#$%^&*AU2016201306A120160317.pdf#####ABSTRACT A method of irrigating a field comprising acquiring a calibration water matric potential for the field, and irrigating the field during an active irrigation period with an amount 5 of water responsive to the value of the calibration matric potential. Acquiring a calibration water matric potential comprises acquiring a calibration water matric potential at least once a day when plants in the field exhibit relatively small water demand. 10 -207455970_1 (GHMatters) P83166.AU.3 AJM8/10 .- 300 SET TB,TE,TalTdiff 30 i ... 302 ACQUIRE Tclock JOJ clock =-, Tcal N YES CALIBRATE Mo 3 -04 ..ACQUIRE Tcloc~k 305 J06 ? <*YES SET Tp= Tclock 3j-07 SET AT= Tclock -Tp J08 NO T df RRIGAT) ON PULSE 1,9 ACQUIRE TclockJ1 FSET Tp= TcIockJ J12 MEASURE MI31 A " :: B C FIG. 5A
