TY - JOUR AU - Trumble, John T. AU - Nakakihara, Henry AU - Carson, William TI - Monitoring aphid infestations on broccoli JF - California Agriculture JO - Calif Agr Y1 - 1982/11/01 VL - 36 IS - 11 SP - 15 EP - 17 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v036n11p15 AB - Samples from throughout the field provide the best picture of aphid density, but those from field borders give earliest notice of aphid migrations.