Changes in microbial and physicochemical properties under cover crop inclusion in a degraded common bean monoculture system

The expansion of the common bean monoculture system along with intensive agricultural practices focused on productivity has generated a misuse of natural resources, accompanied by a significant decline of the soil ecosystem services. The aim of this study was to analyze the short-term effect (3 years) of the inclusion of different cover crops (legumes, non-legumes and mixtures) on the physicochemical, biological properties and crop yield in a degraded common bean monoculture system in the north region of Argentina. The inclusion of legumes (vetch and melilotus) and non-legumes (oat and wheat) as sole cover crops over three consecutive years significantly increased the abundance of the main microbial groups, microbial biomass C and N (MBC and MBN) and the activity of the common bean rhizosphere microbial community, which resulted into a fast improvement of soil quality and rhizosphere microbiota compared with bean monoculture. However, mixed cover crops (oat + vetch) had a positive but lower impact on rhizosphere microbial community abundance compared to legume or non-legume cover crops when used as sole cover crops. The information generated in this study will contribute to the evaluation of the inclusion of specific cover crops as a conservation strategy to recover soil health and minimize soil degradation, while maintaining crop yields.

Bibliographic Details

Main Authors:	Aban, Carla Luciana, Perez Brandan, Carolina, Verdenelli, Romina Aylen, Huidobro, Dina Jorgelina, Meriles, José Manuel, Vargas Gil, Silvina
Format:	info:ar-repo/semantics/artículo biblioteca
Language:	eng
Published:	Elsevier 2021-12
Subjects:	Suelo, Sostenibilidad, Plantas de Cobertura, Biomasa, Propiedades Físico-Químicas Suelo, Cultivos, Soil, Sustainability, Cover Plants, Biomass, Soil Chemicophysical Properties, Crops, Cultivos de Cobertura,
Online Access:	http://hdl.handle.net/20.500.12123/10994 https://www.sciencedirect.com/science/article/pii/S1164556321001011 https://doi.org/10.1016/j.ejsobi.2021.103365
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