Effect of cropping system and treatment on occluded POM-C (OPOM-C) dynamics during 330 day incubation.

<p>Control: treatments with no residue nor N fertilizer added. N: treatments with N fertilized, R: treatments with residue applied. RN: treatments with both residue and N fertilizer added. Different letters suggest significant differences at p<0.05, comparisons were were made for the interaction of cropping system (Conv, Med, Long) by date (0, 180, 330 days), and treatments (Control, N, R, RN) by date within each site (IAsoil, MDsoil).</p>