Difference between Burley Tobacco and Flue-Cured Tobacco in Nitrate Accumulation and Chemical Regulation of Nitrate and TSNA Contents

Figure 6

Effects of chemical regulation on NNN, NAB, NAT, NNK, and total TSNA concentration in burley tobacco varieties, TN86 and KT204. Error bars represent standard error (). Symbols and indicate significant difference at 0.01 or 0.05, respectively.

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