Abstract Six tests were conducted to examine selected insecticides for soybean looper control. In Test I at Natchitoches, La., plots measuring 50 ft × 8 rows (36 inch row spacing) were arranged in a randomized complete block design (RCBD) with 4 replications. Insecticides were applied on 24 Aug to R6 growth stage Delta Pine 415 soybeans with a CO2-pressurized backpack sprayer calibrated to deliver 15 gal/acre at 21 psi through 8003 flat fan tips. Insecticides were evaluated by taking 2, 25 sweep samples/plot (15 inch diam sweep net) at 2 and 7 DAT. In Test II, test plots at Locust Ridge, La., measuring 50 ft × 8 rows (40 inch row spacing) were arranged in a RCBD with 4 replications. Application equipment and posttreatment sample interval were the same as in Test I. Insecticides were applied on 29 Aug to late R6 growth stage Delta Pine 105 soybeans. In Test III at the Northeast Research Station, St. Joseph, La., plots measuring 24 × 50 ft (7 inch row spacing) were arranged in a RCBD with 4 replications. Insecticides were applied with a tractor-mounted boom and compressed air system calibrated to deliver 10 gal/acre through 8001 flat fan tips on 9 Sep to R5 growth stage, drill-planted Davis soybeans. Insecticide evaluation was performed as in Experiment I. In Test IV at Northeast Research Station, St. Joseph, La., plots measured 65 ft × 8 rows (40 inch row spacing). Application equipment, experimental design, replication number, and sample interval were the same as in Test III. Insecticides were applied on 31 Aug to R6 growth stage Asgrow 5980 soybeans. In Test V and VI at Hamburg, La., plots measured 45 ft × 8 rows (30 inch row spacing). Application equipment, experimental design, replication number, and sample interval were the same as in Test I. Insecticides were applied on 7 Sep to R5 growth stage Terra Vig 708 soybeans.