Strawberry, as a high value-added berry, has extremely high requirements for cleanliness, humidity and pest control of the growing environment. In traditional planting. Problems such as soil continuous cropping barriers. Cateplexy disease at seedling stage. Gray mold disease at flowering stage. And pow-mildew in fruits occur frequently. The excessive use of chemical pesticides not only easily leads to excessive pesticide residues. But also destroys soil microbial communities. Affects the survival of pollinating insects such as bees. And affects the quality and sustainable planting of strawberries
Hypochlorous acid (HClO). As an efficient and broad-spectrum green disinfectant. Has unique advantages: Its bactericidal mechanism is to destroy the microbial cell membrane and decompose nucleic acid. The killing rate of bacteria, fungi and viruses is more than 99.9%. And it is quickly decomposed into water and sodium chloride after the action. There is no residue and no irritating odor. And it will not cause pollution to strawberry plants. Fruits and soil environment. The hypochlorous acid generator can prepare hypochlorous acid solution by electrolyzing salt (or dilute hydrochloric acid) on site. Without storing high concentration of chemicals, safe operation, low cost. Perfect fit for strawberry green planting needs.
Key application scenario of hypochlorous acid generator in strawberry cultivation
1，Soil disinfection: break the continuous crop barrier, build a solid growth foundation
In the continuous cropping of strawberry. The accumulation of pathogenic bacteria (such as root rot bacteria) and nematodes in the soil easily leads to the weakness of plant growth and yield reduction. Traditional soil disinfection relies on fumigants such as methyl bromide. Which pollute the environment and has high cost. While hypochlorous acid generator can achieve green disinfection:
Operation: 1-2 weeks before planting. Irrigate the soil evenly with 50-100ppm hypochlorous acid solution prepared by the generator at the rate of 20-30 liters per square meter. Or combine with drip irrigation system for 2-3 days; If greenhouses are used for planting, the clay can be covered with plastic film for 3-5 days to enhance the disinfection effect.
Application effect: It can effectively kill Fusarium, Phytophthora and other pathogenic bacteria and root nematode larvae in soil, and reduce the incidence of root rot and stem base rot by more than 80%. At the same time, it retained beneficial microorganisms in the soil. Improved soil air permeability, promoted the development of strawberry root system. And increased the survival rate of seedlings to more than 95%.
2，Seedling protection: protect the seedlings and reduce the risk of disease.
The resistance of strawberry at seedling stage (seedling stage, transplanting slow seedling stage) is weak. And it is susceptible to cataplexy disease and blip disease. Hypochlorous acid generator can be targeted protection:.
Seedling period: Soak the seeds with 30-50ppm hypochlorous acid solution for 15-20 minutes before soaking to kill the bacteria carried on the surface of the seeds. Before using the seedling matrix. It is recommended to spray the hypochlorous acid solution at the ratio of 1:500. Mix it well, pile it for 24 hours and then plate it to prevent the matrix from carrying bacteria.
Transplanting slow seedling stage: within 3 days after transplanting. Spray the foliar and root soil of the plant with 20-30ppm hypochlorous acid solution. Once every 2-3 days. For 2-3 times in succession. Which can effectively prevent the disease of slow seedling stage and improve the survival rate of transplanting.
3，Growing period and flowering period: green prevention and control to ensure the safety of pollination
Strawberry is prone to gray mold and powdery mildew during the growing period (from bud to fruit expansion). The fungicidal effect and pollination safety should be taken into account during the flowering period.
Disease prevention: Spray with 20-30ppm hypochlorous acid solution every week on the surface of plant leaves. Leafstalks and fruits (especially on the back of leaves) to form a protective film and inhibit the growth of pathogenic bacteria; In case of high temperature and humidity (such as humidity in the greenhouse is higher than 85%). It can be shortened to once every 3-4 days.
Special protection during the flowering period: during the pollination period of bees. Select 15-20ppm low-concentration hypochlorous acid solution. Spray in the morning or evening when the activity of bees is reduce. Avoid direct spraying of bees; Hypochlorous acid has no residue, no odor, will not affect the pollination of bees, and will not cause fruit pollution.
4，Fruit harvest and harvest: improve the quality and freshness, extend the shelf life
Strawberry fruit has thin, juicy skin and is susceptible to mechanical damage and bacterial contamination during harvesting, leading to postharvial decay:
Before harvesting: 1-2 days before harvesting, spray the fruit surface with 10-15ppm hypochlorous acid solution to kill the bacteria attached to the surface and reduce the risk of decay after harvesting. Harvesting tools (scissors, basket) were soak in 50ppm hypochlorous acid solution for 30 minutes and then dried for use.
Post-harvest preservation: After harvesting, soak the strawberry fruit in 10-15ppm hypochlorous acid solution for 3-5 minutes (gently stirring), rinse with sterile water after removing, drain and then package; Hypochlorous acid can kill fruit surface bacteria, inhibit ethylene production, extend the shelf life of 2-3 days, and does not affect the taste and flavor of the fruit.
The core advantage of hypochlorous acid generator
1，Green safety: no pesticide residues, no secondary pollution, in line with green food, organic strawberry planting standards, ensure food safety;
2，Controllable cost: the raw materials are only salt and water (or dilute hydrochloric acid), and the preparation cost is low. Compared with the purchase of finished disinfectant, it saves more than 50% of the cost;
3，Convenient operation: the equipment is small in size and movable. It can be prepare on site in the greenhouse or in the field without professional and technical personnel, and farmers can get start quickly.
4，Broad spectrum and high efficiency: It has killing effect on common strawberry disease pathogens and soil nematodes, and has multiple functions of disinfection, antisepsis and fresh-keeping.
Under the trend of strawberry green planting, hypochlorous acid generator with the advantages of “on-site preparation, green no residue, low cost, and multi-function adaptation” has become an ideal choice for cracking the pain points of strawberry planting disease prevention and control, soil continuous cropping, and post-harvest preservation. From soil disinfection to fruit preservation, from seedling protection to flowering prevention and control, hypochlorous acid generator protects the whole process of strawberry growth, which not only ensures the quality and safety of strawberries, but also helps farmers to improve quality and efficiency, injecting new impetus into the sustainable development of strawberry industry.