Figure 3-12. Backpack sprayer and duster.
Section II. AERIAL DISPERSAL OF INSECTICIDES
Aerial dispersal has its advantages and limitations. Aerial dispersal can cover a
large area quickly, reaching breeding sources that are otherwise inaccessible. The
Army, however, refrains from using aerial dispersal except under dire circumstances
because of the hazards involved in the possible poisoning of nontarget organisms. The
following factors should be considered when deciding whether or not to conduct aerial
a. Wind. Aerial dispersal is most accurately controlled when there is little (less
than 3 mph) or no wind. For practical considerations, any wind greater than 10 miles
per hour should be considered excessive.
b. Temperature. The most favorable condition of temperature for aerial
dispersal is what is commonly referred to as a lapse condition. This is a normal