Page 115 - PARVEEN, S

during the months of March to July in the year of Spore Population in Chickpea. Bang. J. Microbiol.,
2005-2007. The objectives were to evaluate the
response of tuberose to B and Zn micronutrients
and to find out the optimum dose of Boron and
Zinc for maximizing flower yield and quality of
tuberose. Sixteen treatments comprising four levels
1
of B (0, 1, 2 and 3 kg ha¯ ) and four levels of Zn
1
(0, 1.5, 3.5 and 4.5 kg ha¯ ) along with blanket
dose of N 300P 90K 170S 20 kg/ha and cow dung 5 t/ha
were used in the trial. Tuberose (CV. double) was
taken as a test crop. It was revealed that B and Zn
and their combination had a profound effect on
flower characters and flower yield of Tuberose. It
was also evident that Boron-Zinc integration was
appeared to be more responsive than their single
applications. All the studied parameters like plant
height, effective leaves, length of rachis and spike,
number of florets and flower size and weight of
stick were greatly influenced with the added higher
doses of boron-zinc combination but subsequent
augmentation of B and Zn suppressed the flower
production. However, the longest mean spike
length (93.50 cm and 89.96 cm), maximum
number of florets (49.13 and 54.18/spike) and the
highest stick yield (114 g and 123.8 g) were
recorded with combined application of B 20 Zn 30 kg
1
ha¯ α and 126% increased flower stick yield was
found to be contributed by said treatment
1
combination T 11 ((B 20Zn 30 kg ha¯ ) which was
significantly more higher over all other treatment
combination. Similar result trend was also noticed
in single application of B and Zn but their effect
was not distinctly pronounced.
347 KHANAM, D. (Soil Science Division,
Bangladesh Agricultural University, Mymensingh);
MRIDHA, M.A.U. (Dept. of Botany, Chittagong
University, Chittagong) & SOLAIMAN, A.R.M.
(Dept. of Soil Science, Bangabandhu Sheikh Mujibur
Rahman Agricultural University (BSMRAU), Salna,
Gazipur). Effect of Dual Inoculation of Arbuscular
Mycorrhiza and Rhizobium on Root Colonization and
108
2005, 22 (1), 15-18.
A pot experiment was conducted to study the effect
of different combinations of arbuscular
mycorrhizae (AM), Rhizobium (R), nitrogen (N)
and phosphorus (P) on root colonization in
chickpea and spore population in the rhizosphere
soil. The experiment was designed in complete
randomised design (CRD) with 14 treatments
replicated 5 times. The treatment R+AM+N
recorded the highest percent root colonization in
three growth stages of chickpea, Arbuscular
mycorrhizal inoculation, either individually or in
combination with Rhizobium or dual inoculation
along with N and P fertilizers significantly
increased spore population over control in all
growth stages of chickpea. Dual inoculation was
found to be superior to individual inoculation.
Higher percent root colonization and spore
population was observed at 50% flowering stage
compared to other two stages. Glomus and
Acaulospora were found abundantly compared to
other genera in the rhizosphere soil of chickpea.
348 KHAN, M.A.I.; HUDA, M.E. (Dept. of
Environmental Sciences, Jahangirnagar University,
Savar, Dhaka); HOSSAIN, A.M.M.M.; ELAHI,
S.F. (Dept. of Soil, Water and Environment, Dhaka
University, Dhaka) & ISLAM, M.S. (Analytical
Research Division, BCSIR, Dhaka). Physico-
Chemical and Biological Aspects of Monsoon
Waters of Ashulia for Economic and Aesthetic
Applications: Preliminary Studies. Bang. J. Sci.
Ind. Res., 2007, 42 (4), 377-396.
In the north-eastern part of Dhaka the Turag River'
extends over Ashulia thana with a few branches.
The north-eastern part of Ashulia thana mainly
constitute low lands with a physiography of
Madhupur Tract interlaced with Brahmaputra
Floodplain. Monsoon extends over these lands