Abstract:
The olive psyllid, also known as Euphyllura olivina, is a small insect that feeds on the sap of olive trees. It belongs to the family Psyllidae, which includes other plant-sucking insects. The psyllid can cause significant damage to the olive tree, afecting its growth and yield, and also reducing the quality of the olives produced. A study conducted in 2020 at the agricultural research center in Tarnab, which evaluated the efects of diferent pesticide treatments on the population of olive psyllids in an olive orchard. The study tested three treatments: CHLORPYRIPHOS 50% EC (T1), THIAMETHOXAM 25 WG (T2), and Detergent (T3), and compared the results to a control group (T4). The study found that after 24 hours, the population of olive psyllids decreased the most in treatment T3, followed by T1 and T2, respectively. After 48 hours, each treatment, except for the control, exhibited a similar pattern of population reduction. Treatment T3 resulted in the most significant decrease in the psyllid population compared to the other treatments. hTe mean olive psyllid population on a 10 cm branch in plants treated with CHLORPYRIPHOS 50% EC and THIAMETHOXAM 25 WG was significantly diferent from that of the control and Detergent, but not from either of the other two treatments. The control group had the highest olive psyllid population, which was measured at 22.08 total individuals. These results suggest that treatment with detergent was the most efective at reducing the population of olive psyllids, while CHLORPYRIPHOS 50% EC and THIAMETHOXAM 25 WG were also efective but not as much as T3.
Keywords:
chemical control
,
Olive psyllids
,
CHLORPYRIPHOS 50 EC
,
Detergent
,
THIAMETHOXAM 25 WG