A Half-yearly Peer Reviewed Journal of Bangladesh Forest Research Institute

ISSN - Print: 1021-3279 | Online: -

This paper deals with the effects of soil physical properties on sissoo (Dalbergia sissoo Roxb.)
mortality. A research was conducted at different severely affected sissoo mortality sites of Chittagong,
Chuadanga, Comilla, Kushtia, Meherpur and Tangail districts of Bangladesh during 2008-2010. During
pre-and post monsoon and drought period soil and root samples were collected from the different sites. Soil
properties (soil texture, pH, organic matter, moisture content and bulk density) were analyzed and fungal
strains, mites and bacteria were isolated. From the analyses ofdata, average moisture content at the 0-30 cm
soil depth was found higher in Daulotpur (18.58%) followed by Jibonnagar (18.11%), Potia (15.92%) and
Mehepur Sadar (15.02%) respectively and lower in all sites ofTangail district (5.52-1.76%). It is observed
that fine textured soil and root interference enhances pathogenic attack. Findings reveal to conclude that
moisture stress period as well as temperature supports activities of Fusarium solani and mortality

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