Magnesium deficiency?

deno · Nov 9, 2017

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.

Nutty sKunK · Nov 10, 2017

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 · Nov 10, 2017

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.

Jypsy Dog · Nov 10, 2017

Check your pH. Mg deficiency starts from the bottom up. (mobile)

Jypsy Dog · Nov 10, 2017

deno said:
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.View attachment 4040794 View attachment 4040795 View attachment 4040796 View attachment 4040797

Soil? Hydro?

deno · Nov 10, 2017

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 · Nov 10, 2017

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.

If feeding regularly in soil Cal/mag should be used at least 1/2 the remembered dosage on the destruction's.

Magnesium deficiency?

deno

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Nutty sKunK

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Buba Blend

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Jypsy Dog

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Jypsy Dog

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deno

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Lucky Luke

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