TABLE 2.
Incidence and populations of R. solanacearum biovar 2 in water samples by direct isolation on modified SMSA agar from March 2000 to August 2001
| Site | Distance (km)a | No. of positive samples/total no. of samples
|
Concn (CFU/ml) of bacteriumb | |
|---|---|---|---|---|
| ≥14°C | <14°C | |||
| 1 | 0 | 7/13 | 0/13 | 15-80 |
| 2 | 3 | 7/13 | 1/13 | 10-60 |
| 3 | 6 | 6/13 | 0/13 | 10-40 |
| 4 | 9 | 1/13 | 0/13 | 15 |
| 5 | 12 | 0/13 | 0/13 | 0 |
| Total | 21/65 | 1/65 | ||
a
Distance downstream from the first sampling site. The confirmed potato outbreak was located between sites 2 and 3 at similar distances.
b
Data are from analyses of water samples in duplicate and show ranges of concentrations.