Effect of Lannate in Varying Volumes of Finished Spray on Control of Fall Armyworm in Late-Planted Field Corn, 1983

Field corn ‘Pioneer 3147’ was planted on 8 Jul. at the Tobacco Experiment Station, Greenville. Soil type was Emory silt loam with a 2 to 5% slope. Plots were 30 ft by four rows with 5-ft alleys between blocks. Rows were spaced 38 in. apart. Seven treatments were replicated four times in a randomized complete block design. Corn was thinned to 40 plants per 30 row ft. Lannate insecticide (0.45 lb (AD/acre) was applied in six different finished spray volumes ( 3 to 30 gal/acre) on 16 Aug. when infestation levels averaged three larvae per plant. Formulations were applied using different nozzle sizes with a 2.5 gal compressed air sprayer at a constant tank pressure of 30 lb/in2 . Dead larvae were counted on 19 Aug. and percent mortality was determined.