What are the reasons for the low survival rate of apple grafting
Apple is one of the major fruits; it is rich in nutrients, and its calorie content is very low, making it very suitable for weight loss, and its nutrients are also easily absorbed and utilized by the human body. Many apple saplings are cultivated through grafting, but during the grafting cultivation process, many errors can also occur, leading to grafting failure. So today, what the editor wants to introduce to you are the reasons that affect the survival rate of apple tree grafting. Let's take a look.
1. Rootstock-scion combination
The survival rate of apple tree grafting is greatly related to the rootstock-scion combination. The stronger the healing ability that can be produced between the rootstock and scion, the higher the grafting survival rate. So the compatibility between the rootstock and scion has an extremely large impact on the survival of apple tree grafting, and at present, the rootstock more suitable for apple tree grafting is mostly M26. This type has the best rootstock-scion healing ability at present, much better than the healing ability of varieties such as Huashuo and Honeycrisp.
2. Selection of scions
The quality of the scions also has a very large impact on the survival of apple tree grafting. We should choose scions that are suitable for local growth, of high-quality varieties, and with a high fruiting rate. Secondly, the scions should be selected from sunny areas, robust, free of pests and diseases, well developed, with plump buds, and without damage. The collected scions should maintain freshness and a certain degree of humidity, and are best stored in an environment with a temperature of about 0 to 5 degrees and a humidity maintained at about 90 percent. The temperature and humidity must not be too low or too high, otherwise both will affect the scion's healing tissue and thereby affect the survival rate of apple tree grafting.
3. Grafting management
Grafting management is the key to affecting the survival of apple trees; the quality of grafting technique directly affects the grafting survival rate. First, we need to process the scions, generally cutting the scions into sections of about 6 to 10 cm, and they must carry two buds or more. Next, cut the sectioned scions with a knife into smooth slopes. For the rootstock, we likewise cut it into sections of 6 to 10 cm and process it flat, and finally reasonably select the scions according to the size of the rootstock. When grafting, we need to align the joint of the rootstock and scion, then wrap it well with plastic film. When tying the plastic film, pay attention: it should be tied tightly, densely, and firmly, as this can improve the survival rate.
4. Post-grafting management
Management after apple tree grafting also has a relatively large impact on the grafting survival rate. If the post-grafting management work is not done properly, it is very likely that apple trees that had originally survived will die again. Generally, about 10 days after grafting, the grafted seedlings should be checked in a timely manner. If it is found that the grafting has not survived, then timely re-grafting is all that is needed. When the new branches after grafting grow to about 18 cm, the tied plastic film must be uncovered, and when uncovering it, tie and support the framework.
The main reasons affecting the survival rate of apple tree grafting are the selection and treatment of rootstock and scions, grafting treatment, grafting method, and later-stage seedling management. The above is all the content the editor wants to share with you today. If you still have other questions you want to ask, remember to leave a message for the editor.