Super Soil Deficiency - Help Needed ASAP

[Kushfan]

I'm growing in 5 gallon smart pots of super soil, 6 weeks into flower, 3 plants. My 2 bubba kush plants are doing fine, however my og kush is showing a major deficiency with all fan leaves turning yellow and drying up to a crisp, at a pretty quick pace. I'm pretty much left with buds only at this point.

From my research it looks like a magnesium problem? I alternate between 300ppm dechlorinated tap water, and ro water and I don't ph. So I'm not sure if the ph'd water flush method applies to super soil or what I should do? I was thinking of foliar spraying them with Epsom salt and watering with magi-cal today but I'm not quite sure what I should do to save this plant

Here are a couple pictures at the early stages but now it's much worse.

 

[suTraGrow]

Are you sure you're 6 weeks into flowering? those nugs looks nothing like 6 weeks should look like into flowering.
You're also experiencing nute burn, which is another reason i ask if you're sure you're 6 weeks into flower and just noticing this now.

 

[salisburyv]

i agree. should be more development there. looks like it needs phosphorous too. my .02

 

[Kushfan]

I had mentioned those pictures were taken in the early stages, approximately 2-3 weeks ago to be more specific so yes there is much more development and the whole canopy is filled with colas. I am in day 39 of flower.

 

[suTraGrow]

I had mentioned those pictures were taken in the early stages, approximately 2-3 weeks ago to be more specific so yes there is much more development and the whole canopy is filled with colas. I am in day 39 of flower.

Could you maybe post some more recent pictures?

 

[Kushfan]

Could you maybe post some more recent pictures?

Yes definitely once I get home, but I want to treat them asap as soon as I get home. I don't have much more time left with things the way they are. Basically all fan leaves are yellow, with some drying/browning and curling up. I have been removing 10-15 leaves per day from this ONE plant. And now I noticed that it is starting to spread to the newer leaves on the buds

 

[suTraGrow]

Intill we see more pics, im going have to call nute burn. Did you mix your super soil properly? and give it enough time to cook?
Also did it starting from the bottom up or top to bottom?

 

[Kushfan]

Intill we see more pics, im going have to call nute burn. Did you mix your super soil properly? and give it enough time to cook?
Also did it starting from the bottom up or top to bottom?

Yes I mixed it correctly with exact amounts and ingedients, and pots are half full and the plants are all high feeders. The soil cooked for about 2 months. None of the damage started at the tips that would indicate nute burn. They yellow up in some areas first, then turn brown and dry/curl up. The damage started in random areas around the middle of the plant and bottom.

 

[suTraGrow]

Yes I mixed it correctly with exact amounts and ingedients, and pots are half full and the plants are all high feeders. The soil cooked for about 2 months. None of the damage started at the tips that would indicate nute burn. They yellow up in some areas first, then turn brown and dry/curl up. The damage started in random areas around the middle of the plant and bottom.

You're watering with tap/filtered water only right? no additives?

 

[Kushfan]

No additives. I have watered and foliar sprayed with compost tea a couple times. The reason I suspect magnesium deficiency are:

1. Pictures online look very similar
2. I used pelletized dolomite lime in the super soil which is slow releasing
3. I read that tap water over 200 ppm is high is calcium and can lock out magnesium

 

[Situation420]

Foliar spray is too strong and should only be at around 250-400 ppm so you burned your leaves. The yellowing is from a lack of nitrogen but is not a big issue during flowering unless its really bad. If it bottomed from the yellow up its a nitrogen deficiency. Also if the whole plant is yellow you probably have some kind of fungus in your root zones due to a lack of oxygen or over watering. Try getting ahold of some beneficial bacteria and apply them directly to your root zone. What was your ppm when u foliar fed?

 

[suTraGrow]

Foliar spray is too strong and should only be at around 250-400 ppm so you burned your leaves. The yellowing is from a lack of nitrogen but is not a big issue during flowering unless its really bad. If it bottomed from the yellow up its a nitrogen deficiency. Also if the whole plant is yellow you probably have some kind of fungus in your root zones due to a lack of oxygen or over watering. Try getting ahold of some beneficial bacteria and apply them directly to your root zone. What was your ppm when u foliar fed?

Since he's using compost tea as a folier spray i dont see that as being to strong, And lack of nitrogen doesn't lead to crispy leafs, yes yellowing but no crispy as he claims. I think 6 weeks into flowering is a bit to late for beneficial bacteria , as by the time it does any real difference the plants will be ready for harvest.

Post up some current pics once you get a change, it will be a lot easier to diagnose the plants.

 

[Kushfan]

Foliar spray is too strong and should only be at around 250-400 ppm so you burned your leaves. The yellowing is from a lack of nitrogen but is not a big issue during flowering unless its really bad. If it bottomed from the yellow up its a nitrogen deficiency. Also if the whole plant is yellow you probably have some kind of fungus in your root zones due to a lack of oxygen or over watering. Try getting ahold of some beneficial bacteria and apply them directly to your root zone. What was your ppm when u foliar fed?

Its near impossible to burn a plant with compost tea. I have beneficials mixed in with my soil and I also brew my compost tea using bennies. I don't measure my ppm with organics.

Since he's using compost tea as a folier spray i dont see that as being to strong, And lack of nitrogen doesn't lead to crispy leafs, yes yellowing but no crispy as he claims. I think 6 weeks into flowering is a bit to late for beneficial bacteria , as by the time it does any real difference the plants will be ready for harvest.

Post up some current pics once you get a change, it will be a lot easier to diagnose the plants.

Will do.

 

[Situation420]

Beneficial bacteria has been used in farming as a fungicide for nearly 50 years and can be applied at anytime especially if he is at risk of losing his whole crop. I didn't say that the nitrogen caused crispy leaves, that is from his fungal infection that is causing all his problems. The fungal infection is robbing the plant of its nitrogen stunting its growth and yellowing all of his leaves. I merely suggested that his foliar spray is too strong and yes it is possible to make too strong of a compost tea that is why i wanted to know his ppm to be certain.

You also have to know how to keep your beneficial bacteria alive, just mixing them in doesn't mean that they were applied right...

 

[suTraGrow]

Beneficial bacteria has been used in farming as a fungicide for nearly 50 years and can be applied at anytime especially if he is at risk of losing his whole crop. I didn't say that the nitrogen caused crispy leaves, that is from his fungal infection that is causing all his problems. The fungal infection is robbing the plant of its nitrogen stunting its growth and yellowing all of his leaves. I merely suggested that his foliar spray is too strong and yes it is possible to make too strong of a compost tea that is why i wanted to know his ppm to be certain.

You also have to know how to keep your beneficial bacteria alive, just mixing them in doesn't mean that they were applied right...

fungal infections in soil are seen as discolored spots on leaves or dark, fuzzy strands along the stem or leaves. he has not mentioned any of these things, what makes you so sure its a fungal infection?

 

[Situation420]

fungal infections in soil are seen as discolored spots on leaves or dark, fuzzy strands along the stem or leaves. he has not mentioned any of these things, what makes you so sure its a fungal infection?

The overall yellowing of his leaves and the brown crispy edges. He did not mention excessive heat so what else causes the combination of the two?

Pythium look it up. It is a parasitic root fungus that deprives the plant of food. Where there is an overall yellowing of the leaves and browning leaf edges. Just what he talked about. It was yellowing from the bottom up i bet

 

[suTraGrow]

The overall yellowing of his leaves and the brown crispy edges. He did not mention excessive heat so what else causes the combination of the two?

An iron or magnesium deficiency, but since he said he uses super soils and its been properly mixed/cooked i dont know at this point. Intill i get some recent pictures as those pictures are 2-3 weeks old as he stated.

 

[Situation420]

Yea that is why I am 99% sure it is pythium because he seemed to have the basic knowledge of what nutrients to apply and bothered to get beneficial bacteria as well. I doubt he added a lack of any nutrient in his mix especially if he's making compost teas. Pictures would definitely make me 100% sure.

 

[suTraGrow]

Yea that is why I am 99% sure it is pythium because he seemed to have the basic knowledge of what nutrients to apply and bothered to get beneficial bacteria as well. I doubt he added a lack of any nutrient in his mix especially if he's making compost teas. Pictures would definitely make me 100% sure.

I wouldn't be so sure of your self especially since there is no wilting, and pythium always leads to just about 100% wilting as i have experienced it years ago.

 

[Situation420]

Ive gotten it and had no wilting at all, the plant was just all yellow and grew slightly smaller than the others.