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Estimating dissolved reactive phosphorus concentration in surface runoff water from major Ontario soils.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Wang, Yong Tai Zhang, Tiancheng Hu, Qi Chun Tan, Choy Soon O'Halloran, Ivan P. Drury, C. F. Reid, D. Keith Ball-Coelho, B. R. Lauzon, Jérôme De Reynolds, William D. Welacky, Tom W. |
| Copyright Year | 2010 |
| Abstract | Phosphorus (P) loss from agricultural land in surface runoff can contribute to eutrophication of surface water. This study was conducted to evaluate a range of environmental and agronomic soil P tests as indicators of potential soil surface runoff dissolved reactive P (DRP) losses from Ontario soils. The soil samples (0- to 20-cm depth) were collected from six soil series in Ontario, with 10 sites each to provide a wide range of soil test P (STP) values. Rainfall simulation studies were conducted following the USEPA National P Research Project protocol. The average DRP concentration (DRP30) in runoff water collected over 30 min after the start of runoff increased (p < 0.001) in either a linear or curvilinear manner with increases in levels of various STPs and estimates of degree of soil P saturation (DPS). Among the 16 measurements of STPs and DPSs assessed, DPS(M3) 2 (Mehlich-3 P/[Mehlich-3 Al + Fe]) (r2 = 0.90), DPS(M3)-3 (Mehlich-3 P/Mehlich-3 Al) (r2 = 0.89), and water-extractable P (WEP) (r2 = 0.89) had the strongest overall relationship with runoff DRP30 across all six soil series. The DPS(M3)-2 and DPS(M3)-3 were equally accurate in predicting runoff DRP30 loss. However, DPS(M3)-3 was preferred as its prediction of DRP30 was soil pH insensitive and simpler in analytical procedure, ifa DPS approach is adopted. |
| Starting Page | 1176 |
| Ending Page | 1176 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://dl.sciencesocieties.org/publications/jeq/pdfs/39/5-rev1/1771 |
| PubMed reference number | 21043282v1 |
| Volume Number | 39 |
| Issue Number | 5 |
| Journal | Journal of environmental quality |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | ARID1A wt Allele Bone Resorption Calibration Entity Name Part Qualifier - adopted Estimated Iron Osteoporosis, Postmenopausal Phosphorus Sensorineural Hearing Loss (disorder) Soil TNFRSF11A gene United States Environmental Protection Agency hearing impairment negative regulation of response to reactive oxygen species |
| Content Type | Text |
| Resource Type | Article |
