بررسی کارایی تله های چسبی و پارافرمون در کاهش جمعیت پسیل معمولی پسته در منطقه بجستان

Agonoscena Pistaciae Burckhardt and Lauterer (Hem:Psyllidae) is a key and damaging pest of pistachio gardens in Iran, which leads to the quality and quantity reduction of pistachios every year. In order to control Agonoscena Pistaciae, pistachio trees are sprayed up to six times a year and this increases the amount of pesticide use, resistance of insects, and environment contamination. Therefore, the need to review the chemical control in reducing the amount of pesticide application makes the detection and application of non-chemical methods necessary. In this study, we aimed to compare the efficiency of yellow and white sticky traps alone and with parafermion. So, we conducted a study in the form of random complete block design with four treatments in the region of Bajestan (in the South of Khorasan Razavi). The treatments included yellow sticky trap, white sticky trap, yellow sticky trap + parafermion, and white sticky trap + parafermion with four replications in five stages. In this design, plastic cards of 15x10 cm and parafermion from Scentomos Company in Canada were used. In each sampling, the cards were separated from trees, transferred to the laboratory, and the number of insects were counted and recorded. Furthermore, in order to count the number of nymphs, four leaves were collected from four sides of the tree and peculiar nymphs on the leaflets, in the middle of each leaf, were counted. Parafermion was also replaced at each stage so that it can be continuously distributed at the same level and does not decrease. The effect of parafermion on Agonoscena Pistaciae was carried out for the first time in the world. The results showed that the highest number of adult insects was hunted in the treatment of yellow sticky traps + parafermion with the average hunting of 3144.2 mature insects in each trap. The highest number of nymphs on the middle leaflet was observed in the white sticky trap and the control trap with a mean of 68.5 nymphs. According to our findings, the number of insects hunted in the traps had a negative correlation with the number of nymphs on the leaf. Considering the high amount of hunting in yellow sticky trap + parafermion treatment and less number of nymphs on the leaves of this treatment, application of yellow sticky trap + parafermion in pistachio management programs can be very effective. To achieve the final result, we will repeat the study one more year.