Under submerged conditions, N alone can explain up to 60% of the variance equation not shown.
When polyphenol/ N ratio is added into the equation the value increased to 62%.
This highlights the importance of N content of organic materials in controlling the N transformation.
Under aerobic conditions, N alone can explain 53 % of the variance in N transformation but by adding polyphenol the prediction was improved to 62% equations not shown.
Polyphenol appears to be the second most influential quality factor in residue N transformation under aerobic conditions