Adaptability and Performance Evaluation of Coffee (coffea arabica l.) Varieties on Growth, Yield and Assosiation of Traits at Mid Highland Area of Western Ethiopia

摘要

The bases of the idea to conduct this field experiment was the uses of the coffee and the suitable agro-ecology of mao-komo special distinct area, which have relatively the same ecology with potential coffee producing area of western wellega. To identifying adaptable coffee varieties that could exhibit higher yield to maximize coffee production and productivity to the environments of mao-komo special distinct, western Ethiopia, in order to diversify their production and to maximize the income of the farmers in the area. Based on this fact, a field experiment was conducted using six released coffee varieties, arranged with a randomized complete block design with three replicates to select varieties which could exhibit relatively better performance at the area. Those varieties were planted at a spacing of 2 m by 2 m between plants and rows, respectively and were evaluated for yield and yield components. They were grown with shade of Susbaniasusben. From the evaluated varieties it was noted that parameters as plant height, height up to primary branch, internodes length on main stem, canopy diameter, clean coffee yield had significant difference (p0.05) among the varieties and the highest clean Coffee yield (1392.9, 1338.5 and 1100 Kg ha~(-1)) was scored by the 75227, 7440 and F59 varieties respectively. On the contrary 74110 exhibited least mean yields of 860.1 Kg of clean coffee per hectare. Based on the yield performance 75227 and 7440 varieties were recommended to producers of coffee at Mao-komo area and demonstration needs to be investigated.