Predicting Mineral N Release during Decomposition of Organic Wastes in Soil by Use of the SOILN_NO Model

Table 8

Adjustment of pools and parameters in the Management Routine in SOILN_NO (see text for explanation) in order to reproduce the characteristic N mineralization curve for the organic matters. Default parameter values are given in brackets in column headings.

		Management routine (Pools and parameters)
			Green		Manure
Experiment/treatment					Faeces		Bedding			NH4
		Green (% of tot. N)	LF_GR. ^4a (0.7)	CN_GR.^5a (10)	Faeces (% of tot. N)	CN_FA.^5b (24)	Bedding (% of tot. N)	LF_BED.^4a (0.05)	CN_BED.^5c (70)	NH4-N (% of tot. N)
Incubation exp.
SS1							100	0.99	25
SS2							37	0.99	18.5
OW3					92.3	1	7.7	1	25
OW4		8.3		1
SS5							100	0.28	5.5
MF										34.6
CF					61.5		38.5	0.9	10
Lysimeter exp.	Soil
OW4	A	50	0.5	19
CF	A				46.7^1	90	46.7^2,3	0.9	10
OW4 + CF	A
OW4	B	50	0.5	17.6
CF	B				46.7^1	70	46.7^2,3	0.9	1
OW4 + CF	B
OW4	C	50		19						13.1^1/3.3^2
CF	C				46.7^1	90	46.7^2,3	0.9	10	18.3^1/1.1^2
OW4 + CF	C
OW4	D	50		15						5.7^1/0.6^2
CF	D				46.7^1	10	46.7^2,3	0.9	10	11.7^1/1.7^2
OW4 + CF	D

¹In year 1, ²In year 2, ³In year 3.
⁴Coefficient expressing the fractionation between easily decomposed (litter 1) and more stable (litter 2) fractions in ^aGreen manure and ^bBedding.
⁵C : N ratios of  ^aGreen manure, ^bFaeces and ^cBedding.