Evaluation of Soil Insecticide Rates on Continuous Corn in Ohio, 1995

Planting time treatments of 3 granular soil insecticide products were evaulated on reduced tilled continuous corn at the OARDC Northwestern Branch Station near Hoytville. Each of the soil insecticides was evaluated at 2 rates. A RCBD was applied with 4 replicates. Plots were 61 m (200 ft) in length and 4 rows wide with 76.2 cm (30 inch) row spacing. Treatments were applied 8 Jun at planting time using a 4 row John Deere 7000 planter equipped with Noble granular applicators. All treatments were applied as a band prior to closure by the press wheel. Stand counts were taken 18 Jul on 30.5 m (100 ft) of row. Root systems of 5 plants per plot were rated 18 Jul using the Iowa 1-6 scale. On 19 Oct, plots were machine harvested to determine yield.