Division Interpretation of selective plating test resultsF1

The selective plating test is negative if no bacterial colonies are observed after six days or if no presumptive colonies typical of R. solanacearum are found, provided that no inhibition is suspected due to competition or antagonism by other bacteria and that typical R. solanacearum colonies are found in the positive controls.

The selective plating test is positive if presumptive R. solanacearum colonies are isolated.