The effect of Pilarhance, SL growth regulator on yield and quality of sour cherry fruits

Abstract

The research was carried out in the orchard of the “Ceteronis ST SRL” enterprise, founded in the spring of 2022, with trees of Erdi Botermo variety, grafted on Mahaleb cherry rootstock. The planting distance was 4 x 2 m, and the crown shape was a free-growing spindle. The soil between the rows and between the trees in a row was maintained as clean cultivation and irrigated. The following variants were investigated in the research plot: 1. Control (spraying with water); 2. Pilarhance, SL, 0.8 l/ha; 3. Pilarhance, SL, 1.3 l/ha. Two treatments were carried out during the growing season. During the reference period, it was established that the greatest intensity of growth processes in the tree crown and sour cherry fruits was recorded in the variant treated with Pilarhance, SL at a dose of 1.3 l/ha, applied twice by spraying. The first treatment should be carried out at the end of the flowering period, and the second during the period when the fruit color changes from green to yellow.