Current studies show limited success. Weeds Problem weeds include broadleaf weeds such as ragweed and pigweed, annual grasses, and perennials such as bermudagrass and yellow nutsedge. Field rotation and mechanical cultivation are practiced. These products can cause some phytotoxicity. Outlook Crop breeding continues to provide improved cultivars.
Pesticides are essential to sustain production.
Use is based on scouting, pest presence, and marked quality expectations. This effort is supported by the South Texas Onion Committee, and other commodity groups. Dr. Dudley Smith, Texas Agricultural Experiment Station and Dr. Juan Anciso, Texas Agricultural Extension Service prepared these reports August 2000 using information from numerous sources. The information given herein is for educational programs only. Reference to commercial products or trade names is made with the understanding no discrimination is intended and no endorsement by the Texas Agricultural Extension Service and the Texas Agricultural Experiment Station is implied.