Apple yield due to anti-aging pruning

The research was carried out in an apple orchard in 1987 planting, the layout of trees 7x5 m, the rootstock is strong-growing (seedlings of cultivated varieties). In the first experiment, the effect of reducing the height of the crown on the fruit yield was studied. The object of research is an apple tree of the Sinap Orlovsky variety. Options: 1. Without reducing the height of the crown (control); 2. Reducing the height of the tree to 5.0-5.5 m; 3. Reducing the height of the tree to 4.0-4.5 m; 4. Reducing the height of the tree to 3.0-3.5 m. Pruning of trees was carried out in the spring of 2015. In the second experiment, the removal of perennial wood was carried out and the yield was compared. The object of research is an apple tree of the Antonovka ordinary variety. Variants: 1. Sanitary pruning (control); 2. Pruning for 3-4 year old wood; 3. Pruning for 5-6 year old wood; 4. Pruning for 7-8 year old wood. Pruning of trees was carried out in the spring of 2016. The repetition in the experiments is 4-fold, in variants of 6 accounting trees, the placement of plots is randomized. In the first experiment, for the sixth year, the highest yield was noted in the variant with a decrease in the crown to 4.0-4.5 m - 15.8 t / ha. In this variant, the largest total yield for 6 years was also obtained - 55.1 t / ha. In the second experiment, in the variants with anti-aging pruning, the total yield for 5 years exceeded the control variant by 9.9-36.3%. The highest yield was obtained in the version with pruning for 5-6-year-old wood - 52.2 t/ha.