Japanese beetle populations are also kept in check by birds that feed on the beetles, and skunks and moles that eat the grubs. Grasshoppers frequently succumb to disease organisms as well as a variety of predators. Practices that promote healthy, vigorous soybean plants are effective in reducing the impact of all soybean defoliators. Soybeans grown under good conditions are remarkably tolerant of defoliation damage. Full coverage is not required when using systemic insecticides.
Complete coverage is necessary for maximum efficiency when non-systemic insecticides are used.
Drop nozzles may be needed for complete coverage if the canopy is large. This information is for educational purposes only. References to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned. This information becomes public property upon publication and may be printed verbatim with credit to MSU Extension. Reprinting cannot be used to endorse or advertise a commercial product or company.