Control of Harlequin Bugs on Collards Interplanted with Other Vegetables, 1981

‘Morris Heading’ col lard was transplanted on May 4 at Virginia State University Randolph Farm, Chesterfield Co., 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 rmaining 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 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. Spraying was concluded on Sep 8 with a total of 9 sprayings. Adults were counted on 2 occasions in Jul and once in Sep. Three plants were sampled from each treatment during each sampling which preceded 1 or 2 days before spraying. The plants were stripped of older leaves in early Aug and a final count was taken on Sep 22.