Fig. (9) The colony growth of Ralstonia solanacearum isolate ‘GRs-Mnt’ from ginger (Race 4) and ‘KAU-Av01’ from tomato on KM-TTC (peptone) formulations with peptone belonging to different brands, types or lots. P1-P19 represents 19 different KM-TTC peptone formulations with different brands and lots as in Table 2 and P20 represents CPGA control. Upper two rows in a plate show ‘GRs-Mnt’ and the lower two rows ‘KAU-Av01’. Considerable differences in the extent of colony growth and pigmentation as documented on day 2 in rear view.