Magnesium deficiency?

deno

deno

Well-Known Member
Plants are 5 weeks old. Problem started showing on new growth. They're in soil, and I've only been feeding them with silicon supplement. Saw the first signs on Monday. Gave them a dose of cal-mag on Monday & Wednesday, but problems seem to be getting worse. Any help would be appreciated.IMG_0733.JPG IMG_0730.JPG IMG_0731.JPG IMG_0732.JPG
 
Nutty sKunK

Nutty sKunK

Well-Known Member
Well they look pretty damn healthy.

I’m aware that manganese shows intervienal chlorosis on the newest leaves first.

Have the symptoms sped up after the cal/Mag?
 
Buba Blend

Buba Blend

Well-Known Member
I can't tell from the pictures but if it is a deficiency of magnesium, Epsom salt is a better choice than cal mag to resolve it. Some say 1 tsp per gallon. My preference for a mag def in soil is about a 1/2 tsp per gallon dissolved in water. It can also be used as a foliar spray. Cal/mag is better for a calcium deficiency. Good Luck!
Again, not saying it is magnesium, not sure what it is, just sharing that Epsom salt is better for magnesium deficiency than cal mag.
 
deno

deno

Well-Known Member
It's soil. Seems to be gone, now. I've been watering with rain water, which initially measured about 5-6 ph. To raise the PH I've been adding silicon solution. After a few weeks, I got a cheap PH meter, and was surprised to see the PH was up to 7.2. So I'm thinkiing - have I been raising it for no reason? Seems rain water sitting will go up in PH. I think it was a magnesium (or perhaps manganese) deficiency. I think the cal-mag fixed it, but took a few days. Who knows... I'm just learning, and this helps. Thanks.
 
Lucky Luke

Lucky Luke

Well-Known Member
deno said:
It's soil. Seems to be gone, now. I've been watering with rain water, which initially measured about 5-6 ph. To raise the PH I've been adding silicon solution. After a few weeks, I got a cheap PH meter, and was surprised to see the PH was up to 7.2. So I'm thinking - have I been raising it for no reason? Seems rain water sitting will go up in PH. I think it was a magnesium (or perhaps manganese) deficiency. I think the cal-mag fixed it, but took a few days. Who knows... I'm just learning, and this helps. Thanks.
Click to expand...
If feeding regularly in soil Cal/mag should be used at least 1/2 the remembered dosage on the destruction's.
 
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