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. 2013 Mar 22;4:39. doi: 10.3389/fpls.2013.00039

Table 2.

Correlation matrices of nutrient data of Malus domestica computed across two scales: dry matter content and N-P-K-Ca-Mg.

Scale Nutrients N P K Ca Mg
Data scaled on dry matter content (common expression) N 1  0.023 0.068ns 0.232** 0.271**
P  1 −0.003ns 0.138** 0.220**
K  1 −2.38** −0.205**
Ca   1 0.080ns
Mg 1
Data scaled on the sum (N + P + K + Ca + Mg) N 1 −0.029ns −0.591** −0.245** 0.293**
P 1 −0.219** −0.003ns 0.200**
K 1 −0.574** −0.455**
Ca 1 −0.017ns
Mg 1

ns, *, **: non-significant and significant at the 0.05 and 0.01 levels, respectively.