Comparison of Broadcast and Soil Injection Treatments of Dursban for Ant Control, 1996

This trial was conducted at Gold Star Sod Farm, Canterbury, NH. The treatments were applied on 11 Jul to 8 X 16 ft plots with 1 -ft buffers between plots. Each treatment was replicated 4 times. Turf was mowed at 2 inches. An application of Dursban solution and another of water alone given by a tractor-powered Roger’s Root Zone Injector system. Both treatments were injected 3-6 inches into the turf in a 3 X 3 inch pattern at a rate of 9 gal/1000 ft2. The broadcast Dursban was applied in water at a volume of 2 gal/1000 ft2 using a 2-wheel bicycle-type CO2 boom sprayer equipped with 4 spray heads; each head was fitted with a 50-mesh strainer and an 8004 fan-type nozzle delivered at 40 psi. Weather conditions at the time of application were as follows: air temp, 81°F; sky, clear; wind, light breeze. Soil conditions were as follows: surface temp, 91°F; at 1-inch depth, 76°F; at 2-inch depth, 73°F; texture, loam; sand, 35%; silt, 45%; clay, 20%; pH, 6.4; dry matter, 89%; moisture, 11%; organic matter, 3%; thatch depth, 1/4 inch. Anthills were counted prior to treatment, and then every 7 days for 6 consecutive weeks thereafter.