While talking with a field manager for a walnut grower today, i asked if he thought he would see central used commonly in his lifetime. I guessed him to be 35, he said he hoped that within the next 10 - 15 years they would make the change. In our talk he mentioned pressure bombing as their main decider for irrigation needs. While he told me that they used probes, sensors and even the occassional shovel that pressure bombing was used the most often. We talked 20 minutes while waiting for an access road to clear. It was interesting to me. Kiril, outside of college, have you ever used this method of determining plant moisture?