29
Table 1 Effect of tillage method on yields (kg ha
−1
) of maize, teff and wheat in Ethiopia
Crop
Site
Soil
Conventional
tillage (CT)
Minimum
tillage
Minimum tillage
with mulch
Zero
tillage
Raised
bed
Source
Maize
Ziway
Loamy sand/
sandy loam
5787
4828
3722
Sime et al. (2015)
Maize
Melkassa
Loamy sand/
sandy loam
5888
5202
4087
Sime et al. (2015)
Maize
Bako Tibe
Nitisol, sandy
loam/loam
3250
3425
Zerihun et al.
(2014).
Maize
Different soil
types
4525
4990
Ito et al. (2007)
Maize
Western Ethiopia,
Bako Tibe
Nitisol, silty
clay
5768
6073
6473
Tolessa et al.
(2007)
Yield change %
compared
to CT – Maize
−4.0
−24.8
Teff
Gare Arera
Nitisol
871
829
725
Tulema et al.
(2008)
Teff
Gare Arera
Vertisol
1494
1583
1427
1644
Tulema et al.
(2008)
Teff
Different soil
types
1100
1187
Ito et al. (2007)
Teff
Gumselasa
Vertisol
1173
678
Oicha et al.
(2010)
Teff
Mekelle
Cambisol (clay
loam)
760
723
Habtegebrial
et al. (2007)
Teff
Adigudem,
Tigray
1290
1240
1100
Areya et al.
(2016)
(continued)
The Prospects for Conservation Agriculture in Ethiopia