What tomato disease/s do I have

[prussiap]

Hi,
In the backyard my tomatoes have these spots, the leaves turn brown (not really yellow), and whole sections die off. I usually prune it and then it flowers and I get more tomatoes. this is a constant fight while I get tomatoes.

In the front yard I have no issues...

Pesticides/bug repellent I've used:
Mixture of peppers/ginger/garlic (equal portions) blended and sprayed on.
2. Organic spray for fungus/bugs.

Pictures to follow
Fist one

Second Picture: Fungus maybe?


Third Picture: Possibly too much water there. though I water every 2-4 days due to rain
[IMG]http://i49.tinypic.com/2vuzpzc.jpg[/IMG

Fourth: Same deal (better focus)


Last:


Hope that's not too many pictures. I'm still getting tomatoes, flowers and ripe tomatoes as long as I stay ahead of it. But it's a lot of pruning. What's the problem and how to fix it would be a very welcome bit of information.

Thanks,