Holy Basil (Ocimum sanctum), is a short lived perennial plant belonging to family Lamiaceae. Its leaves are medicinally important and used as a fresh or dried herb.
A diseased leaf was spotted on the Tulsi plant growing in my terrace. I plucked the leaf and saw its tips had turned necrotic. On magnifying I could see certain hypertrophied areas.
Browning on tips and edges as well as hypertrophied areas
I prepared temporary mount of the diseased part and observed under the foldscpe to find rounded dark round localised patches. Are these cysts or simple localized necrotic lesions?
I am unable to identify the causal organism.
Jasveen, GGDSD College, Chandigarh