Etude de la dynamique de la matière organique (M.O.) dans les sols affectés par la salinité
Study of the dynamic of organic matter (O.M.) in saline soil. Using "in vitro" experiments, we studied the influence of salinity on the evolution and the transferts of humified compounds obtained from glucose and straw labelled with 14C. The intensity of these mechanisms were examined in d...
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| Format: | Article |
| Language: | English |
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Presses Agronomiques de Gembloux
1989-01-01
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| Series: | Tropicultura |
| Subjects: | |
| Online Access: | http://www.tropicultura.org/text/v7n3/90.pdf |
| _version_ | 1818550583582261248 |
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| author | Mallouhi, N. |
| author_facet | Mallouhi, N. |
| author_sort | Mallouhi, N. |
| collection | DOAJ |
| description | Study of the dynamic of organic matter (O.M.) in saline soil. Using "in vitro" experiments, we studied the influence of salinity on the evolution and the transferts of humified compounds obtained from glucose and straw labelled with 14C. The intensity of these mechanisms were examined in different clayed horizons with increasing salinity contents. During incubation experiments parformed under controlled conditions, we found a negative correlation between salinity infered from electrical conductivity measurements and the degree of humification determined by the ratio FA/HA. The inhibition of the biological activity was associated with the presence of high amounts of very mobile soluble or pseudosoluble compounds in the soil to the detriment of more condensed compounds. A high FA/HA ratio, and a low residual humin characterized the evolution of the organic matter in sodic soils. The extent of the movement of the radioactive humified compounds (soluble and pseudosoluble) was shown to increase as the soil salinity increases. The humification mechanisms in saline were then compared to those taking place in an eutrophic mull. |
| first_indexed | 2024-12-12T08:48:24Z |
| format | Article |
| id | doaj.art-fbd9252af67241d19211a8ff03c7ac6a |
| institution | Directory Open Access Journal |
| issn | 0771-3312 |
| language | English |
| last_indexed | 2024-12-12T08:48:24Z |
| publishDate | 1989-01-01 |
| publisher | Presses Agronomiques de Gembloux |
| record_format | Article |
| series | Tropicultura |
| spelling | doaj.art-fbd9252af67241d19211a8ff03c7ac6a2022-12-22T00:30:21ZengPresses Agronomiques de GemblouxTropicultura0771-33121989-01-01739097Etude de la dynamique de la matière organique (M.O.) dans les sols affectés par la salinitéMallouhi, N.Study of the dynamic of organic matter (O.M.) in saline soil. Using "in vitro" experiments, we studied the influence of salinity on the evolution and the transferts of humified compounds obtained from glucose and straw labelled with 14C. The intensity of these mechanisms were examined in different clayed horizons with increasing salinity contents. During incubation experiments parformed under controlled conditions, we found a negative correlation between salinity infered from electrical conductivity measurements and the degree of humification determined by the ratio FA/HA. The inhibition of the biological activity was associated with the presence of high amounts of very mobile soluble or pseudosoluble compounds in the soil to the detriment of more condensed compounds. A high FA/HA ratio, and a low residual humin characterized the evolution of the organic matter in sodic soils. The extent of the movement of the radioactive humified compounds (soluble and pseudosoluble) was shown to increase as the soil salinity increases. The humification mechanisms in saline were then compared to those taking place in an eutrophic mull.http://www.tropicultura.org/text/v7n3/90.pdfOrganic matterHumificationMineralizationSalted soils |
| spellingShingle | Mallouhi, N. Etude de la dynamique de la matière organique (M.O.) dans les sols affectés par la salinité Tropicultura Organic matter Humification Mineralization Salted soils |
| title | Etude de la dynamique de la matière organique (M.O.) dans les sols affectés par la salinité |
| title_full | Etude de la dynamique de la matière organique (M.O.) dans les sols affectés par la salinité |
| title_fullStr | Etude de la dynamique de la matière organique (M.O.) dans les sols affectés par la salinité |
| title_full_unstemmed | Etude de la dynamique de la matière organique (M.O.) dans les sols affectés par la salinité |
| title_short | Etude de la dynamique de la matière organique (M.O.) dans les sols affectés par la salinité |
| title_sort | etude de la dynamique de la matiere organique m o dans les sols affectes par la salinite |
| topic | Organic matter Humification Mineralization Salted soils |
| url | http://www.tropicultura.org/text/v7n3/90.pdf |
| work_keys_str_mv | AT mallouhin etudedeladynamiquedelamatiereorganiquemodanslessolsaffectesparlasalinite |