Effects of pH Level and Nitrogen Source on Elemental Leaf Content of ‘Tifblue’ Rabbiteye Blueberry1

Abstract

Abstract Leaf contents of N, P, Ca, Mg, Mn, and Fe were highest in plants fertilized with (NH4)2SO4 in a sand culture study conducted with 2-year-old ‘Tifblue’ rabbiteye blueberry (Vaccinium ashei Reade) plants. Nitrogen sources caused no differences in leaf uptake of Al, Zn, B, Cu, and K. Amounts of applied S and Na and leaf content of these elements were positively correlated. Leaf mineral content was not influenced by pH levels from 3.5 to 7.5. Shoot length and number of flower buds were not affected by pH, but both were highest for plants fertilized with (NH4)2SO4.