Product Manual

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Appendix 1
Classification of Irrigation Water
Excellent EC < 0.25 mS/cm
Good 0.25 mS/cm < EC < 0,75 mS/cm
Permissible 0.75 mS/cm < EC < 2.0 mS/cm
Doubtful 2.0 mS/cm < EC < 3.0 mS/cm
Unsuitable EC > 3.0 mS/cm
Categories of irrigation water quality based on electrical conductivity. (USDA Tech
Bulletin 962)
Appendix 2
Preferred EC Values For Selected Turfgrasses
Sensitive
<3 mS/cm
Moderately
Sensitive
3 -6 mS/cm
Moderately
Tolerant
6 -10 mS/cm
Tolerant
>10 mS/cm
Annual Bluegrass Annual Ryegrass Bent cv. Seaside Alkaligrass
Colonial Bluegrass Chewings Fescue Perennial Ryegrass Bermudagrass
Kentucky Bluegrass Creeping
Bentgrass
Tall Fescue Seashore
Paspalum
Rough Bluegrass Hard Fescue Buffalograss St. Augustine
grass
Centipedegrass Bahiagrass Zoysiagrass
Relative tolerance of turfgrasses to soil salinity measured by the SME Method (“Salinity
in Turfgrass”, Harivandi M.A. Butler J.D., Lin w. 1992).