Vertical Phosphorus Migration in a Biosolids-Amended Sandy Loam Soil in Laboratory Settings: Concentrations in Soils and Leachates

Table 1

Generalized linear mixed model (GLMM) results for various P pools.

⁢	Inorganic P				Organic P
	Water-soluble P (AIC 48.3)	Loosely bound P (AIC 24.5)	Metal-bound P (AIC 42.2)	Calcium-bound P (AIC 118.5)	Labile P (AIC 27.7)	Moderately labile P (AIC 29.8)	Nonlabile P (AIC 32.4)
	-value
Treatment (biosol. versus ref.)	0.3213	0.8956	0.4507	0.7984	0.5585	0.6280	0.5083
Location (top versus bottom)	0.5762	0.7523	0.4934	0.5819	0.3401	0.5174	0.0551
Time	<0.0001	<0.0001	<0.0001	0.0017	<0.0001	<0.0001	<0.0001
Time × treatment	0.8539	0.8745	0.5661	0.5791	0.8268	0.9211	0.9942
Time × location	0.0248	0.6792	0.8801	0.6515	0.7214	0.8461	0.2205