (K). These three fertility treatments were combined with a crop rotation comprised of radish (Raphanus sativus) transplanted on all plots followed by cauliflower (Brassica oleracea var. botrytis) and carrot (Daucus carota subsp. sativus).
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Festmist ? Ammonium ? Phosphorgehalt ? Wirtschaftsdünger ? Kaliumgehalt ? Kassel ? Bildschirm ? Ammoniak ? Blech ? Bodennährstoff ? Kalium ? Stickstoffgehalt ? Ammoniumstickstoff ? Bodenkohlenstoff ? Nährstoff ? Botrytis ? Evapotranspiration ? Phosphor ? Skigebiet ? Stickstoff ? Arabische Halbinsel ? Dänemark ? Akustik ? Lachgas ? Hydraulik ? Kohlendioxid ? Methan ? Nährstoffauswaschung ? Sandboden ? Software ? Wirkung ? Gelöster organischer Kohlenstoff ? Absaugung ? Fruchtfolge ? Emission ? Ionenaustausch ? Düngung ? Tropengebiet ? Trockengebiet ? Stadt ? Boden ? Schaden ? Wirkung ? Ökologischer Landbau ? Bewässerungsfeldbau ? Ackerland ? Messung ? Fruchtbarkeit ? Nitrat-Stickstoff ? Fotografie ? Kenngröße ? Versickerung ? Küste ? Harz ? Faser ? Mineral ? PROJEKT ? KONTROLLE ? EXPERIMENT ? Replikation ? KONVENTIONELL ? SPEZIFISCH ? Berlin [Land] ? GEMISCHT ? STILLGELEGT ? Erlass [Recht] ? GEHALT ?
Region: Hessen
Bounding box: 9° .. 9° x 50.55° .. 50.55°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2007-01-01 - 2010-12-31
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