Fertility build-up of rice field soils by blue-green algae

1965 ◽  
Vol 62 (6) ◽  
pp. 252-272
Author(s):  
R. Subrahmanyan ◽  
L. L. Relwani ◽  
G. B. Manna
Keyword(s):  
Green Algae ◽  
Rice Field ◽  
Blue Green Algae ◽  
Field Soils

scholarly journals Distribution of blue-green algae in soils of Chittagong University campus and their nitrogen fixing capacity

1970 ◽  
Vol 37 (1) ◽  
pp. 49-53
Author(s):  
MA Gafur ◽  
Soltana Parvin
Keyword(s):  
Nitrogen Fixation ◽  
Green Algae ◽  
Rice Field ◽  
Maximum Amount ◽  
University Campus ◽  
Nitrogen Fixing ◽  
Batch Cultures ◽  
Blue Green Algae ◽  
Field Soils ◽  
Potential Maximum

Occurrence of blue-green algae in plain land, pond side, hilly area and dry rice field soils of Chittagong University Campus and N2 fixation of some of them have been studied. Twenty four species under 20 genera were identified and their number varied from 0.11×104/g to 2.8×104/g soil. Anabaena oryzae, Calothrix sp., Cylindrospermum majus and Hapalosiphon hibernicus and Nostoc spongiaeforme were selected for their nitrogen fixing potential. Maximum amount of total nitrogen was recorded in Nostoc spongiaeforme followed by Hapalosiphon hibernicus, Cylindrospermum majus, Anabaena oryzae and Calothrix sp. after 30 days growth in batch cultures.   Key words: BGA, Distribution, Nitrogen fixation doi:10.3329/bjb.v37i1.1563 Bangladesh J. Bot. 37(1): 49-53, 2008 (June)

A study of the blue-green algae from paddy field soils of India

Hydrobiologia ◽  
1972 ◽  
Vol 39 (3) ◽  
pp. 335-350 ◽  
Author(s):  
G. L. Tiwari
Keyword(s):  
Green Algae ◽  
Paddy Field ◽  
Blue Green Algae ◽  
Field Soils

A Comparison of the Use of Azolla and Blue-green Algal Bio-fertilizers with Green Manuring, Organic Manuring and Urea in Transplanted and Direct-seeded Rice

1989 ◽  
Vol 25 (4) ◽  
pp. 485-491 ◽  
Author(s):  
A. L. Singh ◽  
P. K. Singh
Keyword(s):  
Green Algae ◽  
Nitrogen Uptake ◽  
Rice Field ◽  
Nitrogen Sources ◽  
Poor Response ◽  
Rice Crop ◽  
Green Manuring ◽  
Blue Green Algae ◽  
Green Algal ◽  
Direct Seeded

SUMMARYAzolla and blue-green algae (BGA) inoculated in a rice field produced a higher biomass and fixed more nitrogen in transplanted than in direct-seeded rice. Application of Azolla, BGA, composts of Eichhomia and Azolla and green manuring with Sesbania increased tiller numbers, height, grain and straw yields, and nitrogen uptake by rice in both the transplanted and the direct-seeded crop. The growing and incorporating of three Azolla crops with the rice crop produced more grain than the use of other nitrogen sources but the rice crops showed a poor response to inoculation with BGA. The yield of rice following green manuring with Sesbania or the use of two crops of Azolla after transplanting was similar to that of a crop receiving 60 kg N ha−1 as urea, but smaller yields resulted from the use of composts of Azolla and Eichhornia.

scholarly journals Rice Field Blue-green Algae of Bongaigaon District, Assam

Our Nature ◽  
1970 ◽  
Vol 8 (1) ◽  
pp. 357-359
Author(s):  
A.K. Das ◽  
G.C. Sarma
Keyword(s):  
Green Algae ◽  
Rice Field ◽  
Single Species ◽  
Rice Fields ◽  
Blue Green Algae

The present study deals with the blue-green algae (BGA) from the rice fields of Bongaigaon district, Assam. 23 species of blue-green algae belongs to 12 genera has been enumerated. Maximum species were found under the genus Nostoc (4), Anabaena (4), which is followed by Scytonema (3) Aphanocapsa (2), Aphanothece (2) and Phormedium (2). Single species was represented by the genera Microcystis, Chroococcus, Merismopedia, Oscillatoria, Aulosira and Calothrix.DOI: 10.3126/on.v8i1.4344

scholarly journals Characterization of blue green algae isolated from Egyptian rice field with potential anti-hepatitis C active components

2014 ◽  
Vol 13 (9) ◽  
pp. 1086-1096 ◽  
Author(s):  
A. Amer Ranya ◽  
Abdel Wahab Abeer ◽  
M.F. Fathy Sahar ◽  
M. Salama Osama ◽  
A El Demellawy Maha
Keyword(s):  
Hepatitis C ◽  
Green Algae ◽  
Rice Field ◽  
Active Components ◽  
Blue Green Algae

Fate of blue-green algae in the food web of flooded rice-field ecosystems

1999 ◽  
Vol 29 (2) ◽  
pp. 141-145 ◽  
Author(s):  
S. K. Rakshit ◽  
N. T. Loan ◽  
S. Johnsen
Keyword(s):  
Food Web ◽  
Green Algae ◽  
Rice Field ◽  
Blue Green Algae ◽  
Flooded Rice ◽  
Flooded Rice Field

Freeze-Fracture Replication in the Ultrastructure of Blue-Green Algae

1967 ◽  
Vol 25 ◽  
pp. 74-75
Author(s):  
L. V. Leak
Keyword(s):  
Cell Wall ◽  
Electron Microscope ◽  
Green Algae ◽  
Three Dimensional ◽  
Freeze Fracture ◽  
Electron Microscopic ◽  
Photosynthetic Membranes ◽  
Blue Green Algae ◽  
Cell Biol ◽  
Cellular Components

Electron microscopic observations of freeze-fracture replicas of Anabaena cells obtained by the procedures described by Bullivant and Ames (J. Cell Biol., 1966) indicate that the frozen cells are fractured in many different planes. This fracturing or cleaving along various planes allows one to gain a three dimensional relation of the cellular components as a result of such a manipulation. When replicas that are obtained by the freeze-fracture method are observed in the electron microscope, cross fractures of the cell wall and membranes that comprise the photosynthetic lamellae are apparent as demonstrated in Figures 1 & 2.A large portion of the Anabaena cell is composed of undulating layers of cytoplasm that are bounded by unit membranes that comprise the photosynthetic membranes. The adjoining layers of cytoplasm are closely apposed to each other to form the photosynthetic lamellae. Occassionally the adjacent layers of cytoplasm are separated by an interspace that may vary in widths of up to several 100 mu to form intralamellar vesicles.

Peculiarities of Energetic, Nitrogen, and Phosphorus Metabolism in Blue-Green Algae under the Influence of Humic Acids

2008 ◽  
Vol 44 (6) ◽  
pp. 74-82
Author(s):  
O. V. Sinyuk ◽  
V. V. Grubinko ◽  
P. D. Klochenko ◽  
T. A. Vasilchuk
Keyword(s):  
Green Algae ◽  
Humic Acids ◽  
Phosphorus Metabolism ◽  
Nitrogen And Phosphorus ◽  
Blue Green Algae
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