Growing with added UVA and Far Red.
Photosynthetic Active Radiation or PAR refers to the spectrum of electromagnetic radiation that is visible as light. Plants use this light energy to drive photosynthesis, grow and reproduce. The spectrum is measured in nanometers (nm) and for many years it was agreed that the range of visible light (PAR) sits between 400nm and 700nm. At the low end of the PAR range is blue light and at the upper end is red light.
Recent plant research suggests that expanding the spectrum of light outside of the “traditional” PAR range has significant effects on plant behaviour and that usable range is 380nm to 780nm.
The Dio-Tech UVA/FR Light Bars does just that. It extends the spectrum to include not only visible light, but also UVA and Far Red, for optimal plant performance.
What are the benefits of UVA?
Electromagnetic radiation with a wavelength between 315nm and 400nm is classed as UVA. This wavelength induces a stress response within the plants, much as it does in humans, to develop compounds that will protect its cells from being damaged by prolonged exposure.
Receiving UVA radiation stimulates the plants natural defences and encourages it to develop thicker, waxier leaves. This helps protect the plant against biotic stress factors, like pests, fungal and bacterial pathogens. Research also suggests that UVA deters certain species of sucking insects.
Most importantly, exposure to UVA during the flowering period stimulates the production of resin, terpene and flavonoid compounds, and increases biomass.
The benefits of