ABSTRACT
This chapter discusses several aspects of grasshopper management on range, including a rational basis for control, between-season and within-season variation in grasshopper population dynamics, current registered tactics for grasshopper suppression, and factors that influence selection of control tactics. Rangeland in the United States is infested by a heterogeneous complex of grasshoppers that includes about 200 species. One can strive to treat economic infestations of mid-instar nymphs before serious forage destruction occurs in order to maximize protection of the current season's forage crop. On rangeland, however, economics dictate that only one treatment be applied, so it behooves the manager to gain maximum benefit from that treatment. It should be clear that integrated management of grasshoppers on rangeland will require much more sophisticated techniques for sampling and for selection of treatments than have been common in the past. R. C. Newton et al. reported the seasonal history of about 50 species of grasshoppers in Montana and Wyoming.
