a mongo frog
Well-Known Member
science is proof..... time to start thinking....
Can drops of water on your leaves cause hotspots?
- Thread starter Kaendar
- Start date
UncleBuck
Well-Known Member
way to contradict yourself twice with the same study.
"The problem of light focusing by water droplets adhered to plants has never been thoroughly investigated, neither theoretically, nor experimentally"
"If the focal region of drops falls exactly on the dry plant surface intensely focused sunlight could theoretically start a fire," Horvath said. "However, the likelihood is reduced as the water drops should evaporate before this, so these claims should be treated with a grain of salt."
see how they use the words could, would, and should? it's the same as me saying that jesus would give me a good blowjob if i asked him to, because jesus is cool like that and goves good blowjobs.
UncleBuck
Well-Known Member
"The problem of light focusing by water droplets adhered to plants has never been thoroughly investigated, neither theoretically, nor experimentally"
greennewfie
Active Member
yes man 1 or 2pm in the day usually never early or late its a long hike so always afternoon waterings
a mongo frog
Well-Known Member
please dont do that any more if its over 85 degrees. thats to hot.
Kaendar
Well-Known Member
UB fail is hilarious. Way to cherry pick. Nobody had expiremented with it scientifically, until now.
"In sunshine water drops residing on smooth hairless plant leaves are unlikely to damage the leaf tissue," summarised Horvath and co-authors. "However water drops held by plant hairs can indeed cause sunburn and the same phenomenon can occur when water droplets are held above human skin by body hair."
"In sunshine water drops residing on smooth hairless plant leaves are unlikely to damage the leaf tissue," summarised Horvath and co-authors. "However water drops held by plant hairs can indeed cause sunburn and the same phenomenon can occur when water droplets are held above human skin by body hair."
FresnoFarmer
Well-Known Member
lmfao.....science......proof......links
rofl
rofl
cannabineer
Ursus marijanus
Sunburn yes, but not sun ... burn. Droplets don't focus enough wattage. While the temps in the light cone are theoretically high enough, at that small scale plant tissue is an effective heat sink/dissipator. cn
Kaendar
Well-Known Member
Thats all the point I was trying to make. I never said it would cause leaves or plants to burst into flames.. only give a little burnt spot.
UncleBuck
Well-Known Member
did you miss the word "thoroughly", little chris brown?
FresnoFarmer
Well-Known Member
UncleBuck
Well-Known Member
little chris brown fails again. note where he says that a drop of water can cause a forest fire.
greennewfie
Active Member
lol its always over 85f or 30c if thats right its been the hottest dryest summer in years here as well, no problems or burns girls are happy cant avoid spraying because gotta keep bugs away lol and cant just hike up a mountain every night to spray lucky i can get there during the day so just praying all works out for us!!
a mongo frog
Well-Known Member
only trying to point out that when foliar feeding a good compost tea or a sea weed/kelp foliar in direct sun light over 85
degrees. that the harsh ultraviolet rays have a great chance at killing off your awsome beneficial microbes that u r spraying.
Kaendar
Well-Known Member
"..forest fires can be sparked by intense sunlight focused by water drops on dried-out vegetation."
cannabineer
Ursus marijanus
If you want my opinion ( a proposition that I don't regard as established) a burn spot could develop, but even from a larger drop it would be a pinprick of necrosis. My curiosity satisfied ... I would not consider it an important mode of plant morbidity. In fact, the hard-water rings from foliar wetting would cost more in terms of photosynthetic action than the pinprick burns, but still nothing significant unless the water's sort of dirty. I avoid foliar wetting not because I'm worried about light burns, but opaque residue (from hardness and dust) and the real, consequential phenomenon of larger-scale chemical burns when folks spray ionics, even at weak hydroponic values, onto green leaves. cn
Kaendar
Well-Known Member
I never argued the severity of it, just said it could happen.
FresnoFarmer
Well-Known Member
Oh okay......I thought you were saying that it would burn the leaves.....I agree I have heard the UV rays kill off bacteria. I foliar feed with synthetics so it doesn't really matter.
RightyMcquick
Active Member
all this for tiny lil prick sized burns that don't even matter. who started this thread again??? let me go check...