Figure 1. The expected bias in the prediction of the proportion of remobilized N according to Eq. [7] in terms of the proportion of postsilking N uptake allocated to the grain and post silking ¹⁵N uptake proportion. Graphs correspond to a true remobilization proportion of 0.65 (continuous lines) and 0.69 (broken lines). For example, with a true remobilization proportion of 0.65, a proportion of postsilking N uptake allocated to the grain of 0.80 and a postsilking ¹⁵N uptake proportion of 0.20, the bias is just 0.03. With the same proportion of postsilking N uptake allocated to the grain and a postsilking ¹⁵N uptake of 0.30, the bias is between 0.04 and 0.05.