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  • Author or Editor: G. S. Howell Jr. x
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Abstract

Environmental and phenological factors considered potential components of flower bud hardiness of highbush blueberry (Vaccinium australe Small) were regressed against hardiness (T50). Three multiple regression equations were derived from 1 year’s hardiness and component data on 7 commercial highbush cultivars. Factors considered in the models were air temperature, photoperiod, bud dry weight, bud moisture content, bark color, date of leaf drop and pollen tetrad formation in the field and time to 50% flowering. The standard deviations of the estimated T50 values from the actual T50’s were 1°C or less.

Open Access