Artículo
Soil organic carbon in cropping sequences with predominance of soya bean in the argentinean humid Pampas
Martinez, Juan P.; Crespo, Cecilia
; Sainz Rozas, Hernan Rene
; Echeverría, Hernán; Studdert, Guillermo Alberto; Martinez, Fernando; Cordone, Graciela; Barbieri, Pablo Andres
Fecha de publicación:
01/2020
Editorial:
Wiley Blackwell Publishing, Inc
Revista:
Soil Use And Management
ISSN:
0266-0032
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Soya bean (Glycine max (L.) Merr.) monoculture can lead to a decrease in labile fractions of soil organic carbon (SOC). This study sought to evaluate the effects of cover crops (CC), application of fertilizer, and crop rotation on SOC, particulate organic carbon (POC), and soil carbon input in soya bean-based crop sequences under a no-till cropping system in the Argentinean Humid Pampas. Five crop sequences at two sites differing in initial SOC were evaluated: continuous soya bean (Sb), continuous soya bean fertilized with phosphorus (P) and sulphur (S) (Sbf), grass CC / PS-fertilized soya bean (CC/Sbf), nitrogen (N)-fertilized CC / PS-fertilized soya bean (CCf/Sbf) and NPS-fertilized crop rotation with high intensification sequence index (ISI) (Rot). At 0–5 cm, SOC and POC were higher (p <.05) in the sequences with higher residue-C supply (CC/Sbf; CCf/Sbf and Rot) at both sites. Changes in SOC at 0–20 cm simulated by AMG model closely tracked measured results at 0–20 cm. Findings from this study suggest that the inclusion of CC or crop rotation with high ISI improved C balance in soils under crop sequences with soya bean predominance.
Palabras clave:
COVER CROPS
,
INTENSIFICATION
,
PARTICULATE ORGANIC CARBON
,
SIMULATION MODEL
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Identificadores
Colecciones
Articulos(CCT - MAR DEL PLATA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - MAR DEL PLATA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - MAR DEL PLATA
Citación
Martinez, Juan P.; Crespo, Cecilia; Sainz Rozas, Hernan Rene; Echeverría, Hernán; Studdert, Guillermo Alberto; et al.; Soil organic carbon in cropping sequences with predominance of soya bean in the argentinean humid Pampas; Wiley Blackwell Publishing, Inc; Soil Use And Management; 36; 1; 1-2020; 173-183
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