Regenerative potentials and mortality of one year and two year old culms of Bambusa balcooa and B. vulgaris were studied. One year old culms of both the species were found to be significantly superior stock for the production of new culms. Mortality of new culms from two-year old parents was higher. One-year old healthy culms were found to produce significantly higher number of new culms than that from partly blighted one-year old culms of both the species.

Mortality was observed to be significant in August, the damage having its maximum effect by November. All the new culms which remained in the 0.4 m (or less) height category were dead by September/October while culms in the 5 m (or less) and 12 m (or less) height categories sufferred from blight about 17+10 and 7+5 per cent of culm heights respectively.

pH of soils of bamboo clumps were not associated with the severity of blight prevalent in the clumps. Carbon and nitrogen level in all height categories were comparable in case of both healthy and blighted culms, indicating absence of association of these factors with the blighted condition.