TY - JOUR T1 - Sources and Symptoms of Boron Toxicity in Container Grown Woody Ornamentals JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 209 LP - 212 DO - 10.48044/jauf.1980.051 VL - 6 IS - 8 AU - C.H. Gilliam AU - E.M. Smith Y1 - 1980/08/01 UR - http://auf.isa-arbor.com/content/6/8/209.abstract N2 - Boron (B) toxicity is characterized by leaf tip yellowing and marginal chlorosis followed by leaf tip burning and premature leaf drop. Data showed that several common preplant media fertilizers are quite high in B. Boron toxicity is best avoided by proper pH balance and by avoiding micronutrient fertilizers with high levels of B. ER -