Table 5.
Effect of MCP inoculation on total Nmin, NO3-N [mg kg−1 soil DM] and NH4+−N [mg kg−1 soil DM] after a culture period of 28 DAS and 41 DAS on a clay-loam field soil (pH 5.9) with low P availability (Soil 2) supplied with moderate soluble P fertilization (30 mg P kg−1) and N in form of Ca-nitrate (NO3−) or DMPP-stabilized ammonium (NH4+) Data represent means and SD of five replicates. A one-way ANOVA with Tukey test was performed. Different letters indicate significant differences between treatments (p < 0.05).
| N Form | MCP Treatments | Nmin Total | Soil NO3−-N | Soil NH4+-N | |
|---|---|---|---|---|---|
| 28 DAS | NO3− | no MCP | 60.45 ± 5.1a | 60.45 ± 5.1 a | 0 ± 0 c |
| with MCP | 45.46 ± 2.8 b | 45.46 ± 2.8 b | 0 ± 0 c | ||
| NH4+ | no MCP | 42.58 ± 4.1 b | 42.12 ± 4.1 b | 0.46 ± 0.05 a | |
| with MCP | 19.34 ± 0.5 c | 19.26 ± 0.4 c | 0.08 ± 0.04 b | ||
| 41 DAS | NO3− | no MCP | 2.73 ± 1.0 b | 2.67 ± 0.9 bc | 0.06 ± 0.02c |
| with MCP | 3.72 ± 4.4 b | 3.69 ± 4.4 b | 0.06 ± 0.04c | ||
| NH4+ | no MCP | 7.09 ± 1.6 a | 6.8 ± 1.4 a | 0.29 ± 0.05b | |
| with MCP | 2.42 ± 0.2 b | 2.06 ± 0.1 bc | 0.39 ± 0.04 a |