83 results

Short-term effects of Urochloa intercropped with corn on the structure properties of a soil under no-tillage

João de Andrade Bonetti ORCID logo , Helio Henrique Soares Franco ORCID logo , Rachel Muylaert Locks Guimarães ORCID logo , Cássio Antonio Tormena ORCID logo

11/Jul/2025

ABSTRACT The reduced crop diversity under no-tillage increases soil compaction and reduces soil quality. This study aimed to investigate whether intercropping corn and Urochloa has significant short-term effects on soil physical quality, as assessed by Visual Evaluation of Soil Structure (VESS), and its correlations with physical properties. Soil physical quality was assessed after corn and Urochloa intercropping and corn without Urochloa. The VESS, penetration resistance, bulk density, air-filled porosity, air permeability, pore continuity index, and water storage capacity were determined […]

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Mechanized and irrigated coffee cultivation promotes physical subsurface constraints in Oxisols

Katherine Martinez Escobar ORCID logo , Laís Maria Rodrigues Silva ORCID logo , Keise Duarte Bacelar de Morais ORCID logo , Júlio César Lima Neves ORCID logo , Teogenes Senna de Oliveira ORCID logo

16/Jun/2025

ABSTRACT Soils of the Cerrados (Brazilian Savanna) are deep, well-structured, and well-drained, with flat to gently undulating terrain that favors mechanization for coffee cultivation. However, these soils are susceptible to compaction. This study aimed to assess the effect of mechanization on the physical characteristics of an Oxisol under irrigated coffee cultivation in the Alto Paranaíba-Minas Gerais State. We selected eight areas with different cultivars and years of Arabica coffee plantation, sampling five positions: right soil under the tree crown (RSC), […]

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Influence of tire pass on soil stress transfer and particle cohesion via DEM simulation

Mingyue Bai ORCID logo , Xianliang Wang ORCID logo , Haiyang Zhuang ORCID logo , Wenqi Zhao ORCID logo , Weifan Zhou ORCID logo

01/Apr/2025

ABSTRACT Stress transfers inside the soil during the traveling process of agricultural machinery, and the bonding of soil particles during this process is the main cause of soil compaction. In this study, the discrete element method was used to simulate the different responses of stress transfer and particle bonding in the soil under different times of tire passes in the tire-soil interaction process of agricultural machinery operation. It was found that from 1 to 8 passes, the increase in the […]

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Biopores, soil decompacting potential, and biomass of Brachiaria cultivars

Milson Evaldo Serafim ORCID logo , Samara Martins Barbosa ORCID logo , Walmes Marques Zeviani ORCID logo , Eduardo da Costa Severiano ORCID logo , Kátia Aparecida de Pinho Costa ORCID logo , Luciano Recart Romano ORCID logo , [...]

07/Mar/2025

ABSTRACT Grasses of the Brachiaria genus are widely used as cover crops in no-tillage areas of the Brazilian Cerrado. This study aimed to evaluate the ability of six Brachiaria cultivars to produce shoot and root biomass, and the potential of the root system to grow through a 0.01 m thick wax layer with 1.5 MPa penetration resistance. The plants were grown in PVC columns with a diameter of 0.1 m and a height of 0.7 m. The column was divided […]

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Mechanized harvesting of a Pinus taeda L. forest does not impair the physical properties of a Nitossolo Bruno

Jadiel Andognini ORCID logo , Jackson Adriano Albuquerque ORCID logo , Brayan Favarin de Oliveira ORCID logo

10/Feb/2025

ABSTRACT Santa Catarina State, in the South region of Brazil, has 713 thousand hectares of pine forests. Harvesting operations of this species can degrade the soil, especially when carried out on very wet soil. However, there is little information on the impact of pine harvesting on the physical properties of the soil in this region. This study aimed to evaluate the impact of Pinus taeda L. harvesting on the physical properties of a Nitossolo Bruno distrófico típico. Two areas were […]

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Saturated hydraulic conductivity and steady-state infiltration rate database for Brazilian soils

Marta Vasconcelos Ottoni ORCID logo , Wenceslau Geraldes Teixeira ORCID logo , Aline Mari Huf dos Reis ORCID logo , Letícia Guimarães Pimentel ORCID logo , Luciana Rodrigues Souza ORCID logo , Jackson Adriano Albuquerque ORCID logo , [...]

20/Jan/2025

ABSTRACT Soil saturated hydraulic conductivity (Ksat) and steady-state infiltration rate (SSIR) are essential and necessary soil properties for different geoscience applications. Values of these hydraulic properties for the Brazilian territory are difficult to access and are dispersed in research efforts carried out around the country. This study developed an easy-to-manipulate, freely accessible database of soil saturated hydraulic conductivity, comprising field and laboratory analyses, and steady-state infiltration rates for Brazilian soils. This database was named Ksat-SSIR-DB. One analysis of the Ksat-SSIR-DB […]

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Soil hydraulic properties, mineralogical alteration and pore formation in Regosols from southern Brazil

Fabrício de Araújo Pedron ORCID logo , Gabriel Antônio Deobald ORCID logo , Paulo Ivonir Gubiani ORCID logo , Luís Antônio Coutrim dos Santos ORCID logo , Antônio Carlos de Azevedo ORCID logo , José Miguel Reichert ORCID logo , [...]

27/Aug/2024

ABSTRACT Regosols (Neossolos) are soils with use limitations mainly related to effective depth, abundant presence of rock and saprolite fragments, and frequently high slope gradients; besides that, they represent a new agricultural frontier for grain production in southern Brazil. This study evaluated soil saturated hydraulic conductivity (Ksat) and water retention and availability in Regosols and saprolites derived from volcanic rocks in southern Brazil and the relationship of these variables with porosity in saprolithic horizons characterized by mineralogical weathering. The study […]

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Automatic measurement of water infiltration into the soil

Lucas Raimundo Rauber ORCID logo , Micael Stolben Mallman ORCID logo , Dalvan José Reinert ORCID logo , Fábio Soares Pires ORCID logo , Francieli de Vargas ORCID logo , Paulo Ivonir Gubiani ORCID logo

30/Apr/2024

ABSTRACT In hydrological modeling and for the development of projects related to soil and water conservation and civil engineering, determination of water infiltration variables into the soil plays a key role. However, measuring infiltration with manual infiltrometers is work-intensive and requires several people, which casts doubts on the consistency of the process description. Our objective was to develop automated and compact systems for data acquisition by double-concentric-ring and Cornell infiltrometers. The systems are based on air differential pressure sensors and […]

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Subsurface evaluation for aquaculture ponds in the Amazon Region

Pedro Andrés Chira Oliva ORCID logo , João Andrade dos Reis Júnior ORCID logo , Karina Palheta Gomes ORCID logo , Ramon Torres Pena ORCID logo , Ingracia Santiago Nunes ORCID logo , Samuel da Costa dos Santos ORCID logo , [...]

08/Apr/2024

ABSTRACT Few Brazilian rural landowners are aware of the technology available to survey the subsoil of terrains earmarked for aquaculture operations. This study evaluated subsoils of Monte Alegre (area 1) and Montenegro 3 (area 2) aquaculture zones in the geographic region of Bragança (Amazon region, northern Brazil), and the adequacy of these areas for aquaculture. Ground Penetrating Radar, electrical conductivity measurements, and sedimentological analyses were applied to evaluate the subsoil of fish farms. Apparent conductivity values recorded by the Electromagnetic […]

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Limiting physical properties of Technosols formed by the Fundão dam failure, Minas Gerais, Brazil

Betsy Carolina Muñoz de Páez ORCID logo , Moacir de Souza Dias Junior ORCID logo , Eduardo da Costa Severiano ORCID logo , Marco Aurélio Carbone Carneiro ORCID logo , Paula Cristina Caruana Martins ORCID logo

27/Mar/2024

ABSTRACT Physical properties of the Technosols formed by the tailings deposition may constitute a physical barrier that limits water movement and plant development due to the properties received from those sediments. This study aimed to evaluate the physical quality of the Technosols formed by the deposition of sediments displaced by the Fundão Dam failure, Mariana, Minas Gerais State, Brazil, based on the evaluation of physical properties and Load Bearing Capacity Models (LBCM). For that, three areas under different vegetation types […]

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