TY - JOUR AU - Haas, A. R. C. AU - Brusca, Joseph N. TI - Leaf malady of avocado trees: Leaves of trees of several varieties on various rootstocks seriously affected when placed under glasshouse conditions JF - California Agriculture JO - Calif Agr Y1 - 1957/10/01 VL - 11 IS - 10 SP - 14 EP - 15 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v011n10p14 AB - Leaves of seedling avocado trees grown under glasshouse conditions—in cultures of silica sand or soil—have occasionally shown certain symptoms of nutritional deficiency.