Mulching is working....too good!!
With the large amount of wood chips I have been using for mulch, and the rain we had last winter, and the available water now, it seems I have applied too much water to my tomatoes and even one of my young fruit trees.
The tomatoes are on a drip line and water twice a week for an hour each time. I have applied a little extra by hose and that seems to have caused the problem. I have tomato end rot and about 1/3 of my tomatoes. The excess water keeps the plant from being able to extract calcium from the soil, thus the end rot. Hopefully my desire to water having been dampened will resolve the difficulty.
It pays to dig down and see how damp the soil is from time to time.