Click on image to view larger version.
Figure 1. Determination of the proportion of remobilized N and of postsilking N uptake allocated to kernels (tupK) in the year 2004 knowing (i) NHI and % postsilking N uptake (continuous line) and (ii) direct estimated proportion of N remobilized by the 15N method and proportion of 15N taken up after silking (discontinuous line). The unbiased estimates of proportion of N remobilized (trem) and proportion of postsilking N uptake allocated to kernels (tupK) are given by the coordinates of the intersection of both lines. This is a graphical solution of the two-equation system (Eq. [2]) with the derivation of an approximate confidence interval for tupK.
