Irrigation Water Quality for Greenhouse Production

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Irrigation Water Quality for Greenhouse Production

Irrigation Water Quality for Greenhouse Production 

Elizabeth Will, Graduate Student
James E. Faust, Assistant Professor
Ornamental Horticulture and Landscape Design 

High-quality crops can be produced only by using high-quality irrigation water. Characteristics of irrigation water that define its quality vary with the source of the water. There are regional differences in water characteristics, based mainly on geology and climate. There may also be great differences in the quality of water available on a local level depending on whether the source is from above ground (rivers and ponds) or from groundwater aquifers with varying geology, and whether the water has been chemically treated. The chemical constituents of irrigation water can affect plant growth directly through toxicity or deficiency, or indirectly by altering plant availability of nutrients. To evaluate the quality of irrigation water, we need to identify the characteristics that are important for plant growth, and the acceptable levels or concentrations of these factors. Having the water tested by a reputable laboratory is the first step in this process. A knowledgeable interpretation of the results allows us to correct water quality problems and/or choose fertilizers and irrigation techniques to avoid crop damage.

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