FATE OF ADDED NITROGEN IN SOILS
The transformation of added N in some Manitoba soils was studied in the laboratory. Addition of urea-N to acid soils led to accumulation of nitrite ions and some of this nitrogen was chemically dent-rifled. The initial rate of molecular N production was 3.2% of added N02 per day in acid Well wood so...
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The Faculty of Agriculture Obafemi Awolowo University, Ile-Ife, Nigeria.
2020
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| Dostęp online: | https://ija.oauife.edu.ng/index.php/ija/article/view/577 |
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| _version_ | 1810820103117209600 |
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| author | OLU-OBI, A. HEDLIN , R. A. CHO, C. M. |
| author_facet | OLU-OBI, A. HEDLIN , R. A. CHO, C. M. |
| author_sort | OLU-OBI, A. |
| collection | OJS |
| description | The transformation of added N in some Manitoba soils was studied in the laboratory. Addition of urea-N to acid soils led to accumulation of nitrite ions and some of this nitrogen was chemically dent-rifled. The initial rate of molecular N production was 3.2% of added N02 per day in acid Well wood soil and 1.4% for acid Pine Ridge soil. Nitrite ions also accumulated in the calcareous Almasippi soil (pH 7.7) for a short period, but was denitrified. Oxidation of ammonium ions was very slow in the acid soil.
Soil fixation of added N was greater at low than at high soil pH, and soil organic matter fixed approximately 5 to 10 times as much N per unit weight as did clay. Liming the acid soils considerably reduced the amount of added N fixed. |
| format | Online |
| id | oai:ojs2.ija.oauife.edu.ng:article-577 |
| institution | My University |
| language | eng |
| publishDate | 2020 |
| publisher | The Faculty of Agriculture Obafemi Awolowo University, Ile-Ife, Nigeria. |
| record_format | ojs |
| spelling | oai:ojs2.ija.oauife.edu.ng:article-5772020-10-08T09:13:37Z FATE OF ADDED NITROGEN IN SOILS OLU-OBI, A. HEDLIN , R. A. CHO, C. M. Urea-N, nitrite ions, acid soils, soil fixation, liming, calcareous The transformation of added N in some Manitoba soils was studied in the laboratory. Addition of urea-N to acid soils led to accumulation of nitrite ions and some of this nitrogen was chemically dent-rifled. The initial rate of molecular N production was 3.2% of added N02 per day in acid Well wood soil and 1.4% for acid Pine Ridge soil. Nitrite ions also accumulated in the calcareous Almasippi soil (pH 7.7) for a short period, but was denitrified. Oxidation of ammonium ions was very slow in the acid soil. Soil fixation of added N was greater at low than at high soil pH, and soil organic matter fixed approximately 5 to 10 times as much N per unit weight as did clay. Liming the acid soils considerably reduced the amount of added N fixed. The Faculty of Agriculture Obafemi Awolowo University, Ile-Ife, Nigeria. 2020-10-08 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://ija.oauife.edu.ng/index.php/ija/article/view/577 Ife Journal of Agriculture; Vol. 17 No. 1 (1995): Ife Journal of Agriculture; 142-150 0331-6351 eng https://ija.oauife.edu.ng/index.php/ija/article/view/577/462 Copyright (c) 2020 Ife Journal of Agriculture |
| spellingShingle | Urea-N, nitrite ions, acid soils, soil fixation, liming, calcareous OLU-OBI, A. HEDLIN , R. A. CHO, C. M. FATE OF ADDED NITROGEN IN SOILS |
| title | FATE OF ADDED NITROGEN IN SOILS |
| title_full | FATE OF ADDED NITROGEN IN SOILS |
| title_fullStr | FATE OF ADDED NITROGEN IN SOILS |
| title_full_unstemmed | FATE OF ADDED NITROGEN IN SOILS |
| title_short | FATE OF ADDED NITROGEN IN SOILS |
| title_sort | fate of added nitrogen in soils |
| topic | Urea-N, nitrite ions, acid soils, soil fixation, liming, calcareous |
| topic_facet | Urea-N, nitrite ions, acid soils, soil fixation, liming, calcareous |
| url | https://ija.oauife.edu.ng/index.php/ija/article/view/577 |
| work_keys_str_mv | AT oluobia fateofaddednitrogeninsoils AT hedlinra fateofaddednitrogeninsoils AT chocm fateofaddednitrogeninsoils |