ANY IDEA WHAT CAUSES THIS ?

[TotalHeavenClub]

Hi fellow icmagers,
as title says,I'm don't really know what's happening to this plant.
This is an old school skunk cut I was given.ALl the other plants in the room are just fine (different strains though) and other cuttings from the same mother do well to outdoors and in other people's grow room.
At first I suspected a magnesium deficiency but I fed her with mag for two weeks now and the situation does not get much better...
Now I suspect some kind of fungal disease.
anyway,here's the trouble:









Any input or advice welcome !

 

[Guest]

Looks like Nute lockout - what is your pH? Soil or Hydro?

 

[TotalHeavenClub]

hi klutter,
the lady grows in soil and the water is ph 6.2
by the way,Iforgot to tell that this plant has been pollinated.may the seed producing activity cause this ?

 

[Core]

the water is 6.2 thats ok...should be 2 or 3 points up 2 be perfect.....but the soils ph is a diffrent story...and it does look like ph problems....causing Mg lockout

 

[TotalHeavenClub]

hi core,and thanx for the input.
so how should I test the soil's ph ?
Should I water and test what's getting out of the pot ?

 

[Core]

most accurate ime is 20 ml distilled water and same amount of soil...mix it up ...put away for 5 minutes and test slurry....works like a charm...

 

[TotalHeavenClub]

thanx very much,core!
I'll try that and see what I get...
grow on

 

[TotalHeavenClub]

So,I mixed 2 cl of pH 7.0 buffer solution with 2 cl of soil,waited a while,and testedH 6.6
How should I interpret this ?Is it ok,too acidic,not enough ?
I'm not very sure on that one ...

 

[Core]

....ph buffer solutiion.... is that distilled water...i think not....

 

[Core]

you also can meassure runoff but that is't on the mark ime....

 

[scegy]

in school we made ph test like these: 5g of soil, 25 ml of deionized water(destilled) or 5g soil and 25 ml of 1 mol CaCl2 solution if measuring carbonate hardness the same is done with Ca-acetate for GH i think, not sure for this one

soil samples must be taken in the root area not on the surface

u can also measure the runoff but it was supposed to be less accurate method

i think that you just make the tests whichever method you prefere and you'll get the app. results that will serve you good enough

good luck with your probs

 

[Guest]

The simplest method is skip the runoff testing and instead do what many many many other soil growers do - add 1-2tbsp of dolomite lime per gallon of soil.... that will keep the root zone at 6.5 regardless of the water's pH being put into it.

 

[inflorescence]

A Molybdenum deficiency causes leaves to have a pale, fringed and scorched look, along with weird or retarded leaf growth. Yellowing of middle leaves can occur as well as twisted younger leaves which will eventually die. Molybdenum deficiencies frequently resemble a nitrogen deficiency. A Molybdenum deficiency shows older chlorotic leaves with rolled margins and stunted growth. Looks like a nitrogen deficiency but with the red tips moving inwards to the middle of the leaves. Molybendum deficiency will usually show up in the older to middle aged leaves, then it moves to the young leaves. Generally a molybdenum deficiency occurs when sulfur and phosphorus are deficient.

But

When your plants are deficient in phosphorus, this can overall reduce the size of your plants. Not enough causes slow growth and causes the plant to become weak, to little amount of Phosphorus causes slow growths in leaves that may or may not drop off. The edges all around the leaves or half of the leaves can be brownish and work its way inwards a bit causing the part of the leaves to curl up in the air a bit. Fan leaves will show dark greenish/purplish and yellowish tones along with a dullish blue color to them. Sometimes the stems can be red, along with red petioles that can happen when having a Phosphorus deficiency. This isn’t a sure sure sign of you having one though, but can be a sign. Some strains just show the red petioles and stems from its genes.
So pretty much the overall dark green color with a purple, red, or blue tint to the fan leaves is a good sign of a Phosphorus deficiency. Having Cold weather (below 50F/10C) can make phosphorous absorption very troublesome for plants.
Many people get a Phosphorus deficiency confused with a fungus problem because the ends of the leaves look like a fungus problem, But the damage occurs at the end of the leaves. side of the leaves and has a glass like feeling to it as if it had a ph problem. Parts affected by a phosphorus deficiency are: Older Leaves, Whole plant, Petioles.

______

 

[TotalHeavenClub]

hi y'all,and thanks everyone for your time and knowledge.
so,I got me some distilled water (pH buffer,just amazes me how much of a moron I can be sometimes) and mixed it with soil at 5gr of soil for 25 ml of waterH 5.5
That seems prety acid ,doesn't it ?I guess I should rise the pH of waterings.
I also talked to the guy who gave me the cutting.It appeared i give the plant roughly 4 times less nutes that he does.maybe just that...mix of mg ang P deficiencies.Didn't think of that one cause the other plants in the garden are just fine but they are low feeders and this one could be a nute whore.
So I'll try to rise the pH and give more nutes and see how the plant responds...
thanks again to everyone for helping me
be well
grow on
thc

 

[Core]

not a moron ..just a hard listener i think lol.....but now you have your cause...and dont go over 7.0 trying 2 raise the ph ...otherwise your baby's gonne suffer...and dont just meassure runoff know you know your soil is acidic...and if you can't get it up tru waterings you'll have 2 add some Lime me thinks...

ohw and i would't give'm 2 much nutes...me thinks she has enough ...she just has nute lockout coz of the ph.....

 

[TotalHeavenClub]

core,you're da man !
I was ready to overfeed the already suffering skunk.She may already have all the nutes she needs but didn't have access to it because of the too acid soil.
me padawan grower thanks the ic jedi growers guild...
Here is the suffering plant:

the same from the top:


I'll post pics of her when/if she recovers...
and here she is side by side with her step-sister (the other plant is a satori from the same batch as the male used to pollinate the skunk):




I just hope the skunk will recover/survive long enough to give me some viable seeds.I've been thinking about this satori/skunk cross for a while and hope it's gonna be tasty and will keep some of the satori hardiness so she will thrive despite my noob errors.

thx everyone for the help
grow on
thc

 

[scegy]

right on dude!some lime should do the trick, 1 tbs/gal would suffice i think, we should see some results in a few weeks woohoo!