Foliar Sprays to Control Insects on Snap Beans, 1993

Snap beans were planted on 12 Aug at the Eastern Shore Agricultural Experiment Station, Painter, VA. Each plot consisted of a single 25 ft long row, bordered on each side by an untreated guard row, and replicated 4 times in a randomized, complete block design. Spacing was 3 ft between rows. Sprays were applied in 60 gal water/acre at 40 psi using a 3 hollow cone nozzle backpack sprayer on the following dates: 27 Aug; 1, 7, 21 and 29 Sep. Evaluation criteria consisted of counts of insect damaged pods in 50 randomly picked pods/plot on 8 Oct, and yields from the entire 25 ft row of each plot. The plots were mechanically harvested on 15 Oct. Although CEW and ECB pressure was high this year, the drought resulted in a second planting, as the first planting failed. Due to the delay in planting, pods started forming after the peak moth flights and during periods of cooler nights. These factors resulted in reduced insect pressure in this study.