Short-term soil physical quality improvements promoted by an agroforestry system
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Short-term soil physical quality improvements promoted by an agroforestry system Cristiane Mariliz Sto¨cker . Adilson Luı´s Bamberg . Lizete Stumpf . Alex Becker Monteiro . Joel Henrique Cardoso . Ana Clau´dia Rodrigues de Lima
Received: 21 September 2019 / Accepted: 14 July 2020 Ó Springer Nature B.V. 2020
Abstract Concerns with environmental sustainability have promoted adoption of conservationist practices in agricultural production, mainly focused on soil quality preservation or recovery. The aim of this study was evaluating short-term soil physical quality improvements under agroforestry system management in Southern Brazil. The agroforestry system was implemented in 2013 in an Ultisol with Sandy Loam texture. Rows of agroforestry system (AFS-R) were composed by biomass producer trees intercalated with wood and fruit producer trees while in the inter-rows (AFS-IR) perennial sub-shrub, perennial grass, and summer and winter green manure annual species were implanted. Soil under native forest was used as control. Soil samples in the 0.0–0.1; 0.1–0.2 and 0.2–0.4 m depths were collected for the determination of physical attributes and the total organic carbon
content in 2015, 2016 and 2017. Bulk density decreased about 9% (AFS-R) and 6% (AFS-IR) in 0.0–0.1 m between 2015 and 2017. Total porosity increased over time only in AFS-R, at a rate of 0.025 m3 m-3 year-1. The total organic carbon content of AFS increased over time only in the 0.0–0.1 m layer, although remained up to 35% less in relation to the native forest. The agroforestry system resulted in consistent improvements of several soil physical attributes over short time, particularly in rows with arboreal plants, highlighting the role of diversified tree root systems and plant residues accumulation, which implied a rapid improvement in soil quality. In this context, long-term studies with agroforestry systems are crucial to understand the benefits on soil quality.
C. M. Sto¨cker (&) L. Stumpf A. B. Monteiro A. C. R. de Lima Universidade Federal de Pelotas - Campus Capa˜o Do Lea˜o, Campus Universita´rio, S/N, Capa˜o do Lea˜o, Rio Grande do Sul CEP: 96160-000, Brazil e-mail: [email protected]
A. L. Bamberg Embrapa Clima Temperado, Rodovia BR-392, Km 78, 98 Distrito, Monte Bonito, Caixa Postal 403, Pelotas, Rio Grande do Sul CEP: 96010-971, Brazil e-mail: [email protected]
L. Stumpf e-mail: [email protected]
J. H. Cardoso Embrapa Agroindu´stria Tropical, Rua Dra. Sara Mesquita, n8 2270, Bairro Planalto do Pici, CEP 60511-110 Fortaleza, Ceara´, Brazil e-mail: [email protected]
A. B. Monteiro e-mail: [email protected] A. C. R. de Lima e-mail: [email protected]
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Agroforest Syst
Keywords Row Inter-row Bulk density Total porosity Soil organic carbon
Introduction Native forests conversion into agricultural areas with conventional tillage promotes negative changes in soil properties and ecosystem services (Lavelle et al. 2014; Celentano et al. 2017). P
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