Saturday, September 25, 2010

Salt: The second sweetcorn plot

In both plots the irrigation water had an electrical conductivity of 1.27 dS/m. This equates to about 800 ppm salt. The second sweetcorn plot was irrigated with water made up to 800 ppm with common table salt (NaCl), whereas the first plot had 800 ppm salt from the washing machine water (top graph).
Once again the salt levels never rose very high. This was largely because such a small amount of irrigation was required (just 55 mm), and there was a substantial amount of rain.

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