Physical and chemical characteristics of controlled release compound fertiliser
Fertility management of soil is greatly improved by supplying nutrients according to the physiological needs of plants. Controlled release (CR) compound fertiliser is expected to give all major nutrients to plants. The compound fertiliser (15% N, 2% P, 16% K, 4% Ca, 1% Mg, and 0.1% Cu) was prepared...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2000
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| Online Access: | http://psasir.upm.edu.my/id/eprint/111949/ http://psasir.upm.edu.my/id/eprint/111949/3/111949.pdf |
| _version_ | 1848865820062515200 |
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| author | Hanafi, M.M Eltaib, S.M Ahmad, M.B |
| author_facet | Hanafi, M.M Eltaib, S.M Ahmad, M.B |
| author_sort | Hanafi, M.M |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Fertility management of soil is greatly improved by supplying nutrients according to the physiological needs of plants. Controlled release (CR) compound fertiliser is expected to give all major nutrients to plants. The compound fertiliser (15% N, 2% P, 16% K, 4% Ca, 1% Mg, and 0.1% Cu) was prepared in the laboratory using a granulation machine and was coated using polyvinyl chloride (PVC), polyacrylamide (PA), natural rubber (NR), and polylactic acid (PLA). The coated compound fertilisers were characterised using Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), thermogravimetric (TGA) and differential thermogravimetric (DTG) analyses, and scanning electron microscopy (SEM). Similar number of peaks were observed in the DSC as in TGA and DTG for the coated compound fertilisers. With the exception of PVC (four peaks, including one exothermic peak), all coated compound fertilisers exhibited three broad endothermic peak. Thermal-oxidative stability, as determined at 300°C, decreased in the order: NR>PLA>PVC>PA. In contrast, the thickness of the coating layer on the compound fertiliser granules, determined by SEM, gave PVC compound coated fertiliser the highest value of 3.04 μm, and the lowest was obtained by PA (2.04 μm). Variation in the characteristics of the polymers would be utilised in producing CR compound fertiliser that fit the requirements of growing plants. |
| first_indexed | 2025-11-15T14:10:47Z |
| format | Article |
| id | upm-111949 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T14:10:47Z |
| publishDate | 2000 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1119492025-03-11T06:35:41Z http://psasir.upm.edu.my/id/eprint/111949/ Physical and chemical characteristics of controlled release compound fertiliser Hanafi, M.M Eltaib, S.M Ahmad, M.B Fertility management of soil is greatly improved by supplying nutrients according to the physiological needs of plants. Controlled release (CR) compound fertiliser is expected to give all major nutrients to plants. The compound fertiliser (15% N, 2% P, 16% K, 4% Ca, 1% Mg, and 0.1% Cu) was prepared in the laboratory using a granulation machine and was coated using polyvinyl chloride (PVC), polyacrylamide (PA), natural rubber (NR), and polylactic acid (PLA). The coated compound fertilisers were characterised using Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), thermogravimetric (TGA) and differential thermogravimetric (DTG) analyses, and scanning electron microscopy (SEM). Similar number of peaks were observed in the DSC as in TGA and DTG for the coated compound fertilisers. With the exception of PVC (four peaks, including one exothermic peak), all coated compound fertilisers exhibited three broad endothermic peak. Thermal-oxidative stability, as determined at 300°C, decreased in the order: NR>PLA>PVC>PA. In contrast, the thickness of the coating layer on the compound fertiliser granules, determined by SEM, gave PVC compound coated fertiliser the highest value of 3.04 μm, and the lowest was obtained by PA (2.04 μm). Variation in the characteristics of the polymers would be utilised in producing CR compound fertiliser that fit the requirements of growing plants. Elsevier 2000 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/111949/3/111949.pdf Hanafi, M.M and Eltaib, S.M and Ahmad, M.B (2000) Physical and chemical characteristics of controlled release compound fertiliser. European Polymer Journal, 36 (10). pp. 2081-2088. ISSN 0014-3057; eISSN: 1873-1945 https://linkinghub.elsevier.com/retrieve/pii/S0014305700000045 10.1016/s0014-3057(00)00004-5 |
| spellingShingle | Hanafi, M.M Eltaib, S.M Ahmad, M.B Physical and chemical characteristics of controlled release compound fertiliser |
| title | Physical and chemical characteristics of controlled release compound fertiliser |
| title_full | Physical and chemical characteristics of controlled release compound fertiliser |
| title_fullStr | Physical and chemical characteristics of controlled release compound fertiliser |
| title_full_unstemmed | Physical and chemical characteristics of controlled release compound fertiliser |
| title_short | Physical and chemical characteristics of controlled release compound fertiliser |
| title_sort | physical and chemical characteristics of controlled release compound fertiliser |
| url | http://psasir.upm.edu.my/id/eprint/111949/ http://psasir.upm.edu.my/id/eprint/111949/ http://psasir.upm.edu.my/id/eprint/111949/ http://psasir.upm.edu.my/id/eprint/111949/3/111949.pdf |