[banf77]

Hi,

My neighbour has asked me to post the picture below of a problem he is having with his tomatoes. As you can see, the base is discolouring to a black colour.
Any idea what could be causing this?
Thanks
Steve

[Ice]

Looks like blossom end rot possibly caused by erratic watering.

[peapod]

Ice is right
Blossom end rot for sure, it leads (I think) to a calcium deficiency and causes black rot at then end of the toms..nothing can be done Im afraid

[Yorkie]

Here's the RHS page on blossom end rot for your info 

[banf77]

Thanks for those incredibly quick replies!

Steve