How do youtell early tomato blight versus water splash damage?

[Hector]

A;ll the toms in one greenhouse are great except for two plants with brown and yellow leaves...leaves droopy too

[Hector]

[Ellen K]

Well  I have been told different on here but if it is just the lowest leaves affected it's not necessarily blight.  Could be anything really, poor uptake of trace elements (like Mg) splash damage or just general plant hammering from extremes of temperature, wind etc.

But if the whole plant is droopy, that's not good.

[davyw1]

Hector have a look hear
Tomato blight
http://learningstore.uwex.edu/assets/pdfs/A2606.PDF

Potato Blight
http://www.dgsgardening.btinternet.co.uk/potato.htm

[Hector]

Thanks all. That is really helpful :)

[sunloving]

If its blight the fruits will have brown spots on them to.
hope its not.
x sunloving

[OllieC]

If its blight the fruits will have brown spots on them to.

Only when it's spread to the fruit. It normally starts on the leaves.

[davyw1]

If you are going to check for blight then you start at the leaves they will be the first to show the signs as that is where the spores are most likely to come to rest, then have a look at the stems for black patches. When you have the spots on the fruit you have not done the above cos the plants are then kerkanached