FOLIAR ELEMENTAL ANALYSIS OF SOUTHERN HIGHBUSH, RABBITEYE AND HIGHBUSH BLUEBERRIES IN THE SOUTHERN UNITED STATES

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  • 1 Dept. of Hort. and Forestry, Univ. of Arkansas, Fayetteville, AR 72701

Highbush (Vaccinium corvmbosum L.) rabbiteye (V. ashei Reade) and southern highbush (Vaccinium spp.) blueberries grown at seven locations in six southern states were sampled in 1988 and 1989 to determine foliar elemental levels among blueberry cultivars and types. Across locations, elemental levels of N, P, K, Ca, Mg, S, Fe, Mn, Zn, Cu and Al were similar for highbush and southern highbush types. Rabbiteye elemental levels were different from highbush and southern highbush for N, P, K, Ca, S, Mn, Cu and Al. The findings indicate that similar standard foliar levels can be used for highbush and southern highbush blueberries in determining nutritional status of plantings by foliar analysis. Rabbiteye blueberries appear to have different foliar levels, and may require species-specific standards for nutritional monitoring of plantings.