Research Article
Soil Application of Tannery Land Plaster: Effects on Nitrogen Mineralization and Soil Biochemical Properties
Table 1
Chemical characteristics of tannery land plaster (TLP).
| Parameter | Units | Value (all data are expressed on a dry matter basis) |
| Water content | (g kg−1) | 730* | Total solids (TS) | (g kg−1) | 270* | Ash | (g kg−1) | 660 | Volatile solids (VS) | (g kg−1) | 90* | pH (in water) | pH | 10.6 | Electrical conductivity (EC) | (dS m−1) | 3.6* | Total organic carbon (TOC) | (%) | 17 | Total nitrogen (TN) | (g kg−1) | 57 | NH4 +-N | (g kg−1) | 0.7 | NO3 −N | (g kg−1) | 0.3 | C : N ratio | — | 3 | Total P | (g kg−1) | 3.1 | Total K | (g kg−1) | 0.24 | Total S | (g kg−1) | 123 | Total Ca | (g kg−1) | 175 | Total Mg | (g kg−1) | 3.9 | Total Na | (g kg−1) | 2.3 | Total Fe | (mg kg−1) | 755 | Total Cu | (mg kg−1) | 3.3 | Total Zn | (mg kg−1) | 8.3 | Total Mn | (mg kg−1) | 36 | Total Co | (mg kg−1) | 9.6 | Total Al | (mg kg−1) | 373 | Total Cd | (mg kg−1) | <1.0 | Total Ni | (mg kg−1) | 1.6 | Total Pb | (mg kg−1) | <0.5 | Total Cr | (g kg−1) | 52.0 | Cr(VI) | (mg kg−1) | <0.5 |
|
|
*Fresh matter.
|