Mengesha - Lessons from upstream soil conservation measures to mitigate soil erosion and improve land productivity in the humid highlands of northwestern Ethiopia.
Presentation delivered at the CIALCA international conference 'Challenges and Opportunities to the agricultural intensification of the humid highland systems of sub-Saharan Africa'. Kigali, Rwanda, October 24-27 2011.
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Mengesha - Lessons from upstream soil conservation measures to mitigate soil erosion and improve land productivity in the humid highlands of northwestern Ethiopia.
12. Means in a column followed by the same letter are not statistically different at p0.05
13. Means in a column followed by the same letter are not statistically different at p0.05
14. Means in a column followed by the same letter are not statistically different at p0.05
15. Means in a column followed by the same letter are not statistically different at p0.01
16. Means in a column followed by the same letter are not statistically different at p0.05
17. Means in a column followed by the same letter are not statistically different at p0.05
18. Effect of local bund (1985-2010)
on physico-chemical
properties of soil at Anjeni catchment
Bulk
Organic Total Density
Treatment Mater Nitrogen Available P (gm/cm3)
Loss 1.767b 0.140b 6.734a 1.346a
Deposition 3.024a 0.202a 7.882a 1.234b
19. Effect of topo-sequence (1985-2010) on physico-
chemical properties of soil at Anjeni catchment
Bulk
Organic Total Available Density
Treatments Matter (%) Nitrogen P (Bd)
Crust slope 2.957ab 0.176ab 6.896a 1.20c
Shoulder slope 1.420c 0.149b 7.046a 1.36a
Back slope 1.986bc 0.153b 7.429a 1.30ab
Foot slope 2.091bc 0.149b 7.431a 1.25bc
Toe slope 3.784a 0.240a 8.357a 1.07d
20. Grain Yield Total Biomass
Treatment (kg ha-1) (kg ha-1)
Deposition 1077.23a 5208.3a
Middle 759.93b 4183.3b
Loss 656.19b 3491.7c
23. Downstream
Sedimentation on
≒ dams
≒ reservoirs
≒ rivers