Control of Silverspotted Skipper on York Soybeans with Soil Systemics, 1980

Soybeans were planted May 27 with a conventional 4-row unit planter (John Deere Model 71) equipped with Gandy (R) granular insecticide applicators. Except for one treatment of Furadan 10G which was applied in the furrow, all other treatments were applied in a 14 inch band over the seed furrow, behind the press wheel. Two drag chains were attached behind the press wheel of each planter. Plots consisted of 4 rows, 100 ft long with 30 inches between rows, arranged In a randomized complete block design with 4 replications. Soil was classified as a ‘Bertie’ silt loam and the soil temp at the time of planting was 86°F at the 4 inch depth. Twenty 1st to 2nd instar larvae with accompanying nest were artifically introduced into the plots by pinning them to 20 separate plants in each plot on Jun 6. The percent survival through 2 instars was recorded for each plot. Rainfall was below normal during the growing season.