There are no commercial replacements for these products. Other commercial fungicides are used primarily for downy mildew control. Weeds Annual broadleaf weeds reduce production and hamper harvest. Pigweed, purslane, sunflower, and other weeds rob the crop of water and shade the foliage. Texas panicum and perennials such as johnsongrass and yellow nutsedge reduce yields.
Cultivation is practiced while the plants are young.
But vines over one foot long can not be tilled. Fields are rotated annually to reduce weeds and diseases. Insecticides, fungicides, and herbicides help sustain production. This effort is supported by the Texas Vegetable Association, 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.