FIG. 3.

Interaction means of populations of Salmonella Poona in the presence of three different antagonists on Golden Delicious apple plugs stored at 25° over 7 days. In the table, treatment means within columns with different letters (a, b) and time means within rows with different letters (x, y, z) are significantly different at the 0.05 level. The treatment × storage time means with all nonzero log CFU values were analyzed as a three-factor general linear mixed model with treatment and storage time as the fixed factors and experiment as the random block factor. As experiment accounted for little variability, about 2% of the residual, all treatment × storage time values were used in a two-factor general linear model for treatment and storage time. To correct for variance heterogeneity the variance grouping technique was used. Means and mean comparisons are given. As the treatment × storage time interaction was statistically significant, mean comparisons are given.