Bamboo productivity under traditional silvicultural management practice in upper Brahmaputra valley agroclimatic zone (UBVZ), Assam, N. E. India.
Sabi Gogoi,  Debojit Neog
Abstract - Field survey on homestead garden, community plantation sites and also in rural patch vegetations was conducted to find out the dominant bamboo species under cultivation in upper Brahmaputra valley agroclimatic zone, Assam, N. E. India. Bamboo population comprised of mainly Bambusa tulda, B. balcooa, B. nutans, B. pallida, Dendrocalamus hamiltonii and D. giganteus. Bambusa tulda, B. balcooa, B. nutans are the dominant species and occupies 90 % of area under bamboo cultivation. Preference of these bamboo species is largely governed by their utilization in domestic, commercial or industrial sector and current market price. Productivity and data on different yield attributing character was collected from bamboo plantations upto 5 years age. Fresh biomass was recorded and with spacing of 5 x 5 m the yield of Bambusa tulda was found 240 tons/ha, B. Balcooa was 257 tons/ha on spacing of 7 x 7 where as in case of B. nutans it was 414 tons/ ha with 5 x 5 m spacing. Yield attributing parameters of different bamboo species was recorded. The circumference of B. tulda was 11.93 m ± 7.09, B. balcooa was 7.90 m ± 5.33 and B. nutans was 14.02 m ± 5.06. Culm length was 22.65 m ± 6.01 in B. tulda, 23.33 m ± 7.05 in B. balcooa and19.79 m ± 6.66 in B. nutans. Culm girth was recorded 23.88 cm ± 1.25 in B. tulda, 27.81 cm ± 3.71 in B. balcooa and 21.78 cm ± 1.6. in B nutans. Internode length was 43.21 cm ± 2.5 in B. tulda, 24.07 cm ± 1.48 in B. balcooa and 40.64 cm ± 2.29 in B. nutans. Number of shoot production was recorded in 9.20 ± 1.48in B. tulda, 7.60 ± 1.14 in B. balcooa and 11.2 ± 2.48. in B. nutans.
Keywords- Keywords –Bamboo, Productivity, Yield attributes, dominant, species.
Cite this Article
Sabi Gogoi,  Debojit Neog,   "Bamboo productivity under traditional silvicultural management practice in upper Brahmaputra valley agroclimatic zone (UBVZ), Assam, N. E. India."
, International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.8, Issue 3, pp.426-430, August 2020, Available at :http://www.ijedr.org/papers/IJEDR2003062.pdf