| dc.description.abstract | A survey was conducted on the incidence and severity of red rust disease of tea (Cephaleuros
parasiticus Karst.) in different tea estates of Chittagong region during April to July 2014.
The surveyed areas included in this study were Mohammod-nagar tea estate (Narayonhat),
Datmara tea estate (Datmara), Karnafuli tea estate (Lelang), Neptune tea estate (Narayonhat),
Koiyachhora tea estate (Vuzpur-Manikchhari), New Datmara tea estate (Datmara),
Panchabati tea estate (Haroalchhari), Ramgarh tea estate (Ramgarh-Baganbazar), Rangapani
tea estate (Rangamatia), Baromasia tea estate (Subail). Disease incidence varied from 51% to
64% and disease severity varied from 12% to 17%, respectively in different tea estates. The
highest (64.33%) disease incidence was found in Baromasia tea estate and the lowest
(51.67%) in New Datmara tea estate. Disease incidence and severity was moderately affected
by different topographical conditions like hill, hillock and flat areas. Comparatively lower
amount of disease was observed in hill areas as compared to hillock and flat areas of different
tea estates. The average red rust disease incidence in hill areas was 56.90%, whereas in
hillock and flat areas it was 60.13% and 61.47%, respectively. Furthermore, significant
variation in disease reaction was found in shaded and un-shaded areas. In shaded areas
disease incidence was 57.67% and in un-shaded areas it was 61.60%. | en_US |
