Office Locations Central Office 2 Sheriff Street FORBES NSW 2871 Ph: 02 6851 9500 Fax: 02 6851 6991 4-6 Market Street BOOROWA NSW 2586 Ph: 02 6385 1018 Fax: 02 6385 1061 7 Hay Street CONDOBOLIN NSW 2877 Ph: 02 6895 1110 Fax: 02 6895 3406 30 Lynch Street COWRA NSW 2794 Ph: 02 6341 1600 Fax: 02 6342 2565 20 Warraderry Street GRENFELL NSW 2810 Ph: 02 6349 1200 Fax: 02 6343 2366 168 High St, HILLSTON NSW 2675 Ph: 02 6967 2897 Fax: 02 6967 2998 Cnr Court & Currajong Street PARKES NSW 2870 Ph: 02 6816 3200 Fax: 02 6862 5254 280 Hoskins Street TEMORA NSW 2666 Ph: 02 6977 4790 Fax: 02 6977 4791 31-33 Main Street WEST WYALONG NSW 2671 Ph: 02 6972 2831 Fax: 02 6972 3356 Cnr Lynch & Lovell St YOUNG NSW 2594 Ph: 02 6382 5833 Fax: 02 6382 2134 www.lachlan.cma.nsw.gov.au The EC se value is only an estimated value as the true determination is a complicated and costly laboratory procedure: How to use the table over the page: 1. Measure the electrical conductivity of a 1:5 soil water extract (EC 1:5 ) - locate this value in the yellow shaded section. 2. Determine the soil texture of your soil or find out the clay content. 3. Multiply the EC 1:5 value by the multiplication factor (green shaded area) which corresponds to your texture or clay content to determine the saturated extract electrical conductivity (EC se ) which is shown in the first column of figures. 4. Compare this value with the soil salinity rating and whether it is limiting to crops or pastures. For example: If your EC 1:5 = 0.27 and the soil texture is a clay loam (35-40% clay) the 5. EC se = 0.27 x 8.6 = 2.32 dS/m - medium soil salinity rating / moderately tolerant crops can be grown. Calculating electrical conductivity and Salinity L_003 Above image: Landholders using an EC meter Top image: An EC meter reading of 3.1 dS/m from a 1:5 soil water solution