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Anthracnose?

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ExoSteve

Member
HI!!

I have Kalichakra and WW x BB in the same room. Temperature max is about 27-28C and at night it is 19-20C. Humidity is 35-40% during day and 50-55% at night.

The only plant that are affected my this is the WW x BB. I have 3 WW x BB in the back of the room and 1 in front with 4 kalichakra BETWEEN them. If its contagious why Kalichakra are very healthy?

I switched to CANNA Substra in Pro-Mix soil, watered 7 liters of water in 25 liters pots. The water was at 500ppm and the runoff at 1000ppm. Overfert? I doubt it! pH is fine!

The WW x BB have the EXACT same treatment as the Kalichakra and the kalis are beautifull...

Some of the leaves are praying like for Mg defiency...

Some of leaves are green healthy as hell...

The buds still grow well...

The plants drank 6 liters of water in 8 days....

Anthracnose?
K defiency?
Roots asfixies?

Are my first choices!!

I have 8 clones from them! 3 of them have 1 leaf in the bottom that have cercle spot and black spot...Anthracnose? Why my kalis are ok than?

What u guys think??

THANKS!!!! :tiphat:
 

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CannabisFox

CannabisFox

Member
Totally overfed. Stop adding nutrients till the runoff is down at 500 and check for the plant signs.. you should also consider flushing the plants.
 
CannabisFox

CannabisFox

Member
ExoSteve said:
The water was at 500ppm and the runoff at 1000ppm. Overfert? I doubt it! pH is fine!
Click to expand...

This is the crucial factor. It means that you have a massive salt build up in your soil. The plant is thirsty but all it gets is salt water :)
So it takes up too much nutrients and stops using them to prevent further damage. Thats why you get signs of def although it has a surplus.
 
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ExoSteve

Member
1000ppm for a really big plant like this is nothing...

In one month they got...

at first day they got 25 liters of fresh new soil with 3 liters of water (rhyzo in it)
at day 10 they got 1.5 liters with rhyzo
at day 15 they got 600ppm in 2 liters
at day 20 they got 1.5 liters plain water
at day 25 (the plant is big) they got 900ppm
at day 30 they got 500ppm in 7 liters of water (runoff was at 1000ppm at this time) (used new nutrient CANNA Substra in Pro-Mix)

Why my kalichakra are pretty beautifull with the same amount of nutes except they are in 12 liters pot and the runoff from them was 1200ppm...??!!!?!?! No single sign of burn! They even have a kind of discoloration that look like Mg defiency...but still thrive a lot!!

Why my plants are overfed with this pretty normal schedule when I see people on another forum where I go that use CANNA Terra at a rates of 500ppm on 3 weeks clones and after that raise to 600, 700, 800, 900, 1000, 1100 every next weeks...that make no sense to me!! They have 750w and I have 1000w!!

My 3 weeks clone as starving...gived them 500ppm...they got greener...I watered with water 2 times. I transplanted them in pro-mix and they have leaves like these as the bottom....and even after the transplant they still get worst...
 
schwilly

schwilly

Member
all i know about anthracnose is in regards to grapes.

i do know that typically the infections will be isolated or more predominant in grapes nearer the soil.

i do not think anthracnose has anything to do with the plants in the pics you posted.
 
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ExoSteve

Member
When I watered with 7 liters one of the plants got 2 liters of runoff??

Overfed? What about simple carencies?
 
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ExoSteve

Member
Its what I think but it was pretty hard...the plants were very nice and all of sudden was like this this like 4 days...

I will feed the others tomorrow since the flush was ok...

Those WW x BB are heavy feeders...
 

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CannabisFox

CannabisFox

Member
the thing with flushing (and having higher ph in the water afterwards) is that those salts needs to come from somewhere. so if you flush with lets say 2 litres with 200ppm and the outcoming water has like 1000ppm its not said that their are 1000ppm in the soil but much more.
in the soil there is enough ppm to push your flushing water to 1000ppm by just running trough so theres more then 1000ppm in it.

well thats how I understood it.

It is possible that plants get some kind of shock when there is not enough oxygen in the rootzone or too much nuts so that they starve very fast when a critical point is exceeded.


Well and about that point "why do some ppl stay fine with ec1,5 and some other are overfeeding with 0,5ec"...
1. different genetics
2. different ph
3. different temps
4. different light
5. different ways of measurement
all points that can influence nut uptake
 
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ExoSteve

Member
Thank you Fox but it was not overfeeding.

I flush with 100ppm water and the runoff was at 700ppm.

The way I see it when we flush with tap water is that its like when we add nutes in water...! To raise your 100ppm water do you need 1500ppm to reach 1000ppm? No! You need 900ppm...I think its just the same thing with runoff...

If I water with 1000ppm and the runoff is 1000ppm is that mean that there was NO SALT in the soil? From what you say, yes! But is impossible after 5-6 weeks of flowering that your plants eat up EVERY SINGLE nutrients that you gived to them.

I think my mistake is that I was onderwater them ... only 1.5 liters each 5 days...and all of sudden I gived them 7L with only 500ppm @ 0.5 (1.0EC) in the water...they got starved like crazy.
 
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ExoSteve

Member
It was finally carencies! Maybe a shock because they got 7L of water instead of 1.5L...

The flushed plant still have new ugly leaves and the plants that got 750ppm don't have new weird leaves.
 
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