TY - JOUR AU - Jones, W. W. AU - Cree, Clarence B. TI - Leaf potassium: Valencia fruit size relationship shown to be variable by studies JF - California Agriculture JO - Calif Agr Y1 - 1953/11/01 VL - 7 IS - 11 SP - 10 EP - 15 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v007n11p10 AB - The value or need of potassium fertilization.—to increase Valencia orange fruit size—must be determined for each Valencia growing area because no critical level of leaf potassium can be universally assigned.