Recovery of Field-Applied Fertilizer Nitrogen by Rice
Field estimation of the recovery of fertilizer N applied to rice COryza sativa L.) was carried out as an appraisal of the prevailing fertilizer management practice. The study was carried out on a farmers field for two growing seasons. Soil samples at three depths, 0-15 cm, 15-30 cm and 30-45 cm an...
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| Format: | Article |
| Language: | English English |
| Published: |
1988
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| Online Access: | http://psasir.upm.edu.my/id/eprint/2679/ http://psasir.upm.edu.my/id/eprint/2679/1/Recovery_of_Field-Applied_Fertilizer.pdf |
| _version_ | 1848839314672189440 |
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| author | Yusop, Mohd Khanif |
| author_facet | Yusop, Mohd Khanif |
| author_sort | Yusop, Mohd Khanif |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Field estimation of the recovery of fertilizer N applied to rice COryza sativa L.) was carried out as
an appraisal of the prevailing fertilizer management practice. The study was carried out on a farmers field
for two growing seasons. Soil samples at three depths, 0-15 cm, 15-30 cm and 30-45 cm and water
samples were collected every two weeks during the growing season. The plant recovery of fertilizer N was
estimated by the difference between the N treated plots and the controls. Although this method could
overestimate the fertilizer N recovery due to priming effect, under the conditions in the study the effect
was assumed to be minimal. An increase in ammonium N content in the soil was not observed even immediately
after N application. The removal of fertilizer N from the soil through either plant uptake or loss
processes was very rapid. Higher ammonium N was only detected in the water samples early in the growing
season but not at the mid-season after the second N application. The recovery of fertilizer N in the
plant were 36% and 30% during the main and off-seasons respectively. Most of the N was in the grain.
About 69 kg of the 95 kg of the total N removed by the crops per hectare was derived from the soil.
More than 64% of the fertilizer N applied was either lost or immobilized in the soil. |
| first_indexed | 2025-11-15T07:09:29Z |
| format | Article |
| id | upm-2679 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T07:09:29Z |
| publishDate | 1988 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-26792013-05-27T07:02:43Z http://psasir.upm.edu.my/id/eprint/2679/ Recovery of Field-Applied Fertilizer Nitrogen by Rice Yusop, Mohd Khanif Field estimation of the recovery of fertilizer N applied to rice COryza sativa L.) was carried out as an appraisal of the prevailing fertilizer management practice. The study was carried out on a farmers field for two growing seasons. Soil samples at three depths, 0-15 cm, 15-30 cm and 30-45 cm and water samples were collected every two weeks during the growing season. The plant recovery of fertilizer N was estimated by the difference between the N treated plots and the controls. Although this method could overestimate the fertilizer N recovery due to priming effect, under the conditions in the study the effect was assumed to be minimal. An increase in ammonium N content in the soil was not observed even immediately after N application. The removal of fertilizer N from the soil through either plant uptake or loss processes was very rapid. Higher ammonium N was only detected in the water samples early in the growing season but not at the mid-season after the second N application. The recovery of fertilizer N in the plant were 36% and 30% during the main and off-seasons respectively. Most of the N was in the grain. About 69 kg of the 95 kg of the total N removed by the crops per hectare was derived from the soil. More than 64% of the fertilizer N applied was either lost or immobilized in the soil. 1988 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/2679/1/Recovery_of_Field-Applied_Fertilizer.pdf Yusop, Mohd Khanif (1988) Recovery of Field-Applied Fertilizer Nitrogen by Rice. Pertanika, 11 (1). pp. 25-30. English |
| spellingShingle | Yusop, Mohd Khanif Recovery of Field-Applied Fertilizer Nitrogen by Rice |
| title | Recovery of Field-Applied Fertilizer
Nitrogen by Rice |
| title_full | Recovery of Field-Applied Fertilizer
Nitrogen by Rice |
| title_fullStr | Recovery of Field-Applied Fertilizer
Nitrogen by Rice |
| title_full_unstemmed | Recovery of Field-Applied Fertilizer
Nitrogen by Rice |
| title_short | Recovery of Field-Applied Fertilizer
Nitrogen by Rice |
| title_sort | recovery of field-applied fertilizer
nitrogen by rice |
| url | http://psasir.upm.edu.my/id/eprint/2679/ http://psasir.upm.edu.my/id/eprint/2679/1/Recovery_of_Field-Applied_Fertilizer.pdf |