The management of Panonychus ulmi Koch in apple orchards is critical to reducing both qualitative and quantitative damage. Panonychus ulmi is one of the most common mite species, affecting a variety of plant hosts including non-fruit trees, fruit trees, stone fruits, and weeds across the country. This study investigated the effectiveness of three different concentrations of bifenazate in controlling Panonychus ulmi populations in apple orchards located in regions with distinct geographical locations and chemical histories of pest management. The treatment was applied via foliar spray, with an evaluation based on an average population of five mites and 30% leaf contamination. The effectiveness of each concentration was assessed by collecting 50 leaf samples from the upper side of the leaves. The findings showed that bifenazate concentrations of 6.0 and 7.0 ml/l were effective in reducing Panonychus ulmi populations to below 5 mites per leaf. However, while bifenazate reduced the number of natural predators, such as predatory mites, age bugs, and predatory thrips, it did not eliminate them.
