Walnut tree pruning grasp timing

Pruning Time The pruning of the walnut tree during the dormancy period tends to injure the tree vigor and even cause the local branches to die. The pruning period is most suitable after the fall of the leaves before or after the spring. The best cuts are between autumn “equinox” and “cold dew”, which is good for wounds to heal early in the year. Pruning can also be performed in the winter 30 days after the fall to the 25th day before the bud to reduce the adverse effects on the tree.

Walnut trees suitable for tree shape The current high-quality, early-maturing, thin-skinned walnuts are mainly made up of three types of sparse-layered, open-hearted, and spindle-shaped trees. For varieties with good fertilizer and water conditions, thick soil layer, or strong growth potential, the planting density is small, and small crowns may be sparsely layered or spindle-shaped. On the contrary, they may be used for happy-shape or modified happy-shape.

Pruning method 1, sapling trim points. The walnut tree saplings are in good nutrition, the shoots grow rapidly, and the crown expands year by year. At this time, pruning should pay attention to cultivating the main trunk, keeping the main branch, retaining the auxiliary branches, and slowly cutting the densely squeezed branches, legged branches, thin and thin branches, and within the canopy. Leave more results. 2, to promote the formation of the results of the branch. Stand erect and prosperous, pull flat and put slowly, ease the growth of branches, and promote the formation of the result. 3, increase the amount of branches, culture results branches. Using a short cut method to increase the amount of branches; to slow-release method, the lateral branches of both sides to cultivate strong large and medium-sized branches. When truncated, the remaining branches should be short to prevent the emergence of baldness; for the old branches, they should be retracted in time; using the dormant buds, the canopy should be updated. 4, to improve the light within the crown. For dense branches, overlapping branches and crowns that grow in the canopy, competing branches and cross branches that grow in the canopy, properly retract or sparse. 5. Trim the back branches and back branches. When the back branch is used as the main branch to extend the head, the main branch head should be higher than the side branches, and the main branch growth should be stronger than the side branch; the back branch should be removed in time. 6, control the back branches and drooping branches grow. The walnut branches open at an angle; the growth of the back branches and the drooping branches and the growth of the back branches and both branches compete for nutrition.

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