TY - JOUR AU - Metcalf, R. L. AU - March, R. B. AU - Fukuto, T. R. TI - Study of systemic insecticides: Location and amounts of residue in plant tissues determined with aid of radio-phosphorus tracers JF - California Agriculture JO - Calif Agr Y1 - 1954/06/01 VL - 8 IS - 6 SP - 5 EP - 6 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v008n06p5 AB - The systemic insecticides – schradan – octamethyl pyrophosphoramide and demeton or Systox–O,O-diethyl O-ethyl-beta-mercaptoethyl thionphos-phate–and their derivatives have shown unusual promise for the control of mites and aphids and other sucking insects of a variety of agricultural crops.