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Y. C. Tripathi , Ajay Thakur , T. C. Bhuyan

Abstract

India is one of the richest countries in Bamboo population covering 12.8% of the total forest land of the country. However, the yield per hectare is dismally low due to poor management, unscientific exploitation and low investment in raising preferred bamboo species. Very little attention has been paid until now to the management of natural bamboo stands and to ensure sustained supply of this raw material that result in constraining and reducing the potential benefits and value of bamboo applications. The current demand of bamboo for various purposes is estimated at 26.69 million tonnes as against the supply of 13.47 million tonnes. The average per hectare annual productivity of bamboo in India is about 1 MT/ha which is much less than the world's average. Low per hectare yield indicates poor management of existing bamboo plantations in forest and non-forest areas. It has been shown in case of some species that intensive cultural operations and scientific management of bamboo plantations can produce much higher yield. Establishment and management aspects of bamboo plantation for enhanced productivity are discussed in the paper.

Keywords

Bamboo, Economic Status, Demand-Supply, Productivity, Management

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V. K. W. Bachpai , S. Pattanaik , K. C. Pathak , T. C. Bhuyan , K. Hazarika , R. Bhatt Acharyya , A. Kharshi-ing

Abstract

Thirty-two Bambusa tulda plus clumps were selected using the selection index method and assembled at the germplasm bank of Rain Forest Research Institute, Jorhat. The plus clumps were from different geographical regions of Assam and Meghalaya. Growth study of selected plus clumps in the germplasm bank revealed significant differences among genotypes (at P<0.05 level) for all the parameters height, dbh, and age. The Duncan Multiple Range Test (DMRT) grouped the plus clumps into 15 groups on the basis of height and the plus clump RFRI/BT/511 from Madhavpur of Jorhat district was found to be the best performer (l3.35m), while the plus clump RFRI/BT/502 from Sonapur of Kamrup district was found to be the least best performer. Further, the Duncan Multiple Range Test grouped the plus clumps into 12 groups on the basis of the dbh, with the plus clump RFRI/BT/509 from Balijan, Titabor of Jorhat district (95.32 mm) as the top performer and the plus clump RFRI/BT/502 from Sonapur of Kamrup district as the least best performer. Correlation study showed positive correlation between height and dbh and height was negatively correlated with that of age. A multiple regression model for prediction of height using dbh and age was established.

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T. C. Bhuyan , S.A.S. Biswas

Abstract

Glycosmis cymosa (Kurz) Naryanswamy, collected from Simsangiri Range of East Garo Hills is described in detail as an addition to the flora of Garo Hills.

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P. K. Verma ¹, T. C. Bhuyan ², N. S. Bisht ²

Affiliations
1 Rain Forest Research Institute,Sotai Ali, Deovan, Post Box # 136, Joraht-785001(Assam), IN
2 Rain Forest Research Institute, Sotai Ali, Deovan, Post Box # 136, Joraht -785001(Assam), IN

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Bhabesh Gogoi ¹, T. C. Bhuyan ²

Affiliations
1 Department of Soil Science, Assam Agricultural University, Jorhat, Assam, IN
2 Rain Forest Research Institute, (ICFRE), Jorhat, Assam, IN

Abstract

Bamboo can regenerate very fast without replanting and is highly effective in restoring soil degradation. However, impacts of bamboos on soil properties differ at species level. Therefore, the present study was undertaken to quantify and to make a comparative assessment in the status of soil properties after 12 years of bamboo plantations. In the study, significant variations were observed in physico-chemical properties viz. bulk density, water holding capacity, pH, electrical conductivity and organic carbon of soil. Soil available N,P and K were increased over initial in case of all bamboo species under study.Result revealed that the soil microbial biomass carbon measurements ranged between 294 and 510 μg/g, which represented 2.00 to 3.47%of total organic carboninsoil. The present paper describes in detail the physico-chemical and biological properties of soil as affected by 12 year plantations of 10 different bamboo species in an Inceptisol of Assam, India.

Keywords

Bamboos, Soil Properties, SMBC, Comparative Assessment.

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