Table 1 Soil and manure types used in this study including measured SDZ concentrations and sul-gene specific ΔCt values
Short name | Sample description | SDZ concentration (µg per kg) | ΔCt values: | |
|---|---|---|---|---|
sul1 | sul2 | |||
M | Untreated cow manure | BD | 16.8 | 12.6 |
MSE | SDZa amended to M 37 days before planting | 7900 | 13.3 | 3.91 |
MSL | SDZa amended to M 2 days before planting | 10,600 | 14.4 | 9.86 |
S | Untreated field soil | BD | 12.2 | 10.6 |
S-M | Soil mixed with M (3.5% on weight basis) | BD | 12.7 | 11.3 |
S-MSE | Soil mixed with MSE | 67 | 12.7 | 6.84 |
S-MSL | Soil mixed with MSL | 82 | 12.9 | 9.96 |
S-NPK | Soil mixed with 0.4 g NPK per kg soil | BD | 12.5 | 10.8 |