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BANGLADESH JOURNAL OF FOREST SCIENCE

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

ISSN - Print: 1021-3279 | Online: -
Abstract:

An investigation was made to determine the possibility of making sulphate pulp from rubber wood (Hevea brasiliensis). The pulp obtained was low in yield and the permanganate number was very high ranging from 12.35 to 24.44 predicting a high bleach requirement. The physical strength properties of the pulps were moderate. Rubber wood pulp showed promise to be used for making moderate quality wrapping, bag and average quality printing papers.

Abstract:

Jam (Syzygium grandis), because of its availability and strength properties, was considered for substituting garjan ( Dipterocarpus spp. ) for making railway sleepers. Since treatment with creosote is normally the part of the manufacturing process for railway sleepers from nondurable wood, jam heartwood was treated with Lowry empty cell process using 40 ; 60 creosote-petroleum oil preservative in order to develop a treating schedule for jam sleeper. Treatments were performed with the various combinations of treating schedules with or without the pretreatment ot steaming-vacuum or incision. None of the treatments, however, could achieve penetration and retention recommended for the purpose of railway sleepers

Abstract:

This paper clearly shows that propagating bamboos from material other than seed is possible. Propagation of bamboos from offsets is well known and practised in village groves. The development of planting material from branch cuttings is a two-stage operation. The first is the striking of roots and the other, the development of a rhizome. Getting vigorous rooted stock is not enough because this does not always develop rhizomes ; for this the biological condition of the buds is very important. In bamboos, successful planting material must have all the characters of growing clumps, the most important of which is the production of new culms. Though offsets are a good propagating material, these are not suitable for large scale plantations due to handling difficulties, long branch cuttings with swollen basal nodes and 2-3 branch nodes physiologically similar and can be made branch 18-20 inch are morphologically and to function like the offset in suitable conditions. Such cuttings develop into good planting material in 6-30 months, depending on the biological condition of the cutting and the period of the year when the cuttings were taken. The superiority of the branch cutting over the offset is in the fact that it is easy to raise, economic to produce, and convenient to transport. At the moment the percentage of success is low, and further research in the factors governing the production of planting material from branch cuttings is necessary.

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Welcome to the Bangladesh Journal of Forest Science (BJFS) – a leading platform for advancing the knowledge and understanding of forest science in Bangladesh and beyond. Established with a commitment to excellence, BJFS serves as a cornerstone for researchers, practitioners, and enthusiasts dedicated to the sustainable management and conservation of forest ecosystems.