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Effet à court terme de la mise en culture sur le statut organique et l’agrégation d’un sol ferrallitique argileux du Congo
| Content Provider | Semantic Scholar |
|---|---|
| Author | Barthés, Bernard G. Kouakoua, Ernest Sala, Georges-Henri Hartmann, Christian Nyeté, B. |
| Copyright Year | 1996 |
| Abstract | Cultivation of oxisols of the Niari Valley (Congo) leads to considerable decline in the soil organic carbon content and structural stability in a few years. The objective of this study was to estimate the very short-term effects of cultivation on organic status and macroaggregate (> 0.2 mm) stability of a soil which had been under savanna for 20 yr. Another objective was to identify the determinants of macroaggregate stability.On one hand, after 5 mo of manual or mechanized cultivation, stable macroaggregate content MA decreased significantly in the 0- to 10-cm layer (7% on average); soil organic carbon stock S did not (6% on average), whereas the decrease in soil organic carbon content C was significant only under mechanized cultivation (13.5% on average, vs. 7% under manual cultivation). On the other hand, the influence of cultivation on MA, S and C was not significant in the 10- to 20-cm layer (variations < 5%, on average).MA was correlated with exchangeable aluminum content (r = 0.6), though its contr... |
| Starting Page | 493 |
| Ending Page | 499 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.4141/cjss96-061 |
| Volume Number | 76 |
| Alternate Webpage(s) | http://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_6/b_fdi_45-46/010008163.pdf |
| Alternate Webpage(s) | https://doi.org/10.4141/cjss96-061 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
