Abstract
Abstract ‘Early Round Dutch’ variety cabbage was direct seeded in single-row beds with 40-inch centers in a Willacy fine sandy loam soil at the Texas Agricultural Experiment Station, Weslaco, Tex. Plots measured 55 ft by 2 rows and were bordered by 1 row of grain sorghum. Treatments were replicated 5 times in randomized complete block design. Spray applications were applied by tractor-mounted CO2-powered boom calibrated to deliver 20 gal/acre at 60 psi operated at 3 mph. On 17 Nov, several hours after spray applications, 2 plants/plot were caged with cardboard cartons with removable screen tops. Each caged plant was inoculated with 10 third-instar BAW from a laboratory colony. On 23 Nov, cages were removed and all living BAW were counted.
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