Fertilizing effect of wastewater-derived granular struvite on contrasting Manitoba soils

Canadian Journal of Soil Science

article

Joanne R. Thiessen Martens¹  Oban D. Srinathan²  Inoka Amarakoon¹ 

[1] Department of Soil Science, University of Manitoba;Shaftesbury High School

关键词: struvite;    phosphorus;    fertilizer;    soil;   

DOI  :  10.1139/CJSS-2022-0013

学科分类：农业科学（综合）

来源: NRC Research Press

【 摘 要 】

Wastewater-derived struvite is a promising phosphorus (P) fertilizer but more information on its behaviour in soil is needed to guide management practices for this slow-release fertilizer. After 20 days of incubation in two contrasting low-P soils in Petri dishes at two temperatures, the Olsen-P concentrations in soil surrounding struvite granules were 30–122 mg kg−1, which were much lower than after amendment with monoammonium phosphate (MAP) (435–1063 mg kg−1). Olsen-P concentrations further from the granule showed that MAP fertilized a larger volume of soil than struvite. Thus, the fertilizing effect of struvite may be very localized in soil.

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