ABSTRACT
Management intensity on rangelands in the western United States has increased significantly in recent years. This chapter reviews the state-of the-art as it relates to predictive insect phenology modeling on rangelands. It presents a general predictive phenology model for use with rangeland grasshoppers. The chapter explains grasshopper phenology examples, the major points and model development pertain to many rangeland pest insects and plants. Due to the importance of predicting the seasonal occurrence of insect pests, there have been a large number of studies devoted to this topic. It is no surprise that high value systems such as row crops and orchards were among the first to have comprehensive phenology models as central components to integrated pest management activities. In spite of phenology modeling done in other pest systems, there is a paucity of predictive development models for rangeland grasshoppers.
