April 25, 2011

Soluble Salts: Don’t Get Burned

As discussed in our previous article last month, high soluble salts can accumulate in the root zone when there is poor quality (high salt) irrigation water or excessive fertilizer input. Understanding which bedding plants are most sensitive can aid in crop selection and in management practices such as leaching. At Cornell University we conducted an experiment to determine the response of 14 common bedding plants to increasing levels of high soluble salts. In this article we detail the growth effects on the studied species, provide a classification grouping for response to extreme salt stress and list corrective actions for high salts. Bedding Plants For Salt Sensitivity Table 1 ranks the bedding plants we studied for growth and height response to high soluble salt levels (PourThru EC 7.1). The irrigation water used for this treatment contained table salt (460 ppm Na + 710 ppm Cl) and had an EC of 2.4. […]

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