leafs drying up

[BigPhil]

Hello it started at the lower leafs and is working its way up one of my lemon skunks, it started off as little yellow dead spots on leaf, the then tips then more, im not sure what is causing this to happen. any help any1?

 

[!!!]

What medium? what nutes/schedule? pH?

 

[BigPhil]

Medium is bio canna terra it had fish meal and gunao in soil, Nutes in using are the bio canna, Ph watering at 6.8 off run 6.8 -6.5

With the soil keeping them going for quite a while I did my 1st feed wednesday just gone. Going to feed tomorrow (sunday), Temps 22-25c, I feed with a low ec of 1.1

 

[BigPhil]

i put them on 12-12 on the 11th of last month, they have been flowering for about 10 days now

 

[mitchyboy89]

Looks to me like a Magnesium deficiency. Add one tablespoon of Epsom salts per gal of water until the problem stops. I'd wait for someone to double check this over but it really does seem that way to me

Mitch

 

[BigPhil]

doesnt magnesium turn the leafs yellow? these are just a lighter shade of green, i have a bottle of cal & mag handy incase i ever needed it, i last gave them a shot 3 weeks ago

 

[Hazy Lady]

It's Potassium Phil, you think it looks like this? on the Left?

Here look at this one, pics by General ganja.

 

[BigPhil]

no its like they dry at the tips then work there way down the finger of the leaf not at the eadges, and also the leaf fingers curl inwards, like a bridge shape

 

[mitchyboy89]

I was thinking that becuase when the leaves turn yellow and the veins remain green its a good sign of mag def and on your pictures seems like the intervenial parts of the leaf are turning light green/yellow. If it started from the bottom and worked its way up it is an immobile deficiency, N,P,K,Mg,S. It is definately not sulpur.

 

[BigPhil]

cheers ill get out my bible and have a read about what immobile deficiencys do what to the plants and hopfully narrow it down

 

[VerdantGreen]

i would say phosphorous deficiency. but i am no expert.

 

[mitchyboy89]

Could be P and Mg. What is your ph levels? I think that could be a factor in this. These 2 pictures look like your problem, which could be locking out the Mg and other nutrients.

Ph fluctuation



P deficiency


http://www.icmag.com/ic/picture.php?albumid=11014&pictureid=214348

 

[BigPhil]

the off run ph when i water is 6.8, i carnt see your pictures mitchy, off run today was 7.0, so next time i water its just going to be with PH'd water and a drop of boost

VerdantGreen I thought it may been phosphorous myself it looks more like P defciency, when I fed her today I used an N-P-K of 2.0-6.0-3.5 see if that helps or maybe the ph is slightly to high and blocking it out

 

[GoinGreen]

def looks like a P deficiency, Im no expert but Ive run across this before.

 

[VerdantGreen]

cool BigPhil just remember not to overdo it, and that the leaves already affected will not recover - all you can do is stop more leaves going the same way.

V

 

[BigPhil]

ok thanks guys, what a lovely bunch you are

take it easy Phill

 

[Hazy Lady]

cool BigPhil just remember not to overdo it, and that the leaves already affected will not recover - all you can do is stop more leaves going the same way.

V

This is a good point Phil.
Hey, those pics I posted are late stage, yours are earlier.
I think yours are a combination of a few deficits Phil with the Potassium being a large part of it, but you're sorting it now so you'll get there, even if it takes trial and error? Bummer though, good luck bud.

 

[BigPhil]

This is a good point Phil.
Hey, those pics I posted are late stage, yours are earlier.
I think yours are a combination of a few deficits Phil with the Potassium being a large part of it, but you're sorting it now so you'll get there, even if it takes trial and error? Bummer though, good luck bud.

Thanks Hazy lady, this buds are small not very frosty at all compeard to my other LS, i have trimmed up the leafs, so if it carrys on ill know and then ill have to try somthing new