The effect of clipping on growth and nutrient uptake of Sahelian annual rangelands
Summary: 1. Growth and nutrient-uptake responses of annual rangeland to defoliation were studied at 13 sandy range sites located across the Sahelian zone of Mali between 1977 and 1989. 34 clipping experiments (site-years) were conducted using identical treatment designs with respect to the timing a...
| Autores principales: | , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
1996
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/28870 |
| _version_ | 1855536524405243904 |
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| author | Hiernaux, Pierre H.Y. Turner, M.D. |
| author_browse | Hiernaux, Pierre H.Y. Turner, M.D. |
| author_facet | Hiernaux, Pierre H.Y. Turner, M.D. |
| author_sort | Hiernaux, Pierre H.Y. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Summary:
1. Growth and nutrient-uptake responses of annual rangeland to defoliation were studied at 13 sandy range sites located across the Sahelian zone of Mali between 1977 and 1989. 34 clipping experiments (site-years) were conducted using identical treatment designs with respect to the timing and frequency of clipping.
2. The effect of highly variable growing conditions (rainfall and nutrient availability) on the response to clipping was analysed through a series of regression analyses.
3. The growth response of vegetation to clipping is more related to variables associated with rainfall and growing condition than to clipping frequency. Total yields were lowered most during periods of rapid growth.
4. Nitrogen (N) and phosphorus (P) yields were not affected by growing condition while clipping consistently increased N and P yields.
5. Greater sink strength in clipped plants better explains the observed stimulation of N and P yields than does the increased nutrient availability that could result from modified soil water status after clipping.
6. The significance of these results for the ecological management of Sahelian rangelands is discussed. |
| format | Journal Article |
| id | CGSpace28870 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1996 |
| publishDateRange | 1996 |
| publishDateSort | 1996 |
| record_format | dspace |
| spelling | CGSpace288702025-11-12T11:42:04Z The effect of clipping on growth and nutrient uptake of Sahelian annual rangelands Hiernaux, Pierre H.Y. Turner, M.D. rangelands pruning growth nutrient uptake annuals defoliation grazing rain Summary: 1. Growth and nutrient-uptake responses of annual rangeland to defoliation were studied at 13 sandy range sites located across the Sahelian zone of Mali between 1977 and 1989. 34 clipping experiments (site-years) were conducted using identical treatment designs with respect to the timing and frequency of clipping. 2. The effect of highly variable growing conditions (rainfall and nutrient availability) on the response to clipping was analysed through a series of regression analyses. 3. The growth response of vegetation to clipping is more related to variables associated with rainfall and growing condition than to clipping frequency. Total yields were lowered most during periods of rapid growth. 4. Nitrogen (N) and phosphorus (P) yields were not affected by growing condition while clipping consistently increased N and P yields. 5. Greater sink strength in clipped plants better explains the observed stimulation of N and P yields than does the increased nutrient availability that could result from modified soil water status after clipping. 6. The significance of these results for the ecological management of Sahelian rangelands is discussed. 1996-04 2013-05-06T07:01:37Z 2013-05-06T07:01:37Z Journal Article https://hdl.handle.net/10568/28870 en Limited Access Hiernaux P. & Turner M.D. (1996) The effect of clipping on growth and nutrient uptake of Sahelian annual rangelands. Journal of Applied Ecology, 33(2):387-399. |
| spellingShingle | rangelands pruning growth nutrient uptake annuals defoliation grazing rain Hiernaux, Pierre H.Y. Turner, M.D. The effect of clipping on growth and nutrient uptake of Sahelian annual rangelands |
| title | The effect of clipping on growth and nutrient uptake of Sahelian annual rangelands |
| title_full | The effect of clipping on growth and nutrient uptake of Sahelian annual rangelands |
| title_fullStr | The effect of clipping on growth and nutrient uptake of Sahelian annual rangelands |
| title_full_unstemmed | The effect of clipping on growth and nutrient uptake of Sahelian annual rangelands |
| title_short | The effect of clipping on growth and nutrient uptake of Sahelian annual rangelands |
| title_sort | effect of clipping on growth and nutrient uptake of sahelian annual rangelands |
| topic | rangelands pruning growth nutrient uptake annuals defoliation grazing rain |
| url | https://hdl.handle.net/10568/28870 |
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