Table 1.

Physicochemical property of the soil

Parameter
Sand (%)	66.0
Silt (%)	24.2
Clay (%)	12.6
pHa	7.3
Water holding capacity (ml g−1 soil)	0.61
Electrical conductivity (m mhos)	230
Organic matter (%)b	1.44
Total nitrogen (%)c	0.077
NH4 +—N (µg g−1 soil)d	7.56
NO2 −—N (µg g−1 soil)e	0.39
NO3 −—N (µg g−1 soil)f	0.85

^a1:1.25 = Soil:Water slurry

^bWalkley–Black method (Jackson 1971)

^cMicro-Kjeldhal method (Jackson 1971)

^dNesslerization method (Jackson 1971)

^eDiazotization method (Barnes and Folkard 1951)

^fBrucine method (Ranney and Bartlett 1972)