I.IPM of Cotton 3.Control of square and boll stages Major Pests: Cotton bollworm:Helicoverpa armigera; Cotton aphids:Aphis gossypii; Cotton red spider mites; Pink bollworm:Pectinophora gossypiella. 3. Control of square and boll stages Major Pests: zCotton bollworm: Helicoverpa armigera ; zCotton aphids: Aphis gossypii ; zCotton red spider mites; zPink bollworm: Pectinophora gossypiella . Ⅰ. IPM of Cotton IPM of Cotton