2Soil Pedology1. What is the accumlative effect of rainfall and irrigation in Mega litres equilavents and the effect upon crops / soil formationEffect of increasing rainfall on a soil sequence in NSW (From Koppi 1990).
3Rainfall Characteristics North Ryde Jun 07 – Feb 08 pHuS/mRainfall (mm)Average5.578.112.7Average Dev0.685.88.8Median20.08.0Min3.00.02.0Max7.91371.051.0Count85.067.0
5Soil Water HysteresisEffect on irrigation scheduallinng – ET and TDR also on water movementConceptual and Parametric Representation of Soil Hydraulic Properties: A Review. Shmuel Assouline * and Dani Or. VZJ Vol. 12 No. 4
9Electrical Conductivity SOIL CHEMISTRYElectrical ConductivityMethod Of Measurement – or What are we MeasuringECe EC 1: ECw EC app EC1: EC 1:2
10Soil Chemistry Osmotic potential -0.36* (mmho/cm) (Osmotic potential) barRange 3-30mmhosTotal Cations or Anions from ECTotal Cations or Anions (mEq/l) 10*EC(mmho/cm)Total Dissolved Salts (mg\l)from ECTDS(mg/l) 0.64 *EC(mmho/cm)Formula for EC to Osmotic pressure, Total Cations and TDS. From Bresler, et al 1982