I'm starting a new project to use soil moisture sensors to control lawn irrigation. I have installed some Davis tensiometer sensors in the ground, and have them hooked up to a hobby boards 1-wire system.
Right now, I'm just starting to get data from the sensors, so I don't know much yet. However, I'm curious if maybe anyone else has fiddled with such things. Most of my questions revolve around what the proper values should be. The Davis manual seems to indicate that you should water when the readings get around 25-40cb. But then water until they reach what? zero?
Zero seems pretty wet.. So I'm really trying to just get a handle on where the right butter zone is for a lawn. Any thoughts would be appreciated.
Right now, I'm just starting to get data from the sensors, so I don't know much yet. However, I'm curious if maybe anyone else has fiddled with such things. Most of my questions revolve around what the proper values should be. The Davis manual seems to indicate that you should water when the readings get around 25-40cb. But then water until they reach what? zero?
Zero seems pretty wet.. So I'm really trying to just get a handle on where the right butter zone is for a lawn. Any thoughts would be appreciated.