Loamy fine 0-1.2 1.3-2.4 2.5-4.7 4.8-9.4 9.5+ 0.59 sand to loam Silt loam to 0-1.3 1.4-2.5 2.6-5.0 5.1-10.0 10.1+ 0.63 clay loam Silty clay 0-1.4 1.5-2.8 2.9-5.7 5.8-11.4 11.5+ 0.71 loam to clay ECe Method (dS/m) All 0-0.2 2.1-4.0 4.1-8.0 8.1-16.0 16.1+ NA Textures Table 3. Salt tolerance and yield decrease beyond EC threshold (Smith and Doran, 1996; EC1:1 based on Hoffman & Maas 1977). Crop(s) Threshold ECe Threshold EC1:1 Yield Decrease (%) (dS/m) (dS/m) per EC1:1 Unit (dS/m) Beyond Threshold Barley 8.0 4.5 to 5.7 5.0 Cotton 7.7 4.3 to 5.5 5.2 Sugar beet 7.0 3.9 to 5.0 5.9 Wheat 6.0 3.4 to 4.3 7.1 Ryegrass, perennial 5.6 3.1 to 4.0 7.6 Soybean 5.0 2.8 to 3.6 20.0 Tall Fescue 3.9 2.2 to 2.8 5.3 Wheatgrass, crested 3.5 2.0 to 2.5 4.0 Peanut 3.2 1.8 to 2.3 29.0 Rice; Vetch, common 3.0 1.7 to 2.1 12.0
Loamy fine sand to loam 0-1.2 1.3-2.4 2.5-4.7 4.8-9.4 9.5+ 0.59 Silt loam to clay loam 0-1.3 1.4-2.5 2.6-5.0 5.1-10.0 10.1+ 0.63 Silty clay loam to clay 0-1.4 1.5-2.8 2.9-5.7 5.8-11.4 11.5+ 0.71 ECe Method (dS/m) All Textures 0-0.2 2.1-4.0 4.1-8.0 8.1-16.0 16.1+ NA Table 3. Salt tolerance and yield decrease beyond EC threshold (Smith and Doran, 1996; EC1:1 based on Hoffman & Maas 1977). Crop(s) Threshold ECe (dS/m) Threshold EC1:1 (dS/m) Yield Decrease (%) per EC1:1 Unit (dS/m) Beyond Threshold Barley 8.0 4.5 to 5.7 5.0 Cotton 7.7 4.3 to 5.5 5.2 Sugar beet 7.0 3.9 to 5.0 5.9 Wheat 6.0 3.4 to 4.3 7.1 Ryegrass, perennial 5.6 3.1 to 4.0 7.6 Soybean 5.0 2.8 to 3.6 20.0 Tall Fescue 3.9 2.2 to 2.8 5.3 Wheatgrass, crested 3.5 2.0 to 2.5 4.0 Peanut 3.2 1.8 to 2.3 29.0 Rice; Vetch, common 3.0 1.7 to 2.1 12.0
10%20Soil%20Electrical%20Conductivity.docx