Pest control is one of the main production costs in cotton production. Its importance varies from 10 to 50 percent. Despite this importance few tools has been developed to help farmer to make decision. Insect management has remained a difficult task for computer-assisted decision making. Primary constraints include difficulties in integrating plant-insect systems and the determination of the role of multiple species acting simultaneously, as well as the timely collection of field data and its input into the computer system. Further, in the US cotton-growing belt, there are more than twenty other pest species associated with cotton, which can be considered key pests on a yearly basis.