Walnut grafting in summer and spring at home with photo and video
One of the ways to propagate fruit crops is grafting. It is carried out in order to obtain a tree with high characteristics. These include resistance to low temperatures, strong immunity. After grafting a walnut in the summer, you can get a crop that will be famous for rich harvests. But this procedure is quite complicated and requires certain skills.
Vaccination timing
The most successful period for grafting a heat-loving culture is summer. In mid-July, they are preparing for the procedure using two-year-old seedlings. They are budding walnut kidneys.Depending on where the walnut crop is propagated, the operation is planned from May to August.
The scion does not take root well if the procedure is left for the fall. Spring vaccination is also not always successful. At the end of winter, you can graft using cuttings as material. They are prepared in advance.
Budation methods
Each gardener grafts in his own proven ways. There are simple options for the operation and complex ones. For beginners, the budding method is suitable, which does not require special skills.
In one case, the peephole is removed along with the half-tube of the scion. Make 2 transverse cuts in the selected area with a special knife, without affecting the wood of the handle. Then connect the parts by cutting lengthwise. Remove the half-pipe together with the kidney. The kidney should be in the middle between the incisions. The surface of the scion is made even, carefully cutting off the tubercles and cleaning out the roughness.
The summer method of budding is carried out with the help of an unformed vegetative bud. It is removed from those shoots whose bark is still grassy. At the beginning of summer, the walnut graft is just in the stage of active growth. The grafting will be successful, as the callus quickly forms and grows at the junction of the scion and rootstock.
After 2-3 weeks, the gap between the shield and the bark at the grafting site will be completely closed.
Preparing herbaceous shields with an eye for grafting is easy, as they are easy to cut off at the level of the bark. In this case, the procedure period is shifted to May-June.
Grafting knife
An important condition for a successful grafting operation is a tool that cuts out a kidney with a shield.
The knife can be purchased or ordered in special workshops. It has 2 blades. By arranging them in parallel and rigidly fastening them, they get the perfect tool for grafting. The distance between the blades is 3 centimeters.
Self-made knives from surgical scalpels or high-quality steel sheet are also welcome. The blades are mounted on wooden bars 10 centimeters long and 1 wide. The main requirement for the tool is its sharpness.
An ordinary budding knife will be an assistant in the procedure.
Selecting and preparing stock
Tree for rootstock is chosen from walnut varieties:
- 3 years old;
- stem diameter 1.5 cm;
- frost resistant;
- with a strong immune system.
The main thing for a scion and a rootstock should be closeness in their main characteristics. You can graft a kidney on such crop varieties that have a high yield, such as Pyatiletka, Dawn of the East. Seedlings of rock-type walnut grown independently are used.They practice grafting a walnut onto a Manchurian walnut, which is more resistant to weather disasters.
It is necessary to clear part of the stem of the stock before grafting. 2 cuts are made with a knife along the trunk not lower than 10-15 centimeters from the ground, but the half-pipe is not removed so that the grafting site does not oxidize.
Interestingly, walnuts can be grafted onto other crops. For this, stone fruits are used - cherries, plums. From flowering shrubs, lilac is suitable.
How to plant a walnut
Only when a kidney with a shield is cooked, then a proportionate part must be cut into a rootstock. Experienced gardeners first prepare a half-ring cut on the stem of a seedling, and only then on a walnut stalk. Then it is easier to connect the parts by shortening the extra strip of scion. The eyes taken from the middle part of the cutting take root better, a little worse - at the base or at the top.
Having connected the kidney with the shield and the half ring on the rootstock, they are tied with PVC tape. They begin to impose twine from a transverse cut. Be sure to monitor the density of the tape on the wound. It is better to apply layers of strapping in a spiral. Carry out the strapping from the bottom up and back. A lot of film is consumed, up to 50 centimeters, in order to tightly close the wound on the trunk.
If the operation was clean, fast, then the survival rate of the kidney will be high, oxidative processes in the tissues will not have time to start.
To prepare for budding on the same day, it is necessary to cut off part of the rootstock crown so that the tree directs its forces to the fusion of the cadmium of the seedling and the bud shield.
Features of winter vaccination
The winter vaccination method is different from the summer one. It is carried out in a room where a stock is introduced 2 weeks before the procedure. The seedling and the stalk are prepared for the operation by cutting off the ends applied to each other obliquely.Do not forget about the tongue, which is left 1.5 centimeters in size. At the same time, attention is paid to the kidney, it should be on the scion on the opposite side of the cut. Connect the parts of the scion and rootstock so that the cadmium layers of the reeds coincide. The grafting site is tied with twine or elastic tape, coated with garden pitch.
It is impossible to use a curved stalk with slight thickenings for the operation.
This home method is used to plant a grafted seedling in the garden in the spring. Until then, he will be in a dark and cool place.
You can grow walnut seedlings for the winter procedure with seeds. After 3 years, the stock will be ready in order to plant the desired variety of nut crop.
Spring is suitable for grafting, but in this case, cuttings are harvested in autumn, they are kept in the basement. But grafting rarely succeeds at this time of the year due to the fact that the sap flow of the nut crop begins early.And it is necessary to graft before the tree begins to revive after the winter.
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