 |
| Titel |
Does Jatropha curcas L. show resistance to drought in the Sahelian zone of West Africa? A case study from Burkina Faso |
| VerfasserIn |
P. Bayen, T. K. Sop, A. M. Lykke, A. Thiombiano |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1869-9510
|
| Digitales Dokument |
URL |
| Erschienen |
In: Solid Earth ; 6, no. 2 ; Nr. 6, no. 2 (2015-05-21), S.525-531 |
| Datensatznummer |
250115448
|
| Publikation (Nr.) |
 copernicus.org/se-6-525-2015.pdf |
|
|
|
|
|
| Zusammenfassung |
| Land degradation is an environmental problem which weakens
agro-sylvo-pastoral productivity in sub-Saharan Africa. The most common
manifestation of land degradation is the appearance of denuded land. We
carried out an experiment to test the effect of three soil and water
conservation techniques on survival and growth of Jatropha curcas seedlings transplanted
onto two completely denuded lands in the Sahelian and Sudanian zones of
Burkina Faso. We implemented an experimental design with three replicates
per restoration technique. A total of 174 seedlings were planted in each
study site. The results showed that the soil water content varied according
to the restoration technique used (df = 2; F = 53.21; p < 0.00) as well
as according to study site (df = 1; F = 74.48; p < 0.00). Soil water
content was significantly lower in the Sahel than in the Sudanian zone.
Seedling survival rate varied significantly according to technique used
(df = 2; F = 8.91; p = 0.000) and study site (df = 1; F = 9.74; p = 0.003). Survival
rate, diameter and seedling height were highest at the Sudanian site. At the
Sahelian site, all seedlings died 2 years after establishment. These
results suggest that J. curcas is unsuited to denuded land in the Sahelian zone. Most
of the plants died in the Sahel between April and May, which is the peak of
the dry season; this may be an indication that J. curcas may not be as
drought-resistant as suggested by the prolific literature which has reported
on diverse claims surrounding this plant. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|