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Phosphorus effects of recycled products from municipal wastewater on crops in a field experiment

Author

Listed:
  • Telse VOGEL

    (Faculty of Agricultural and Environmental Sciences, Agronomy, University of Rostock, Rostock, Germany)

  • Michael NELLES

    (Faculty of Agricultural and Environmental Sciences, Waste Management and Material Flow, University of Rostock, Rostock, Germany)

  • Bettina EICHLER-LÖBERMANN

    (Faculty of Agricultural and Environmental Sciences, Agronomy, University of Rostock, Rostock, Germany)

Abstract

In this study, the phosphorus (P) fertilizing effects of struvite, one thermochemical-treated sewage sludge ash (SSA) based on Ca-P (Ca-SSA) and one full sulfuric acid-digested SSA based on Al-P (Al-SSA) were analysed in comparison to triple superphosphate (TSP) and a control treatment (CON) without P application in a two-year field experiment. In the field experiment, the effects of the recycling products on crop yield, P uptake and labile soil P fractions were analysed. In addition, the effect of nitrogen and magnesium contained in struvite was investigated in the second year of the experiment compared to TSP and CON. In the first year, spring barley was cultivated in the field experiment; and in the second year, it was forage rye followed by sorghum. In the second year, the relative P effectiveness (forage rye, sorghum) of the recycling products compared to TSP increased in the order: Ca-SSA (81%, 91%) ≤ Al-SSA (91%, 96%) = struvite (102%, 110%). In addition, an magnesium fertilizing effect of struvite could be demonstrated. The results show that the recycling products from wastewater treatment are appropriate to substitute rock phosphate-based fertilizers.

Suggested Citation

  • Telse VOGEL & Michael NELLES & Bettina EICHLER-LÖBERMANN, 2017. "Phosphorus effects of recycled products from municipal wastewater on crops in a field experiment," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 63(10), pages 475-482.
    • Handle: RePEc:caa:jnlpse:v:63:y:2017:i:10:id:513-2017-pse
    DOI: 10.17221/513/2017-PSE
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    References listed on IDEAS

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    1. James J Elser & Timothy J Elser & Stephen R Carpenter & William A Brock, 2014. "Regime Shift in Fertilizer Commodities Indicates More Turbulence Ahead for Food Security," PLOS ONE, Public Library of Science, vol. 9(5), pages 1-7, May.
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