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
DOIAbstract
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 (...
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