sidrun
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nutrient deficiency --SOLVED--

---SOLVED, PLEASE CLOSE

Hi! Can you please help me identify which nutrient is in deficiency?

Photos:




Peat soil, pH ~5,5, not yet flowering, have grown for about 1,5 months. The deficiency symptoms are on the lower half of the plant (e.g. on the older leaves)

Thank you very much !
Last edited by sidrun on Tue Feb 21, 2012 6:05 pm, edited 2 times in total.

Dillbert
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Location: Central PA

the slight mottle could be a phosphorus issue -

the other stuff looks like insect damage more than "deficiency"

can you elaborate on the "peat soil" - tomato would prefer something not quite that acid - but if you're growing in pure peat that's definitely going to cause nutrient deficiencies of every shape and kind with time.

dustyrivergardens
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looks like a burn

sidrun
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Joined: Mon Feb 13, 2012 9:21 pm

The plants are insect-free, grown in a closed environment. The peat soil is with lime of course.

I also found out that plants with higher pH (~6,0) are less affected.

edit: what about manganese toxicity? is it possible?

Dillbert
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you might want to describe what it is you are doing.

right now it's a big mystery with folks just shooting in the dark.

why the peat?
indoors? no pests? not part of my experience with greenhouse growing.

you're growing tomatoes a full point lower than they like in a non-nutrient soil and looking for lack of ?
nothing may be lacking - who knows at this point - perhaps everything is there except for the cultural conditions required by the tomato to utilize what is there?

if you are growing things indoors in a tightly controlled but artificial environment you will need to thoroughly pursue all the chemistry issues.

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