Automating Greenhouse Irrigation 

If you wanted different moisture ranges for say different crops you would have to have a tensiometer for each moisture range and of course a separate valve and zone for each moisture range.

I am going to deploy a few of these in my grow room, Does the signal wire just go to a solenoid controller? I have a leeder 1hp pump, 500 gallon reservoir, and a Galcon irrigation timer, it is a pressure compensating system as well. Any input would be great.

The entire system could be done for $150 or so plus however many benches worth of emitters and pipe you want.

Lou: Would it be possible to have different tensiometers set at different matric potential thresholds, so that you could setup irrigation to maintain different soil moisture ranges? I thought of doing this with soil moisture probes and a datalogger that would tell the irrigation when to start and stop.. Hadn't considered using tensiometers until now.

I tried to find the tensiometer online and could not find one like the one in the video.. please specify where to purchase..thanks

What was the growth regulator you used never heard of That before ...

Also, what was the ballpark cost of your system? Just curious. Thanks for the video!

Hi I have a question Is that a potable water supply set up or is a pump creating pressure to push the water through the system ?

The Irrometer Company makes the tensiometer I used.

Awesome Video

I don't think vapor pressure is the right term. Soil tension is a better term. As the soil dries water is pulled out of the tensiometer causing a vacuum within the dial. As the needle is pulled up by the vacuum it turns on the valve and the plants get watered. As the soil becomes wet water reenters the tensiometer and the vacuum is reduced, the needle drops and the valve closes.

hello the device has two cables, what are those for? regards

poor mans testameater 1/8 inch doll rod in a 1/4 inch tubing wood swells wood waters the plant