Aphids on Cruciferous Crops
Identification and Management
T.-X. Liu and A. N. Sparks, Jr.
Cruciferous crops (including cabbage, collards, cauliflower, broccoli and kale) are produced throughout
much of Texas, with most commercial production in the Lower Rio Grande Valley and Winter Garden areas. At least five species of aphids are of economic importance to these crops, including the turnip aphid, Lipaphis erysimi (Kaltenbach); green peach aphid, Myzus persicae (Sulzer); poplar petiole gall aphid or cabbage root aphid, Pemphigus populitransversus Riley; cabbage aphid, Brevicoryne brassicae (Linnaeus); and cotton aphid, Aphis gossypii Glover. The turnip aphid, green peach aphid and poplar petiole gall aphid have generally been the most damaging in Texas. To properly manage aphid pests, you must know the species with which you are dealing. This publication will help you identify and manage aphids commonly found on cruciferous crops.