Tewodros and Getachew
Greener Journal of Agricultural Sciences Vol. 3 (8), pp. 658-662, August 2013.
Evaluation of the Adaptability and Acceptability of Improved Cassava (Manihot esculenta Crantz) Varieties in Southwest Ethiopia
Tewodros Mulualem* and-Getachew WeldeMicheal
Jimma Agricultural Research Center, Po.Box 192, Jimma, Ethiopia.
*Corresponding Author’s Email: tewodros74 @ yahoo. com
The adaptability and acceptability of two improved and one
respective promising variety (45/72) of cassava was carried
out in Jimma, Agaro and Gera stations during 2009/2011
cropping season. The objective of the study was to test the
adaptability, acceptability of the technologies, create
awareness to the farmers and evaluate the yield potential of
the varieties by yield and farmers’ evaluation criteria. The
pooled analysis of variance showed mean square due to
varieties showed very highly significant variation (P <
0.01), root diameter(cm) and stem girth(cm) and significant
variation (P< 0.05) for number of verticals/hill, canopy
diameter (m), root length (cm), weight of above ground plant
biomass(kg) and dry matter yield (kg/plot). Highly
significant location effect on all traits, except root
diameter and stem girth, shows that these traits were highly
influenced by change in the environment. Based on the mean
data, variability in all traits over locations were varying;
ranged from 96 to 209 cm, 3-5, 102-213 cm, 23-56 cm and
1.6-2.8cm for plant height at first branch, number of
verticals/hill, canopy diameter(cm), root length(cm) and
stem girth(cm) respectively. This shows there exists
sufficient variability to develop high yielding cassava
variety for production in these districts. The pair-wise
comparison of varieties by farmers showed that Variety Kello
was selected at the first rank in all tested environments by
its merits. Qulle took the second place after variety (Kello)
in Jimma and Agaro districts and the third in Gera.
Keywords: Adaptation, Evaluation, Manihot esculenta Crantz, Participatory.
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