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Comparison of average yeast assimilable nitrogen (YAN), free amino nitrogen (FAN) and ammonium concentrations observed in the 2014 and 2015 seasons (n=108 total apple samples). Error bars signify standard error of the mean, and different lowercase letters indicate differences in a given value between the 2014 and 2015 seasons (two‐way t‐test with significance defined as p<0.05)
