Fig. 4. Area under the leaf chlorosis curve (AULCC) 41 days after inoculation with Labyrinthula terrestris, the causal agent of rapid blight, as affected by irrigation water electrical conductivity (EC_W) for four cultivars each of Kentucky bluegrass, slender creeping red fescue, and perennial ryegrass (see legend in left panel of each pair for cultivars) in two experimental runs. The vertical bar at each point is ± 1 standard error of the mean (n = 4).

Image from Applied Turfgrass Science article:
Salinity and Salinity Tolerance Alter Rapid Blight in Kentucky Bluegrass, Perennial Ryegrass, and Slender Creeping Red Fescue