Publication Date
1993
Description
Ultra low volume (ULV) aerial application of malathion at 0.58 I/ha is the common method of rangeland grasshopper control in the USA. Aircraft often are unavailable or too expensive for treating small infestations; therefore, air-assist ground equipment was adjusted 10 apply the ULV rate from a small truck. In winds of 2.2 m/sec or greater, control with the ground equipment was equivalent to that expected from aircraft. The low spray volume, low sprayer cost and use of a small truck have increased the benefit/cost ratio. Using results from this research and site-specific estimates of control costs and forage value, the land manager can use the Torell & Huddleston (1987) model for assessing the economics of rangeland grasshopper control. The grasshopper density at which control is economical may vary from ranch to ranch and from year lo year,
Citation
Huddleston, E W.; Sanderson, R; Torell, L A.; Davis, J H.; and Watts, J G., "Costs and Benefits of Controlling Grasshoppers on Rangeland" (2024). IGC Proceedings (1993-2023). 12.
https://uknowledge.uky.edu/igc/1993/session22/12
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Costs and Benefits of Controlling Grasshoppers on Rangeland
Ultra low volume (ULV) aerial application of malathion at 0.58 I/ha is the common method of rangeland grasshopper control in the USA. Aircraft often are unavailable or too expensive for treating small infestations; therefore, air-assist ground equipment was adjusted 10 apply the ULV rate from a small truck. In winds of 2.2 m/sec or greater, control with the ground equipment was equivalent to that expected from aircraft. The low spray volume, low sprayer cost and use of a small truck have increased the benefit/cost ratio. Using results from this research and site-specific estimates of control costs and forage value, the land manager can use the Torell & Huddleston (1987) model for assessing the economics of rangeland grasshopper control. The grasshopper density at which control is economical may vary from ranch to ranch and from year lo year,
