Optimizing Strawberry Growth with LED Light Spectra: A Scientific Approach to Modern Agriculture
In modern agricultural practices, optimizing environmental conditions is essential for maximizing crop yield, quality, and profitability. Among these factors, light plays a pivotal role in influencing plant growth, photosynthesis, and fruit development. This article explores the effects of different light spectra on strawberry growth, supported by scientific research, and introduces Shenzhen Benwei Lighting as a leading provider of agricultural lighting solutions.
The Importance of Light in Crop Cultivation
Light is a fundamental environmental factor that regulates plant physiology, including photosynthesis, morphology, and secondary metabolism. In protected cultivation systems such as greenhouses, natural light is often insufficient, especially during winter or in regions with limited sunlight. Supplemental lighting has become a critical tool for ensuring consistent growth and high-quality yields.
Traditional lighting systems, such as high-pressure sodium (HPS) lamps, have been widely used. However, light-emitting diode (LED) technology offers significant advantages, including energy efficiency, long lifespan, and the ability to emit specific wavelengths that align with plant photoreceptors.
Scientific Study: Light Spectra and Strawberry Performance
A recent study by Yang Yifan et al. (2025) investigated the effects of different light spectra on the growth and light use efficiency of strawberries cultivated on elevated substrates in a greenhouse. The experiment was conducted from September 2022 to May 2023 using the 'Christmas Red' strawberry variety.
Experimental Design
The study compared five lighting treatments:
CK: No supplemental light (control)
C1: Full-spectrum LED light
C2: High-pressure sodium (HPS) lamp
C3: LED light with red-to-blue ratio of 9:1 (R/B=9:1)
C4: LED light with red-to-blue ratio of 5:1 (R/B=5:1)
Supplemental lighting was provided for 8 hours daily (6:00–10:00 and 18:00–22:00) from December 10, 2022, to February 25, 2023. The researchers measured a wide range of parameters, including plant morphology, photosynthetic pigment content, photosynthetic characteristics, fruit quality, and yield.
Key Findings
The results demonstrated clear benefits of supplemental lighting, with specific advantages depending on the light spectrum:
Plant Growth and Morphology: All supplemental lighting treatments improved plant height, stem diameter, leaf size, and leaf number compared to the control. The C3 (R/B=9:1) treatment resulted in the largest stem diameter and leaf size, indicating enhanced vegetative growth.
Photosynthetic Pigments: The C3 treatment significantly increased chlorophyll a, chlorophyll b, carotenoid, and total chlorophyll (a+b) content, with increases of 14.66%, 13.47%, 25.35%, and 14.36%, respectively, over the control.
Photosynthetic Characteristics: The C2 (HPS) treatment showed the highest net photosynthetic rate, which was 232.10% higher than the control. The C4 (R/B=5:1) treatment led to the highest transpiration rate and stomatal conductance.
Fruit Quality: The C2 (HPS) treatment significantly increased soluble solid content, sugar-acid ratio, and vitamin C content by 29.08%, 96.88%, and 77.26%, respectively. The C3 treatment resulted in the lowest titratable acid content, indicating better fruit sweetness.
Yield Performance: The C3 (R/B=9:1) treatment outperformed all others in yield-related metrics, with increases of 24.66% in average fruit weight, 23.06% in maximum fruit weight, 62.50% in average fruit number per plant, and 102.58% in yield per plant.
Comprehensive Evaluation
Using principal component analysis (PCA), the researchers integrated 27 individual indicators and found that the two main components accounted for 84.787% of the total variance. The comprehensive scores ranked the lighting treatments as follows:
C3 (R/B=9:1) > C4 (R/B=5:1) > C1 (Full-spectrum LED) > C2 (HPS) > CK
This confirms that red-blue LED lighting with a 9:1 ratio is the most effective for overall strawberry growth, photosynthesis, and yield.
Why Red-Blue LED Lighting?
Plants primarily absorb light in the blue (400–510 nm) and red (610–720 nm) spectra, which are critical for photosynthesis and photomorphogenesis. Red light promotes cell division and expansion, leading to increased biomass, while blue light enhances stomatal opening and chlorophyll synthesis. A balanced red-blue spectrum has been shown to optimize plant architecture, photosynthetic efficiency, and fruit development in various crops, including strawberries.
Compared to HPS lamps, LED lights offer precise spectral control, higher energy efficiency, and longer operational life, making them ideal for modern sustainable agriculture.
Recommendation: Shenzhen Benwei Lighting Company
For agricultural producers seeking to implement scientifically backed lighting systems, Shenzhen Benwei Lighting offers a range of high-quality, energy-efficient LED solutions tailored for horticultural use.
Why Choose Benwei Lighting?
Specialized Horticultural LED Products: Benwei provides LED fixtures with customizable red-blue ratios, allowing growers to replicate the optimal 9:1 spectrum for strawberries and other crops.
Energy Efficiency and Long Lifespan: Benwei's LEDs consume less power and have a long operational life, reducing both energy and maintenance costs.
Customizable Solutions: Whether for greenhouse or vertical farming applications, Benwei offers tailored lighting systems to meet specific crop requirements and growth stages.
Expertise and Support: With extensive experience in agricultural lighting, Benwei provides professional guidance and after-sales support to ensure successful implementation.
By integrating Benwei's LED lighting systems, growers can achieve significant improvements in crop growth, yield, and quality, as demonstrated in the study.
Conclusion
The research by Yang et al. (2025) clearly shows that supplemental lighting, especially with red-blue LED spectra, significantly enhances strawberry growth, photosynthetic efficiency, and fruit quality. Among the tested treatments, the 9:1 red-to-blue LED ratio delivered the best overall performance, increasing yield per plant by over 100% compared to the control.
With advanced LED technology from companies like Shenzhen Benwei Lighting, growers can now easily and effectively implement scientific lighting regimens to maximize productivity, profitability, and sustainability.
References
Yang Yifan, Yang Mengyu, Xu Linyun, Song Yiqian, Tang Yuwei, Chen Yanrong, Yu Qingfan, and Xu Jintao. (2025). Effects of Different Light Spectra on Growth and Light Use Efficiency of Strawberries Grown on Elevated Substrate in Protected Cultivation. Acta Agriculturae Boreali-occidentalis Sinica, 34(11). https://doi.org/10.7606/j.issn.1004-1389.2025.11.001
Liu Qing, Lian Haifeng, Liu Shiqi, et al. (2015). Effects of different LED light qualities on photosynthetic characteristics, yield, and quality of strawberry. Chinese Journal of Applied Ecology, 26(6): 1743–1750.
Li Q., Kubota C. (2009). Effects of supplemental light quality on growth and phytochemicals of baby leaf lettuce. Environmental and Experimental Botany, 67(1): 59–64.
Paradiso R., Proietti S. (2022). Light-quality manipulation to control plant growth and photomorphogenesis in greenhouse horticulture: the state of the art and the opportunities of modern LED systems. Plant Growth Regulation, 41: 742–780.
FAQ for LED Grow Lights
Q: Can we get an LED grow light sample for evaluation?
A: We are happy to provide standard samples free of charge for your reference. However, the express freight will need to be covered by the customer.
Q: How do you ensure the quality of LED grow lights before mass production?
A: We offer two options:
You may select from our existing samples, and we will produce according to the chosen model and specifications.
You can send us your own sample, and we will strictly follow your requirements and quality standards.
Q: What is the lead time for LED grow lights?
A: Generally, it takes 25–30 days after sample confirmation to complete production. The exact timeline may vary based on order quantity and product specifications.
Q: Can you print our logo or brand on the LED grow lights?
A: Yes, we support custom branding and OEM services. Your logo can be printed or labeled as requested.
Q: What certifications do your LED grow lights have?
A: Our products comply with international standards and commonly hold certifications such as CE, RoHS, UL, and DLC, among others. Specific certifications can be provided upon request.
Q: Can you customize the spectrum of the LED grow lights?
A: Yes, we offer spectrum customization based on plant growth stages (e.g., vegetative or flowering phase). We can adjust the ratio of red, blue, white, and other wavelengths to meet specific cultivation needs.
Q: How do you handle after-sales quality issues?
A: In case of any quality problems, please provide clear photos or a detailed description. We will confirm the issue and propose a satisfactory solution within three business days, which may include replacement or repair.
Q: What is the warranty period for your LED grow lights?
A: We typically offer a 2–5 year warranty, depending on the product series. Detailed warranty terms will be specified in the product agreement.
Q: Do you provide lighting design or plant lighting solutions?
A: Yes, we offer complimentary lighting layout and spectrum planning services. You can share your planting environment and crop types, and we will recommend suitable LED grow light models and usage plans.
Q: Are your LED grow lights suitable for large-scale commercial farming?
A: Absolutely. Our products are widely used in commercial greenhouses, vertical farms, and hydroponic systems. We can also provide customized solutions for large projects.
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