Figure 1. Soil nitrate values for various samples dates from 2011 to 2017. Graph demonstrates PSNT values from single-point PSNT surveys from 2011-2017 (2011 = 9 ppm; 2012 = 12 ppm; 2013 = 10 ppm; 2014 = 10 ppm; 2015 = 20 ppm ; 2016= 12 ppm; 2017 = 8 ppm), as well as trend in soil nitrate values over time (May 1 to July 7) for the multiple sample timing years, 2015-2017.

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