Research on hand applied PBW-ROPE, a high rate gossyplure dispenser manufactured by shin-Etsu Chemical Industry, LTD., Tokyo, Japan for control of pink bollworm (Pectinophora gossypiella Saunders) were conducted in desert cotton production valleys of Southern California. Fields in the Imperial and Coachella Valleys were treated with one of three systems: Control with conventional insecticides (no phenomone) control with conventional phenomone (insecticide as needed), or control with PBW-ROPE (insecticide as needed). All fields in the Coachella Valley were treated with PBW-ROPE. In the Imperial Valley, moth populations were monitored in fields under study during the season using four delta traps containing 1 mg gossyplure baits and 2 traps in the Coachella Valley. Boll samples were taken twice weekly from susceptible bolls through August. PBW-ROPE dispensers were applied at pin square in Coachella and during squaring in the Imperial valley at a rate of approximately 1,000 dispensers containing 78g AI/ba. Selected fields in the Imperial Valley received a second application 6 to 8 weeks later. Pink bollworm control in the Coachella Valley was excellent, but was highly variable in the Imperial Valley where population pressure was greater and when the rope was applied after larval reproduction was present in the field.