Currently, China has 2 million mu (approximately 133,333 hectares) of strawberry planting bases. Powdery mildew is a common disease during strawberry production. UVB lamps for controlling strawberry powdery mildew have been commercially applied in Japan, the Netherlands, the United States, and other countries. The core technology involves low-dose nighttime irradiation combined with reflective film, achieving 85%–100% control efficacy against powdery mildew, reducing pesticide use by 60%–90%, and improving fruit quality. Currently, most farmers still use sulfur fumigation, which causes significant damage to greenhouse films, reducing their lifespan from five years to two years. Using UVB lamps can reduce the cost of greenhouse film damage. Currently, UVB lamps are the dominant technology in the US, European, and Japanese planting markets.

Ⅰ. Japan Agricultural Research Institute 's Year-Round Control Trial ( 2015–2017 )

Scene: Connected greenhouse (Varieties: Akihime, Toyonoka)

Equipment: Custom UV-B fluorescent lamp (305–315 nm)

Procedure: From planting to harvest, 3 hours each night (illuminance 4–15 μW/cm²).

Effect:

The incidence of diseased fruit decreased by 84.3% compared to the control; irradiation four times a week reduced it by 54.8%.

Pesticide application was reduced to 4 times per season (compared to the conventional 16 times), and the disease rate of fruit was only 0.1%.

Mechanism: Induces the expression of disease resistance genes such as PAL and CHS, and accumulates phytoalexins.

Ⅱ. Green Control Base in Changping, Beijing, China ( 2016 )

Scene: 600㎡ strawberry greenhouse (Main varieties: Hongyan, Zhangji)

Equipment: UV-B lamp + silver reflective film

Program: 21:00–00:00 (3 h/day), illuminance 5–12 μW/cm²

Effect:

Powdery mildew incidence: Control group 38.7% → UV-B group 5.2% (control efficacy 86.6%)

It replaces sulfur fumigation, leaves no pesticide residue in the greenhouse, and ensures safe pollination for bees.

Fruit firmness and soluble solids content increased by 5%–8%.

Ⅲ. Comparison of different dosages at Jiangsu Academy of Agricultural Sciences , China ( 2017–2019 )

Scene: Glass greenhouse (Variety: Zhangji)

Equipment: Adjustable UV-B lamp (310 nm)

Gradients: 0.25, 0.5, 0.75 W/m²; 2, 3, 4 h/day; intervals: 0/1/2 days.

Optimal solution: 0.5 W/m², 3 h/day, 1 day interval

Effect:

Powdery mildew disease incidence: Control group 42.3% → Treatment group 3.1% (control efficacy 92.7%)

The treatment also controls gray mold with a 79.88% efficacy rate, and reduces aphids and spider mites by over 60%.

Ⅳ. Commercial Cultivation Applications at the University of California ( 2018–2020 )

Scenario: 1.2 hectares of elevated strawberry cultivation (varieties: Fronteras, Victor)

Equipment: UV-B lamp strip (311 nm, 20 W/m) + automatic control system

Procedure: Twice a week, 2 hours at night, dose 200 J/m²

Effect:

Powdery mildew severity: Control group 24.4% → Treatment group **<2%** (control efficacy 92%+)

Pesticide costs decreased by 65%, and the rate of high-quality fruit increased by 12%.

    The germination of powdery mildew spores and the growth of mycelium have extremely high requirements for the wavelength of ultraviolet light—only UVB ultraviolet light of 280-320nm can effectively destroy the DNA structure of the pathogen and inhibit its reproduction.

As a long-established enterprise in the domestic ultraviolet (UV) lamp industry, LIGHTBEST has focused on the research and development and production of UVB lamps for over 10 years. Its products, with their three core advantages— high-transmittance glass tubes, rare-earth phosphors, and mature technology —have become a "disease control magic weapon" for agricultural growers. UVB light penetrates directly through leaves, acting on the spores and mycelia of powdery mildew. UVB ultraviolet lamps have higher ultraviolet intensity and better transmittance than ordinary lamps.

    LIGHTBEST uses phosphors doped with rare earth elements (Europium and Terbium) , emitting UVB light with a peak value precisely falling within this "golden band," and boasting a spectral purity of up to 98%. It eliminates stray light (such as UVC or visible light), effectively targeting plants like a "precise injection," killing pathogens without harming plant cells. Many growers worry that UV lamps might cause plants to "grow excessively" or "yellowy." LIGHTBEST 's UVB lamps not only contain UVB but also appropriate amounts of UVA and visible light , mimicking the spectrum of natural light. This effectively suppresses powdery mildew without affecting photosynthesis, and can even make leaves greener and fruits brighter.

    Let's work together to use the power of light to protect the health of our crops and harvest sweeter fruits!