Biological technology and agricultural policy: an assessment of azolla in Philippine rice production
Concerns about external debt and energy security have motivated several developing countries to develop biological technologies to substitute for petrochemical inputs. This paper examines the economic feasibility of azolla as a source of nitrogen in Philippine rice production. Green manuring with az...
| Autores principales: | , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
1985
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/170455 |
| _version_ | 1855530835594182656 |
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| author | Rosegrant, Mark W. Roumasset, James A. Balisacan, Arsenio, M. |
| author_browse | Balisacan, Arsenio, M. Rosegrant, Mark W. Roumasset, James A. |
| author_facet | Rosegrant, Mark W. Roumasset, James A. Balisacan, Arsenio, M. |
| author_sort | Rosegrant, Mark W. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Concerns about external debt and energy security have motivated several developing countries to develop biological technologies to substitute for petrochemical inputs. This paper examines the economic feasibility of azolla as a source of nitrogen in Philippine rice production. Green manuring with azolla is found not to be cost effective. Substantial savings from intercropping with azolla can be realized only if the cost of nitrogen from azolla is compared with the price of nitrogen from ammonium sulfate, but not if urea is used as the basis of comparison. Farmers would benefit more from liberalization of import controls on urea. Additional research is needed to develop appropriate chemical‐saving systems before investing heavily in extension. |
| format | Journal Article |
| id | CGSpace170455 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1985 |
| publishDateRange | 1985 |
| publishDateSort | 1985 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1704552025-02-19T14:01:37Z Biological technology and agricultural policy: an assessment of azolla in Philippine rice production Rosegrant, Mark W. Roumasset, James A. Balisacan, Arsenio, M. fertilizers rice biotechnology Concerns about external debt and energy security have motivated several developing countries to develop biological technologies to substitute for petrochemical inputs. This paper examines the economic feasibility of azolla as a source of nitrogen in Philippine rice production. Green manuring with azolla is found not to be cost effective. Substantial savings from intercropping with azolla can be realized only if the cost of nitrogen from azolla is compared with the price of nitrogen from ammonium sulfate, but not if urea is used as the basis of comparison. Farmers would benefit more from liberalization of import controls on urea. Additional research is needed to develop appropriate chemical‐saving systems before investing heavily in extension. 1985-11 2025-01-29T12:56:59Z 2025-01-29T12:56:59Z Journal Article https://hdl.handle.net/10568/170455 en Limited Access Wiley Rosegrant, Mark W.; Roumasset, James A.; Balisacan, Arsenio, M. 1985. Biological technology and agricultural policy: an assessment of azolla in Philippine rice production. American Journal of Agricultural Economics 67(4): 726-732. https://doi.org/10.2307/1241811 |
| spellingShingle | fertilizers rice biotechnology Rosegrant, Mark W. Roumasset, James A. Balisacan, Arsenio, M. Biological technology and agricultural policy: an assessment of azolla in Philippine rice production |
| title | Biological technology and agricultural policy: an assessment of azolla in Philippine rice production |
| title_full | Biological technology and agricultural policy: an assessment of azolla in Philippine rice production |
| title_fullStr | Biological technology and agricultural policy: an assessment of azolla in Philippine rice production |
| title_full_unstemmed | Biological technology and agricultural policy: an assessment of azolla in Philippine rice production |
| title_short | Biological technology and agricultural policy: an assessment of azolla in Philippine rice production |
| title_sort | biological technology and agricultural policy an assessment of azolla in philippine rice production |
| topic | fertilizers rice biotechnology |
| url | https://hdl.handle.net/10568/170455 |
| work_keys_str_mv | AT rosegrantmarkw biologicaltechnologyandagriculturalpolicyanassessmentofazollainphilippinericeproduction AT roumassetjamesa biologicaltechnologyandagriculturalpolicyanassessmentofazollainphilippinericeproduction AT balisacanarseniom biologicaltechnologyandagriculturalpolicyanassessmentofazollainphilippinericeproduction |