last final thesis of umer

variety. This result was in conformity with that of Rao (1980) who reported that early maturing
legume varieties could lead to increased productivity of the cereal component. The yield reduction
due to 100% population of variety Bole might be due to its late maturity. In line with this result,
Davis and Garcia (1983) reported that maize yield was reduced by 17% when intercropped with
the most competitive common bean cultivars. With regard to cropping system , sole maize gave
higher yield (3189 kg/ha) than intercropped maize (2210 kg/ha) (Table8).This result in line with
the findings of Tamado and Eshetu (2000), Yesuf (2003) and Dechasa (2005) who reported that
yield of sole cropped sorghum was significantly higher than intercropped sorghum.
Table 8.Interaction effect of the intercropped cowpea varieties and plant populations on grain
yield (kg ha -1 ) of maize.
Population of cowpea
50% 75% 100%
Cowpea varieties Kenketi 3184 d 3070 d 2262 c
Black eye bean 2338 c 2272 c 1940 bc
Bole 1957 bc 1597 ab 1271 a
Intercrop
Sole crop
Variety x Density
2210 a
3189 b
Cropping system
LSD0.05 225.5 760
CV (%) 5.75 17.62
NS = non-significant, CV (%) = coefficient of variation in %, LSD = least significant difference
at 5% level of significance , Means in column and followed by the same letters are not significantly
different at 5% level of significance according to LSD test.
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