Disorientation method application to control the eastern and plum moths number

The purpose of the study is to evaluate the use of binary pheromone disruptors for disrupting sexual chemical communication between the two dominant pests of the eastern and plum moth on plums and peaches. The study was conducted in 2019–2020 in the farms of the Krasnodar Region of the IE farm Shcherbakov N.A. and the Svetlogorskoye agricultural enterprise of the Abinsky District, on the plum of the Stenley variety (area 3 hectares) and the peach variety Zolotoy Yubiley (area 7 hectares). To disorientate the eastern Grapholitha molesta Busck and the plum Grapholita funebrana Tr. moth on plum and peach polyfunctional disruptors, SHIN-ETSU MD VP TT, D were used. Dispensers with the initial rate of pheromone consumption in the amount of 300 pcs. on a plum and 250 pcs. on a peach per 1 ha were hung on trees at a height of 1.5–2 m from the soil surface, evenly distributing over the entire area. The disorientation effect was calculated by the number of males caught in the disorientated areas in comparison with the controls. A high disorientation effect was established on the plum, which at a pheromone consumption rate of 300 dispensers / ha was 99.7 %, on a peach with a pheromone consumption of 250 dispensers/ha – 100 %. Damage to plum fruits in the experiment was 0.8 %, in the control – 34.7 %, on a peach in the experimental version – 0.5 %, in the standard – 7.8 % (chemical protection). The duration of the disorienting protective effect of pheromones was up to 4 months. The study revealed a high efficiency of complex sexual disorientation of dominant pests based on multicomponent pheromone vaporizers.