Dimilin is an inexpensive insect growth regulator which has provided effective control of velvet bean caterpillar on soybeans and provided suppression of other caterpillar pests. Dimilin applied at higher rates have provided effective control of soybean loopers and less damaging to beneficial insect populations than some classes of chemicals. Foliar application of boron to soybeans has been shown at times to increase yields in some southern states. Preliminary studies in Alabama have shown that foliar applications of Dimilin plus boron did not increase soybean yields in the absence of insects. Additional information is needed about the effects of Dimilin used alone and in combination with...