Grafting technology of walnut tree

Grafting technology of walnut tree

1. Grafting time

The grafting time of walnut trees is generally in March, but it can also be done in May or June. It enters its growing season in March, and it is appropriate to use the bark grafting method at this time. It is beneficial to its recovery and has a high survival rate. It is better to use cleft grafting in May and June, which is easier to operate and very suitable for beginners.

2. Stock Treatment

The rootstock should be selected to be healthy and free of diseases and insect pests, so as not to affect the growth of the scion. Saw the trunk on a smooth surface, making sure the cut is smooth. Then make a longitudinal cut to a depth of about 4-5 cm. Do not pull out the knife immediately after cutting, wait until you insert the scion.

3. Scion selection

The scion should be a thick branch with 2-3 buds on it, and its diameter should be slightly smaller than that of the rootstock. Cut the bottom of the scion into a wedge shape with a length of about 4-5 cm to make it easier to insert into the rootstock.

4. Grafting

After preparing the rootstock and scion, grafting can be carried out. Use the knife to prop open the cut in the rootstock, insert the base of the scion, and then remove the knife. Make sure the cambium of the scion and the rootstock fit together, which is more conducive to wound recovery. Then wrap it up with plastic strips, covering the entire wound to prevent bacterial infection.

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