Comparison of Soil Phosphorus Tests for Assessing Plant Availability of Phosphorus in an Ultisol Amended with Water-Soluble and Phosphate Rock Sources
This work reports on soil phosphorus (P) test calibrations in triple superphosphate (TSP)– and phosphate rock (PR)–fertilized soils for cost-effective fertilizer recommendations. Results showed that separate calibrations are required for TSP and PR fertilizers for conventional soil tests. Use of cri...
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| Format: | Article |
| Language: | English English |
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2010
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| Online Access: | http://psasir.upm.edu.my/id/eprint/11708/ http://psasir.upm.edu.my/id/eprint/11708/1/Comparison%20of%20Soil%20Phosphorus%20Tests%20for%20Assessing%20Plant%20Availability%20of%20Phosphorus%20in%20an%20Ultisol%20Amended%20with%20Water.pdf |
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| author | Gikonyo, Esther Wakiuru Abdul Rahman, Zaharah Musa, Mohamed Hanafi Abd Rahim, Anuar |
| author_facet | Gikonyo, Esther Wakiuru Abdul Rahman, Zaharah Musa, Mohamed Hanafi Abd Rahim, Anuar |
| author_sort | Gikonyo, Esther Wakiuru |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | This work reports on soil phosphorus (P) test calibrations in triple superphosphate (TSP)– and phosphate rock (PR)–fertilized soils for cost-effective fertilizer recommendations. Results showed that separate calibrations are required for TSP and PR fertilizers for conventional soil tests. Use of critical P levels (CPLs) established for TSP in PR recommendations leads to erroneous application of PR while it incurs unnecessary application costs. The iron oxide–impregnated paper was insensitive to P sources and would be the most appropriate soil test in integrated nutrient systems |
| first_indexed | 2025-11-15T07:46:43Z |
| format | Article |
| id | upm-11708 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T07:46:43Z |
| publishDate | 2010 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-117082015-11-27T03:17:00Z http://psasir.upm.edu.my/id/eprint/11708/ Comparison of Soil Phosphorus Tests for Assessing Plant Availability of Phosphorus in an Ultisol Amended with Water-Soluble and Phosphate Rock Sources Gikonyo, Esther Wakiuru Abdul Rahman, Zaharah Musa, Mohamed Hanafi Abd Rahim, Anuar This work reports on soil phosphorus (P) test calibrations in triple superphosphate (TSP)– and phosphate rock (PR)–fertilized soils for cost-effective fertilizer recommendations. Results showed that separate calibrations are required for TSP and PR fertilizers for conventional soil tests. Use of critical P levels (CPLs) established for TSP in PR recommendations leads to erroneous application of PR while it incurs unnecessary application costs. The iron oxide–impregnated paper was insensitive to P sources and would be the most appropriate soil test in integrated nutrient systems 2010 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/11708/1/Comparison%20of%20Soil%20Phosphorus%20Tests%20for%20Assessing%20Plant%20Availability%20of%20Phosphorus%20in%20an%20Ultisol%20Amended%20with%20Water.pdf Gikonyo, Esther Wakiuru and Abdul Rahman, Zaharah and Musa, Mohamed Hanafi and Abd Rahim, Anuar (2010) Comparison of Soil Phosphorus Tests for Assessing Plant Availability of Phosphorus in an Ultisol Amended with Water-Soluble and Phosphate Rock Sources. The Scientific World Journal, 10. pp. 1679-1693. ISSN 1537-744X 10.1100/tsw.2010.174 English |
| spellingShingle | Gikonyo, Esther Wakiuru Abdul Rahman, Zaharah Musa, Mohamed Hanafi Abd Rahim, Anuar Comparison of Soil Phosphorus Tests for Assessing Plant Availability of Phosphorus in an Ultisol Amended with Water-Soluble and Phosphate Rock Sources |
| title | Comparison of Soil Phosphorus Tests for Assessing Plant Availability of Phosphorus in an Ultisol Amended with Water-Soluble and Phosphate Rock Sources |
| title_full | Comparison of Soil Phosphorus Tests for Assessing Plant Availability of Phosphorus in an Ultisol Amended with Water-Soluble and Phosphate Rock Sources |
| title_fullStr | Comparison of Soil Phosphorus Tests for Assessing Plant Availability of Phosphorus in an Ultisol Amended with Water-Soluble and Phosphate Rock Sources |
| title_full_unstemmed | Comparison of Soil Phosphorus Tests for Assessing Plant Availability of Phosphorus in an Ultisol Amended with Water-Soluble and Phosphate Rock Sources |
| title_short | Comparison of Soil Phosphorus Tests for Assessing Plant Availability of Phosphorus in an Ultisol Amended with Water-Soluble and Phosphate Rock Sources |
| title_sort | comparison of soil phosphorus tests for assessing plant availability of phosphorus in an ultisol amended with water-soluble and phosphate rock sources |
| url | http://psasir.upm.edu.my/id/eprint/11708/ http://psasir.upm.edu.my/id/eprint/11708/ http://psasir.upm.edu.my/id/eprint/11708/1/Comparison%20of%20Soil%20Phosphorus%20Tests%20for%20Assessing%20Plant%20Availability%20of%20Phosphorus%20in%20an%20Ultisol%20Amended%20with%20Water.pdf |