Which Blueberry Seedling Variety Is Best? A Detailed Guide to Propagation Methods
Blueberry is a fruit that many people think of as sour the moment they hear about it, but in fact many blueberry varieties are not only not sour, they also have a very rich flavor. Friends who want to grow blueberries should also consider the choice of variety.
1. Which blueberry seedling variety is good?
Blueberry varieties can be divided into 4 major categories:
1. Lowbush
Lowbush blueberry is also known as wild blueberry or wild lowbush blueberry. It grows in the high-latitude, low-temperature region of the eastern coast of the Atlantic, in just a handful of areas. Blueberry is a perennial woody rare fruit tree, listed by the International Food and Agriculture Organization as one of the five major health foods for humans, and it has the reputation of being the "king of fruits of the world" and the "golden fruit."
2. Half-high
Half-high blueberry is obtained by crossing northern highbush blueberry with wild lowbush cranberry from the United States and other places. This type combines the short plant size and strong cold resistance of lowbush blueberry with the excellent fruit quality of highbush blueberry. The tree height is generally 50-100 cm. The fruit is larger than that of lowbush cranberry but smaller than that of highbush cranberry, and its cold resistance is strong, generally able to withstand low temperatures of -35 degrees C.
3. Highbush
Highbush blueberry mainly comes from selected breeding and hybrids of the wild species Vaccinium corymbosum L. It is naturally distributed in North America. It is not drought tolerant and is suitable for growing on moist soil. It often forms communities in swamps, streams, moist sandy land, and places at the foot of mountains where groundwater seeps.
4. Rabbiteye blueberry
Rabbiteye blueberry has a tall tree body, a long lifespan, and relatively strong tree vigor. The leaves are broadly elliptical to ovate. The flowers are light pink to bright pink. It is a cultivated variety selected and bred from wild rabbiteye cranberry types. Before the fruit ripens, its color is red like a rabbit's eye, hence the name rabbiteye blueberry. The fruit of the wild species is black or dark black, weighing about 0.5 g, thin and tasteless, with poor quality. The fruit of cultivated types weighs more than 1 g, is juicy and aromatic, with good flavor, and some are even better than highbush blueberry.
2. Blueberry seedling propagation methods
1. Seedbed site selection
Blueberry has certain requirements for the planting site. Generally, soil with rich organic matter content and a soil pH of 4.0-5.5 is chosen, and the drainage and irrigation system near the planting site should be complete, transportation should be well developed, and it should be far from pollution sources. Deeply plow the land, make the soil clods fine, and clean up impurities in the seedling site. Finally, before propagation, the propagation substrate also needs to be prepared well and base fertilizer applied well.
2. Propagation time
For propagation time, we usually carry out propagation every spring. This is when blueberry has the strongest vitality, so the emergence rate and survival rate will be much higher. The best time for spring propagation is between February and April each year. Of course, during propagation, the soil temperature at the planting site is best at 10 degrees or above, otherwise the sprouting speed will be very slow.
3. Propagation methods
There are generally four methods for blueberry propagation, namely seed propagation, cutting propagation, division propagation, and grafting propagation. At present, the most commonly used methods are seed propagation and cutting propagation. These two have a higher survival rate, and the quality of the blueberries is superior. Seed propagation requires variable temperature treatment and soaking with gibberellin to increase the seed germination rate. For cutting propagation, strong branches of excellent varieties free of pests and diseases are selected, then cut into small sections five or six cm long, and the cut ends are treated with a press before propagation can be carried out. For division propagation, newly sprouted plants from the mother plant are generally selected, dug up in late autumn, and cultivated, then planted in spring. Blueberry grafting is the same as the grafting methods of other fruit trees; the rootstock and scion must be selected well.
4. Seedling stage management
After propagation, watering should be done frequently to maintain soil moisture and promote the growth of the blueberry root system and new seedlings. However, the amount of watering should not be too large. If the temperature at the propagation site is relatively high, then we need to wait until the temperature drops before watering, otherwise it will affect the growth of blueberry seedlings. Another thing we should note is that in May and June, we should pay even more attention to water management. Nutrient management is also quite important at the seedling stage. Generally, we cannot fertilize casually. If the goal is to promote seedling growth, it is best to apply an appropriate amount of liquid fertilizer, once a week, and at the same time when fertilizing, it should be combined with watering.
In summary, this is the management of blueberry at the seedling stage. Do you have any blueberries you especially like to eat? You can talk about the blueberry varieties you think are good.
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