Genotype X Environment Interaction and Yield Stability in Early-Maturing Cowpea (Vigna unguiculata (L.) Walp.) Landraces in Ethiopia
Table 1
Description of the test environments.
Environments
Soil type
Altitude (masl)
Average rainfall (mm)
Temperature (oC)
Geographical location
Min
Max
Latitude (N)
Longitude (E)
Sekota
Vertisol
1850
789
12.9
32.9
12° 14′
38o 30′
Kobo
Vertisol
1450
673.4
13
34
12° 8′
39° 18′
Sirinka
Vertisol
1880
876
13.6
27.3
11° 08′
39° 28′
Melkassa
Andosol
1500
763
14
24.8
8° 30′
39° 21′
Miesso
Vertisol
1332
787
14.9
28.2
9° 28′
38° 08′
Babile
Spodosols
1650
671
15.5
28.1
9° 30′
42° 21′
Source: the Melkassa Agricultural Research Center (MARC), Sirinka Agricultural Research Center (SARC), and Sekota Dry Land Agricultural Research Center (SDARC).
