Seasonal Dynamics of N, P, and K in an Organic and Inorganic Fertilized Willow Biomass System

Table 3

Nutrient content (mean and standard errors) of the biosolid compost and manure used as organic amendments for shrub willow biomass crops.

Organic material	Total N	Org N		P	K	Ca	Mg	S
	g kg^−1
Biosolid	18.1^†(0.24)	17.8^†(0.24)	0.3 (0.01)	14.0^‡(0.48)	6.2 (0.07)	36.3^‡(1.12)	3.5 (0.15)	6.3^‡(0.13)
Manure	15.4 (1.39)	15.2 (1.45)	0.2 (0.12)	6.0 (0.39)	8.2^‡(0.69)	10.1 (0.59)	3.5 (0.18)	3.3 (0.17)

Significant difference between biosolids and manure at alpha level (); ^‡significant at alpha level ().