Abstract Sweet corn was planted on 10 Jun at the Eastern Shore Agricultural Experiment Station, Painter, VA. Equal sized fields of the mid-season variety ‘Alpine’ and the late-season variety ‘Silver Queen’ were planted with 3 ft row spacing. The ‘Alpine’ plots were 25 ft long and replicated 4 times in a randomized complete block design, with an untreated guard row between plots. Due to the drought in Jun, there were large areas in the ‘Silver Queen’ field with poor stands. This field, therefore, was divided into 20 ft long plots with 3 replications. Sprays were applied with a single nozzle boom backpack sprayer delivering 60 gal water/acre at 40 psi. Sprays were initiated at beginning silk in each variety. Application dates were 26, 28, and 30 Jul, 2, 4, and 6 Aug for ‘Alpine’ and 2, 4, 6, 9, 11, and 13 Aug for ‘Silver Queen’. Water temperature was 22°C and pH was 7.3. Overhead irrigation (0.5 inches water) was applied on 19, 27, and 28 Jun; 13, 14, 22, 23, and 25 Jul; an additional 0.5 inch water was applied on 5 Aug on the ‘Silver Queen’. Evaluation criteria consisted of hand harvesting 15 random ears/plot in the ‘Alpine’ and 10 random ears/plot in the ‘Silver Queen’. These ears were graded marketable (no damage or minor tip damage on one side) or worm damaged, and any worms found were identified to species.