Table 1.
Shoot dry weight, total root length and P content in shoot tissue of maize plants (cv. Jessy) on two low P soils. as affected by MCP inoculation. Soil 1 (sandy-loam, pH 6.1, PCAL 7 mg kg−1 soil) and Soil 2 (clay-loam, pH 5.9, PCAL 20 mg kg−1 soil) receiving N fertilization in in form of Ca-nitrate (NO3−) or DMPP-stabilized ammonium (NH4+) and a moderate soluble P supply (30 mg P kg−1). Data represent means and SD of five replicates. A one-way ANOVA with Tukey test was performed for data comparison. Different letters indicate significant differences between treatments (p < 0.05).
| Plant Response | MCP Treatments | Soil 1 | Soil 2 | ||
|---|---|---|---|---|---|
| NO3− | NH4+ | NO3− | NH4+ | ||
| Shoot DW [g] | no MCP | 3.32 ± 0.3 a | 3.96 ± 0.2 a | 2.09 ± 0.4 b | 2.63 ± 0.3 b |
| with MCP | 3.37 ± 0.1 ab | 3.90 ± 0.2 a | 2.28 ± 0.5 b | 3.4 ± 0.3 a | |
| Total root length [cm] | no MCP | 2718.9 ± 787.0 a | 1048.3 ± 170.2 b | 6454.6 ± 2954.1 b | 6836.5 ± 4455.3 b |
| with MCP | 2325.3 ± 232.9 a | 988.9 ± 448.6 b | 5615.1 ± 132.0 b | 9008.4 ± 1409.8 a | |
| P content [mg plant−1] | no MCP | 6.05 ± 0.8 b | 8.10 ± 0.4 a | 2.89 ± 0.5 b | 3.67 ± 0.4 b |
| with MCP | 6.50 ± 0.4 b | 7.60 ± 0.6 a | 2.95 ± 0.8 b | 4.93 ± 0.4 a | |