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Valoya trial demonstrates up to 30% higher biomass with Lumi-VF spectrum.  

Reading Time: 4 minutes

The success of vertical farming of salads, leafy greens and herbs rests upon efficient production of biomass. What are growers interested in? Fast growth, more biomass and yield, and high-quality plants. All the while, this has to be done with efficient lighting to reduce energy costs involved.

Enter Valoya’s new spectrum: Lumi-VF.

Figure caption: Lumi-VF is available in the newly launched LL-series: slim, sleek, and dimmable, these are perfect for multi-tier installations and vertical farms. Easy-to-clean and easy-to-install.  

Continuing our rich history of leading the way when it comes to creating plant growth spectra, we’ve taken another leap as our team has developed a new spectrum for the efficient production of biomass in vertical farming settings.

Our approach has always been scientific, to-date conducting over 650 plant trials with over 300 species/varieties. This was no exception either, and Lumi-VF has undergone rigorous testing to create a spectrum which hits all the right points: efficient, white in appearance and pleasant to work under, and increasing plant biomass.

We put Lumi-VF to the test against a white spectrum as well as a red and blue spectrum from another lighting brand under controlled conditions inside a growth chambers. We are excited to now share these results below, and you may even be surprised by the performance of Lumi-VF.

First though, let’s look at the numbers that went into this trial:

How many?

864 individual plants used.

3,402 individual measurements taken.

Where?

Growth chamber with controlled temperature, humidity, and CO2. Helsinki, Finland.

What was measured?

Chlorophyll content, flavonol content, plant height, fresh weight and dry weight biomass

Which species?

Lettuce and basil

Figure: Basil Dry weight

Figure: Lettuce Dry Weight

As can be seen, Lumi-VF can lead to a staggering 30% increase in biomass. Not only producing all-round larger basil and lettuce leaves, but demonstrably increasing the leaf size in Basil – which is a key desirable trait for herbs where leaves are packing all the flavour.

Both lettuce and basil significantly increased in biomass compared to plants grown under a regular white spectrum or red and blue spectrum. So how is it that Lumi-VF outcompetes other types of white spectra?

Not all white spectra are the made the same.

Whilst white spectra more-or-less look the same to the human eye, to plants they are very different. That’s what sets Lumi-VF apart and that’s what has always been the bread and butter of Valoya’s work.

Lumi-VF spectrum has been the result of careful studies and trials to find the balance of all wavelengths from blue, green, red and far-red to produce a spectrum which appears white to the human eye, but produces enhanced biomass growth in lettuce, herbs and leafy greens.

Amazingly, we have achieved this all the while maintaining a high-efficiency white light, at 2.8 umol/W.

Figure caption: As it is white in appearance, Lumi-VF means that the quality of plants can be easily observed during the growing process, and it is a pleasant environment to work under. It is a highly efficient white spectrum, which has been proven under scientific trials to increase biomass in plants.  

How would we sum up the trial?

Lumi-VF exceeded all expectations, leading to significantly larger increases in biomass in lettuce and basil compared to white spectra and red and blue spectra from other lighting companies. This increase was as large as 30% higher biomass.

Where can I find out more?

If you are interested in other results that we have with Lumi-VF, or a free quotation for a light plan then please don’t hesitate to contact us at sales@greenlux.com.

The blog posts are written by Valoya’s biologists and engineers. All of the content is original and is aimed at helping growers and researchers get a better understanding of the LED grow light technology.

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