| |
Web URL(s): | https://dl.sciencesocieties.org/publications/jeq/articles/33/1/192 Last checked: 11/07/2016 Access conditions: Item is within a limited-access website https://dl.sciencesocieties.org/publications/jeq/pdfs/33/1/192 Last checked: 11/08/2016 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Alfaro, Marta A.;
Gregory, Peter J.;
Jarvis, Stephen C. |
Author Affiliation: | Alfaro: National Institute for Agricultural Research (INIA), Remehue Research Station, Osorno, Chile; Gregory: Department of Soil Science, The University of Reading, Whiteknights, Reading, Berks, United Kingdom; Jarvis: Institute of Grassland and Environmental Research (IGER), North Wyke Research Station, Okehampton, Devon, United Kingdom |
Title: | Dynamics of potassium leaching on a hillslope grassland soil |
Section: | Landscape and watershed processes Other records with the "Landscape and watershed processes" Section
|
Source: | Journal of Environmental Quality. Vol. 33, No. 1, January/February 2004, p. 192-200. |
Publishing Information: | Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
# of Pages: | 9 |
Keywords: | TIC Keywords: Potassium; Grasslands; Slope surface; Leaching; Nitrogen; Fertilization; Application rates; Drainage; Tile drainage
|
Abstract/Contents: | "There have been only a few studies of potassium (K) losses from grassland systems, and little is known about their dynamics, especially in relation to nitrogen (N) management. A study was performed during the autumn and winter of 1999 and 2000 to understand the effects of N and drainage on the dynamics of K leaching on a hillslope grassland soil in southwestern England. Two N application rates were studied (0 and 280 kg N ha-1 yr-1), both with and without tile drainage. Treatments receiving N also received farmyard manure (FM). Higher total K losses and K concentrations in the leachates were found in the N + FM treatments (150 and 185% higher than in 0 N treatments), which were related to K additions in the FM. Drainage reduced K losses by 35% because of an increase in dry matter production and a reduction in overland and preferential flow. The pattern of change in K concentration in the leachates was associated with preferential flow at the beginning of the drainage season and with matrix flow later in winter, and was best described by a double exponential curve. Rainfall intensity and the autumn application of FM were the main determinants of K losses by leaching. The study provided new insights into the relationships between soil hydrology, rainfall, and K leaching and its implications for grassland systems". |
Language: | English |
References: | 28 |
See Also: | Other items relating to: Potassium |
Note: | Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Alfaro, M. A., P. J. Gregory, and S. C. Jarvis. 2004. Dynamics of potassium leaching on a hillslope grassland soil. J. Environ. Qual. 33(1):p. 192-200. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=93054 |
| If there are problems with this record, send us feedback about record 93054. |
| Choices for finding the above item: |
| Web URL(s): https://dl.sciencesocieties.org/publications/jeq/articles/33/1/192 Last checked: 11/07/2016 Access conditions: Item is within a limited-access website https://dl.sciencesocieties.org/publications/jeq/pdfs/33/1/192 Last checked: 11/08/2016 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: S 900 .J6 |
| Find from within TIC: Digitally in TIC by record number. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |