Root ingrowth reduces litter N remaining in SOM
Root ingrowth did not significantly alter litter C in total SOM (Fig.2a , p>0.10) but reduced the litter N in total SOM
by 20% relative to both root exclusion treatments (Fig. 2b ,
p<0.001). Within the SOM fractions, root ingrowth reduced both
litter C (Fig. 2a , light green, p=0.001) and litter N (Fig.2b , light green, p<0.001) remaining in the
unprotected light POM fraction.