Fig. 3From: Application of ionomics to plant and soil in fields under long-term fertilizer trialsHeat-map analysis of changes in the translocation ratio of each element in maize grown under different nutrient conditions. +NPK, complete fertilization; −N, fertilization without N; −P, fertilization without P; −K, fertilization without K; −NPK, no fertilization. The translocation ratio for each element is the ratio of the concentration in leaves to the concentration in soil. For soil, concentrations of 0.1 M HCl-extractable elements, except those of N and Cs, are presented. For soil N and Cs concentrations, the water-extractable and total concentrations, respectively, are used. Hierarchical clustering was used to arrange the elements based on their translocation ratio. r: Relative translocation ratio with respect to the +NPK treatmentBack to article page