Summary

In review, it is important to test and evaluate irrigation water and soil independently, as well as to consider the potential negative effects when both substrates are combined to create the soil/water matrix.  The specific testing steps and interpretations include: 

1. Analysis and evaluation of the common ions and carbonate concentrations, and hydrogen ion content (pH) in the irrigation water source for the planned irrigation use.  Interpret the suitability of water for the type of irrigation as described in Irrigation Water Quality section of this Technical Note and in other references as appropriate.  Consider primary and secondary impacts to soil and plants. 

2. Analysis and evaluation of the common ions and carbonate concentrations, hydrogen ion (pH) content, and textural classification of the soils in the proposed planting area.  Interpret the suitability of the soil for the type of irrigation and woody species as described in Soil Quality section of this technical note and in other references as appropriate. 

3. Evaluate the combined impact of common ions, carbonate, pH, and soil texture on the suitability of the proposed planting.  Potential management decisions in selecting an alternative may involve the client's expectation of success or performance and their aversion to risk.  Consult Chart 1 and other references as appropriate to evaluate interactive soil-water interactions.

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Last Modified: 10/11/2007