Table 5.2. Physical, chemical, and biological characteristics of soil samples.

Texture pH CEC Exchangeable cations QCField code <2 2- 63- pH pH Ca Mg Nu K N-tol NH,-N NOrN P-lol % C/N

~m 63 2000 H2O KCI c,molJ<,g' clDol,kg' cl.noJ,kg· cmolJ<,g' crnol,kg' mg" mg" mg" mg"

llm ~m (1:2.5) ( 1:2.5) I , , , ,ARDS 0- 0.25 3 4 93 77 7,2 1.6 1.7 0.4 <0.\ 0.2 158, I 12 26.2 88.6 02 15.18ID

ARRS -0.25 8, I 78 17 2,0 0,5 <0.1 0.3 187,8 1.0 20,9 95.1 03 16.51III

BDS 0- 0.25 III 4 6 90 8.0 6,8 1.6 1.0 0,2 <0.1 0.1 103.5 1.0 2.9 31.5 0.2 19,32BRS O· 0,25 ID 8, I 6,8 2.1 12 04 <0,1 0.1 1204 0.7 1.9 83.0 0.2 14.95

CEC: n=orUum acetate pH 8.2QC: Walkley and Black

95

Chap,., 5