Organic Phosphorus Can Make an Important Contribution to Phosphorus Loss from Riparian Buffers
| Autor: | Lawrence G. Berry, Andrew N. Sharpley, Rosalind J. Dodd |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
lcsh:GE1-350
geography geography.geographical_feature_category Phosphorus lcsh:S Soil Science Organic phosphorus chemistry.chemical_element 04 agricultural and veterinary sciences 010501 environmental sciences Management Monitoring Policy and Law 01 natural sciences lcsh:Agriculture chemistry Environmental chemistry 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Agronomy and Crop Science lcsh:Environmental sciences 0105 earth and related environmental sciences Riparian zone |
| Zdroj: | Agricultural & Environmental Letters, Vol 3, Iss 1 (2017) Agricultural & Environmental Letters, Vol 3, Iss 1 (2018) |
| ISSN: | 2471-9625 |
| DOI: | 10.2134/ael2018.01.0002 |
| Popis: | Vegetative buffer strips (VBS) and managed or unmanaged riparian zones between the edge of field and receiving watercourse are widely adopted conservation practices aimed at reducing nonpoint nutrient pollution. However, their effectiveness at decreasing phosphorus (P) loss has been mixed. This study investigated the effectiveness of a VBS and a forested riparian zone (FRZ) in decreasing P loss from pasture soils receiving swine manure and aimed to determine the potential factors controlling P release, using water extractable P (WEP) as a proxy for P loss. The inorganic WEP concentrations were significantly greater in the fertilized pasture zone soils than the VBS or FRZ soils. However, there was no significant difference between the field and riparian soils for total WEP due to increased contribution from organic WEP in these soils. Degree of P saturation, which is a function of soil test P, was a good predictor of inorganic WEP, but not organic WEP, where the variation in concentrations was better explained by variables involved in biotic P release. |
| Databáze: | OpenAIRE |
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