Time and method of apple grafting
Most apples are grafted from March to April or June to August. The grafting methods include bud grafting, branch grafting, cutting grafting, subcutaneous grafting, split grafting, ventral grafting, tongue grafting and so on. Among them, the branch grafting is from the last ten days of March to the first ten days of April, and the bud grafting is from the middle of June to the first ten days of September. If the buds are grafted before the middle of June, the buds can germinate in the same year, and those grafted after August will not germinate in the same year.
Grafting technology of apple trees:
1. The selection of rootstocks. Plants with strong growth, well-developed roots, no diseases and insect pests, and affinity with scions.
2. The selection of scion. Choose sunny, short internodes and fully developed annual branches.
3. The treatment of scion. The scion is 5-10cm long, with more than two leaf buds. Then use the splice knife to cut the non-budding side of the scion and cut it into a smooth long slope around the long 2.5cm. Generally, it is better not to remove the pith, but with a little xylem. The favorite side cuts the short slope that is less than 1cm, so that the lower end of the scion is flat wedge-shaped.
4. Treatment of rootstocks. Seedlings with 1-2cm thickness should be selected for rootstocks. Cut the rootstock from the ground 5-8cm, and trim the rootstock evenly, and then according to the thickness of the scion, on the smooth side of the rootstock, cut vertically with xylem with a cutting knife, and the cutting surface is about 2.5cm.
5. Grafting operation. Insert the cutting face of the cut scion length into the cut of the rootstock, and align the cambium on both sides, so that the upper end of the cutting surface of the scion should expose about 0.2cm, that is, "white", so as to facilitate the healing and growth of the rootstock and scion.
6. Lashing. After connection, tie the interface with a wide 0.5cm plastic belt and apply wax to prevent dryness. When binding, do not move the rootstock to form a layer alignment position, loose and tight moderately, not only do not damage the tissue, but also firm.
The above is the introduction of the time and methods of apple grafting. I hope it will be helpful to you.
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