Improving the prediction of fertilizer phosphorus availability to plants with simple, but non-standardized extraction techniques
| Autor: | Walter W. Wenzel, Jakob Santner, Alicia Hernandez-Mora, Olivier Duboc |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Environmental Engineering
chemistry.chemical_element Biomass 010501 environmental sciences engineering.material Raw material 01 natural sciences Phosphates Soil Alkali soil Soil pH Environmental Chemistry Fertilizers Waste Management and Disposal 0105 earth and related environmental sciences 2. Zero hunger Phosphorus Extraction (chemistry) food and beverages 04 agricultural and veterinary sciences Plants Pollution chemistry Agronomy Soil water 040103 agronomy & agriculture engineering 0401 agriculture forestry and fisheries Fertilizer recycled fertilizers circular economy compliance testing solubility agronomic efficiency |
| Zdroj: | Science of The Total Environment |
| ISSN: | 0048-9697 |
| DOI: | 10.1016/j.scitotenv.2021.150486 |
| Popis: | In the framework of the circular economy, new P fertilizers produced from diverse secondary raw materials are being developed using various technologies. Standard extraction methods (neutral ammonium citrate (NAC) and H2O) provide limited information about the agronomic efficiency of these often heterogenous new products. Here, we compared these extractions with two alternative methods: 0.5molL-1 NaHCO3 and a sink extraction driven by phosphate adsorption onto ferrihydrite (“Iron Bag”) on 79 recycled and mineral reference fertilizers. We compared their capacity to predict shoot biomass and P content of rye (S. cereale L.) grown in a greenhouse on three soils of contrasting pH with a subset of 42 fertilizers. The median extracted P (% of total P) was H2O (1%)3 (25%)3 extraction stood out as a cost-effective and reliable method to predict plant shoot biomass and P content (R2 ranging between 0.65 and 0.86 in the slightly acidic and alkaline soil). Notwithstanding, the other methods provide complementary information for a more detailed characterization of how P solubility may be impacted by e.g. soil pH, granulation, or time. The implications of this work are therefore significant for fertilizer production, regulation, and use. |
| Databáze: | OpenAIRE |
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