Abstract
<abstract> <sc><bold>Abstract.</bold> </sc>A pilot project was conducted to evaluate the feasibility of aerially spraying buffelgrass (Cenchrus ciliaris) with glyphosate in the Sonoran Desert of Arizona. Buffelgrass is an invasive grass that is spreading rapidly and has catastrophic ecological impacts. Spraying was conducted using a helicopter and extremely coarse drops. Blue dye was used as a deposition tracer. This work indicates that it is possible to aerially spray buffelgrass in this setting though it is difficult to get herbicide to deposit in hot, dry, unstable, midday conditions. The extremely complex, broken terrain and the small spray blocks targeted in this project are a challenge to precision application.
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