curled leaf margins?

[WiltedRoots]

title says it all......ive looked around and cant find anything on it.
i got one plant with this
The leaf margins are curled up but the tip is still straight. All of the leaves look very waxy compared to others
and on some of the older leaves the curled up margins are burning, but not very noticable.

Any help on what this is?.....deficiency, too much nutes, genetics?

info:
bagseed, 2 gal pot (2/3 Miracle grow, 1/3 perlite,2 tbsp garden lime), from seed, started flower 10/9, still has yet to show sex, under 400 HPS+100W CFL's

EDIT: at least MG aint clay

 

[{Lotus}]

What is your ph?Temps?watering schedule?What nutrients are you using and how much how often?Any pics?

 

[WiltedRoots]

ph- i have no clue
temps- about 80day 65 night
water- whenever the pot gets light(havnt had to water in a while since i just transplanted a week ago and the roots are still growing into it)
nutes- none....unless u include the MG potting soil

sorry no pics

i might add it is growing alongside 3 other plants in the same conditions and they are fine( soil mixes might be slightly different[ex more lime/ perlite, less lime/perlite])

also, this plant was topped at 3rd node(i know.....), was bleached by light, and was cutback to only new growth(because of light bleach) during veg

 

[{Lotus}]

hmmm..Pics would be ideal but you said you do not have none..No worries..From what you are saying im looking more into this

3) Margins of the leaves are turned up, and the tips may be twisted. Leaves are yellowing (and may turn brown), but the veins remain somewhat green. >> Magnesium (Mg) deficiency. b) If not, go to #4.

4) Leaves are browning or yellowing. Yellow, brown, or necrotic (dead) patches, especially around the edges of the leaf, which may be curled. Plant may be too tall. >> Potassium (K) deficiency. b) If not, keep reading.

A ph meter would be ideal as well...


Have you checked this out yet> http://www.icmag.com/ic/showthread.php?t=11688...Any pics in there you can relate to?

 

[sproutco]

ph- i have no clue

nutes- none....unless u include the MG potting soil

You have not tested ph? Directions are in my signature. You can use cheap ph test strips in the range 4-7 from a petstore in the aquarium section.


Does your mg soil contain slow release fert balls that last 3 months? It might say this on the bag. This is not really good to use. If it does not, you need to use a npk + micros fertilizer. I am sure your ferts in the regular mg soil have run out.

In a veg fert you want:

>nitrogen in the form of nitrate and little urea or ammonia nitrogen
>2-1-2 ratio nitrogen, phosphorus, potassium
>contain all the micros: iron, manganese, zinc, copper, boron, molybdenum
>contain calcium and magnesium if no dol. lime is in the soil or you need to boost levels
>contain sulfur if no gypsum added at planting to the soil or other sulfur based ferts are used
>potassium chloride not in it; instead potassium nitrate, pot. sulfate, or monopotassium phosphate instead

Be sure to adjust the ph of your fert water after mixing for best results.

Tip: If you add epsom salts and powdered gypsum at 1/4 teaspoon of each per gallon of water (3.8L) this provides calcium and magnesium. Your nutrient solution will be complete if it contains npk and all the micros. Using epsom or gypsum also adds valuable sulfur. Add the epsom salts + powdered gypsum every second or third time you use the bloom or veg food when there is dolomite lime in the soil and every time when not or you need to boost levels.

 

[Erin Kerrik]

It sounds like this is a problem with one plant out of multiple? If so, could just be just genes. Although leaves start to curl when they have to try hard to retain water:

• - Leaf tip curl down When leaves curl at the tips and margins the plant is trying to retain moisture. When they curl down this is usually an indication of overfeeding, the feed is too strong on the outside of the root membrane so through reverse osmosis water passes from inside the plant across the root membrane to water down the strong solution outside the plant, it does this in an attempt to even out the pressure on both side of the root membrane.
  - Leaf tip curl up When leaves curl at the tips and margins the plant is trying to retain moisture. When they up this is would be due to an environmental problem rather than a nutrient problem. This could either be due to wind burn, or the lights to close, or not enough air exchange or a combination of all three. I may well be the light is too close for the stage of growth, size of plant or specific variety. Some plants are more sensitive than others.
  - Leaf margin curl Curling down is more associated with problems in the root zone, usually overfeeding (check for curling down leaf tip and other symptoms). It could also be temperature or oxygen problems in the root zone. Curling up margins are more associated with environmental problems and would be caused by the same problems as leaf tip curl up.

http://www.growell.co.uk/pr/46/Talking_to_Your_Plants_Part_1:_Body_Language.html

 

[Guest]

nice

nice

thats about the most rightous info i seen posted in a while ERIN . GREAT INFO!
BOUT TIME WE SEEN A LIL KNOW HOW ,, INSTEAD OF GUESSING !

 

[{Lotus}]

 

[WiltedRoots]

thanks, everyone for the input
especially, EK.... i believe it is an environmental(sp?) situation
The room is in a 5x5x5 area of the basement and 95% surrounded by mylar and/or plastic insulation with no airflow in or out, with a fan creating some air movement within

........the floor is also covered by plastic insulation, and when it rains water collects underneath the plastic (ive had 1 in of water covering half the room, but it drains away in ~15 min)

Sproutco: yes the MG does have nute balls

I think im just gonna see how it plays out, it is one of 8 plants(all still not showing sex, 4 in on 10/9 and 4 in on 10/16). If my plans work out according to how i want them to then it will be 1 of ~60, so im not too worried about 1 plant not working out in my conditions. however i do plan on adding some kind of air exchange with a scrubber, and a 600 HPS (held back by money)

Ill let yall know if it gets better/worse in the next week or so.......and see if i can get a cam

EDIT: just to try and confuse you more, the newer leaves have curled up margins and curled down tips.....

 

[efeldmaz]

I have the sane problem in coco at the moment. My pumps were to strong for my drip system so they were over watered. Other than maybe 25% of them curling down they look really healthy first week of flower do you think this will stunt them still?

 

[Nojeiill]

Similar issue with leaves curling upward

Similar issue with leaves curling upward

Ok - autoflowering AK-74 seeds. Germinated well, transplanted into a solo cup when small and recently into a 10" approx 2 gallon pot. Have 3 total plants, 1 of which was the first to grow and is growing the biggest, however the leaves are begging to curl upward. The other 2 are fine however. Use water at approx 5.8 ph and using Black Gold all natural potting soil plus fertilizer with .05 total nitrogen , .00006 water soluble nitrogen and .004 water insoluble nitrogen. Soil contains 44-55% peat moss. The plants are in house under a couple fluorescent(CFL) lights approximately 4-6 inches from the plants. I water when the soil seems dry to the tough and have had no issues until this point with the one plants leaves growing up, I am a beginner in the process so any help would be very helpful and please try and explain in the most laymans terms! Thanks you and all the best!