Problem with a Strawberry Diesel cut

[Jare]

Hi all mates

From 4-5 day i noticed a problem with my StrawD cut, the leaf shows some generally "lime green" (she usually got dark green leaves) and some necrosis appears on the leaves, initially only on the bottom of the plant, but now some necrosis showed also on the top of the plant.

The cut was transplated to a 2.5 liters pot after rooting, it is in Cellmax Universal Soil (ph around 6 and startin' EC 1.2), not yet feeded, water ph 6.5/7. I've some other cuts cared in the same way, & they are healty.

Here the pics

This is a 6 day old leaf with this problem

Thanks in advance & sorry if my eng is not too clear

 

[Mr. Greengenes]

Kind of looks like nutrient burn, but you say you didn't add any. That soilmix looks a little dry in my monitor, was it watered thoroughly after repotting?

 

[Jare]

The cut was transplanted almost 2 week ago, i give it water everytime it needs.

It's strange because i never had problems like this in years, i care the plants ALL in the same way and this problem appear only on the StrawD (the only "ready" cut of it).


Anyway tomorrow maybe i'll flush it and see how it goes...

 

[sneaky101]

some do better than others...even from the same plant. I agree, it looks like some type of def. good luck correcting it. I would say Mg def., but not sure (I don't claim to be an expert). There are alot of infermary threads, may want to check them out to confirm.

 

[master shake]

Are those all lower leaves? Can you get pics of the whole plant? What is in that soil mix? I'd also ask where you got it from about how sensitive it is to nutes.

 

[Jare]

Are those all lower leaves? Can you get pics of the whole plant? What is in that soil mix? I'd also ask where you got it from about how sensitive it is to nutes.

No, are not all lower leaves, the problem start also on the leaves on the top.
This cut is an heavy feeder for sure, soon i'd start to feed it.

 

[Jare]

No one know what can be?

 

[unclefishstick]

it needs to be fed,they are HEAVY feeders,feed lightly and frequently and it should revive,start slow and build nute strength until it takes off.but it looks like mg to me

 

[unclefishstick]

oh, and a complete nute mix,you need micro nutes as well

 

[Jare]

Thx for the answer unclefishstick, i also think that is a micro nutes' deficency, yesterday i feed her with a BioGrow from CellMax, and soon i'll give her a new 11lt pot for the flowering and i add in it some Guano Kalong (N=2%, P205=15%, K20=2%, S=2%, Ca/Mg=15%, mg/kg Cu=15, Zn=20, Cl=100) that have in it a good range of microelements, hoping to solve the problem.

 

[Cruzin]

Check the PH and PPM of your runoff, balance the nutes, potentially spray some anti-bacterial just in case and you should be good. Hard to say from the pictures. Deficiency and toxicity look almost identical.

 

[Mr. Greengenes]

Are you watering thoroughly enough that some comes out the drainholes each time?

 

[BurmeseDragon]

Definitely a PH BURN, peat moss is not a very good substrate...it will increase PH quicker than you can balance it out!

It requires lime in the soil but then that is to much calcium and you lock out MG, so what you need is new freaking soil.....Stick to humus and compost, that is WELL AGED...a lot of peat moss is not at all aged.

If it's not mature then it is still decomposing and that means ACIDS that are not humic acids...but acids that do more harm then good.

Get yourself a nice Sea Weed like Maxi crop, B'cuzz stinks...it just adds a sweet flavor and some hormones...its' not a full extract such as Maxicrop, add some worm juice as well to SOFTLY break down your peat moss!

Peat moss seems attractive because it has been preserved for such a long time and it's not a good substrate. It's totally a PH burn because you are adding a good PH level but the acids are being produced and I'd bet your run off is in the low 5!

That means it's a lot more acid in hiding spots within your soil, the sea weed will help with the stress and green the plant up to a nice high gloss.....plus your roots are burned SO DON'T GIVE MORE FOOD, they cannot and I can't stress this enough....they cannot handle more nutrients at this time!

You must heal your plant but first you MUST heal your soil! Soil is SOUL for plants, okay without a good soil a plant has no soul.

You have a deficiency and a toxicity, it goes hand in hand almost every time...it's about how you are missing KEY vital soil ingredients. I have seen the same thing myself, buying cheap soil...and price is no indication...it needs a balance of life and if it's not aged products it requires even more the substances that balance the soil.

Cannabis will grow in bad soil, but it's not going to be an ideal specimen. Worm tea really helps balance the soil biology, as well as the kelp............THESE ARE MORE VITAL TO AN ORGANIC GROWER THAN NPK!

It's a fact, I know people think that absurd levels of NPK is all you need or your macro or micro's..........but nope, it's soil biology or the plant is killing itself by toxic requirements that are out of harmony with soil biology.

Remember that PLANTS LIVE FOR THE SOIL, THE SOIL IS NOT LIVING FOR THE PLANTS! Every grower wants living soil to produce good plants, but it's a fact that plants only exist to promote living soil.

It's that a lot of people do have nice grows and some how got lucky, by not having very active substrates....yours is to active, it seems to be missing balanced life as peat moss isn't a very good organic balanced life...it's been stuck for a long time not decomposing...that means it's lifeless.

Now you are giving it life and it's breaking down in a hurry, giving all sorts of toxic byproducts that have not been aged...old soil is known as humus, it's not even compost but it's the ideal compost...people get confused about what is good and what is healthy.

Meals are better than water solubles, but really start with worm tea and sea weed, kelp weed that are full extracts....not some stupid product that just took what they wanted to charge more!

Anymore I am obsessed with good soil than growing cannabis, so many farmlands are trashed from horrible soil ethics. People dont' understand that compost is very dangerous if it's not humus. That bacteria is extremely toxic if not aged, they produce gases and other toxic by products such as acids...if they are very busy breaking down organic material such as peat moss.

It's like a bad apple, a rotting apple releases gases that rot other apples...but take a basket of apples that turned to humus over a very long time...and it's still living, but it's not so living that it rots everything it touches..

So basically the biology is eating the roots off your plants, no matter what you do to the PH...the soil just isn't going to find balance without the Worm Tea, that is required to have good soil...plus some worms, they really do beat the 'beneficial bacteria' which is only good when there really isn't so much food that they become toxic to what you desire creating.

A lot about cannabis growing ignores basic biology, it doesn't realize what is good isn't always turning out that way. I bet you anything a major dose of Sea Weed with a higher PH, but not to high...because I bet you your run off is an indication but not how acid in locations the bacteria are really producing.......but ya the sea weed and worm tea, then work on your NPK macro's and micro's.

I have some really good humus that I found outdoors, If I can get my camera fixed (a battery that is specialized) then I will get a picture...it basically looks like well screened peat moss, those chunks of peat moss...that twig stuff isn't broken down, not even started to compost and far from humus...the humus I found is at least ten to twenty years old and not at all dead...just not so active it eats living plant tissue...that is way to active!