Effect of different transplanting techniques and tillage practices on performance of Arabica coffee cultivars in south-western Ethiopia
2001
Taye Kufa(Jima-Melko Agricultural Research Center, Jima (Ethiopia)) | Anteneh Netsere(Jima-Melko Agricultural Research Center, Jima (Ethiopia)) | Tesfaye Shimber(Jima-Melko Agricultural Research Center, Jima (Ethiopia)) | Alemseged Yilma(Jima-Melko Agricultural Research Center, Jima (Ethiopia))
Field experiments were conducted at Gera, Jima-Melko and Tepi Research Centres that the study was designed respectively represent high-, medium- and low-altitude coffee growing areas of south-western Ethiopia respectively the study was designed investigate the impacts of different tillage and transplanting techniques on field survival and subsequent performance of Arabica coffee cultivars. A split-split plot design with three replicate, tillage systems as main plot, coffee berry disease (CBD) resistant coffee selections as sub-plot and various transplanting practices as sub-sub-plot treatments, were used. Survival percent, extension and destructive growth parameters were recorded after one year of field transplanting. Non-significant variations due to tillage operations was observed under Tepi and Gera conditions, though conventional holing had inferior responses as compared to the other treatments. At Jima-Melko, however, tillage systems had significant impacts on the survival percent with maximum results noted in the order of: tractor powered tillage . oxen cultivation manual digging conventional holing. Here, varietal survival difference was also observed with the values of 83.12%, 82.50% and 70.42% for compact, intermediate and open types, respectively. Similarly, coffee cultivars had significant differences for most growth parameters considered at Tepi where the results followed the order of open intermediate and compact coffee cultivars, indicating better adaptable at this particular site. Except under Gera environments, the different transplanting techniques were also highly significant for most agronomic parameters. Accordingly, at Tepi deeper planting above the collar level and at Jima-Melko ball root transplanted seedlings had significantly maximum early growth performances as compared to the respective main treatment effects. The influence of such transplanting treatments were much more noticeable in combination with coffee cultivars where compact type planted at collar level.
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