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1 October 2009 Degree-Day Requirements for Eight Economically Important Grasshoppers (Orthoptera: Acrididae) in Nebraska Using Field Data
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Abstract
The timing of application for the management of rangeland grasshoppers ( Orthoptera: Acrididae) is critical, especially as insecticides become more specialized and the use of Insect Growth Regulators becomes more widespread. The general seasonal occurrence of adults of many grasshopper species has been well documented; however, their appearance varies widely between years. We analyzed sweep samples collected over the western two thirds of Nebraska from a 3-yr period and noted the occurrence of adults by region for eight species of rangeland grasshoppers. We analyzed occurrence based on degree-day accumulations for the region and developed estimates of degree-day requirements for these species. Because these grasshopper species are common rangeland pests, degree-day requirements to reach adulthood should improve the effectiveness of grasshopper treatment programs over a large geographic area.
© 2009 Entomological Society of America
Mathew L. Brust, W. Wyatt Hoback and Robert J. Wright "Degree-Day Requirements for Eight Economically Important Grasshoppers (Orthoptera: Acrididae) in Nebraska Using Field Data," Environmental Entomology 38(5), (1 October 2009). https://doi.org/10.1603/022.038.0521
Received: 4 August 2008; Accepted: 1 June 2009; Published: 1 October 2009
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