TY - JOUR AU - Haas, A. R. C. AU - Brusca, Joseph N. TI - Valencia orange fruit size: Affected by the relation of calcium to magnesium as demonstrated by tests with nutrient solutions JF - California Agriculture JO - Calif Agr Y1 - 1954/07/01 VL - 8 IS - 7 SP - 13 EP - 14 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v008n07p13 AB - The Valencia orange fruit size problem can not be ascribed to one and the same single cause in all citrus areas.