The relative importance of some management factors to food barley production at Holetta
1997
Amsal Tarekegne (IAR, Addis Abeba (Ethiopia))
Most previous studies conducted to examine food barley production constraints were single factor experiments and unsuitable to determine the relative importance of various factors and interactions amongst these factors. A replicated 2 the power of 5 factorial experiment examined the effects of cultivar, fertilizer, weeding, fungicide, and seed dressing to food barley production under local and recommended practices at the Holetta Research Center in 1987 and 1988. Results indicate that poor soil fertility is a major constraint to food barley production followed by weed competition, then by shootfly incidence. Cultivar choice and fungicide spray appear relatively less important factors. A combination of highest level factors and interactions demonstrated the beneficial effect of combinining improved production practices in one cultural package. future research needs to give high priority to improvement of soil fertility, minimum weed competition and use of landraces to develop resistant cultivars to shootfly and diseases.
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