Peșteanu, Ananie2026-06-172026-06-1720251454-7376https://repository.iuls.ro/handle/20.500.12811/6676The investigations were carried out with Gala Buckeye apple trees variety grafted on the M9 rootstock. The planting distance was 3.5 x 0.8 m, with a vertical crown shape. The aim of the research was to study the effectiveness of Pilarhance, SL as a growth regulator in different treatment doses to stimulate fruit growth and development processes in apple orchards. To achieve the planned objective, the following variants were studied: 1. Control, without treatment; 2. Gibbera, SL, 0.5 l/ha; 3. Pilarhance, SL, 1.2 l/ha; 4. Pilarhance, SL, 1.3 l/ha. On the basis of the obtained results, it was established that the growth regulator Pilarhance, SL can be included in the technological scheme for apple cultivation at a dose of 1.3 l/ha, applied 3 times by foliar spraying. The first treatment has to be carried out after flowering, and the next 2 with an interval of 7-10 days between them.Englishgrowth regulatorfruitproductionfirmnessqualityArticle2069-8275