Westland Tech., recently received a feedback from our Russian greenhouse rose grower client.
This record was lasted from September 2nd, 2023 to March 30th, 2024.
And PPFD was recorded by Everfine PLA-30 PAR value meter.
During the light supplement period, the total amount of PAR( Photosynthetically Active Radiation ) in the LED grow lights equipped greenhouse and the regular greenhouse was 3193 μmol/m² and 2365 μmol/m² respectively.
As shown in chart, after supplementary lighting, the total amount of PAR received by the crops increased by 35%.
What Result Grower Get?
Compared greenhouse rose without LED grow lights, roses empowered with LED grow lights, the growth condition is better, the leaf area is larger, the leaf color is darker and more shiny, the stem is thicker, the circumference of the flower bud is larger, and the proportion of grade A flowers has also increased. The color also became brighter after fill lights.
Results
Before & After
| Aspect | Before | After |
|---|---|---|
| Flower Quality | Average color and petal texture; flower shape and fragrance below expectation | More vivid colors, fuller flower shape, improved overall quality |
| Flower Stems | Thin and weak stems, prone to bending or breakage | Thicker, stronger stems with enhanced support strength |
| Leaves | Pale and thin leaves, sometimes dull in appearance | Darker green, broader, thicker leaves with healthy texture |
| Overall Plant Performance | Moderate growth and disease resistance | Noticeably higher yield, stronger resistance to diseases |
What Make This Happened?
Thanks to Westland's HLEDTLR 1000W LED grow lights R85G5B5FR5 spectrum.
|
Lights |
Present in Sunlight |
Present in R85G5B5FR5 |
Role in Rose Development |
|
Blue (450 nm) |
15–20% |
5% |
Leaf growth, compact form, chlorophyll synthesis |
|
Red (660 nm) |
15–25% |
85% |
Boosts photosynthesis, triggers flowering, enhances petal color |
|
Far-Red (730 nm) |
Very little |
5% |
Accelerates flowering, elongates stems, improves flower shape |
|
Green (520–580 nm) |
Moderate |
5% |
Penetrates canopy, boosts lower leaf photosynthesis |
Red light plays a key role in plant photosynthesis. It can effectively promote the elongation of rose stems and the accumulation of carbohydrates. Adequate red light can accelerate the transformation of roses from vegetative growth to reproductive growth, prompting roses to bud and bloom earlier and increase the number of flowers.
Infrared light can regulate the photoperiodic response of rose plants, affecting their perception of the length of day and night, and has an auxiliary effect on the regulation of the flowering time and flowering period of roses. It also participates in regulating the hormone balance in the rose body and promotes the overall growth and development of the plant.
Green light can regulate the stomatal conductance of rose plants, affect gas exchange and water transpiration, and help improve the absorption and transportation of nutrients by roses, allowing the plants to grow stronger.
Blue light has an important influence on the morphological construction of roses. It can regulate the size, thickness and shape of rose leaves, enhance the phototropism of roses, make the plant more compact and the leaves more reasonably arranged, and increase the content of some secondary metabolites in roses, which helps to improve the quality of roses.
|
Growth Stage |
Combined Natural + R85G5B5FR5 Lighting Effect |
|
Vegetative Stage |
Red light increases photosynthesis; blue light controls elongation |
|
Flower Induction |
Far-red triggers early flower initiation; spectral control helps synchronize flowering |
|
Blooming Stage |
Red + far-red maximize flower number, size, and color saturation |
|
Harvest & Post-Harvest |
Far-red improves stem length; flowers are more upright and commercially appealing |
According to Russian grower, the roses grow better with higher yields, better quality, and improved disease resistance. During the entire lighting period, the yield per unit area increased by up to 63%.
Contact us for this excellent performance HLEDTLR 1000W.