Another reason to move away from HPS

[seventhchild]

. What next...a warning that sunlight might be damaging to our cannabis plants...?

"Our results show that photodamage to PSII by
sunlight is primarily associated with UV and yellow
wavelengths (Fig. 5), "quote from PDF..................ok so the article does say that but sometimes what is seemingly bad to cannabis is good for the grower.
we cut back / remove nitrogen during flowering = leaf dies,stress a bud to get hermies=femmed seed, provide extra UV =resin changes.........these methods have evolved over the past 40 years because we exchange info and try new things. i will soon be adding far red light to my grow to see if it has an affect not because i feel my smoke "isn't good enough" but only because i'm curious by nature. now i'm curious about this yellow light damage....what is its affect on pot? good/bad? pure LED growers could tell us rather quickly....any volunteers ?

seventhchild Reviewed by seventhchild on 07-11-2010. Another reason to move away from HPS As it turns out, photodamage has an action spectra. It looks a lot like an HPS plus a UV light to me.... http://www.plantphysiol.org/cgi/reprint/153/3/988.pdf Rating: 5