 |
| Titel |
Impacts of conservation tillage on the hydrological and agronomic performance of Fanya juus in the upper Blue Nile (Abbay) river basin |
| VerfasserIn |
M. Temesgen, S. Uhlenbrook, B. Simane, P. Zaag, Y. Mohamed, J. Wenninger, H. H. G. Savenije |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1027-5606
|
| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 16, no. 12 ; Nr. 16, no. 12 (2012-12-21), S.4725-4735 |
| Datensatznummer |
250013615
|
| Publikation (Nr.) |
 copernicus.org/hess-16-4725-2012.pdf |
|
|
|
|
|
| Zusammenfassung |
| Adoption of soil conservation structures (SCS) has been low in high rainfall
areas of Ethiopia mainly due to crop yield reduction, increased soil erosion
following breaching of SCS, incompatibility with the tradition of cross plowing
and water-logging behind SCS. A new type of conservation tillage (CT) involving
contour plowing and the construction of invisible subsoil barriers using a
modified Maresha winged "subsoiler" is suggested as a means to tackle these
problems as an integral part of the SCS. We investigated the effect of
integrating the CT with SCS on the surface runoff, water-logging, soil loss,
crop yield and plowing convenience. The new approach of conservation tillage
has been compared with traditional tillage (TT) on 5 farmers' fields in a high
rainfall area in the upper Blue Nile (Abbay) river basin. Test crops were wheat
[triticum vulgare] and tef [eragrostis tef]. Farmers found
CT convenient to apply between SCS. Surface runoff appeared to be reduced under
CT by 48 and 15%, for wheat and tef, respectively. As a result, CT reduced
sediment yield by 51 and 9.5%, for wheat and tef, respectively. Significantly
reduced water-logging was observed behind SCS in CT compared to TT. Grain
yields of wheat and tef increased by 35 and 10%, respectively, although the
differences were not statistically significant apparently due to high fertility
variations among fields of participating farmers. Farmers who tested CT
indicated that they will continue this practice in the future. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|