Japanese Beetle Grub Control, South Windsor, Connecticut, 1979. Four Insecticides Were Applied To A Two Year Old Stand of Kentucky Bluegrass on A Commercial Turf Farm in Aug'79. Plots for the Trial Were 3.05 × 3.05 Meters; Each Insecticide Formulation Was Replicated Four Times In A Ran-Domized Complete Block Design. Prerreatment Grub Counts, Made By Examining Twenty .021 Square Meter Soil Plugs, Were Taken On Aug 10 and The Average For The Test Area Was 176.5 First And Second Stage Larvae Per …

clear sky, light wind, air temperature 22.2°C, and the soil temperature just under the thatch layer was 20.0°C. The soil is an Agawam very fine sandy loam, with a pH of 6.0, an organic matter percent of 3.8, and a thatch layer of 1.65 cm.