a couple plants dying nothing i seen before

i have few plants have this issue after transplant to a larger pot, most of the plants are normal except a few, they are grown in green house, bulk fertilizer feed at 900ppm, anyone knows whats happening here?

forgot to say, grow media soil, thanks.

Could be P issue

What are the black spots all over

BigSsecrets said:

What are the black spots all over

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Holy crap good question. I had to zoom in

Black spots, soil likely from transplant.

Anyone else think 900ppm a bit high......

Nitrogen burn. They can recover.

Way over fed.

Corso so understated....WAY over fed.

What is the temperature inside the greenhouse?

Your pH is way off in the root zone.

I think it's from over feeding and a build up of micro nutes which can form burns and black spots.

The black spots will also prob start to form necrosis.

PH could also be an issue as if your PH is wrong your plants certain nutes become more or less avaliable. PH in your Soil is just as important as the PH of your soultion.

I'm guessing as it's soil you proberly have a build up of salts which is changing your PH and increasing your PPM/EC value also from over feeding. Try giving it a serious flush, mixing the correct nutes with the correct PH and see if she recovers.

Snoopy808 said:

Anyone else think 900ppm a bit high......

Nitrogen burn. They can recover.

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Also I'm sure nitrogen burn starts at the tip and not on the margins and centres.....

Look at the other two pics. The thumbnails. Not nitrogen?? A heavy feed will fry like last thumbnail and bleach like in first thumbnail.
You referring to tip burn from a little excess feed, hes on soil, 900ppm, will fry like the thumbnail.
His full size pic is showing deficiency.

matagrow said:

i have few plants have this issue after transplant to a larger pot, most of the plants are normal except a few, they are grown in green house, bulk fertilizer feed at 900ppm, anyone knows whats happening here?View attachment 4512066

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Check for thrips

Looks like a magnesium deficiency

Very helpful

Check under the leaves, too....magnifying glass or best tool out there, a jeweler's loupe. Generally deficiencies start from the tip and work it's way up. This seems spotty, sporadic....like something sucking the leaves.