Black scurf Stem canker Treatment DI% Reduction in DI (%) DI% Reduction in DI (%) Uninfested controls 0 b - 0 c - Infested controls 100 a - 82.14 d - S. marcscens 63.53a 36.47 0c 100

Table 1: Effect of S. marcescens treatment on Rhizoctonia stem canker and black scurf incidence (DI) noted on potato plants eight weeks post-planting in substrate artificially infested with R. solani. Means followed by the same letter are not significantly different from each other at P=0.05 based on Newman-keuls test.