Successive generations of females, mainly wingless, are produced throughout the year. Winged migrants develop whenever overcrowding occurs or food becomes scarce. Many generations may occur per year. In many crops, natural controls often can regulate the population below economic impact thresholds. Many predators, fungus diseases, high temperatures, hard rains and damp weather reduce aphid populations.
Insecticides are the second choice for controlling aphids.
Oil sprays are used to prevent the spread of virus diseases in squash. A County Agent's Guide to Insects Important to Agriculture in Georgia. Univ. of GA, Col. Ag. Ctr., Jan. 20, 1999.