Control of Lepidopterous Larvae on Collards Interplanted with Other Vegetables, 1981

Morris Heading col lard was transplanted on May 4 at Virginia State University Randolph Farm, Chesterfield County, VA. Soil type was a Goldsboro fine sandy loam. The field plots were assembled as a randomized complete block design with 4 rows, each 10 ft long. Col lards were planted in one of these rows while squash, pepper and eggplant were planted in the remaining 3 rows. These plots were replicated 4 times with 5 ft alleys between plots, col lards were treated 2 weeks after planting with a piston pump sprayer mounted with a single hollow cone nozzle. Spray solutions were prepared at the rate of 100 gallons/acre. Spraying was initiated on May 20 and was continued at biweekly intervals thereafter until a total of 5 sprayings were completed. The first larval counts were taken 2 weeks after spraying and subsequently at biweekly intervals. A foliar damage rating was conducted on Jul 13. Three plants were sampled from each treatment during each sampling which peceded 1 or 2 days before spraying.