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Discolouring of tomato leafs

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Discolouring of tomato leafs

Postby dj_backq » May 12, 2008 2:07 pm

I'm experiencing some slight discolouring of a few of tomato leafs. My plants are about 5 weeks old. Just transplanted them in bigger pots yesterday. They were showing these signs before transplanting. Leafs that are partly turning grey and yellow. No spots or curling. I have searched all diseases in my books and I can't find anything that ressembles. Almost looks like army camouflage! Other side of leaf is slightly purple.

Lack of nutrients? Over watering? Sun burn? Was my smaller pots stressing them? I removed most of these leaves... should I leave them be? Keep in mind that I'm all organic.

I have grown tomatoes before, first time I have this problem. Thanks

Andre
Andre


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Postby butterfly » May 12, 2008 4:00 pm

I don't fertilize my toms until they have been planted outside for a couple of weeks

So I never had that problem

maybe over fertilizing is doing it I think
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Postby dlb » May 12, 2008 9:45 pm

I have a couple of sites for you:

http://www.hbci.com/~wenonah/min-def/tomatoes.htm

http://vegetablemdonline.ppath.cornell.edu/diagnostickeys/TomWlt/TomWiltKey.html#yellow

Take a look at the nice pictures and compare. From your description I'd say phosphorus or calcium deficiency.

I had a lot of trouble with one batch of tomatoes this spring - it appears to have been a nitrogen deficiency. I would have had to have taken much better notes to postively identify what was done differently with that batch, but I do know I was scrambling for potting soil at one point, and may have used a mix not suited to tomato seedlings. This year I conquered labelling. Next year they will all have ID numbers.
Dora
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Postby dj_backq » May 12, 2008 9:56 pm

I think they had overgrown their pots... and therfore the roots could not reach some nutrients, nitrogen especially acording to the pictures.
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