MESUROL – A FACTOR TOWARDS MORE REGULAR APPLE BEARING

Chemical thinning of apple fruits 7.3 mm (cv. Gloster) and 9.3 mm (cv. Jonagold) in diameter was performed with Mesurol WP 50 (concentration 1800 ppm). In 2001, intensity of differentiation on the treated Gloster cultivar trees was good in spurs and long bearing wood, and inadequate in one-year shots. Differentiation in untreated trees was inadequate. In Jonagold, differentiation was good in spurs, and poor in long bearing wood and one-year shots on the treated trees. In untreated trees, the differentiation in spurs was moderate whereas in long bearing wood and one-year shots inadequate.