بررسی اثر حشره کشی چند عصاره گیاهی روی پسیل پسته Agonoscena pistaciae Burckharat & Lauterer (Hem.: Psyllidae) در منطقه شاهرود

Pistachio psylla, Agonoscena pistaciae Burkhardt & Lauterer (Hem.: Psyllidae) is one of the most important pest of pistachio orchard in Iran. Dense and continuous application of chemical pesticides in pistachio gardens has led to flooding of pests and a decline in the population of natural enemies. In this research, reviewed, based on laboratory studies, effect of herbal compounds of Dayabon and Arugula oil and its Comparison with Chemical Fenitrothion in pistachio garden in Dehmola County, Shahrood. 4000, 6000 and 8000 ppm Dayabon, 4000 ppm Arugula oil and 2000 ppm Fenitrothion used for field experiments. The experiment was conducted in a completely randomized block design in field conditions. Sampling was carried out on six occasions, one day before the treatment, one day after treatment, 3, 7, 14 and 21 days after treatment. Then, the average population of pests in each experimental calculated, Using the Henderson-Tilton formula (1955), was calculated the efficiency of each of the pesticides. In the early days, there was no significant difference between treatments and control. Whereas the effect of plant pesticides increased from seventh day after treatment and was effective for up to third week after treatment. However, the efficacy of Fenitrothion 14 and 21 days after treatment significantly decreased. According to the obtained results, botanical pesticides on recommended concentrations can be effective against pistachio psylla.