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Effect of phosphate fertiliser addition and land slope on soil phosphate fractions
| Content Provider | Scilit |
|---|---|
| Author | Rowarth, J. S. Gillingham, A. G. Tillman, R. W. Syers, J. K. |
| Copyright Year | 1992 |
| Description | A large-scale phosphate (P) fertiliser grazing trial at Whatawhata Research Centre, North Island, New Zealand provided quantitative information on the effect of slope on changes in the forms of P accumulating, or being depleted, in the soil. Changes in the size of P fractions (Olsenextractable, water-extractable, total, inorganic, organic, easily soluble, non-occluded, occluded, and calcium-bound) were monitored on three slope groups (0–10°, 11–20°, and 31–40°) topdressed annually at five different rates of P fertiliser applied as single superphosphate (10, 20, 30, 50, or 100kg P/ha) for 4 years. Olsen P and total and inorganic soil P increased with increasing rate of fertiliser addition and decreased with increasing depth and slope. Non-occluded P was the largest inorganic P fraction and appeared to be involved in active P cycling and P transfer. In contrast, calcium-bound P was less actively involved in P cycling and appeared to accumulate as residue from fertiliser. |
| Related Links | http://www.tandfonline.com/doi/pdf/10.1080/00288233.1992.10427509?needAccess=true |
| Ending Page | 327 |
| Page Count | 7 |
| Starting Page | 321 |
| ISSN | 00288233 |
| e-ISSN | 11758775 |
| DOI | 10.1080/00288233.1992.10427509 |
| Journal | New Zealand Journal of Agricultural Research |
| Issue Number | 3 |
| Volume Number | 35 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 1992-07-01 |
| Access Restriction | Open |
| Subject Keyword | Soil Science Fertiliser Olsen P Soil P Phosphate |
| Content Type | Text |
| Resource Type | Article |
| Subject | Agronomy and Crop Science Soil Science Plant Science Animal Science and Zoology |
