STUDY TilE RELEASE Of NITROGEN FROM COATED UREA GRANULE: MODELLING AND EXPERIMENTAL VALIDATION
Urea. when applied to crops is vulnerable to losses from volatilization and leaching. Controlled-release fertilizer (CRF) enhances nitrogen use efficiency by plants which not only increases the crop yields but also contributes towards environmental pollution control in terms of the alleviation of...
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| Format: | Thesis |
| Language: | English |
| Published: |
2016
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| Subjects: | |
| Online Access: | http://utpedia.utp.edu.my/21906/1/2016%20-CHEMICAL%20-%20STUDY%20THE%20RELEASE%20OF%20NITROGEN%20FROM%20COATED%20UREA%20GRANULE%3B%20MODELLING%20%26%20EXPERIMENTAL%20VALIDATION%20-%20TRINH%20HOAI%20THANH.pdf http://utpedia.utp.edu.my/21906/ |
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| Summary: | Urea. when applied to crops is vulnerable to losses from volatilization and
leaching. Controlled-release fertilizer (CRF) enhances nitrogen use efficiency by
plants which not only increases the crop yields but also contributes towards
environmental pollution control in terms of the alleviation of hazardous gaseous
emissions and water eutrophication. This study thoroughly investigates the release of
nitrogen from CRF both in modeling and experimental aspects. The experiments are
conducted to provide useful information for the model and validation process.
Modelling section includes several models f()f each stage of the release including lag
period. constant release. and decay release stages. Firstly. this study proposes a multi
diflusion model that simulates nitrogen release from coated urea particles for both the
constant and decay release stages of urea. |
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