The effectiveness of seven sequential spray schedules of insecti­cides on the percentage reduction of bollworms population in cotton fields and their additional effect on the population of four sap sucking pests was studied in 1 995 and 1996 seasons. Results indicated the su­perior activity of two schedules including 3 sprays against the target pests: (Catabron followed by Kindo/Polo or Cymbush/Applaud then Lar­vin) and (Empire or Merlin followed by Larvin then Kindo or Cymbush).