Water Causing Burns on Plant Leaves, a Myth?

i will set the record straight rippa you could piss on your plants and it wouldn't burn reason you got No power period )

Sunlight, in the broad sense, is the total frequency spectrum of electromagnetic radiation given off by the Sun. On Earth, sunlight is filtered through the Earth's atmosphere, and solar radiation is obvious as daylight when the Sun is above the horizon.
When the direct solar radiation is not blocked by clouds, it is experienced as sunshine, a combination of bright light and radiant heat. When it is blocked by the clouds or reflects off of other objects, it is experienced as diffused light.
The World Meteorological Organization uses the term "sunshine duration" to mean the cumulative time during which an area receives direct irradiance from the Sun of at least 120 watts per square meter.[1]
Sunlight may be recorded using a sunshine recorder, pyranometer or pyrheliometer. Sunlight takes about 8.3 minutes to reach the Earth.
Direct sunlight has a luminous efficacy of about 93 lumens per watt of radiant flux, which includes infrared, visible, and ultraviolet light. Bright sunlight provides illuminance of approximately 100,000 lux or lumens per square meter at the Earth's surface.
Sunlight is a key factor in photosynthesis, a process vital for life on Earth.

I for one run 2000 watts per square meter 10,000 watts total and yes i have burnt my plants with water i like to keep humidity high in veg i used to foilage spray 2 hrs after lights off but have since stopped it

jack ripa said:

Hey skip, maybe you need a new prescription.

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Another of your many immature retorts, just like in our PM exchange. Care to mention Poligrip or Depends next? I'm sure they would make some major point scoring points for your lost argument.

DrFever said:

i will set the record straight rippa you could piss on your plants and it wouldn't burn reason you got No power period )

Sunlight, in the broad sense, is the total frequency spectrum of electromagnetic radiation given off by the Sun. On Earth, sunlight is filtered through the Earth's atmosphere, and solar radiation is obvious as daylight when the Sun is above the horizon.
When the direct solar radiation is not blocked by clouds, it is experienced as sunshine, a combination of bright light and radiant heat. When it is blocked by the clouds or reflects off of other objects, it is experienced as diffused light.
The World Meteorological Organization uses the term "sunshine duration" to mean the cumulative time during which an area receives direct irradiance from the Sun of at least 120 watts per square meter.[1]
Sunlight may be recorded using a sunshine recorder, pyranometer or pyrheliometer. Sunlight takes about 8.3 minutes to reach the Earth.
Direct sunlight has a luminous efficacy of about 93 lumens per watt of radiant flux, which includes infrared, visible, and ultraviolet light. Bright sunlight provides illuminance of approximately 100,000 lux or lumens per square meter at the Earth's surface.
Sunlight is a key factor in photosynthesis, a process vital for life on Earth.

I for one run 2000 watts per square meter 10,000 watts total and yes i have burnt my plants with water i like to keep humidity high in veg i used to foilage spray 2 hrs after lights off but have since stopped it

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jack ripa plays with kiddie lighting, he has an 'Easy Bake Oven' lighting setup so he does not experience the things that happen to true growers and because of that he incorrectly believes those things are impossible.

Well, I like playing with trolls as much as the next guy but I have bigger fish to fry right now.

Spent a couple hours under the 4 1000watt hps on super bright or whatever it's called with a mendocino madness clone with the largest visible trichomes I could find. Looked through 30 or so Connies but none had much actual "hair" to speak of. I got a small eye dropper and repeatedly tried to get a droplet to actually suspend off the leaf. I really could not do it. This was with bottled water. I then tried tap water and even added some epsom salt just to see if it would increase the surface tension enough to bead up.

I could not for the life of me get the water to bead up. Can anyone else do this? I would love to see a shot if someone can pull it off. A drop of water suspended on the trichome stalk above the vegetating leaf.

Disappointing to say the least. I then tried to get a good sized bead of water right in the shoot center of the plant and put it 8 inches directly below the bulb of the 1kw. I left it there until the water dried three times. I haven't noticed an effect yet but I have labled the branch and will check it.

The one really good thing about this whole experiment is that I found the beginnings of a small thrip infestation while spending time in the veg chamber. So when I say I have bigger fish to fry, I mean smaller, much smaller.

Anyhow, if anyone gets some photographic evidence of this, I will be super excited.

Yeah, i tried to create fission in my kitchen, i failed so the concept must be bollocks maybe you're just not a scientist

jack ripa said:

Well, I like playing with trolls as much as the next guy

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If that is the case you must really get off playing with yourself.

Spent a couple hours under the 4 1000watt hps on super bright or whatever it's called with a mendocino madness clone with the largest visible trichomes I could find. Looked through 30 or so Connies but none had much actual "hair" to speak of. I got a small eye dropper and repeatedly tried to get a droplet to actually suspend off the leaf. I really could not do it. This was with bottled water. I then tried tap water and even added some epsom salt just to see if it would increase the surface tension enough to bead up.

I could not for the life of me get the water to bead up. Can anyone else do this? I would love to see a shot if someone can pull it off. A drop of water suspended on the trichome stalk above the vegetating leaf.

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Gee. don't I feel the fool now. Your home Mr. Wizard experiment most certainly has proven to be wrong what both your own information and my information said is factual, is true, that can and does happen.

I bet if all the professional researchers who came to the same conclusion read your message they would hang their heads in shame.

Disappointing to say the least. I then tried to get a good sized bead of water right in the shoot center of the plant and put it 8 inches directly below the bulb of the 1kw. I left it there until the water dried three times. I haven't noticed an effect yet but I have labled the branch and will check it.

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Your own words; "none had much actual "hair" to speak of." So you performed home Mr. Wizard experiments on plants with admittedly few trichomes but you want to hold that up as proof positive that both your posted information and my posted information has to have been inaccurate. The fewer the hairs/trichomes the less apt it will be to occur. But at least that was a very amusing attempt on your part.

Anyhow, if anyone gets some photographic evidence of this, I will be super excited.

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If you will really get; "super excited" I suggest that you slip a condom on or grab some tissues or paper towels before reading on.

Watering your garden in the midday sun can burn plants

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Scientists have finally confirmed what gardeners have long claimed: Water droplets can burn certain plants at the wrong time of day.

By Bryan NelsonTue, Jan 12 2010 at 7:18 AM EST Comments

BURNT BOTANY: Plants with hairy leaves are particularly at risk. (Photo: KatyaPalladina/Flickr)
It's part of the entrenched mythology of the gardening world: if you water your plants in the hot midday sun, the droplets can act as a magnifying glass and burn the leaves. But until now, science had been unable to confirm the folklore as fact.


"The problem of light focusing by water droplets adhered to plants has never been thoroughly investigated, neither theoretically, nor experimentally", said Dr. Gabor Horvath of Hungary's Eotvos University.

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Determined to discover the truth, Horvath and his team of researchers conducted a series of computer and experimental studies on the problem, with surprising results. The studies confirmed that plants can be sunburnt from water droplets — and people can too.

The connection lies in the types of plants most susceptible to getting burned. It turns out that water droplets on a smooth surface, such as maple or ginkgo leaves, cannot cause leaf burn. But plants with hairy leaves, such as the small wax hairs of floating ferns, tend to hold water droplets in focus above the leaf surface, magnifying the sunlight. The same principle holds true for water held above hairy human skin after bathing.

Researchers also considered if the same process could potentially start a fire if the light-focusing occurred over dried-out vegetation, but their results were mixed. While fires are theoretically possible, there are some natural factors that make them less likely.

"The likelihood [of a fire starting] is reduced as the water drops should evaporate before this, so these claims should be treated with a grain of salt," concluded Horvath.

Nevertheless, the study was clear about what gardeners and poolside loungers have long known. During times when the sun is most intense, it would be wise to keep yourself and your plants dry.


http://www.mnn.com/your-home/at-home/stories/watering-your-garden-in-the-midday-sun-can-burn-plants[/QUOTE]

Of course you will make the feeble attempt to claim that since the picture of water droplets on top of plant hairs/trichomes is proof of nothing because the picture is not of a cannabis plant.

But when you do that it will only be one more of your weak attempts to blow a smokescreen to obscure the fact that you have been totally incorrect, just another of your feeble attempts to spin the facts into what you desperately wish they would be, yet one more enervatedineffectual attempt made by you to distract people from the visual proof and just one more of your fruitless futile avoidance techniques.

Are you ready to show some of that extreme humbleness you claimed in a PM to me that you show when proven to be wrong?

The longer you wait and the harder you try your plate of humble pie too eat just keeps getting larger and larger and more and more filled.

You are an idiot. That's not weed. Try to keep up. You just like to see yourself type.

If you can show me a burn on weed from water, or the water suspended focusing the light...please do.

I am not reading anything you type ever again. You refuse to roll with the punches but instead are stuck in some weird stalemate with your own mind. Sorry for that buddy, have the last word. I am putting you on mental ignore.

jack ripa said:

You are an idiot. That's not weed. Try to keep up. You just like to see yourself type.

If you can show me a burn on weed from water, or the water suspended focusing the light...please do.

I am not reading anything you type ever again. You refuse to roll with the punches but instead are stuck in some weird stalemate with your own mind. Sorry for that buddy, have the last word. I am putting you on mental ignore.

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[youtube]Y7LDlipCmhM[/youtube]

Born on a farm, raised on a farm and now run same farm. Row croppers irrigate around the clock. Its not like watering your lawn. A center pivot in a 60 acre field takes aprox. 27 hours to make a full round at a 2inch precip rate...........Ripa to say they water in the evening to reduce evaporation to cool the plants is retarded? Um, evaporation is the cooling process. You are a tool that does not have a clue. Just like you saying box elder bugs eat leaves.......funny stuff.

jack ripa said:

You are an idiot. That's not weed.

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As I previously stated:


Of course you will make the feeble attempt to claim that since the picture of water droplets on top of plant hairs/trichomes is proof of nothing because the picture is not of a cannabis plant.

But when you do that it will only be one more of your weak attempts to blow a smokescreen to obscure the fact that you have been totally incorrect, just another of your feeble attempts to spin the facts into what you desperately wish they would be, yet one more enervated ineffectual attempt made by you to distract people from the visual proof and just one more of your fruitless futile avoidance techniques.

Are you ready to show some of that extreme humbleness you claimed in a PM to me that you show when proven to be wrong?

The longer you wait and the harder you try your plate of humble pie too eat just keeps getting larger and larger and more and more filled.


One problem you have is one shared by so many others on grow sites. You like, want and need to believe that there is some magical and mystical horticultural disconnect between cannabis plants and any and every other type of plant. I hate to be the one to have to shatter your illusion, but that disconnect you desperately desire to exist does not exist.

As you yourself stated when you were attempting to rely on farm crops, cannabis plants are not the only plants that have trichomes ... and you were totally correct there.

But what in the wide, wide world of sports causes you to believe that what does occur to one plant with trichomes does not occur to another plant with trichomes? Is if because cannabis produces cannabinoids and other plants do not? Horticulturally speaking that is the primary, and in some cases, the singular difference between cannabis plants and some other plants. Only your extreme level of desperation too be correct has created in your mind a non-existent bigger difference.

You keep desperately attempting to find some way to tap dance around and through both the facts, and also the minefield created by your own damning information, in hopes of creating some miniscule shred of credibility. But you might as well give up your attempts. Each time you try you only make things worse for yourself and push that desired miniscule shred of credibility farther and farther from your grasp.

All I can say is that anyone who listens to you, who accepts what you have inaccurately been claiming, who believes your delusional beliefs is making a terrible error in judgment.

You people are so combative. It amazes me that you actually smoke weed.

Still no one has shown the effect on MJ. Not one person.

Ok, I guess the people here don't like new folks with nonconformist ideas and scientific interest.

I have posted two very serious questions the past few days with no responses. I have also tried to help as many people as possible since I have been here. I don't always get the answers right and I like to be corrected. I feel like I did my best to contribute and have met with nothing but anger and insult. So, bye RIU. I will take my contributions somewhere where people like to learn new things and help people with problems. I can't help y'all with your need to pile on though.

Good to know. Never again. Peace and good luck to you all. I guess I will remove my grow journal and fuck ya all, you don't get to see what I do.

Bye bye then. I'm not even sure why you're still talking in this thread, you've already admired that it happens, even to the extent that you were sure it happens (your words, not mine)... so what's the issue?

jack ripa said:

Still no one has shown the effect on MJ. Not one person.

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So that means that for all your wasted time and efforts you totally failed to supply proof that it does not happen like you have attempted to claim you have.

Cool.

jack ripa said:

Ok, I guess the people here don't like new folks with nonconformist ideas and scientific interest.

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What people here do not like are people who claim personal beliefs to be facts and who spread inaccuracies and misconceptions and when proven wrong to to great extents to attempt to cover that fact with a massive smokescreen.

What people like are facts and not propaganda. That is why what you have been claiming has soundly been rejected.

So, bye RIU

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Take your ball and go home if that's what you need to do just because you can't make up the rules the way you want them too be.

jack ripa said:

You people are so combative. It amazes me that you actually smoke weed.

Still no one has shown the effect on MJ. Not one person.

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who says i smoke weed i sell weed ) hell i probably throw more little nuggets away for hash then you make on a good grow )

Plants like it wet in veg. Depending on your humidity, i spray new clones with water and a couple drops of b52 once a day. They loved it.
Spraying in flower is a no no . There is a window when to spray. Its depends on how strong the mix is to get the burn. Dont spray after week 3.
I always spray before they go off. Dont let water sit on the leaf while under intense light, Its magnified and thats why you get the burn.
Also over watering and spraying the plant will cause dry crumbly leaves. Its mostly the overwatering part.
I wait a couple days after watering before i spray.

I have definately seen first hand how spraying water can damage your plants. First of all, outdoors there is a lot of other factors to be considered. Like when it rains it is generally cloudy, an outdoor plant is more likely to have less direct lighting because of the angle of the light and because of other things shading it, and there is much more airflow which I would think helps to cool off the water/plant and speed up evaporation. An HID on the other hand is full intensity directly above the plants eminating lots of heat.

Here's a pic of my plants I vegged. You can't tell that much from the pictures but I was spraying them and as a result I got a lot of yellow leaves. I assure you it was not from being underfed and not really burned as much as the water sitting for too long. I simply stopped spraying them and the growth was all green since. Also, I sprayed down some plants after I pollinated them and put them back under the light and have some burns on my leafs from that too. Now I'm not saying spraying your plants is bad, I've done it plenty in the past with no adverse effects, but it's not always beneficial and can lead to problems if your not careful. I saw someone the other day built a shade for his light so he could spray his plants, I would recommend something similar if you want to make it rain.

yes...well....
either a newb on his first grow (with a habit for killing indoor plants in general) has the fattest trichs ever....

OR

the silly fool just wandered into his grow room and lazily misted his gals with distilled water and a whole shit load of trichs have tiny sheaths of water covering them making them look huge

i suspect the pistils holding those tiny beads at multiple elevations will give away the whole game...but, i leave the choice to the reader.

Ya this guy went the wrong way about this.
I have burned my seedling with just plain old RO water(and overwater) because of light and temps were 76 max with sentinel controller so ya.
And like said before outdoor you can not compare to indoor to many factors sunny shady cloudy humidity breeze strong wind shit it goes on and on.
But many people soak the shit out of there vegging plant and works great for them all depends but for me I just keep humidity up 60-70 on veg.