Thoughts on this then? Obviously plants do use uv to inform themselves of what growth strategy is best.
"When it comes to UV radiation, there are several other photoreceptors responsible for absorbing those wavelengths. Cryptochromes, phototropins, and Zeitlupe (ZTL) are the three primary photoreceptors that mediate the effects of UVA. UVB light is primarily mediated by the UV-R8 monomer.
It has been proven that UV light influences photomorphogenic responses including gene regulation, flavonoid biosynthesis, leaf and epidermal cell expansion, stomatal density, and increased photosynthetic efficiency. However, don’t forget that UV radiation can also damage membranes, DNA, and proteins.
That’s why many plants undergo photomorphogenic changes designed to protect them from these rays when their photoreceptors sense the presence of radiation. For example, numerous agricultural crops can synthesize simple phenolic compounds and flavonoids that act as sunscreens and remove damaging oxidants and free radicals.
In certain crop species, these*phenolic compounds*can be extremely desirable and it can be beneficial to the farmer to enhance this aspect of production.
How can growers use UV energy without causing damage to their crops?
Although this is a fairly recent field of botanical science, there are reports of dramatic increases in essential oil production by flowering crops grown under lightbulbs with higher UV output. Modern metal halide (MH) and*ceramic metal halide*(CMH) lamps often include precisely calculated and optimized amounts of UVA and UVB output.
High UV bulbs are generally recommended for use in the last two weeks of a flowering cycle once the generative development is completely established. This allows for a crop to continually develop in size and growth vigor while also protecting the flowers and canopy with increased resin production.
Like all aspects of horticulture, balance is the key to effective UV use. Too much or incorrect ratios of*PAR/UVA/UVB will not help, but the correct amounts could encourage some incredibly useful results.
Timing is also an important part of UV application. When given UVB throughout the entire growth cycle, sensitive plants such as leafy greens often display reduced growth (plant height, dry weight, leaf area, etc.) and photosynthetic activity.
Generally, the effectiveness of UVB also varies both among species and among individual strains or genetics of a given species. If you’re looking to utilize UV in your garden, it’s worth discussing with your local hydroponics store about the best approach for your chosen plant species.
Overall, it’s worth discussing and researching the best applications of UV in your garden whilst catering to your specific plant’s physiological requirements.
If we use this technology correctly, we can enjoy the delicious benefits of plant sunscreen. This means your flowers will smell better, your fruit will taste superior, and your herbs will have a higher potency in the kitchen.
Enjoy the tan!"