BANGLADESH JOURNAL OF FOREST SCIENCE
A Half-yearly Peer Reviewed Journal of Bangladesh Forest Research Institute
A Half-yearly Peer Reviewed Journal of Bangladesh Forest Research Institute
The paper presents the anatomical features of bamboo leaves in transverse
section for 26 bamboo species underseven genera occurring in Bangladesh both in wild
and in cultivation. The results are presented in a tabular form. The findings indicate that
anatomical features ofbamboo leavesin transverse section work as taxonomic characters
at species level. The paper also provides a dichotomous key to identify bamboo species
occurring in Bangladesh based on leaf anatomical characteristics.
This paper deals with detailed macroscopic and microscopic characteristics of
five timber species, namely Calophylluni polyanthum Wall., Garcinia cowa Roxb.,
G. xanthochynius Hook., Kayea floribimda Wall, and Mesuaferrea Linn, of Guttiferae from
Bangladesh. Dichotomous keys based on both the macroscopic and microscopic
features have been developed for their identification.
Casuarina equisetifolia seedlingsinoculated with different biofertilizerssuch as
Azospirillum, Phosphobacterium, VAM fungi and Frankia and their combinations were
planted in farmland. Growth parameters were collected at bimonthly intervals up to
30 months. Biomass was estimated 24 months after planting. Maximum height, girth
at breast height (gbh) and total biomass were obtained in the combined application of
Azospirillum, Phosphobacterium, VAM and Frankia. The combination of VAM +
Frankia among double inoculation, and the combination of Azospirillutn, VAM and
Frankia in triple inoculation also proved to be the best treatment in promoting the
significant total height, gbh and total biomass production
Kadam (Anthocephalus chinensis (Lam.) Rich ex. Walp.}, a fast growing
multipurpose tree species, is grown in the homesteads and planted in the forest areas of
Bangladesh. The plantations of this species often suffer from the attack of the defoliator,
Arthroschista (=Margaronia) hilaralis Walker (Pyralidae : Lepidoptera). This paper
describes distribution, host plants, nature and impact of damage, life history, number of
generation, population fluctuation, natural enemies and management of the pest. The
pest completes its life cycle within 23.0 + 3.0 days. It has 9-10 generations in a year.
Younger trees, usually 2-5 years of age, were found most heavily infested. The peak
infestation occurred during August-September. Two parasites, Apanteles balteatea Lal.
(Braconidae : Hymenoptera) and Brachytneria lasus Walk. (Chalcididae: Hymenoptera),
caused a mortality of about 40% of the pest population. Application of Thuricide
(Bacillus thnringiensis) 40 WP or Malathion (malathion) 57 EC @ 0.1% concentration was
effective in controlling severe infestation. Hand collection and destruction at the initial
stage of infestation could suppress and provision of overhead orside shade for the tree
could prevent the attack of this pest
The bagworm, Cryptothelea crameri Westwood (Psychidae : Lepidoptera) is an
important pest of many ornamental, horticultural and forest plants in Bangladesh. The
larva feeds on young leaves and tender bark by making and living within a portable bag
of leaves, twigs, barks, spines, etc. The biology, host range, number of generations, and
seasonal abundance of the pest have been dealt with in this paper. Brachymeria sp.
(Braconidae: Hymenoptera) wasfound to parasitize its larva. The pestcould be collected
and destroyed by hand. It could also be controlled by the foliar application ofmalathion
(Malathion 57 EC) at 0.1% concentration.
Dendrocalamus giganteus, known as giant
bamboo, is the tallest among the bamboos,
measuring on an average about 25 m high and 25
cm diameter. It is cultivated in Cox’s Bazar,
Banderban, Chittagong, Mymensingh, Panchagar,
Jessore and some other Districts ofBangladesh. Its
local names are wara bans, bhudumbans, bombai
bans, raja bans, kanchan bans, etc. It grows
luxuriantly in all the flood free areas.
It was reported earlier that D. giganteus
flowered at Calcutta Botanical Garden, India in
1860-61 and again in 1888 and in Burma in 1892
(Gamble 1896). Lahiri (1974) reported that one
clump introduced during 1880-88 at Kurseong
Division, India flowered in 1974. Bahadur (1979)
reported flowering of this species at Forest
Weight
(gm)
0.042
Weight
(gm)
0.050
Length
(cm)
0.726
Width
s/s (cm)
0.32
Width
v/d (cm)
Average* 0.286
Maximum
Research Institute campus, Dehra Dun in 1979. As
reported by Gupta (1982), one clump flowered in
1981 along the Tuli-Wokha road of Nagaland,
India.
The paper describes the fibre length and ray height of the five tree species,
namely Calophyllum polyanthum Wall., Garcinia cowa Roxb., G. xanthochymus
Hook., Kayeafloribimda Wall, and Mesuaferrea Linn, of the family Guttiferae. In
G. cozva and G. xanthochymusthe fibre length and ray height are higher and longer
than those of the other species. These two microscopic features work as good
characters in delimitating the species of Guttiferae. There is a progressive trend
of increase of fibre length and ray height from near pith to sapwood for all the
species
The Sundarbans mangrove forest is well
known for its rich biodiversity and probably has
the maximum flora and fauna as compared to
other mangrove forests of the world. Prain (1903)
reported 334 plant species in the Sundarbans and
surrounding areas. It is a matter of concern that
there is a loss of biodiversity in the Sundarbans
mangrove forest. Sattar and Faizuddin (1998)
reported that one species of Briiguiera, that is
B. parviflora, has become extinct, and many other
plant species such as Luninitzera racemose,
Xylocarpus granatum, Aviceunia marina, Rhizophore
mucronate, R. apiculata, Kandelia candel, Excoecerie
indice, Cynometra remiflore and Amoora cuculate are
already threatened. Chaudhuri andNjiithani(1985)
did not mention the presence of B. parviflora in the
Indian part of Sundarbans but noted its presence
in the Andamans mangrove forests. It used to be
found associated with other mangrove species in
the Sundarbans on the bank of rivers and creeks
(Naskar and Guha Bakshi 1987). The timber of B.
parviflora is used as fishing pole and firewood. It is
also a fodder plantfor deer and other herbivorous
animals
This paper gives an overview on the initial growth performance ofmahogany
(Swietenia macrophylla King) planted in Chittagong city areas of Bangladesh. A guide
equationwas derived with logarithm to the base e of dominant height as a dependent
variable and reciprocal power of age as an independent variable. The growth
characteristics were estimated by regression techniques based on statistical and
biological criteria. The paper presents the growth statistics ofstand diameter atbreast
height, stand mean height, stand dominant height and basal area per hectare. The
selected models could be used to estimate the growth parameters in the plantations
with 9.0 m to 21.0 m dominant height at the age of 12 years.
To study the impact of vehicular pollution on the road-side
vegetation, four sites in the eastern Uttar Pradesh of India with varying
vehicular density were selected. Index of dominance of five plant species,
Ageratum houstonianum Mill., Argemone mexicana Linn., Rumexdentatus Linn.,
Salvia plebeja R. Br. and Solatium nigrum Linn., were studied atsix intervalstill
250 mperpendicular to the road at all the foursites. An attempthasbeenmade
to correlate the index of dominance of the species with the load of vehicular
pollution. Three species, A. houstonianum, S. plebeja and S. nigrum, showed
positive correlation with respect to the increasing distance from the road,
showing its susceptibility for the pollution whereas A mexicana and
R. dentatus showed positive correlation with the increase in pollution load.
However, a comparison between the two species showed that A. mexicana
was a better bio-indicator of vehicular pollution.
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