A Detailed Guide to Blueberry Cultivation Techniques and Management Methods

Blueberry is a healthy and delicious fruit, and more and more people are growing blueberries, so what exactly are blueberry cultivation techniques? Let's take a look!

1. Site selection

Choose fertile, loose land with good drainage to establish the orchard, and carry out deep plowing to improve the soil.

The orchard should be selected in an area free of atmospheric and water pollution, with convenient transportation and easy access to water and electricity.

The specific deep plowing operations are:

In the autumn of the year before planting, first deep-plow the entire orchard to more than 40-60cm, dig drainage ditches, level gentle slopes into gentle gradients, and spread sulfur powder; the specific amount should be determined according to the measured soil pH status. To ensure evenness, it can be spread and rotary-tilled in two applications.

For rotary tilling and deep plowing in the orchard, the material input per mu before the second rotary tilling is: about 5 cubic meters of peat, about 3 tons of organic fertilizer, and sawdust or bark with a diameter of 3-5cm with a mulching thickness of 5-10cm, 30-50 cubic meters per mu.

To avoid nitrogen deficiency caused by sawdust, it is also necessary to add 15kg/mu of urea, or other types of nitrogen fertilizer, together with the sawdust. Ensure that all materials are mixed evenly with the orchard soil, and after ridging, the improved soil basically all returns to the ridges.

2. Variety selection and planting

Choose varieties suitable for the local climate to plant; planting can be done in spring, autumn, or winter.

Choose 1-2 year old seedlings with a plant height of more than 30cm and a main stem base diameter of more than 5mm; container seedlings are recommended. The plants should be robust, with well-developed root systems and no obvious damage.

At least 2 or more varieties of the same type and with relatively consistent flowering periods should be planted in the same plot to facilitate mutual pollination. The general variety configuration ratio is 1:1 or 1:2 or 1:3.

When planting, ensure the root system is spread out and the seedling is upright; while covering with soil, gently lift the seedling upward, then firm the soil so that the roots are in close contact with the soil. The planting depth should be slightly higher than the original soil mark of the seedling in the nursery or container by 2-3cm.

3. Field management

After planting, carry out reasonable field management; watering, temperature, topdressing, and so on must all be appropriate.

1. Watering

Irrigation must be carried out before the plants show wilting. The determination of irrigation frequency should depend on the soil type. Sandy soil has weak water-holding capacity and is prone to drought, so it needs frequent checking and irrigation; soil with high organic matter content has strong water-holding capacity, so irrigation can be appropriately reduced, but on this type of soil, black humus soil sometimes appears to be moist while actually already dry, which can easily cause misjudgment and requires special attention.

2. Temperature

The absolute minimum temperature ≥-15℃, and the average temperature in January-February ≤7.2℃ for more than 500 hours.

3. Topdressing

The topdressing periods are during the leaf bud germination stage and before and after flowering, mainly with quick-acting fertilizers; it is recommended to combine with drenching 300 times diluted Sea Elf biostimulant root application type; after fruit harvest, a small amount of phosphorus and potassium fertilizer can be applied to avoid excessive nitrogen fertilizer causing excessive growth of tender branches, and to promote root growth and robust branches.

4. Pests and diseases

During the blueberry growing period, pest and disease control must also be carried out.

Blueberries have few pests and diseases; common ones include powdery mildew and downy mildew; insect pests include aphids, mites, fruit flies, longhorn beetles, and scarab beetles.

Attention should be paid to prevention first and integrated control, protecting and utilizing various natural enemies, maintaining ecological balance in the blueberry orchard, giving priority to physical control and biological control, and using chemical control when necessary, but using low-toxicity, safe, or biological-source pesticides, and paying attention to the safe pre-harvest interval.