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Evolution of soil organic carbon during a chronosequence of transformation from cacao (Theobroma cacao l.) plantation to grassland

Salvador Morales, Pedro and Sanchez Hernandez, Ruffo and Sánchez Gómez, Delfino and López Noverola, Ulises and Santiago, Gelacio Alejo and Valdés Velarde, Eduardo and Gallardo Lancho, Juan Fernando (2017) Evolution of soil organic carbon during a chronosequence of transformation from cacao (Theobroma cacao l.) plantation to grassland. Acta Agronómica, 66 (4). 525 - 530. ISSN 2323-0118

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Resumen

The aim of this research was to evaluate the impact of the soil use change of the Cocoa Agroforestry System (CAS) on soil organic carbon (SOC) levels and other indicating soil chemical fertility properties (apparent density ρb, cation exchange capacity CEC, total soil N TSN), when a soil use change occurs from CAS to grassland (GL). For this, in order to be selected was recorded, considering different time intervals (1-5, 6-10 y 11-20 years). However, a CAS of 20-35 years was considered as a reference. In addition, soil samples were taken at -30 cm depth to determine the contents of SOC, TSN, CEC, ρb, soil organic matter (SOM) and the soil C/N relationship. Consequently, an in situ resistance to soil penetration was evaluated. The results indicated the change in soil use from CAS to GL, did not cause a significant decrease in the amount of stored SOC (0-30 cm) during the considered time with respect to CAS. However, if only the first -10 cm of soil is sampled, a significant soil compaction is observed throughout a decrease in the CEC value in the long term (20 years).

Tipo de documento:Artículo - Article
Palabras clave:Soil use change, edaphic apparent density, soil fertility, soil organic matter, edaphic C/N relationship
Temática:5 Ciencias naturales y matemáticas / Science > 55 Ciencias de la tierra / Earth sciences & geology
6 Tecnología (ciencias aplicadas) / Technology > 63 Agricultura y tecnologías relacionadas / Agriculture
Unidad administrativa:Revistas electrónicas UN > Acta Agronómica
Código ID:59872
Enviado por : Dirección Nacional de Bibliotecas STECNICO
Enviado el día :28 Noviembre 2017 14:51
Ultima modificación:28 Noviembre 2017 14:51
Ultima modificación:28 Noviembre 2017 14:51
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