Does this look like calcium deficiency?

[SHAKELLY]

Started 3 autos in 5g pots with ecothrive coco coir and 30% perlite.

Under viparspectra ks3000 24 inches away from plants and at 75%.

Plants are coming up to 3 weeks and have been fed with advanced nutrients sensi coco grow a and b.

Temps are 24c during the day and 19c at night, humidity is 60%.

Ec of nutes is 1.0 with ph fluctuating between 5.8 and 6.2. I've stuck to this ec and ph on other runs with success so don't think it's anything to do with the nutrients. I've done a run off test and ec is coming out at about 0.8 online with my previous successful grows. I even checked ph run off (i know i shouldn't) but even that is good at ph 6.0. Water is also left to sit for 24 hours heated to 19c with a ln aquarium heater and oxygenated before use.


The auto that seems like it has a deficiency is a critical kush auto. I've spoken with the people at advanced nutrients if it could be calcium and they said no with there sensi coco range it should have sufficient calcium. I had some Epson Salts at home so diluted a little in a litre of water and foliar sprayed just in case it's magnesium but does anyone think it could be calcium deficiency as that's all that is coming up when i search for rust spots, which is what it looks like but only info is when they are in flower and not 3 weeks old or in veg.

I've had this on other autos in the past using advanced nutrients so would be something i can hopefully solve as everything else I'm slowly getting right.

TIA and happy provide any further info needed.

 

[MIGrampaUSA]

It looks to me like you splashed water on the leaves during watering. There's no real sign of calcium issues that I can see. What I want to hear about is your watering practices. It looks moist directly under the plant but it looks like its pretty dry as you reach the edge of the pot. I don't grow in coco but I think you want it to be evenly watered through out the whole pot. Your roots won't grow into dry soil/coco.

 

[Mothman]

Splashed feed mix was my first thought, too. Def not magnesium deficiency, that’s a tiger stripe effect.

 

[SHAKELLY]

It looks to me like you splashed water on the leaves during watering. There's no real sign of calcium issues that I can see. What I want to hear about is your watering practices. It looks moist directly under the plant but it looks like its pretty dry as you reach the edge of the pot. I don't grow in coco but I think you want it to be evenly watered through out the whole pot. Your roots won't grow into dry soil/coco.

I feed with about 700ml of water and get plenty of run off. I also water around the edges first but seems the coco in air pots drys and shrinks nearer the edges.

 

[SHAKELLY]

Splashed feed mix was my first thought, too. Def not magnesium deficiency, that’s a tiger stripe effect.

I have splashed it a little as i have the others but always have a spray bottle at hand to rinse off any nutrients. I have looked a little more into it and maybe be Manganese. Going to try lower my pH slowly of my feed as read manganese is up taken better with pH lower than 6, also iron and zinc which are connected apparently. Trying this as don't think I've fed lower than pH 6 a lot this time round and the pattern of the affected areas. Will update in a few days. Thank you all.

 

[SHAKELLY]

So after a few more days the spots are appearing further up the plant and i have definitely not splashed any feed on it.

Any further ideas?

 

[Mothman]

So after a few more days the spots are appearing further up the plant and i have definitely not splashed any feed on it.

Any further ideas?

I’m thinking plant disease of some type. I did some searching and found Cercospora leaf spot, usually found on hydrangeas or crepe myrtles. Looks a lot like your photo—dark circles with a tan center. It may not be this one, but it would send me heading in the direction of the various leaf spot infections.

Cercospora Leaf Spot

 

[Cirroji]

I’m thinking plant disease of some type. I did some searching and found Cercospora leaf spot, usually found on hydrangeas or crepe myrtles. Looks a lot like your photo—dark circles with a tan center. It may not be this one, but it would send me heading in the direction of the various leaf spot infections.

Cercospora Leaf Spot
View attachment 1341904

that plant has herpes, sorry to be the one to tell you

 

[Mothman]

that plant has herpes, sorry to be the one to tell you

Herpes?? I thought you said you had a hairpiece!!

 

[Novaracer69]

If it's only the leafs that are touching the soil surface. I would say that's it

 

[SHAKELLY]

If it's only the leafs that are touching the soil surface. I would say that's it

No leaves touching the soil and since they've reached 4 weeks I've done a slight defoliation and cut off infected leaves and so far no further markings. The other 3 plants all seem good and have not shown similar markings at all. Will keep an eye out and update and thanks for the responses.

 

[Homesteader]

I vote calcium but it could have been a hiccup with your watering that caused it. Is there any calcium being supplemented?
Seems cold and a bit overwatered to me but I didn't read all too much into the thread.

 

[Trixie]

When you plant a small plant into a large container the excess amount of water can cause the plant's cells in the tissue to burst. Like filling a balloon with too much water. As the plant gets used to the water volume it should recover nicely if you don't continue to overwater.

 

[SHAKELLY]

I vote calcium but it could have been a hiccup with your watering that caused it. Is there any calcium being supplemented?
Seems cold and a bit overwatered to me but I didn't read all too much into the thread.

I have been giving calmag for the last week and the week before i was foliar spraying Epsom salts till the calmag came and i could investigate what it could be. All other plants are fine but this one has since developed these markings now.

I always PH my water between 5.8 and 6.2 and I've even done a run off test and ec and even pH is coming out as i would like. I'm now trying a dry day every other watering. Growth seems fine and I've had similar markings before and still got good results so no idea. Everything it seems it could be I've tried and still something. Thinking it might be a genetic thing.

 

[SHAKELLY]

Splashed feed mix was my first thought, too. Def not magnesium deficiency, that’s a tiger stripe effect.

Same plant, is this the tiger markings you mean?

 

[Mothman]

Same plant, is this the tiger markings you mean?

Not really, mg def in my experience (twice) the stripes tends to be more distinct and without the apparent necrosis. It’ll also start from the outer edges and move toward the center of the leaf, although I have not personally seen that particular expression. Have you looked at any sites with images of various deficiencies?

 

[Mothman]

Same plant, is this the tiger markings you mean?

Looks kinda like Calcium def to me.
Here are two pics of that.

 

[Cirroji]

When you plant a small plant into a large container the excess amount of water can cause the plant's cells in the tissue to burst. Like filling a balloon with too much water. As the plant gets used to the water volume it should recover nicely if you don't continue to overwater.

most amazing advice i've read all month

 

[Mothman]

most amazing advice i've read all month

Hot dogs can’t read!

 

[Cirroji]

Hot dogs can’t read! View attachment 1346158

explain this