Soil carbon accumulation in cotton production systems in the Brazilian Cerrado
| Autor: | Alexandre Cunha de Barcellos Ferreira, Ana Luiza Dias Coelho Borin, Fernando Mendes Lamas, Julio Cesar Bogiani, Mellissa Ananias Soler da Silva, Joao Luis da Silva Filho, Luiz Alberto Staut |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Acta Scientiarum: Agronomy, Vol 42, Pp e43039-e43039 (2019) |
| Druh dokumentu: | article |
| ISSN: | 1679-9275 1807-8621 |
| DOI: | 10.4025/actasciagron.v42i1.43039 |
| Popis: | Sustainable production systems, such as the no-tillage system (NTS), have a tendency to increase organic carbon in the soil. However, in Brazilian cotton production, the conventional tillage system (CTS) is predominant, and long-term studies on cotton crop under the NTS are scarce. The present study aimed to evaluate the effect of soil management and crop rotation systems on the cotton fiber yield as well as on the carbon and nitrogen accumulation in the soil. This study was conducted in the Brazilian savanna over 9 years and consisted of the following four treatments with different soil management systems: the NTS and CTS with the succession or rotation of crops (cotton, soybean, maize, and Urochloa ruziziensis). The NTS increased the carbon content by 55% in the top 5 cm after 9 years and increased the carbon stock by approximately 20% at a depth of up to 40 cm. Crop rotation with soybean, maize, and cotton was insufficient to increase the carbon stock in the soil under the CTS. In addition to increasing the fiber yield, the cotton crop in a NTS rotated with soybean + U. ruziziensis and with maize + U. ruziziensis increases the carbon stock and nitrogen content in soil. |
| Databáze: | Directory of Open Access Journals |
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