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
Lizard diversity in the Chittagong University Campus (CUC) was studied from August 2012 to
December 2014. Seventeen species belonging to four families (Agamidae, Gekkonidae, Scincidae and
Varanidae) and eight genera {Calotes, Gekko, Hemidactylus, Eutropis, Lygosoma, Scincella,
Sphenomorphus and Varanus) under the Order Squamata were recorded. Family Scincidae comprised the
highest number of species (7 i.e., 41.18%) and Agamidae was the lowest (2 i.e., 11.76%). Status,
distribution and habitat of the lizards in the CUC have been discussed
Five Trichoderma strains such as T. virens IMI-392430, T. pseudokoningii IMI-392431, T.
harzianum IMI-392432, T. harzianum IMI-392433, T. harzianum IMI-392434 were tested for efficacy to
inhibit and overgrowth of mycelia of Fusarium solani, a causal agent of root rot of Ashwagandha on
potato dextrose agar (PDA) medium. Duel culture technique showed that all Trichoderma strains
effectively inhibited and overgrew mycelia of the pathogen, especially T. harzianum IMI-392432
providing the highest percent of inhibition of radial growth (PIRG) (69.32 %) and overgrowth mycelia
(59.28 %). Liquid culture filtrates having 75% concentration extracted from 30-day-old T. harzianum
IMI-392432 showed the highest percent inhibition of mycelia growth (PIMG) value of 76.23% by using
normal poison agar technique. Further, highest percent inhibition of conidial germination (PICG) (82.86
%) of the pathogen was exhibited by T. harzianum IMI-392432 at same culture and concentrations. In this
study it was observed that different Trichoderma strains have good antagonistic effect on Mycelial growth
and conidial germination of F. solani. In each case, T. harzianum IMI-392432 performed the best
bio-control agent against A solani causing root rot disease of Ashwagandha
Agar defoliator, Heortia vitessoides Moore (Crambidae:Lepidoptera) is a major defoliator of agar
tree (Aquilaria malaccensis Lamk.) in Bangladesh. The larva of this pest causes partial or complete
defoliation affecting the growth of the plant seriously. The pest has five to six overlapping generations in
a year. The peak infestation occurred during May-June. The mean percentage of trees infested ranged
from 48-72 %. The intensity of attack was more in the trees grown in the open than under shade.
Chemical pesticides Malathion 57 EC (malathion), Ripcord 10 EC (cypermethrin) and botanical pesticide
Neem oil were applied to control the pest both in the laboratory and field conditions. Among these,
Malathion 57 EC showed best performance followed by Ripcord 10 EC and Neem oil respectively.
The strength and seasoning properties of timber species, Swietenia macrophylla King were studied. 5.
macrophylla is found moderately strong. The volumetric shrinkage is higher and the specific gravity is
lower than that of Chittagong teak which was recommended as standard for comparison of other timber
species of Bangladesh. The species can be seasoned properly in the solar kiln and in air-drying yard. The
species is found suitable for making furniture and other household articles as far as Seasoning and strength
properties are concerned
Pongamia pinnata (L.) Pierre is a fast
growing medium-sized, nearly evergreen tree
species. It attains a height up to 25m, with straight
or crooked trunk up to 50 cm diameter (Allen and
Allen 1981). The crown is broad, spreading or
dropping branches with dense foliage. The species
is found in humid and sub-tropical environments.
It occurs naturally in lowland, near canals, rivers,
waste places, along the edges of mangrove forest
and tidal streams. In Bangladesh, it usually grows
on the sandy mud in the coastal districts and in the
fresh water swamp forests of the north-eastern
wetlands
A study was carried out on the herpetofauna of the Baraiyadhala National Park in Chittagong,
Bangladesh by direct field observations during August 2012 to July 2013. In total, 38 species of
herpetofauna belonging to 3 orders (Anura, Testudines and Squamata), 16 families and 32 genera were
recorded. Out of the 38 species, 10 (26.32%) were amphibians and 28 (73.68%) reptiles. Among the
reptiles, 2 (7.14%) species were turtles, 12 (42.86%) lizards and 14 (50%) snakes while all but one (Asian
Common Toad, Duttaphrynus melanostictus) amphibians were frogs. Among the amphibians, Cricket
Frog (Fejervarya sp.) constituted the highest density and Bengal Leaping Frog (Hylarana tytleri)
accounted for the lowest. The density of South Asian Giant Gecko (Gekko gecko) was the highest and
Indian Rock Python (Python bivittatus), Gray Cat Snake (Boiga siamensis) and Banded Krait (Bungarus
fasciatus) were the lowest among reptiles. Local status (relative abundance) of herpetofauna were
assessed where 15 (39.47%) species were rare, 11 (28.95%) fairly common, 9 (23.68%) common and 3
(7.9%) were very common. Of the recorded species, 15 (39.47%; 2 amphibians and 13 reptiles) were
threatened including 2 Critically Endangered (CE), 6 Endangered (EN) and 7 Vulnerable (VU).
Seven plant extracts and seven fungicides were tested to centre! the wilting disease of
Dnlhetjfrt sisstJf’ caused by Ftiwrtitrji srifafti f. Plant extracts of Viir.i
(Nishinda), AijJif/rtk’Wii inditB (Neem), (Vijiijujt tas/hcimi (Tulsi), Tagdei patuia (Gandha),
ftyrfftpiper (Bishkantali), AihrrMfl vasicfi (Basok) and Grutelfo ii-dfej (Thankuni) were
tested tn 100%, 50:. and 25:T conienFrdlion in Cnntroiling the vegetative growth of the fungus.
Basilieum inhibited the highest amount, about 56% growth of the culture. A. vasicn and I7,
jEgHndo wen? the second and third in controlling about 43% and about 42% of the vegetative
growth. C. asiotica controlled 40% while A. mdicn and T. jwtrda controied 39% and 37%. P.
In/drvpifi’r was the least effective antifungal that inhibited about 32% growth of the tested
fungus.
The composition and diversity of native tree species in all topographical positions
of Dud-Pukuria Natural Forest in Chittagong (South) Forest Division, Bangladesh were
investigated. A total of 667 individual stems having dbh >10 cm were recorded from 3.2
hectare sampled area. These 77 native tree species belongs to 32 family and 53 genera
The composition and diversity of native tree species of Moulvibazar natural forests of
Sylhet Forest Division were investigated. A total of 1,051 individual stems having dbh of & 5cm
were recorded from 1.44 ha sampled area. These comprise 81 native bee species belonging to
59 genera under 33 families. Moraceae and Euphorbiaceae dominated in the Study area
containing 9 and 8 species respectively followed by Rubiaceae (7), Myrtaceae and Vefbenaceae
(6 species each). Average species diversity was 3.4L) and ranged from 3.21-3.61 in the studyarea. Species similarity index was highest (69.72%) between Lawachara and Adampur followed
by Adampur and Gubindapur (65-4%) and lowest (62.7″i>) between Lawachata and Gi’bindpur.
Tree density was found 573 stems ha’1 in Lawachara, 860 stem ha J in Adampur (Kalengi) and
756 stems ha”1 in Gobindapur. Artoccrptts eftawa showed the highest (32,63 m2) basal area rn
Lawadiara followed by Liigerstrarraiir ptiroi/tara (6.98 tn2) and Cliiikrirsir wfiittW (5.74 m2), but in
Adampur maximum basal area showed by fyzygitiNrJinwiV (2.39 in2) followed by Artorpirs
c/jfijrju (2,04 m2), CasfaiJcpsrs tribidordea (1.24 m2), while in Gobindapur, meximam basal area
recorded for ftotrnirpre; vnnnwit (1.31m2) followed by Atia.’fltpits dtaitm (1.(34 m2) and l/tiex
ptfesrrns (0.82 m2). Highest Importance Value Index (TV!) in Lawadiara natural forests was
86.92 for Arhymprrx ttaw followed by I ngeralnriuin ptinriflwa (29.53), Chukraiia ivlutina fl5-11},
but in Adampur Sy^iunj firmum attains the highest IVI (39.92) followed by Casfimppsts
fribdoitfcs (17.62), Artomrpns dmjjir (17.46), Lagerstroemia pantiflom (15.62) and Efa’ocnrpws
rrjrjrjjir (15.41), while, in Gobirtdapur, the highest IVI was recorded for FforciTtfpjis uantmtf
(22.32) followed by Vita pubescetts (15.06) and Si/zygititti[omasum (14,71
Rajkoroi (Albizia richardiana King and Prain) is an important tree species
extensively planted as fuel wood and timber in home garden and road sides as avenue
tree in the southern part of Bangladesh. Volume table of this rajkoroi species has been
prepared by deriving volume equations. 15 selected model were tested for deriving
volume equation by regression technique. Among them the logarithmic model log(V)=
a + b log (G) for one way and log (V) = a + b log (G) + c log(H) for two way analysis
appeared to be the best model for estimating the rajkoroi tree volume. Estimated
volume table is applicable for any size of rajkoroi tree planted of the southern part of
Bangladesh.
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.
