Abstract Treatments were applied on 24 Jul using a CO2 powered backpack sprayer cahbrated to deliver 9.9 gal of finished spray per acre through 8001 nozzle tips at 40 psi. The crop had been planted on 3 Jun on 38 inch row spacing. Plots were 8 rows wide × 50 ft long, arranged in a randomized complete block design with 4 replications. Counts were made at 3 and 6 DAT by examining 4 squares/plant, 25 plants per plot. A total of 0.7 inches of rain fell on the plots prior to the 3 DAT count.