Geocorid and Nabid Response to Insecticides on Soybean in Louisiana, 1993

The response of geocorids and nabids to selected insecticides used for control of soybean loopers and velvetbean caterpillars on soybeans was examined in a small plot insecticide trial at the St. Gabriel Research Station in Iberville Parish, LA. Treatments were applied to ‘Buckshot 723’ soybean in the R5 growth stage using a tractor and compressed air sprayer calibrated to deliver 93.5 liters/ha at 2.66 kg/cm2 through 8002 flat fan nozzles. Plots were 5 rows wide (0.91 m row spacing) by 15.2 m and were arranged in a RCBD with 4 replications. The test was applied 9 Sep. At 1 d pretreatment (DPT) and 2 and 7 DAT, 1 beat-net sample (30 beats per sample) was taken from each plot with a standard 38.2 cm diam sweep net. No rainfall occurred during the test period.