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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:

A preliminary study on veneer cutting and gluing properties of Albizzia
moluccana Miq., an exotic species, showed that the species is suitable for making good
quality veneer and plywood and can be used for making tea boxes and crates. It
is also suitable for making corestock.

Abstract:

The paper explores the statistical ground of preparing forest working plans and
provides a tentative list of required data and studies. It is observed that the
insufficiency of required data and lack of studies have resulted in serious shortcomings
in the present working plans of Bangladesh. The targets are not found to be
established on an analytical basis and the prescriptions and programmes do not
reflect the true requirements of the economy. Thus the plans are not consistent
with the objective of producing the maximum contribution to the society. In order
to improve the quality of the working plans it has become urgently necessary to
develop forestry sector statistics in Bangladesh. The paper suggests steps for accelerating
developments in this respect. The steps are concerned with institutional
changes, provision of adequate field staff and funds, organising training programmes
and formulation of a plan for statistical development by the Working Plans Division
of the Forest Department in close co-operation with the Planning Commission
and the Forest Research Institute.

Abstract:

Shrinkage and density were studied for Teak (Tectona grandls) of
five age groups ranging from 20 to 60 years at three height positions.
Linear shrinkages were evaluated from green condition to 15 and O
percent moisture contents. Density was determined on the basis of
green and ovendry volumes. Shrinkage and density were found to be
Independent of the height of the stem. The overall shrinkage and
density were affected by the age factor. The variations in the average
values of different age groups were, however, not observed to be
significantly different in all cases.

Abstract:

Kiln drying is a common practice in seasoning
timbers all over the world. In Bangladesh,
kiln drying of timber is employed by the timber
complexes of the Bangladesh Forest Industries
Development Corporation (BFIDC) and some
government and private organisations. In
order to facilitate the proper seasoning of
timbers, kiln drying schedules have been
developed at the Forest Research Institute,
Chittagong (Ali, Sattar and Talukdar 1975;
Sattar 1980). In conventional kiln drying,
low temperature and high humidity are
generally employed in the initial stages of
drying, which ultimately make the process
slow. The need for accelerated drying of
timbers, without deteriorating the quality of the
product itself, is thus felt. High temperature
drying was first envisaged to alleviate the

Abstract:

Bamboos play a very important role
in the rural economy of South and South-
East Asia. Probably the usefulness of
bamboo is nowhere as great as in Bangladesh.
What with the population explosion and
wholesale depletion of forest wealth during
the last decade or so, Bangladesh is suffering
from acute shortage of wood. Bamboos
from the village groves which used to be
the most important material for house
construction, scaffolding, ladders, mats, baskets, fencing, containers, tool-handles,
pipes, toys, musical instruments, furniture,
handicrafts and a host of other utilities
are in very short supply these days (Lessard
and Chounard in 1980). Bangladesh
once used to be very rich in bamboo
species. Karnaphuli Paper Mills was orginally
planned to produce 120 thousand tons of
paper a day with Muli bamboo (Melocana
baccifera) as the fibrous raw material.
However, it was found later that these

Abstract:

Teak has always been the principal
species in the plantation programmes of
Bangladesh. More than 70% of total plantation in the hill forests is composed
of Teak (Andersen 1969, Slavicky 1978,
White 1979).

Abstract:

Mangium (Acacia mangium willd) is a
promising fast-growing multipurpose species
of the family Leguminosae and subfamily
Mimosoidcac. It is indigenous to
northern Australia, Papua New Guinea
and eastern Indonesia. The best known
stands are found in Queensland, Australia,
where the temperature ranges from 12°c
to 34°C and about 4,400 mm and 700 mm
rainfall are received annually during the
rainy and dry seasons respectively.

Abstract:

A kraft mill, even by utilizing the best available technology,
cannot be made completely odour-free. However, there are several
sulphide-free and non-sulphur pulping methods. Among these, sodaanthraquinone
(AQ) pulping process seems to be promissing.

The most practised chemical to-day is the kraft process. 95% of the present production of chemical 74 Pulp yield can be increased by using polysulphide, H2S or AQ
in the cook. The first two are used exclusively in kfraft cooking, and
so the odour problem cannot be overcome. AQ on the other hand,
is also suitable in a sulphur-free cook which eliminates the odour
problem of the pulp mill. Soda-AQ pulping is more suitable with
hardwoods.

Abstract:

Pigeon pea grows as a perennial plant,
but is cultivated as an annual or biennial
crop. It is a much branching woody
shrub and grows to a height of four meters.
The branches spread upto two meters.
The flowering period varies from 65 to
200 days, the early selected cultivars generally
maturing in 120-130 days. Arhar is a tropical crop and most
adapted to drought conditions. Soil fertility
not being a limiting factor, it can be
grown on marginal to low fertility land
(Gowda and Kaul 1982). Due to the ageold
system of cultivation, less than a ton
of Arhar seeds per hectare is available
from about 3600 ha of land -under Arhar

Abstract:

Present seed use (11 kg for a nursery bed of 1.2 m x 12 m)
for kcora {Sonneratia apetala Buch.-Ham.) was found to be at least
55 times higher than the actual requirement for producing usable seedlings
in the Chittagong coastal area. No significant difference was
observed in respect of availablility of seedlings when pregerminated
and ungerminated seeds were sown. Seeds sown by broadcasting
showed significantly better performance than dibbling.

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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.