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Possible role of the soil in the sissoo forest (Dalbergia sissoo Roxb.) decline in the Nepal terai

Author

Listed:
  • S.P. Sah

    (Department of Biological and Environmental Sciences, Kathmandu University, Dhulikhel, Kavre, Nepal)

  • C.K. Sharma

    (Department of Biological and Environmental Sciences, Kathmandu University, Dhulikhel, Kavre, Nepal)

  • F. Schested

    (Department of Biological and Environmental Sciences, Kathmandu University, Dhulikhel, Kavre, Nepal)

Abstract

This paper deals with the recent sissoo (Dalbergia sissoo Roxb.) decline in the plain land (locally called as terai) of Nepal. This study has made an attempt to find the possible causal factor of this decline. The study has made some initiative in this aspect and has made a comparative study of 30 different sissoo forest (both natural and plantation) stands. The symptoms of the sissoo decline were found to be varied. But in most of cases, the top dying of crown was found to be the most prevalent. The top dying starts from the top of the tree and progressively proceeds downwards to the stem. The leaves become yellow. Until now, it has been assumed that only the plantation forests have been affected but this study observed the sissoo decline also in natural forest sites. We analysed various components of physical soil characteristics and we did not find any correlation between the physical soil factors and the sissoo decline. We concluded from this study that the soil is not the sole responsible factor involved in the sissoo decline Furthermore, this paper discusses various aspects of the sissoo decline and possible causal factors concerned. Finally, future management strategies regarding the sissoo management are suggested.

Suggested Citation

  • S.P. Sah & C.K. Sharma & F. Schested, 2003. "Possible role of the soil in the sissoo forest (Dalbergia sissoo Roxb.) decline in the Nepal terai," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 49(8), pages 378-385.
    • Handle: RePEc:caa:jnlpse:v:49:y:2003:i:8:id:4140-pse
    DOI: 10.17221/4140-PSE
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