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Walnut trees can now be pruned. Through pruning, nutrient distribution can be adjusted to avoid nutrient consumption caused by the growth of useless flower buds and branches; In order to concentrate the growth and development of nutrients, branches and flowers, so as to reduce flower and fruit drop, improve fruit setting rate, and improve fruit quality. At the same time, it can also remove diseased and insect branches in time to reduce the occurrence of pests and diseases.
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How do you prune a walnut tree? Did you know after reading it?
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Proper pruning of walnut trees can open the angle of branches, stabilize the tree momentum, bear fruit early, increase and stabilize yield, ventilate and transmit light, and reduce the occurrence of pests and diseases.
Walnut trees are most suitable for winter pruning about 20 days before spring germination (early March in Lunan area), when pruning walnut trees will cause less damage and the least damage to the tree.
Walnut trees can also be pruned appropriately during the growing season (2-3 times a year), but the amount of each pruning should be controlled at about 20% of the total number of branches of the whole tree.
According to different planting densities, choose appropriate tree shapes (trunk sparse layer, small crown sparse layer, delayed heart shape, natural heart shape, etc.).
The key points of walnut tree pruning are: thinning the erect branches, overly dense branches, weak branches, overlapping branches, cross branches, diseased and insect branches, etc., on the back, and improving the light in the canopy; In the autumn (September to October), the young trees should be pulled and opened to ease the tree's strength.
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Excuse me, can walnut trees be pruned now? How to prune?
Hello, it's also an old belt that can be trimmed now, but it's a little late. The best time to prune is in the spring when the leaves are opened, that is, in the month, and in the fall, it is best to prune in the month. Moreover, the pruning time of walnut trees and other fruit trees is different, and walnut trees can not be pruned during the dormant period, which will lead to excessive wound flow and affect the growth and development of the tree.
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1. Pruning time.
Walnut trees need to be pruned at a good time. Spring pruning is the pruning of walnut trees after germination and before the leafing of walnut trees, this time of pruning is suitable for unfruitful trees or overgrown trees, which can control growth, weaken the tree, and bear fruit earlier. Trees that are not suitable for pruning in the early fruiting stage will cause injury flow, nutrient damage and weaken the tree.
Summer pruning is mainly light pruning, which is suitable for pruning walnut trees that grow too vigorously and do not bear fruit. Autumn pruning is carried out after the walnut harvest and before the leaves turn yellow, and can be selected from mid-September to early November, which is suitable for pruning weak and old trees. It is best not to prune walnut trees in winter to avoid wounds.
2. Trimming tools.
It is best to use special gardening shears for walnut tree pruning, and disinfect and sterilize the scissors in advance to avoid the germs on the scissors from spreading to the incision.
3. The main pruning method.
1) Sawing and forcing branches: In order to force the hidden buds, you can see the hidden buds above the bare legs, all the way to the xylem, which can promote germination and grow new branches.
2) Ring sawing: For larger non-backbone branches on walnut trees, ring sawing can be performed.
3) Pinching branches: Before June, the new shoots of the inner chamber have not yet been lignified, at this time, the branches with inappropriate growth direction can be pressed to a position with space.
4) Thinning: thinning and pruning dead branches, dense branches, inner branches, etc.
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How do you prune a walnut tree? Did you know after reading it?
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The pruning of walnut trees is better about 20 days before germination in spring (early March in Lunan area), and pruning can be carried out from June to September during the growing season.
The main points of trimming are:
1. According to different planting densities, select appropriate tree shapes (trunk sparse layer, small crown sparse layer, natural heart shape, free spindle shape, delayed heart shape, Y-shaped, natural round head row);
2. Remove erect branches, over-dense branches, weak branches, drooping branches, overlapping branches, diseased and insect branches, etc., and improve the light of the canopy.
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Walnut pruning takes place after the walnut harvest and before the leaves turn yellow (mid-September to early November). This pruning will reduce the leaf area and affect the nutrient accumulation of the tree, which is suitable for adjusting the skeleton structure of the tree. At the same time, because the leaves have not fallen, it is easier to distinguish the over-dense branches and shading branches, and remove them, so as to facilitate ventilation and light transmission, and there is no damage to the flow at this time.
Autumn pruning is mainly to thin out overly dense branches and shading branches; retract drooping branches; Adjust the structure of the tree skeleton. In addition, autumn pruning promotes strength, suitable for the pruning of weak trees, old trees, and walnut trees on the slopes.
Pruning method: Thinning overly dense branches and treating the dorsal branches. The large number of early walnut branches is easy to cause many branches in the crown and the density is too large, which is not conducive to ventilation and light transmission. In this regard, in accordance with the principle of removing the weak and retaining the strong, the overly dense branches should be removed in time.
The specific method is to cut it close to the base of the branch, and do not leave it to facilitate wound healing. The dorsal branches are mostly born under the back of the mother branch, which germinates early in spring, grows vigorously, and has strong competitiveness, which is easy to weaken the original branches, and form the phenomenon of "inverted pulling", and even cause the original branches to die.
Treatment: Pruning after germination or at the beginning of branch elongation. If the original mother branch is weakened or the branch angle is too small, the back branch or oblique branch can be used instead of the original branch, and the original branch can be cut off or cultivated into a fruiting branch group.
If the dorsal lower branches are moderately growing and have formed mixed buds, their fruiting can be retained. If the dorsal and lower branches grow strongly, they can be retracted at the appropriate branches after fruiting and cultivated into small fruiting branches.
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1. Pruning time.
Walnut tree pruning is generally done during the growing season, and try not to prune at other times, if pruning is done during the dormant period, it will accelerate the loss of water and nutrients, thus speeding up its death.
2. Pruning technology.
Walnut tree pruning should cut off part of the annual branches, followed by the extension of the side branches, cut off some of the perennial branches, and then prune the branches that are too dense to be properly pruned.
Pruning can be done from the bottom of the branches, and when the long branches germinate, they should be cut off in time. In addition, it is necessary to cut off the cross branches and overlapping branches, and some branches are very thin due to lack of light, so they should also be pruned off.
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1. Topping. In summer, if the secondary branches are too vigorous, they can be topped when the secondary branches are not lignified to promote branching, so as to dismantle and block the cultivation of fruiting branches.
2. Stub. The development branches that have not been truncated can effectively increase the branches and speed up the shaping process or the cultivation process of the fruiting branch group, but the number of new shoots of the stub should not be too much, and the parts should be staggered from each other, otherwise it is easy to cause the intersection and overlap of the branches.
3. Thin branches and long branches. When the growth part of the long branch is unreasonable, the growth potential is not as good as the adjacent main branch and side branch in the same direction, it should be thinned from the base, and the trap can also be appropriately retained according to its space, and cultivated into a fruiting branch group by stubbing and summer topping.
4. Throw-off. It is advisable not to topping or lightly cutting the top of the new shoots that grow mediocre. The lighter the pruning, the more fruiting branches are formed and the smaller the number of secondary branches.
5. Pulling branches. Timely pulling of branches can open the opening angle of walnut backbone branches, make full use of the canopy space, promote flowering, and improve the fruit setting rate.
6. Pick up the branches and take the branches. Soften the branches to shape the Wangji, and then tie the rope to pull the branches or hang the bag, hang the bottle, hang the brick to press the branches, change the angle of the branches, and put the branches in a suitable position.
The tree is more than 100 years old and has a diameter of more than 60cm.
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