Practical Application of Azolla for Rice Production -

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Sommaire:
1. Azolla-Anabaena symbiosis: Basic Biology, Use and Prospects for the future.- First Section: Basic Studies.- 2. Formation and breakdown of Azolla polypeptides in paddy soils.- 3. Determining N2 fixation and N input in Azolla grown with and without combined nitrogen sources: keeping the acetylene reduction assay in the proper perspective.- 4. Recent advances on Azolla research.- 5. Sporocarp germination, cytology and mineral nutrition of Azolla species.- 6. Azolla pinnata var. africana. Background, ecophysiology, plots assays.- 7. A scanning electron microscopic view of sporulation in Azolla mexicana Presl.- 8. Planning Azolla research for the 1980's.- Second Section: Applied Studies.- 9. Azolla, a water saver in irrigated rice fields?.- 10. Azolla - A potential biofertilizer for rice production.- 11. Comparative study of six species of Azolla in relation to their utilization as green manure for rice.- 12. Azolla bio-fertilization to increase rice production with emphasis on dual cropping.- 13. Manuring of rice crop with Azolla.- 14. Phosphorus removal by Azolla caroliniana cultured in nutrient enriched waters.- 15. Utilization of radioactive phosphorus (32P) by Azolla-Anabaena and its transfer to rice plants.- 16. A study of the availability of biologically fixed atmospheric dinitrogen by Azolla-Anabaena complesx to the flooded rice crops.- Third Section: Country Studies.- 17. Azolla for rice production in Thailand.- 18. Azolla as a biofertilizer for rice in Sri Lanka.- 19. Azolla in West Africa: First results from the WARDA Program.- Fourth Section: Abstracts.- 20. Response of rice to nitrogen fertilization in Puerto Rico.- 21. Research on the mass culture of Azolla caroliniana and A. filiculoides in Italy.- 22. Practical utility of Azolla in Samba season inThanjavur Delta.- 23. Azolla for rice production in tropical Africa.- 24. Evaluation of the Azolla-Anabaena association effect on the dry matter production and total N of Setaria sphacelata cv. Kazungula.- 25. Phosphorus nutrition in Azolla.- Fifth Section: Round Table.- 26. Conclusions.- List of participants.- Author index.- Key words index.