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Dissolution rate and agronomic effectiveness of struvite fertilizers — effect of soil pH, granulation and base excess

Aims Struvite (MgNH₄PO₄.6H₂O) recovered from wastewater can be used as fertilizer. The agronomic effectiveness of struvite has mostly been evaluated using ground fertilizer mixed through soil. However, fertilizers are most commonly applied in granular form in the field. In this study, we assessed th... Full description

Journal Title: Plant and soil 2017-01-01, Vol.410 (1/2), p.139-152
Main Author: Degryse, Fien
Other Authors: Baird, Roslyn , da Silva, Rodrigo C , McLaughlin, Mike J
Format: Electronic Article Electronic Article
Language: English
Subjects:
Publisher: Cham: Springer
ID: ISSN: 0032-079X
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recordid: cdi_proquest_miscellaneous_1868308459
title: Dissolution rate and agronomic effectiveness of struvite fertilizers — effect of soil pH, granulation and base excess
format: Article
creator:
  • Degryse, Fien
  • Baird, Roslyn
  • da Silva, Rodrigo C
  • McLaughlin, Mike J
subjects:
  • Biomedical and Life Sciences
  • Chemical properties
  • Diffusion
  • Dissolution
  • Dissolution (Chemistry)
  • Ecology
  • Fertilizers
  • Life Sciences
  • Observations
  • Phosphorus
  • Plant Physiology
  • Plant Sciences
  • Regular Article
  • Soil fertility
  • Soil Science & Conservation
  • Triticum aestivum
ispartof: Plant and soil, 2017-01-01, Vol.410 (1/2), p.139-152
description: Aims Struvite (MgNH₄PO₄.6H₂O) recovered from wastewater can be used as fertilizer. The agronomic effectiveness of struvite has mostly been evaluated using ground fertilizer mixed through soil. However, fertilizers are most commonly applied in granular form in the field. In this study, we assessed the dissolution and effectiveness of different struvites when applied in granular or powdered form. Methods Phosphorus (P) diffusion in soil, determined using a visualization technique and chemical analyses, and P uptake by 6-week old wheat was compared for soluble fertilizer (monoammonium phosphate, MAP), a commercial struvite and three synthesized struvites with different excess MgO, in both granular and ground form. Results Ground struvite mixed through soil quickly dissolved and its agronomic effectiveness was similar to that of MAP. For pure granular struvite, the granule dissolution rate ranged from circa 0.03 mg d⁻¹ in alkaline soil to 0.43 mg d⁻¹ in acidic soil. Excess base in the struvite fertilizer reduced its dissolution rate. The P uptake by wheat followed the order MAP >> struvite ≥ control (no P), with no significant difference between the control and the struvite treatment in alkaline soil. Conclusions Both fertilizer characteristics (particle size, excess base) and soil pH strongly affect the dissolution rate of struvite and hence its agronomic effectiveness.
language: eng
source:
identifier: ISSN: 0032-079X
fulltext: no_fulltext
issn:
  • 0032-079X
  • 1573-5036
url: Link


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titleDissolution rate and agronomic effectiveness of struvite fertilizers — effect of soil pH, granulation and base excess
creatorDegryse, Fien ; Baird, Roslyn ; da Silva, Rodrigo C ; McLaughlin, Mike J
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descriptionAims Struvite (MgNH₄PO₄.6H₂O) recovered from wastewater can be used as fertilizer. The agronomic effectiveness of struvite has mostly been evaluated using ground fertilizer mixed through soil. However, fertilizers are most commonly applied in granular form in the field. In this study, we assessed the dissolution and effectiveness of different struvites when applied in granular or powdered form. Methods Phosphorus (P) diffusion in soil, determined using a visualization technique and chemical analyses, and P uptake by 6-week old wheat was compared for soluble fertilizer (monoammonium phosphate, MAP), a commercial struvite and three synthesized struvites with different excess MgO, in both granular and ground form. Results Ground struvite mixed through soil quickly dissolved and its agronomic effectiveness was similar to that of MAP. For pure granular struvite, the granule dissolution rate ranged from circa 0.03 mg d⁻¹ in alkaline soil to 0.43 mg d⁻¹ in acidic soil. Excess base in the struvite fertilizer reduced its dissolution rate. The P uptake by wheat followed the order MAP >> struvite ≥ control (no P), with no significant difference between the control and the struvite treatment in alkaline soil. Conclusions Both fertilizer characteristics (particle size, excess base) and soil pH strongly affect the dissolution rate of struvite and hence its agronomic effectiveness.
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subjectBiomedical and Life Sciences ; Chemical properties ; Diffusion ; Dissolution ; Dissolution (Chemistry) ; Ecology ; Fertilizers ; Life Sciences ; Observations ; Phosphorus ; Plant Physiology ; Plant Sciences ; Regular Article ; Soil fertility ; Soil Science & Conservation ; Triticum aestivum
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descriptionAims Struvite (MgNH₄PO₄.6H₂O) recovered from wastewater can be used as fertilizer. The agronomic effectiveness of struvite has mostly been evaluated using ground fertilizer mixed through soil. However, fertilizers are most commonly applied in granular form in the field. In this study, we assessed the dissolution and effectiveness of different struvites when applied in granular or powdered form. Methods Phosphorus (P) diffusion in soil, determined using a visualization technique and chemical analyses, and P uptake by 6-week old wheat was compared for soluble fertilizer (monoammonium phosphate, MAP), a commercial struvite and three synthesized struvites with different excess MgO, in both granular and ground form. Results Ground struvite mixed through soil quickly dissolved and its agronomic effectiveness was similar to that of MAP. For pure granular struvite, the granule dissolution rate ranged from circa 0.03 mg d⁻¹ in alkaline soil to 0.43 mg d⁻¹ in acidic soil. Excess base in the struvite fertilizer reduced its dissolution rate. The P uptake by wheat followed the order MAP >> struvite ≥ control (no P), with no significant difference between the control and the struvite treatment in alkaline soil. Conclusions Both fertilizer characteristics (particle size, excess base) and soil pH strongly affect the dissolution rate of struvite and hence its agronomic effectiveness.
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abstractAims Struvite (MgNH₄PO₄.6H₂O) recovered from wastewater can be used as fertilizer. The agronomic effectiveness of struvite has mostly been evaluated using ground fertilizer mixed through soil. However, fertilizers are most commonly applied in granular form in the field. In this study, we assessed the dissolution and effectiveness of different struvites when applied in granular or powdered form. Methods Phosphorus (P) diffusion in soil, determined using a visualization technique and chemical analyses, and P uptake by 6-week old wheat was compared for soluble fertilizer (monoammonium phosphate, MAP), a commercial struvite and three synthesized struvites with different excess MgO, in both granular and ground form. Results Ground struvite mixed through soil quickly dissolved and its agronomic effectiveness was similar to that of MAP. For pure granular struvite, the granule dissolution rate ranged from circa 0.03 mg d⁻¹ in alkaline soil to 0.43 mg d⁻¹ in acidic soil. Excess base in the struvite fertilizer reduced its dissolution rate. The P uptake by wheat followed the order MAP >> struvite ≥ control (no P), with no significant difference between the control and the struvite treatment in alkaline soil. Conclusions Both fertilizer characteristics (particle size, excess base) and soil pH strongly affect the dissolution rate of struvite and hence its agronomic effectiveness.
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