Thumbnail Image

Blue-green algae for rice production. A manual for its promotion

FAO Soils Bulletin No. 46

Year of publication 1981

Pages 110 p.

Author Venkataraman, G.S.;Land and Water Division

Product type Book (stand-alone)

ISBN 9251011079

Edition 1

Synopsis (short abstract) This manual is designed to give detailed, practical advice on the various methodologies of organic recycling. Blue-green algae form a self-sufficient system which is capable of fixing atmospheric nitrogen in organic forms and which grows upon a free water surface. It is thus ideally suited for propagation in rice fields. The development and use of blue-green algae require special techniques. The manual summarizes the present status of algal biofertilizer technology for rice with practical inform ation for its adoption by agricultural extension personnel and subject matter specialists. If properly extended, the technology holds the promise of providing 25-30 kg N/ha every season to the growing crop. It also holds the promise of generating rural income and employment. The ultimate success of the technology depends not only on creating an awareness but also on building a trained manpower reserve capable of applying the existing knowledge and carrying out further research.

Language English

Also available in:
No results found.

Related items

Showing items related by metadata.

  • Thumbnail Image
    Book (stand-alone)
    China: azolla propagation and small-scale biogas technology. Report on an FAO/UNDP study tour to the People's Republic of China, 21 May - 11 June 1978
    FAO Soils Bulletin 41
    1978
    Also available in:
    No results found.
    The Study Tour was financed by the UNDP and had the following objectives. To gain knowledge and experience in: - The multiplication of Azolla as a source of biological nitrogen, particular attention being paid to propagation of Azolla and its protection form disease, insect damage and adverse climatic conditions. - Harvesting and agricultural use of Azolla. - Contruction of small-scale biogas units. - Management of biogas units and efficient use of the gas by farming communities and of the effluents for improving soil fertility
  • Thumbnail Image
    Book (stand-alone)
    Application of nitrogen-fixing systems in soil improvement and management
    FAO Soils Bulletin No.49
    1982
    Also available in:
    No results found.
    In view of the continuing increase in cost and scarcity of mineral fertilizers resulting from the use of high-cost fossil energy, there is renewed interest in organic recycling and biological nitrogen-fixation to improve soil fertility and productivity. The workshop in Alexandria recommended the further promotion of research, development, application and dissemination of information available on various aspects of biological nitrogen-fixation, including symbiotic systems of rhizobia/legume and Azolla/blue-green algae, and free-living nitrogen-fixing bacteria and blue-green algae. It is hoped that the compilation of various aspects of nitrogen-fixation under one cover in this Bulletin will be of interest and assistance to research workers and extension planners concerned with the further development and refinement of these natural systems for soil improvement and management.
  • Thumbnail Image
    Book (stand-alone)
    Organic materials and soil productivity in the Near East. Papers presented at the FAO/SIDA Workshop on the Use of Organic Materials for Improving Soil Productivity in the Near East. Alexandria (Egypt), 9 Oct 1978
    FAO Soils Bulletin 45
    1982
    Also available in:
    No results found.
    This Bulletin contains the papers and proceedings of the FAO/SIDA Workshop on Organic Materials and Soil Productivity in the Near East. In view of the important complementary effect of organic materials to mineral fertilizers and their role in improving the soil?s physical properties, the Workshop has dealt with a wide variety of items on techniques and uses of the organic materials and wastes including, composting, bio-fertilizers and biogas, the environmental and health aspects, and action g uidelines for follow-up activities in the Near East countries. The purpose of this Workshop was to promote and maintain interest in the use of organic materials for improving soil productivity in the Near East Region and to assist Member Countries in developing action programmes to achieve these goals. The proceedings of the workshop present sound recommendations, the implementation of which would assist in improving the soil productivity, raising crop production levels and producing a bette r quality of life.
Show more

Users also downloaded

Showing related downloaded files

No results found.