Release characteristics and control of nitrogen,phosphate, organic matter from spent mushroom compost amended soil in a column experiment |
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| Affiliation: | 1. Department of Crop Sciences and Agroforestry, Faculty of Tropical AgriSciences, Czech University of Life Sciences Prague, Kamýcka 129 Prague 6, Suchdol 16500, Czech Republic;2. Departamento de Producción Agraria, Escuela Técnica Superior Ingenieros Agrónomos, Universidad Politécnica de Madrid, Avd. Complutense s/n, E-28040 Madrid, Spain;3. Department of Soil Science and Soil Protection, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamycka 129 Prague 6, Suchdol 16500, Czech Republic |
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| Abstract: | Spent mushroom compost (SMC) is a co-product of edible mushroom which contains abundant nutrients including organics, nitrogen (N) and phosphorous (P). This study is related to the release potential of nitrogen, phosphate and organic matter from SMC amended soil in column-based experiments. Results showed that due to SMC application, NH4+–N and NO3−–N concentrations in leachate decreased by 92.5% and 76.3%, respectively, while EC and CODCr concentrations increased by 84.2% and 481.9%, respectively, as compared to chemical fertilizers. Moreover, a minor loss of TNcum (65%) and TPcum (almost equal value) exhibited good nutrient retention capacity. Leaching test results demonstrated that the mixed application of SMC and chemical fertilizers could alleviate excessive CODCr level in SMC leachate. The release process of nutrients in SMC amended soil could be described by first/first order mixed model, indicating that nutrients leached from SMC follow a two-stage pattern. |
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| Keywords: | Spent mushroom compost Column test Nitrogen Phosphate Organic matter |
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