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Fig. 1. Relationship between solution salt concentration c (1 meq L–1 = 1 mmolc L–1), osmotic pressure head h
, and electrical conductivity EC. The plotted data are EC measurements made on the irrigation waters used in Skaggs et al. (2006) and UNSATCHEM (
im
nek et al., 1996) computations of EC and h based on the composition of the same waters. The solid lines are fits to the data. A common dilute-solution approximation, EC = 0.1c, is shown for reference (dashed line).
