What to do if the walnut tree has too many branches due to hanging fruit?

If more than two-fifths of the bark is still unbroken, then the broken branches can be fixed by rope hanging or wooden stick support to prevent the remaining bark from continuing to tear. This keeps the walnuts on the broken branches ripe.

In order to avoid the walnut tree from hanging too much fruit and crushing the branches, it is necessary to pay attention to the following points:

1. Prevention of pests and diseases.

The larvae of walnut cloud-spotted longhorn beetle, mulberry beetle, brocade forging beetle, sawn longhorn beetle, etc., drill cavities in the cortex and xylem, resulting in a decrease in the strength of the branches, and it is easy to crush when there are more fruits. After discovering insect pests, it is necessary to actively control them

Manual killing is directly captured during the adult development period. It can also be booby-trapped at night with lights.

The base of the trunk is painted white Every year in November and December, 5 kg of quicklime, kg of sulfur powder, kg of salt, and 20 liters of water are fully mixed and applied to the base of the trunk, which can prevent the adult from laying eggs and kill the hatchling larvae.

Artificial killing of insect eggs 6 July Check the base of the tree trunk, look for the place where the eggs are laid or the place where black water flows, dig up the infested area with a knife, and kill the eggs or hatchling larvae; It can also be struck with a hammer to destroy eggs or hatchling larvae.

Artificial hooking to kill larvae If you find larvae that have bored xylem, you can use a small hook at the end of a thin wire to insert a worm hole to hook and kill some larvae.

Pesticide control When it is found that the walnut tree has fecal debris discharged, the fecal debris near the wormhole is removed, and 100 times of 80% dichlorvos emulsion or 200 times of 50% phoxanthion emulsion are injected from the wormhole; You can also use a cotton ball dipped in 50% phosphine EC or 50% pine moth EC and stuff it into the wormhole; Zinc phosphide poison sticks can also be inserted into insect holes to fumigate larvae, and good control effects can be achieved by punching and injection method.

Protect and attract birds, such as woodpeckers.

2. Reasonable pruning.

For the over-dense branches, crossed branches and overlapping branches on the periphery of the canopy, they should be thinned or retracted in time. For some weak branches with insufficient light and greater consumption than accumulation, they should be thinned out in time, so as to meet the requirements of evacuation of peripheral branches and non-empty inner chambers.

Using strong development branches, for the strong branches that are born in the middle or outside of the main and side branches, the strong branches can be left strong and weak, and the left development branches can be gradually transformed and cultivated into medium or small branch groups.

Control the long branches, and control and use the long branches in the inner chamber if the parts of the body are suitable and do not affect the ventilation and light transmission. In general, it is released in the first year, and in the second year, it retracts at the weaker branches, and is cultivated into a small fruiting branch group. Keep a distance of 60-100 cm between the branches to ventilate and let in light.

For the aging branch group, it should be retracted and rejuvenated in time.

After the walnut harvest this season, pluck the topping before the next season of flowering (usually before the end of June), or you can prune it now to remove some of the branches and do it again before June next year.

Trees that grow for 2-3 years, one is to use topping, pulling branches and other methods to cultivate side branches, so that each main branch has two side branches, one extended branch, the whole tree forms "three branches and nine heads", the first side branch is 40 45 cm away from the main trunk, and the second side branch is 50 55 cm away from the first side branch. The second is to cultivate fruiting branch groups on both sides of the side branches, extended branches and main branches, and use pruning techniques such as topping and twisting tips to fill the tree space with fruiting branches of different sizes. As a result, the principle of branch group configuration is that the inner is large and the outer is small, the inner is dense and the outer is sparse, the size is staggered, dense but not crowded, and sparse but not empty.

Old trees - the branches have been formed, and they can only be pruned and shaped, removing some of the miscellaneous branches, and trying to ensure that only three branches are left on the second batch of branches.

1. Physiological disorders cause flower and fruit drops.

2. Poor pollination and insemination cause flower and fruit drop.

3. Flower and fruit drop caused by high temperature and drought.

4. Flower and fruit drop caused by disease and insect attack.

In order to prevent pecan fruit drop and achieve the goal of high yield, we must first investigate the cause of pecan flower and fruit drop before we can take targeted and effective measures.

A small amount of fruit drop in walnut trees is a normal manifestation of the growth process, and there are many reasons for fruit drop, which may be insufficient nutrients, lack of trace elements, and excessive use of nitrogen fertilizer. Usually walnut trees can still live, need to be fertilized in time, generally in spring and autumn each topdressing ridge leakage 1 time, top dressing soil fertilizer, should also be topdressing containing nitrogen, phosphorus and potassium compound fertilizer, before and after flowering to the foliar spray Shuofeng 481 and available boron, each spray 1 2 times.

Causes of fruit drop in walnut trees.

A small amount of fruit drop in walnut trees is a normal manifestation of the growth process, and there are many reasons for fruit drop, which may be caused by improper selection of cherry blossoms, low temperature during flowering, insufficient nutrients, or lack of trace elements, excessive use of nitrogen fertilizer or partial application of nitrogen fertilizer.

Walnut tree fruit drop treatment method.

Walnut tree fruit drop can still live, walnut tree needs to be topdressed in time after fruit dropping, generally in spring and autumn each top dressing 1 time, top dressing soil miscellaneous fertilizer, should also be topdressing containing nitrogen, phosphorus and potassium compound fertilizer, before and after flowering to the foliar spray Shuofeng 481 and available boron, each spray 1 2 times.

Walnut trees prevent fruit drop.

Disease preventionWalnut tree to prevent fruit drop should be carried out disease prevention and control, the main diseases are walnut black spot and walnut anthracnose, etc., can be sprayed 1 time before germination, spray Bordeaux liquid before and after flowering, spray once every 20 days or so, spray 2 3 times in a row.

Pest controlStrengthen the management of the park, ensure the healthy growth of walnut trees, improve the ability of walnut trees to resist diseases and insects, when picking walnuts, cut off the branches with diseases and insects, and then destroy them in a centralized manner away from the walnut orchard.

It shows that walnut trees are not protected from pests and diseases, and pesticides need to be sprayed at this time to control pests and diseases.

In such a situation, I think we should spray some pesticides in time, and we should also remove insect pests in time, and we can also spray some fungicides, and we also need to keep the soil fertile, and we should also remove weeds in time, and we should also ensure that the sun is sufficient.

1. Non-variety cultivation. The walnut tree planted with seeds is called a seedling, and the walnut tree may not bear fruit because the seedlings are not grafted with excellent varieties. If the walnut seeds used are not selected, the walnut trees that grow are very different, the advantages and disadvantages are uneven, and some fruits are late, and they will bear fruit after about 10 years of planting.

Second, the site conditions are poor and the management is extensive. Walnut trees are planted in poor conditions, thin soil layer, poor soil, let the tree grow, without management, resulting in long-term insufficient tree nutrition, weak branches, no flower buds, no fruit. 3. Improper management.

Excessive nitrogen fertilizer and no lack of water make the tree grow vigorously, with many and dense branches, poor ventilation and light transmission conditions, and short and medium branches that cannot bear fruit and do not bear fruit. Some in order to interplant crops under the tree, the branches under the canopy of walnut trees are trimmed, and the number of branches in the whole crown is too small and most of them are long branches, the tree posture is upright, the tree is strong and weak, and it cannot form fruiting branches.

The best time for pruning is before the leaves fall in autumn or after bud break in spring. Pruning is best between the "autumn equinox" and "cold dew" in autumn, which is conducive to early wound healing during the year. Pruning can also be done in the winter when the leaves fall 30 days after the leaves fall to 25 days before bud break to reduce the adverse effects on the tree.

Walnut trees are suitable for tree shape:

Pruning methods: 1. Key points of pruning young trees. Walnut tree saplings are vigorous in nutrition, the branches grow rapidly, and the crown expands year by year.

2. Promote the formation of fruiting branches. Erect and grow long branches, flatten and put down for slow release, slow down the growth of branches, and promote the formation of fruiting branches.

3. Increase the amount of branches and cultivate fruiting branches. Use the short and rotten method to increase the amount of hunger pants and add branches: the slow release method is the main method, and the strong large and medium-sized fruiting branches are cultivated on both sides of the side branches.

When cutting branches, the remaining branches should be short to prevent bare branches from occurring; For the old fruiting branches, they should be retracted in time; Use the branches extracted from dormant buds to renew the canopy.

4. Improve the light of the inner chamber of the canopy. For the dense long branches, overlapping branches and competing branches and cross branches growing in the inner chamber of the canopy, the competing branches and cross branches growing on the periphery of the canopy should be appropriately retracted or sparse.

5. Prune the dorsal and dorsal branches. When the dorsal branch is used as the extension head of the main branch, the main branch should be higher than the side branch, and the growth of the main branch should be stronger than that of the side branch; The dorsal and lower branches should generally be thinned in time.

1. If there is a pruning situation, don't worry, if it is a walnut tree with branches, we can cut off the dry branches before the walnut tree germinates or just germinates, and the cutting place can be smeared with a healing agent, so that pruning will also make the walnut tree healthier and grow better.

2. If Cong Yun is just planted walnut seedlings in the case of branching, we try not to deal with it as much as possible, because the newly planted walnut seedlings have not yet taken good root, and the early stage mainly relies on their own water and nutrients to grow, at this time pruning, will accelerate the evaporation of walnut seedlings water and nutrients, it is best to wait until May and June of the Yang infiltration Liang calendar, when the root system of walnut seedlings grows to a certain extent, we will prune properly, and the pruning method is to cut off all the places where the branches are drawn, and apply healing agents at the cutting places. As long as the walnut seedlings are not plucked below the grafting interface, they can be pruned by Zhaofeng.

1. Pruning: To prevent walnut tree fruit drop, it is necessary to cut and thin the branches and leaves that are too densely grown. 2. Spraying:

Spray the walnut tree with 1-2 times of fungicide to make it grow healthily. 3. Fertilization: Apply 1-2 times of phosphate and potassium fertilizer to walnut trees to improve the fruit setting rate.

4. Drainage: Drain stagnant water for walnut trees in time in the rainy season to avoid root rot.

1. Pruning

When preventing and controlling walnut tree fruit drop, it is necessary to prepare sharp scissors that have been sterilized to cut the branches and leaves that are too densely grown, improve the light transmittance and ventilation between walnut trees, so that they can grow healthily, and cut the branches of walnut trees that grow too long to make them concentrate nutrients.

2. Spray the agent

When breeding walnut trees, it is necessary to regularly observe the growth state of the plant, if the walnut tree is found to be infected with disease, it is necessary to immediately cut off the diseased branches and fruits of the plant, so as not to make the situation more serious, and to spray the walnut tree 1-2 times of fungicide to maintain its normal growth.

3. Fertilization management

Walnut trees need sufficient nutrients in the growth process, when breeding walnut trees, it is necessary to apply 1-2 times of phosphorus and potassium fertilizer during the plant growth period to speed up its growth rate, and after the walnut tree bears fruit, it is necessary to spray potassium dihydrogen phosphate or urea on its leaves.

4. Drain stagnant water

Walnut trees are not tolerant to waterlogging, when breeding walnut trees, if the rainfall is too large, it will cause the plant to rot the roots, so that the fruit of the walnut tree is black, and it is necessary to dig a drainage ditch for the walnut tree during the rainy season, so that the stagnant water is quickly discharged from the soil and promote the vigorous growth of walnut trees.