A Detailed Explanation of the Causes of Excessive Vigorous Growth in Apple Trees and the Solutions

China is the country with the largest apple planting area and production in the world. Apples are widely cultivated in China, but during the growth of apple trees, excessive vigorous growth often occurs, affecting the yield and quality, and reducing the economic returns of fruit growers. So what are the causes of excessive vigorous growth in apple trees? How should it be solved? Come and take a look with the editor.

I. Causes of Excessive Vigorous Growth

1. Improper management

Many people, due to a lack of management techniques when planting, often blindly water and fertilize in order to make the fruit trees bloom and bear more fruit, and some do not know about girdling or spraying to control growth, so the fruit trees often end up growing excessively vigorously.

2. Improper pruning

When pruning, they focus only on winter, pruning only once a year, and pruning too heavily at that one time, which leads to excessive vigorous growth of the fruit trees.

3. Excessive application of nitrogen fertilizer

Plant growth cannot be separated from nitrogen fertilizer, and nitrogen fertilizer promotes plant growth. Many fruit growers, in order to speed up the growth of the fruit trees, apply too much nitrogen fertilizer and use less of other fertilizers, which leads to excessive vigorous growth of the plants.

4. Too few fruits set

If the number of fruits set by the fruit trees is too small, the goal of suppressing the canopy through fruit load cannot be achieved. The nutrient supply to the plant far exceeds what is needed for fruit set, so the excess nutrients are absorbed by the branches of the plant, leading to excessive vigorous growth.

II. Solutions

1. Strengthen management

When fertilizing, it should be done according to the different growth stages, paying attention to the amount of nitrogen fertilizer applied, and applying more farmyard manure or organic fertilizer, which can provide a variety of nutrients for plant growth. When the canopy is expanding, adopt comprehensive and rational management techniques to make it branch more, and use flower-forming measures such as long shoot laying, ring notching, branch bending, and girdling to form a certain number of flower buds, achieving the goal of suppressing the canopy and controlling excessive vigor.

2. Prune at the right time

When pruning, pay attention to changing winter pruning to adjustment through the four seasons. Winter pruning should also not be too heavy, mainly laying out long shoots and thinning branches, without weakening or shortening back, and without heading back. Summer pruning should involve bending branches and notching buds or making multiple girdles on long shoots that have been laid out. For vigorously growing young trees, pinching the shoot tips can be done in May when the new shoots grow to 50 cm, so that they branch more, achieving the effect of controlling excessive vigor. When the plant is growing vigorously, base girdling can make the effect of controlling excessive vigor even more obvious.

The above is an introduction to the causes of excessive vigorous growth in apple trees and the solutions. We hope it can help you. If you want to learn more related knowledge, please follow us.