Fig. (3) Comparing the colony growth of Ralstonia solanacearum ‘NH-Av01’ on KM-TTC with different types of peptone. New stock of Hi Media bacteriological peptone (A1) and an older lot (A2) and two lots of type-1 peptone including a recent (B1) and an older lot (B2) used in KM-TTC and documented photographically on day 1 (a) and day 2 (b). In grey scale, high red pigmentation appears dark in color and low pigmentation whitish.