Table 1.
Colony forming units spreadplate (CFU-S) assay data. Total colony forming units (CFU) recovered (% recovery) from all inoculated plates (n = 10).
| Soils | Total CFU/10 Plates (Relative Percent Recovery) | |||||
|---|---|---|---|---|---|---|
| (Number of Spiked Endospores/9 Grams Soil) | ||||||
| 0 | 4.5 | 45 | 225 | 675 | 1350 | |
| Loam 1 | 0 | 0 | 2 (55.6) | 10 (54.9) | 28 (51.9) | 72 (66.7) |
| Loam 2 | 0 | 2 (556) | 1 (27.8) | 9 (49.5) | 14 (25.9) | 61 (56.5) |
| Loam 3 | 0 | 1 (278) | 0 | 12(66.7) | 32 (59.3) | 82 (75.9) |
| Sand 1 | 0 | 0 | 0 | 16 (89.9) | 20 (37.1) | 42 (38.9) |
| Sand 2 | 0 | 0 | 2 (55.6) | 13 (71.4) | 47 (87.0) | 80 (74.1) |
| Sand 3 | 0 | 0 | 0 | 3 (16.7) | 51 (90.7) | 66 (59.3) |
| Clay 1 | 0 | 0 | 6 (166) | 25 (138) | 91 (169) | 178 (165) |
| Clay 2 | 0 | 0 | 5 (139) | 22 (121) | 673 (>500) | 176 (163) |
| Clay 3 | 0 | 1 (278) | 5 (139) | 24 (132) | 59 (109) | 159 (147) |
Expected recovery totals using 10 spread plates of 200 ul for each spike level for all soil types—0 = 0, 4.5 = 0.36 total CFU, 45 = 3.6 total CFU, 225 = 18.2 total CFU, 675 = 54.0 total CFU, 1350 = 108.0.