PT - JOURNAL ARTICLE AU - C.H. Gilliam AU - E.M. Smith TI - Sources and Symptoms of Boron Toxicity in Container Grown Woody Ornamentals AID - 10.48044/jauf.1980.051 DP - 1980 Aug 01 TA - Arboriculture & Urban Forestry (AUF) PG - 209--212 VI - 6 IP - 8 4099 - http://auf.isa-arbor.com/content/6/8/209.short 4100 - http://auf.isa-arbor.com/content/6/8/209.full SO - JOA1980 Aug 01; 6 AB - 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.