Research Article

Temporal Variation of N Isotopic Composition of Decomposing Legume Roots and Its Implications to N Cycling Estimates in Tracer Studies in Agroforestry Systems

Figure 4

Effect of 15N of residue on N uptake estimates (proportion of plant N derived from residue) in (a) the residue application experiment (RA), and (b) the full interaction experiment (FI). %NdfrR: calculated with total initial 15N of residue, and %NdfrS: calculated with simulated 15N of N released from residue (%NdfrS). Arrows indicate shoot harvesting in the FI experiment.
506302.fig.004a
(a)
506302.fig.004b
(b)