[polar26]

The leaves of my 2012 tomato plants have started to turn a greyish colour.
The plants were grown in a PVC cloche placed within my greenhouse until about a foot tall.
On the 18th April i removed them from the cloche and all plants looked extremely healthy and placed them out in the greenhouse proper. In the 5 days since i removed them from the cloche most of the leaves have started to display greyish spots or patches on the top of the leaves while the underside of the leaf remains healthy.

Would be grateful if people could express their views as to whats causing this.

Do you think i have some disease or is it possible the leaves have just become sun scorched since being removed from the protection of the cloche despite being careful not to water directly on to leaves and the temperature of the greenhouse not being to hot due to the poor weather.

I`ve linked an image of the affected leaves below

http://i40.tinypic.com/sobkv5.jpg

[DD.]

Looks like sun scald to me and nothing to worry about.

Even if you don't splash water on the leaves they are still prone to condensation which has the same effect.