Uncle Ben
Well-Known Member
6" tall, double potted? What is that?
Plant Moisture Stress - Symptoms and Solutions
- Thread starter Uncle Ben
- Start date
Uncle Ben
Well-Known Member
Look like they need more N.
Uncle Ben
Well-Known Member
When you "upcan", you go from a say.....1 gallon to a 5 gallon. Any other technique is more cannabis forum BS that has little to no merit.
UB
Life Goes On
Active Member
Hey UNC you had mentioned "High Heat - the plant is losing water via it’s leaves faster than what can be replaced by the root system. The leaf responds by leaf margin cupping or rolling (up or down) in order to conserve moisture. Lower the heat and concentrate on developing a large, robust root system by practicing sound plant culture. An efficient and effective root system will go a long way to prevent heat induced leaf dessication and leaf margin curling by supplying sufficient moisture for good plant health. One short episode of high heat is enough to permanently destroy leaf tissue and cause a general decline in the leaves affected, which often occurs to leaves found at the top of the plant located near HID lamps. The damaged leaf (usually) does not recover, no matter what you do. Bummer in the summer. One can only look to new growth for indications that the problem has been corrected." Well my plants are showing the exact signs you mention however I don't think my heat is to high. My grow room temp runs 70-78 and my Humidity stays pretty constant at about 60-62%. My tallest plant is running about 10 in. below my 400W MH. I do however think that maybe I have been underwatering my plants as they are in a 1 gallon nursery pot and I usually water every 2 to 3 days with about 8oz. of water per pot. I noticed that the soil that is exposed at the bottom of the pot from the drainage holes was not very moist so today I watered with 16oz of water and it was enough to moisten the exposed soil at the base of the pot. So with that being said do you think that it was just an underwatering issue, a heat/overlighting issue or a combination of the two? Is my light too close to the plants being only 10 In. away? I read that if it's too hot on the back of your hand that it's too hot for the plants but when I put my hand just above the plant the heat intensity from the light does not seem to be too hot? Any help/advice would be greatly appreciated.
MsApple
Member
UB???? I gotta question, if you haven't already answered it...I couldn't find it, so anyways, Malathion; I know you use it outdoor on a large area, but I have a small area and it's indoor, ummmm...the label doesnt say marijuana, LOL...so how much do I use, do I treat as a tomato plant, or what...cuz it has like a number of different veggies, fruits and flowers....and they all have different amounts! I don't wanna use too much or not enough.... for tomatoes it says 1-1/2 tsp per gal of H2O? Is it good to use on thripes as well? My friend gave me a purple trainwreck plant last night and she is so pretty, but she has thripes...not so pretty! Do those lil fuckers eat holes in the leaves or do they have a dragging mark? Not sure never dealt with thripes....I hate bad bugs!!!!
Uncle Ben
Well-Known Member
If it takes a gallon to throughly wet the pot, then that's what you do. You need to water to the point of a good runoff.
Follow the label instructions for tomatoes. Malathion is good for mites, thrips, aphids, larvae, mealybugs. After 5 days it is safe for consumption being that it will have decomposed into the phosphate from which is was derived. It's an organophosphate pesticide.
Life Goes On
Active Member
Yes thank you UB. I will water to a good runoff from now on. But do you think I should raise my lamp or do you think I was just underwatering?
DaveCoulier
Well-Known Member
Life Goes on, I have plants that are closer than ten inches under 400w MH, and they aren't showing signs of problems. It also depends on your bulb though. Not all bulbs are created equal. Mine is some crappy plantmax mh thats no longer in its prime. I would suggest you get a light meter. Hydrofarm sells a nice one for $30. It'll will be a great help to you. Once you buy it, and start to play with it, you'll wonder why you didn't buy it in the first place.
As for watering, Id say you were under-watering. I give my plants in one gallon growbags around 32 oz of water, and that is enough to saturate the medium. My plants would never get by on 8 oz of water every 2 or 3 days. After 2 days they have to be watered another 32 oz. Anything beyond that and they will start to show signs of water stress(lower limp, yellow leaves). These are plants full in veg though, and 12-24 inches. If your plants are small then just adjust your watering needs.
I would also suggest to tilt your pots sideways(diagonal) after they stop draining from an even position. This will release more of the water from your perched water table and improve conditions for your roots.
If your unsure about heat, get an infrared thermometer gun. They can be bought at home depot, or you can find them at some hydro shops(online or not).
Sorry to be so long winded, but hope it helps.
As for watering, Id say you were under-watering. I give my plants in one gallon growbags around 32 oz of water, and that is enough to saturate the medium. My plants would never get by on 8 oz of water every 2 or 3 days. After 2 days they have to be watered another 32 oz. Anything beyond that and they will start to show signs of water stress(lower limp, yellow leaves). These are plants full in veg though, and 12-24 inches. If your plants are small then just adjust your watering needs.
I would also suggest to tilt your pots sideways(diagonal) after they stop draining from an even position. This will release more of the water from your perched water table and improve conditions for your roots.
If your unsure about heat, get an infrared thermometer gun. They can be bought at home depot, or you can find them at some hydro shops(online or not).
Sorry to be so long winded, but hope it helps.
Hi UB
If you have a second to have a look on my little garden.
What do you think about my plants? That's my first grow and I planted RoadRunner automatic from Dinafem. I wonder why there is that much diference in the way they look and on the 1st picture you can see a hole by the edge of one leaf. What could cause it appear? They used to sit under 250 MH, but swapped bulb for HPS yesterday. They are about 15" away from lamp, sometimes closer if temperature is low enough to drop light down. Two plants at the back are 4 weeks old since hit the surface and the 3rd one (in the front row) is 5 days younger. One of older ones is much taller than her "twin"sister, why? Would they be different strain uncorrectly labelled? Thanks for any feedback
Have a green day
If you have a second to have a look on my little garden.
What do you think about my plants? That's my first grow and I planted RoadRunner automatic from Dinafem. I wonder why there is that much diference in the way they look and on the 1st picture you can see a hole by the edge of one leaf. What could cause it appear? They used to sit under 250 MH, but swapped bulb for HPS yesterday. They are about 15" away from lamp, sometimes closer if temperature is low enough to drop light down. Two plants at the back are 4 weeks old since hit the surface and the 3rd one (in the front row) is 5 days younger. One of older ones is much taller than her "twin"sister, why? Would they be different strain uncorrectly labelled? Thanks for any feedback
Have a green day
Hobbes
Well-Known Member
.
Uncle Ben I'm compiling an ebook as a guide for new growers, I'd like to include your plant symptoms and solution guide if you approve. The ebook is for free download and will be made available to caregivers and medical clubs on DVD to be sold as a fundraiser.
Your symptoms and solution guide is in the Plant Problems chapter, I uploaded it this morning so you could see what it will look like. If you'd like to add pictures or make changes at any time I can update the ebook in a few minutes. If you don't want your work included in the book I can remove it quickly as well.
I've referred to your guide many times and would be honoured if I could include it with the other work. The links are at the bottom of this post.
thanks
Hobbes
.
Uncle Ben I'm compiling an ebook as a guide for new growers, I'd like to include your plant symptoms and solution guide if you approve. The ebook is for free download and will be made available to caregivers and medical clubs on DVD to be sold as a fundraiser.
Your symptoms and solution guide is in the Plant Problems chapter, I uploaded it this morning so you could see what it will look like. If you'd like to add pictures or make changes at any time I can update the ebook in a few minutes. If you don't want your work included in the book I can remove it quickly as well.
I've referred to your guide many times and would be honoured if I could include it with the other work. The links are at the bottom of this post.
thanks
Hobbes
.
bekindbud
Well-Known Member
Uncle Ben I can only imagine how many questions you get from newbees like me and something I notice is that you answer everyone back and that takes a lot of time out but I yet to read you saying...."Leave me alone" instead you handle all objections and questions. You are more like the....... Growing GOD of Ganja!!!!!! I appreciate reading your threads and they are very formative....I take it that my root system is not doing so good??? Also I guess my plant is suffering from moist stress? I just gave my plant Nuetrients for the first time yesterday but only at 50%, I am using Foxfarm Grow Big...Any help on my baby please let me know. Im growing for my mom, she is very sick and I dont want to screw it up like I am now....Help please....Thanks. UB!!! U are the MAN!!!!!!
Uncle Ben
Well-Known Member
Don't know about the hole, most likely a response to some kind of stress, insect damage, etc. Kid with a BB gun?
Regarding heights, keep in mind that just because it has a name doesn't guarantee squat. The seed vendors are in this only for the money and you're making buying decisions strictly on their ads or hype/anecdotal evidence in forums. See my sig....
That would be fine, I'd be honored as long as you give me credit. You don't know how many times others have taken my material, stripped the credit and posed it as their own For example: http://forum.grasscity.com/indoor-marijuana-growing/215941-never-ending-abuse-phosphorous-enhance-flowering.html
Might wanna add my 4 main cola sticky in Advanced too, to your Training chapter. Since RIU will not let me edit it, and if you want, you could take the first post and I could add a FAQ ditty to answer the most redundant questions.
post edit - I took a quick cursory glance and it really looks nice. I looked at the advice contrary to the popular drill of stripping leaves off - good job!
The way you handle this is your biz, but if it was mine, I'd take a Mel Franks common sense approach and strip out as much of the pro-cannabis hype as you can. Cannabis should be grown as a regular plant, a "flowering foliage plant" if you will. BTW, if you don't have Mel Franks old Guide, it's still as solid as the first time it was written back in 1982. He was really ahead of his time. Red Eye Press was selling it cheap.
Here's a few links, the first one from Dave:
http://www.puyallup.wsu.edu/~Linda%20Chalker-Scott/Horticultural%20Myths_files/index.html
About the best white paper on Plant nutrition I've seen. Long, so I doubt if anyone will read it, but that's their problem.
http://www.staugorchidsociety.org/culturewater.htm
http://www.ces.ncsu.edu/depts/hort/consumer/quickref/fertilizer/nutri_def.html
Hmmmmm, something just caught my eye in the 3rd link about P: Rapidly "fixed" on soil particles; when applied under acid conditions, fixed with Fe, Mn and Al; under alkaline conditions fixed with Ca; high P interferes with micronutrient and N absorption; used in relatively small amounts when compared to N and K; availability is lowest in cold soils.
What ahhhhh been preaching.
Well, funny you should post this as I asked some folks to post their growing questions in forums as opposed to PM's. It helps me regarding my time and the input of others is of great benefit.
BTW Dave, that's some good advice there brudder, as usual!
Feller, without a day to day history of what you're doing, it's anybody's guess what's going on. It's hard to look at a plant's photo and give the correct prognosis, see page one but it's obvious they are subjected to some kind of moisture stress.
The only SURE way to success is to learn what makes a plant tick. This gardening thingie is all about balancing out all factors involved in growing.
Good luck,
UB
Hi all
Thanks very much Uncle of us all. You are probably very right saying We get not exactly what they tell you do. We'll see what the end produc tdiffernce is.I dont think there are insects in my tent - couldn't find any. Yesterday evening about 4 hours before end of 20 hours bright period I noticed that the tallest plant got his leaves' (those around flowers) "fingers" dropped down. In the morning after dark perion they where up again. But I noticed curly fingers of one of the top leavs (picture) . Would you say it's to close to my 250 HPS or may be nutrient overdose relaited?I gave that plant 1.2litre of watter with 0.8ml of Bio-Grow, 1.5ml Bio-Bloom and 0.5ml TopMax two days ago. I'm not sure If I underwater them or not. They are in about 3 gallons pots. Any info for NOOB from GOD really apreciated.
Thanks very much Uncle of us all. You are probably very right saying We get not exactly what they tell you do. We'll see what the end produc tdiffernce is
.I dont think there are insects in my tent - couldn't find any. Yesterday evening about 4 hours before end of 20 hours bright period I noticed that the tallest plant got his leaves' (those around flowers) "fingers" dropped down. In the morning after dark perion they where up again. But I noticed curly fingers of one of the top leavs (picture) . Would you say it's to close to my 250 HPS or may be nutrient overdose relaited?I gave that plant 1.2litre of watter with 0.8ml of Bio-Grow, 1.5ml Bio-Bloom and 0.5ml TopMax two days ago. I'm not sure If I underwater them or not. They are in about 3 gallons pots. Any info for NOOB from GOD really apreciated.
Uncle Ben
Well-Known Member
Dave, this one's yours.
Hobbes
Well-Known Member
.
Thanks Uncle Ben. I'll work on your suggestions and incorporate the other material you've offered, then get back to you for suggestions on how I can improve the presentation of your work. I've got your topping pictorial uploaded to the Stem Training chapter with links, when you want to upload the FAQ - or if there's anything else that you'd like to contribute - you have a forum full of great info - please let me know and I'll include it in the ebook.
When I use someone else material I link back to the original thread as well as listing the Author - the general idea behind the whole thread is that even the writing that I consider my own is information that I got from someone else post or web site online. I can't think of one thing that I do in my garden that I haven't seen posted at least a dozen times by a dozen people. Some of the most valuable posts for me are the newbies' when they ask a question that I have never thought of and I have to research the answers - which are almost invariably in the forum somewhere.
The Academy is a work in progress, Weed Science is updated almost daily, I'll be organizing each chapter to make reading easier. If there's anything that you notice in my work that need's correcting or anything in the style of posting for your material that you'd like changed, please post in the Grow Lab thread linked below and I'll get to it right away.
Thanks.
Hobbes
Thanks Uncle Ben. I'll work on your suggestions and incorporate the other material you've offered, then get back to you for suggestions on how I can improve the presentation of your work. I've got your topping pictorial uploaded to the Stem Training chapter with links, when you want to upload the FAQ - or if there's anything else that you'd like to contribute - you have a forum full of great info - please let me know and I'll include it in the ebook.
When I use someone else material I link back to the original thread as well as listing the Author - the general idea behind the whole thread is that even the writing that I consider my own is information that I got from someone else post or web site online. I can't think of one thing that I do in my garden that I haven't seen posted at least a dozen times by a dozen people. Some of the most valuable posts for me are the newbies' when they ask a question that I have never thought of and I have to research the answers - which are almost invariably in the forum somewhere.
The Academy is a work in progress, Weed Science is updated almost daily, I'll be organizing each chapter to make reading easier. If there's anything that you notice in my work that need's correcting or anything in the style of posting for your material that you'd like changed, please post in the Grow Lab thread linked below and I'll get to it right away.
Thanks.
Hobbes