ON THE DYNAMICS OF COTTON BOLL FORMATION AND OPTIMUM CONTROL TIME OF PINK BOLLWORM APPLICATION OF FUZZY MULTIFACTORIAL EVALUATION TO THE FORECASTING OF COTTON PINK BOLLWORM(PECTINOPHORA GOSSYPIELLA SAUNDERS) NEWLY HATCHED LARVAE FOR MONITORING INSECTICIDE RESISTANCE IN THE PINK BOLLWORM STUDIES ON ECONOMIC THRESHOLD FOR PINK BOLLWORM ON COTTON IN HENAN PROVINCE FIELD MONITORING FOR INSECTICIDE RESISTANCE IN PINK BOLLWORM MOTH(LEPIDOPTERA:GELECHIIDAE)WITH SEX PHEROMONE TRAPS