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highest abundance of pupae was observed during higher rate.However satisfactory result was
September and October. observed in both cases when field dose of Furadan
was applied practically.In this case,
134 ISLAM, A.B.M.W. (Dept. of Botany, heterotrophically grown cultures were more
Govt. B.L. College, Daulatpur, Khulna); tolerant to pesticides with respect to growth and
MANIRA, M.S. (Refrigeration & nitrogen fixation.
Airconditioning, Satkhira Polytechnique Institute,
Satkhira, Khulna); Rahman, M.M. 136 JAHANGIR, A.A.; MONDAL, R.K.;
(Environmental Sciance Discipline, Khulna NADA, K.; AFROZE, R.S. & HAKIM,
University, Khulna) & ZAMAN, M. (Dept. of M.A. ( BCSIR Laboratories, Dhaka). Response of
Botany, Rajshahi University, Rajshahi). Blue- Nitrogen and Phosphorus Fertilizer and Plant
Green Algae (BGA) of Two Shrimp Ghers at Spacing on Growth and Yield Contributing
Khulna, Bangladesh. South Asian J. Agric., 2007, 2 Character of Sunflower. Bang. J. Sci. Ind. Res.,
(1 & 2), 123-128. 2006, 41 (1 & 2), 33-40.
BGA of two Ghers has been studied monthly The plant spacing of 20, 25 and 30 cm were
round the year. In Gher-I 11 genera of used for the study. The doses of nitrogen and
cyanophytes, was recorded by Oscillatoria, phosphorus were 80, 100, 120 and 45, 60, 75
Anabaena, Nostoc, Aphanocapsa, Microcystis phormidium kg/hectare respectively. The experiment was
Merismopedia, Lynbya, Gleothee, Gloeocapsa and carried out in a randomized block design with
Spirulina.In Gher-2 The 8 genera of cyanoobytes three replications 20 cm plant spacing
was identified which were Oscillatoria, Anabaena, produced the highest plot yield. Maximum
Aphanocapsa,Glococapsa, Lynbya, Merismopedia, number of seeds per head and yield were
Microcystis and Phormidium. produced by the application of 120 kg N +75
kg p 2O 5 per hectare. In case of plant spacing x
135 ISLAM, M.Z. (ITDG); BEGUM, S. fertilizer interaction effect, 20 cm plant
(Environmental Science Discipline, Khulna spacing with 120 kg N + 75 kg P 2O 5 per
University, Khulna); ARA, H. (FMRT Discipline, hectare treatment produced the highest head
Khulna University, Khulna) & WALIULLAH, diameter and seed yield.
T.M. (Institute of Biological Sciences, Rajshahi
University, Rajshahi). EFFECT OF FURADAN 137 KHATUN, R.; NOOR, P.; AKHTER,
ON THE GROWTH AND NITROGEN N.; JAHAN, M.A.A.; HOSSAIN, M. &
FIXATION BY BLUE GREEN ALGAE. J. Bio- MUNSHI, J.L. (Biological Research Division,
Sci., 2007, 15, 23-34. BCSIR Laboratories, Dhaka). Spirulina Culture in
Bangladesh XI Selection of a Culture Medium,
The study was carried out to determine the effects Suitable for Culturing a Local Strain of Spirulina.
of pesticide on the growth and nitrogen fixation by Bang. J. Sci. Ind. Res., 2006, 41 (3&4), 227-234.
blue green algae (BGA) that isolated from three
different soils of Bangladesh viz., saline soil, Large scale Spirulina culture is possible in
calcareous soil and red soil. Furadan 5G, one of the Bangladesh inspite of unpredictable climatic
most commonly used pesticides was selected for condition. Effect of different culture media on the
the study of eighteen taxa of blue green algae growth of a local strain of Spirulina (Spirulina
(BGA) which brought under the unialgal culture in platensis) was studied. Bangladesh medium (Bd,)
the selected soil types. Variations observed in was found to be more favourable for the growth of
growth and nitrogen fixation among the isolates of the alga. All together three culture media were
a particular type of soil. The culture resulted as included in this study.
BGA grow slow under heterotrophically grown
cultures than that of autotrophically grown 138 PAUL, N.K. (Dept. of Botany, Rajshahi
cultures. On the other hand, nitrogen fixation in University, Rajshahi). Growth and leaf yield of
heterotrophically grown cultures was observed at
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