A PRELIMINARY REPORT ON THE INTEGRATED CONTROL OF BACTROCERA DORSALIS IN CARAMBOLA ORCHARD

With the reforming planfing system and the increasing of foreign trade, the oriental fruit fly Bactrocea dorsalis, Hendel has become a serious insect pest in Guangzhou since record. The oriental fruit fly is the most important insect pest of commercial fruilts such as carambola, guava and mango et al,its occurrence in Guangzhou should be paid the most efforts to its control. Research work has been conducted on the population dynamic, integrated control strategies in carambola orchard. Results showed that the oriental fruit fly population characterized with the two high peaks, one in June, and another in August in Guangzhou area . Sixty traps per hectare have been set using poisoned methyl eugenol as a bait to attract and kill the male . Based on the density of monitoring population, suitable control strategies were suggested to control the pest by using insecticide before the population high peak, breeding chicken in the carambola orchard to feed on the pupae and larvae. using bagging to protect the fruits. The field tests were carried out in three carambola orchards situated in Guangzhou suburban area from the year2001 to 2002. The results showed that the damage rate of malaysia species of carambola was 1.7-5.5% , and local species of carambola was 23-35.2% respectively in control orchard. In those without control , the damage rate of malaysia species of carambola was 94%, local species of carambola was 74.5%.