Abstract
Though Cinnamomum zeylanicum is a very important commercial aromatic bark yielding and oldest known tree spice of India, there are hardly any studies to understand the nature of wound healing and bark recovery. Further, optimal number of sprouts to be retained under coppice system to maximize the bark yield per tree in C. zeylanicum is not yet standardized. The present investigation was carried out to understand the influence of patch geometry and application of post-bark-extraction-protection treatments on bark regeneration in mature trees as well as to standardize an optimal number of sprouts to be retained under coppice system to maximize the bark yield per tree. In general, wound healing in C. zeylanicum occurred from the edge of the blaze and was quicker in the narrower patch than the broader patch; application of Bordeaux paste or neem seed kernel extract on the blazed area immediately after the bark extraction, resulted in significantly higher mean percent bark recovery and higher bark oil content than control. Allowing seven coppice sprouts per stem resulted in higher dry mass of bark per plant and higher bark oil than other treatments under coppice system. The results of the study would enable formulation of management strategies specifically for sustainable bark harvesting in Cinnamomum species.
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Acknowledgements
The authors are grateful to the Dean (Forestry), College of Forestry Sirsi, University of Agricultural Sciences, Dharwad, and the members of Advisory Committee for their valuable help during the research work. The authors are also grateful to Shri. Sadananda B. Goudar, Farmer, Edur, Soraba taluk, Shivamogga district and Prasad Hegde, Progressive farmer, Kankodlu, Yellapur district for their valuable cooperation in conducting the research work in their farms. We also thank Dr. Swamy, K.R., Ph. D. Students and M.Sc. Students of 2018-2020 batches and final B.Sc. Forestry 2018-2019 and 2019-2020 batches for their valuable help during collection of data and samples. This is a part of the Ph.D. (Forestry) thesis submitted to the University of Agricultural Sciences, Dharwad, by the first author.
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Hanumantha, M., Vasudeva, R. Influence of patch geometry, post-bark-extraction-treatment on bark recovery and standardizing number of sprouts for bark harvest from coppices in Cinnamomum zeylanicum blume: implications for sustainable harvesting. Environ Monit Assess 194, 214 (2022). https://doi.org/10.1007/s10661-022-09882-0
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DOI: https://doi.org/10.1007/s10661-022-09882-0