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Wollmann, Iris [VerfasserIn]; Möller, Kurt [VerfasserIn]; 1 Department of Fertilisation and Soil Matter Dynamics Institute of Crop Science University of Hohenheim Stuttgart Germany [VerfasserIn]

Increased phosphorus availability from sewage sludge ashes to maize in a crop rotation with clover

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  • Medientyp: E-Artikel
  • Titel: Increased phosphorus availability from sewage sludge ashes to maize in a crop rotation with clover
  • Beteiligte: Wollmann, Iris [VerfasserIn]; Möller, Kurt [VerfasserIn]; 1 Department of Fertilisation and Soil Matter Dynamics Institute of Crop Science University of Hohenheim Stuttgart Germany [VerfasserIn]
  • Erschienen: GEO-LEOe-docs (FID GEO), 2022-04-23
  • Sprache: Englisch
  • DOI: https://doi.org/10.1111/sum.12806
  • Schlagwörter: pot experiment ; phosphorus mobilization ; red clover ; organic farming ; sewage sludge ash
  • Entstehung:
  • Anmerkungen: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Beschreibung: A recycling of Phosphorus (P) from the human food chain is mandatory to secure the future P supply for food production. However, many available recycled P fertilizers from sewage sludge do not have an adequate P bioavailability and, thus, are not suitable for their application in soils with pH >5.5–6.0, unless being combined with efficient mobilization measures. The aim of the study was to test the P mobilization ability of red clover (Trifolium pratense L.) from two thermally recycled P fertilizers for a subsequently grown maize. Two sewage sludge ashes (SSA) were investigated in a pot experiment at soil pH 7.5 with red clover differing in its nitrogen (N) supply (added N fertilizer or biological N2 fixation (BNF)), followed by maize (Zea maize L.). Shoot dry matter of maize was almost doubled when N supply of previous grown clover was covered by BNF, instead of receiving added N fertilizer. Similarly, shoot P removal of maize following clover with BNF was significantly increased. It is suggested that the P mobilization is related to the BNF, and a proton release of N2 fixing clover roots led to the measured decrease in soil pH and thereby increased P availability of the tested fertilizers. ; CORE Organic II
  • Zugangsstatus: Freier Zugang