Fig. 4. Estimated amounts of N, P, and K mobilized from old shoots (net retranslocation/10) and from the soil (uptake) for new growth in nutrient-loaded (L) and conventional (C) black spruce seedlings [left]; transplanted on poor (P), medium (M) and rich (R) soils [right]. Vertical bars are standard errors of mean. Similar bars marked with different letters are significantly different according to DMRT, P < 0.05