In aerobic conditions, unlike in submerged conditions, a high and highly significant negative correlation was found between polyphenols and N transformation Table 6. The results are similar to those of Vityakon et al. 2000 who only found significant correlations between polyphenols and mineral N in upland aerobic conditions but not in lowland paddies.
In both aeration conditions, PBC had rather low correlations with mineral N relative to most other quality parameters although in submerged conditions PBC exhibited significant negative correlations with N mineralization while polyphenols did not Table 5. On the other hand, in aerobic conditions, PBC exhibited lower correlations with mineral N than polyphenols Table 6. This differs from Handayanato et al. 1997 who found PBC to be highly correlated with % N recovery by maize plants in soil amended with legume tree prunings.
In both submerged and aerobic conditions, N content of the residues was the single parameter most highly correlated with N transformation. In aerobic conditions, however, polyphenols had high and significant negative correlations with N mineralization. However, the correlation values are mostly not higher than the N content.
In aerobic conditions, unlike in submerged conditions, a high and highly significant negative correlation was found between polyphenols and N transformation Table 6. The results are similar to those of Vityakon et al. 2000 who only found significant correlations between polyphenols and mineral N in upland aerobic conditions but not in lowland paddies.In both aeration conditions, PBC had rather low correlations with mineral N relative to most other quality parameters although in submerged conditions PBC exhibited significant negative correlations with N mineralization while polyphenols did not Table 5. On the other hand, in aerobic conditions, PBC exhibited lower correlations with mineral N than polyphenols Table 6. This differs from Handayanato et al. 1997 who found PBC to be highly correlated with % N recovery by maize plants in soil amended with legume tree prunings.In both submerged and aerobic conditions, N content of the residues was the single parameter most highly correlated with N transformation. In aerobic conditions, however, polyphenols had high and significant negative correlations with N mineralization. However, the correlation values are mostly not higher than the N content.
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