Heirloom Tomato Rows

I've added a nice rice straw mulch over the entire garden. I'm hoping it will work to keep the weeds down and some extra moisture in. The photo above is of 2 rows of heirloom tomatoes we have growing on a tomato fence. The plants are secured to a wire fence supported by T-posts. It seems to be working well so far. I waited longer than I should have to support the plants and they were pretty out of control when I finally got around to tying them to the fence.
I've realized that I have been way over watering the poor plants so I am trying to cut back to every 3rd day. The leaves were starting to yellow and get a little curly which is a bad sign. Under the tomato plants I've planted carrots and baby spinach as well as beans and beets.