Table 3: Stability (expressed by ecovalence) of grain yield of individual cowpea varieties and their possible mixtures grown at NaSARRI, Serere, Kikota, and Kogili villages in Uganda during the first cropping season of 2008.

TreatmentMean leaf
DM yield (g/m2)
Ecovalence value Mean grain yield_H (g/m2)Ecovalence value Mean grain yield_NH (g/m2)Ecovalence value

A3.70.6734.7894.8428.969.90
B6.32.1528.252.3836.7104.82
C6.70.7717.912.5025.584.25
D4.65.0312.165.6421.044.16
Mean5.32.1623.3256.3428.075.78
E2.41.0116.528.0918.828.02
F4.10.2820.478.3816.433.38
Mean3.30.6518.553.2417.630.70
A + B4.60.1114.763.1425.47.18
A + C5.50.7423.35.7122.835.18
A + D3.92.3512.3102.0318.851.22
B + C6.71.1519.711.8430.346.65
B + D5.90.0621.54.4523.466.29
C + D6.61.4421.014.7225.226.33
Mean5.50.9818.833.6524.338.81
A + B + C5.60.2616.718.6427.730.83
A + B + D5.20.3625.142.4829.19.58
A + C + D4.70.4417.1173.0323.737.60
B + C + D5.71.5522.34.8723.0125.22
Mean5.30.6520.359.7625.950.81
A + B + C + D5.10.1522.347.6125.241.13

Overall mean ± SE 1.09 95.31 49.51

H: leaf-harvested plants, NH: non-leaf-harvested plants.