مدیریت تلفیقی کنترل کنه تارتن خرما، Oligonychus afrasiaticus (McGregore) (Acari: Tetranychidae) ، در استان بوشهر

Date palm spider mite, Oligonychus afrasiaticus (McGregore), is one of the most important pests of date palm in south of Iran. In recent years, this pest has exploded in all of date palm orchards zone especially in Bushehr province and has caused a lot of problems for date palm farming. Chemical control is the common used method for control of this pest that in addition to environmental hazards it doesn’t provides acceptable control. Thus it is necessary that were used others control methods. This study was carried out in randomized block design with 4 treatments and 3 replications. Treatments include: pruning of infested bunch + fenpyroximate insecticide .5 ml/l spray, pruning of infested bunch + fenpyroximate insecticide .5 ml/l + volck oil spray, pruning of infested bunch + volck oil spray + bunches cover and control (without treatment). Date fruits were sampled in 1 day before treatment and 2,7and 14 days after treatment. 15 fruits from each treatment were randomly collected and placed in plots contain 75 % alcohol and transported to the laboratory. Mites were counted with stereomicroscope and recorded. Percent of mortality was calculated with Henderson- Tilton formula and analyzed with SAS software. The results showed that there were no significant differences between treatments. Means of mortality at 2 days after treatment were 12.18, 46.22 and 41.83 % and 7 days after treatment were 45.26, 51.23 and 47.21 % and 14 days after treatment were 32.52, 55.05 and 48.13% respectively. The highest mortality percent of date spider mite was observed in treatment of pruning of infested bunch+ fenpyroximate insecticide .5 ml/l + volck oil spray.