Single granular applications of Nia 10242 (2,3-dihydro-2,2-dimethyl-7-benzofuranyl methylcarbamate), Temik® (2-methyl-2-(methylthio) prop ion aldehyde 0-(methylcarbamoyl) oxime and GC 6506 (dimethyl p-(methylthio) phenyl phosphate) were made to soil, and Azodrin® (3-hydroxy-N-methyl-cis-crotonamide dimethyl phosphate) was applied as a foliar spray to determine effectiveness in keeping insect populations on soybeans below economic levels. Granular applications of Nia 10242 or Temik or a foliar application of Azodrin generally were more effective when made in mid-or late August than earlier in the season. Nia 10242, applied as a side-dress granule on August 17, gave season-long control of Mexican bean beetles, Epilachna varivestis Mulsant; green cloverwonns, Plathypena scabrat (F.); velvetbean caterpillars, Anticarsia gemmatalis Hubner; southern green stink bugs, Acrosternum hilare (Say). A sidedress application of Temik on August 17 was effective throughout the season against Mexican bean beetles and stink bugs but did not give economic control of clover-worms or velvetbean caterpillars. Azodrin as a foliar spray on August 27 controlled Mexican bean beetles and velvetbean caterpillars throughout the season. stink bugs through September 21 anel a looper, Pseudoplusia includens Walker, 7 and 13 days after application. None of these materials controlled loopers or earworms 17 days after application. GC 6506 applied to the soil was not effective Increase in yield followed single g-ranular applications of Nia 10242 and Temik in 2 experiments and a foliar application of Azodrin in 1 experiment.