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Nutrient use efficiency and plant availability of bio-based phosphorus fertilizers

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Abstract
In the transition to a bio-based economy the efficient use of soil phosphate and phosphorus containing synthetic and organic fertilizers, as well as the cradle-to-cradle recycling of phosphorus from waste products has become highly important. The aim of this study was to evaluate the bioavailability of potential recovered bio-based phosphorus fertilizers, including struvite, iron phosphate sludge, digestate and animal manure as compared to water soluble synthetic triple super phosphate. To this end, first a product physico-chemical characterization and phosphorus fractionation was conducted. Furthermore, a pot experiment was set-up in order to evaluate plant growth and phosphorus uptake, as well as changes in soil phosphorus bioavailability on sandy soils with both high and low phosphorus status. Struvite demonstrated potential as slow release, mixed nutrient fertilizer, indirectly providing a high immediate phosphorus availability, as well as a stock for delayed, slow release. The use of FePO4 as start fertilizer did not seem interesting, but it has perspective for use as forest fertilizer raw material on drained soils. Moreover, the phosphorus use efficiency of animal manure could be improved by anaerobic co-digestion in order to create digestate for application to the field. Based on all results, the additional use of rhizon soil moisture samplers for determination of direct available phosphorus is proposed for better understanding and categorization of different inorganic and organic phosphate fertilizers in European legislation. This should lead to an improved phosphorus differentiation as basis for the manure advice, thereby moving towards a more efficient and sustainable phosphate use in agriculture.
Keywords
nutrient recycling, phosphate use efficiency, chemical extraction, bioavailability, bio-based fertilizers, pot experiment

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Chicago
Vaneeckhaute, Céline, Erik Meers, Evi Michels, Greet Ghekiere, Frederik Accoe, Viooltje Lebuf, and Filip Tack. 2012. “Nutrient Use Efficiency and Plant Availability of Bio-based Phosphorus Fertilizers.” In Closing the Phosphorus Cycle, Posters.
APA
Vaneeckhaute, Céline, Meers, E., Michels, E., Ghekiere, G., Accoe, F., Lebuf, V., & Tack, F. (2012). Nutrient use efficiency and plant availability of bio-based phosphorus fertilizers. Closing the phosphorus cycle, Posters. Presented at the Workshop on Closing the phosphorus cycle.
Vancouver
1.
Vaneeckhaute C, Meers E, Michels E, Ghekiere G, Accoe F, Lebuf V, et al. Nutrient use efficiency and plant availability of bio-based phosphorus fertilizers. Closing the phosphorus cycle, Posters. 2012.
MLA
Vaneeckhaute, Céline, Erik Meers, Evi Michels, et al. “Nutrient Use Efficiency and Plant Availability of Bio-based Phosphorus Fertilizers.” Closing the Phosphorus Cycle, Posters. 2012. Print.
@inproceedings{3063318,
  abstract     = {In the transition to a bio-based economy the efficient use of soil phosphate and phosphorus containing synthetic and organic fertilizers, as well as the cradle-to-cradle recycling of phosphorus from waste products has become highly important. The aim of this study was to evaluate the bioavailability of potential recovered bio-based phosphorus fertilizers, including struvite, iron phosphate sludge, digestate and animal manure as compared to water soluble synthetic triple super phosphate. To this end, first a product physico-chemical characterization and phosphorus fractionation was conducted. Furthermore, a pot experiment was set-up in order to evaluate plant growth and phosphorus uptake, as well as changes in soil phosphorus bioavailability on sandy soils with both high and low phosphorus status. Struvite demonstrated potential as slow release, mixed nutrient fertilizer, indirectly providing a high immediate phosphorus availability, as well as a stock for delayed, slow release. The use of FePO4 as start fertilizer did not seem interesting, but it has perspective for use as forest fertilizer raw material on drained soils. Moreover, the phosphorus use efficiency of animal manure could be improved by anaerobic co-digestion in order to create digestate for application to the field. Based on all results, the additional use of rhizon soil moisture samplers for determination of direct available phosphorus is proposed for better understanding and categorization of different inorganic and organic phosphate fertilizers in European legislation. This should lead to an improved phosphorus differentiation as basis for the manure advice, thereby moving towards a more efficient and sustainable phosphate use in agriculture.},
  author       = {Vaneeckhaute, C{\'e}line and Meers, Erik and Michels, Evi and Ghekiere, Greet and Accoe, Frederik and Lebuf, Viooltje and Tack, Filip},
  booktitle    = {Closing the phosphorus cycle, Posters},
  language     = {eng},
  location     = {Leeds, UK},
  title        = {Nutrient use efficiency and plant availability of bio-based phosphorus fertilizers},
  year         = {2012},
}