Table 4.
Instances where manuring had a significant effect on the abundance of viable populations of the indicated bacteria in soil cropped to the indicated vegetable or on the indicated vegetable at harvesta
| Bacterium | Vegetable(s) |
|||
|---|---|---|---|---|
| 2011 |
2012 |
|||
| Swine manure | Dairy manure | Swine manure | Dairy manure | |
| Total coliforms | Carrot, radish, tomato | Carrot, radish, pepper, pepper | Tomato | Tomato |
| E. coli | Cucumber | Cucumber | ||
| Enterococcus | ||||
| Fecal coliforms | NA | NA | ||
| C. perfringens | NA | NA | Carrot, radish, lettuce | |
| Aeromonas sp. | NA | NA | ||
| Salmonella sp. | ||||
| Yersinia sp. | NA | NA | Carrot | Carrot |
| Campylobacter sp. | Carrot | |||
| Listeria sp. | ||||
a
All data are referenced to corresponding plots fertilized inorganically. NA indicates not analyzed. Bolded script, instances where manuring increased the viable soil population enumerated; bolded and underlined script, instances where manuring decreased the detected viable soil population; plain script, instances where manuring increased the viable population enumerated from vegetables; plain underlined script, instances where manuring decreased the populations enumerated from vegetables.