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Yield data from a highbush blueberry planting established in 1993 at the Univ. of Kentucky Research and Education Center, Princeton, Ky., was collected over a 5-year period for eight cultivars. The economic impact of yield of each cultivar was calculated for each cultivar using a net present value model based on prevailing market prices and costs of production. These returns were compared across cultivars and an assessment of the economic potential for Kentucky growing conditions was considered. `Duke' and `Sierra' produced the most fruit over the 5-year period of this study. `Duke' was also the earliest ripening cultivar in the planting, with 14.3% of `Duke's fruit ripening during the first week of June. Sunrise also ripened early, with 7.7% of its fruit ripening during the first week of June. Picking for the other cultivars (`Sierra', `Bluecrop', `Blue Gold', `Toro', `Nelson', and `Patriot'), began during the second week of June and was finished for all cultivars by the end of the fourth week of June. An exception was `Nelson', which was picked through the first week of July. Despite relatively low yields observed in the first year of production, `Duke' had the highest net present values for the assumed 12-year life of the planting. The ranking of the other seven cultivars from highest to lowest in terms of their respective net present values was: `Sierra', `Blue Gold', `Bluecrop', `Toro', `Nelson', `Sunrise', and `Patriot'.

Yield and Economic Return Estimates for Eight Blueberry Cultivars Grown in Kentucky