FIG. 4.

Interaction means of populations of antagonists in the presence of either S. enterica serovar Poona or L. monocytogenes from Golden Delicious apple plugs stored at 10 or 25°C over 7 days. The recovered antagonist populations were analyzed separately. As experiment accounted for very little variability, about 1% of the residual, the values were modeled as a two-factor model. To correct for variance heterogeneity the variance grouping technique was used. As time was statistically significant the mean comparisons are indicated with different letters (significant at P < 0.05). There was no difference between the growth of the antagonists. The difference over time was significant and was calculated from the means at 10 and 25°C combined.