Consulta: subjectFacets:"Soil physical quality"
Registros recuperados: 20
Data/hora: 10/06/2024 03:38:54

FORRAGEIRAS TROPICAIS EM CONSÓRCIO COM MILHO E ADUBAÇÃO NITROGENADA SOBRE AS PROPRIEDADES FÍSICAS DO SOLO
Provedor de dados: 196
Autores: Mattei, Eloisa; Rabello de Oliveira, Paulo Sérgio; Costa Crusciol, Carlos Alexandre; Rocha de Moraes Rego, Carlos Augusto; Piano, Jeferson Tiago; da Silveira, Lucas.
Os sistemas integrados de produção lavoura-pecuária (SIPAs) em associação ao sistema de semeadura direta, sofrem ação do pisoteio animal ou do tráfego intenso de máquinas agrícolas, podendo resultar em alterações nas propriedades físicas do solo. O objetivo deste trabalho foi avaliar o efeito da adubação nitrogenada e manejos das forrageiras tropicais nas propriedades físicas do solo. O experimento foi realizado entre outubro de 2017 e janeiro de 2020, em Marechal Cândido Rondon – PR, em blocos ao acaso, com parcelas sub-subdivididas com uma testemunha adicional e quatro repetições. As parcelas foram constituídas por duas espécies forrageiras consorciadas com o milho: Urochloa brizantha e Magathyrsus maximum, mais a testemunha adicional (milho solteiro)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Porosity; Soil physical quality; Resistance to penetration; Integrated systems; Porosidade; Qualidade física do solo; Resistência à penetração; Sistemas integrados.
Ano: 2021
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/6318

STRUCTURAL PROPERTIES OF SOIL IN MAIZE AND FORAGE GRASS INTERCROPPING UNDER NO-TILLAGE IN THE BRAZILIAN CERRADO
Provedor de dados: 70
Autores: Cagna,Camila P.; Calábria,Zieglenristen K. P.; Guedes Filho,Osvaldo; Pacheco,Leandro P.; Silva,Tonny J. A. da.
ABSTRACT Integration of forage grasses with grain crops, such as maize, allows maintaining soil cover. The objective of this study was to evaluate the tensile strength, friability, and stability of soil aggregates in the maize and forage grass intercropping under no-tillage system. The study used a completely randomized block design with seven treatments and three replications. Undisturbed soil samples were collected in two seasons (2015 and 2016) at 0–0.10 m and 0.10–0.20 m soil depth. The following properties of soil aggregates were measured: tensile strength (TS), friability (F), gravimetric moisture (GM), weighted mean diameter (WMD), geometric mean diameter (GMD), and aggregate stability index (ASI). The intercropping of maize with Urochloa...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aggregate stability index; Tensile strength; Soil physical quality.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000400512

SOIL ATTRIBUTES AND INITIAL CORN DEVELOPMENT AS A FUNCTION OF FERTILIZATION AND INTERCROPPING SYSTEMS
Provedor de dados: 70
Autores: Cortez,Jorge W.; Silva,Rouverson P. da; Furlani,Carlos E. A.; Olszevski,Nelci; Nagahama,Hideo de J.
ABSTRACT Fertilization systems that allow higher sowing speeds have been used in areas of grain production, as well as the use of intercropping to improve soil physical quality and provide better soil cover. This study aimed to evaluate soil attributes and the initial corn development and intercropping (corn + velvet bean, corn + pigeonpea, and corn + bonavist bean) as a function of fertilization systems (pre-sowing and sowing). The experiment was conducted in an Oxisol in a randomized block design in the 2 × 3 factorial scheme, with four replications. The number of days for emergence, plant stand, intercropping dry matter, soil straw cover, soil straw permanence index, penetration resistance, soil moisture, soil density, degree of compaction, and total...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Compaction; Vegetation cover; Soil physical quality.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000200257

Soil compaction by machine traffic and least limiting water range related to soybean yield
Provedor de dados: 86
Autores: Beutler,Amauri Nelson; Centurion,José Frederico; Silva,Alvaro Pires da; Centurion,Maria Aparecida Pessôa da Cruz; Leonel,Cristian Luarte; Freddi,Onã da Silva.
The research aimed to evaluate machine traffic effect on soil compaction and the least limiting water range related to soybean cultivar yields, during two years, in a Haplustox soil. The six treatments were related to tractor (11 Mg weight) passes by the same place: T0, no compaction; and T1*, 1; T1, 1; T2, 2; T4, 4 and T6, 6. In the treatment T1*, the compaction occurred when soil was dried, in 2003/2004, and with a 4 Mg tractor in 2004/2005. Soybean yield was evaluated in relation to soil compaction during two agricultural years in completely randomized design (compaction levels); however, in the second year, there was a factorial scheme (compaction levels, with and without irrigation), with four replicates represented by 9 m² plots. In the first year,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glicine max; Soil management; Soil physical quality.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008001100019

Tensile strength, friability, aggregation, and soil organic matter physical fractions of an Oxisol cultivated with sugarcane
Provedor de dados: 86
Autores: Kunde,Roberta Jeske; Lima,Cláudia Liane Rodrigues de; Silva,Sérgio Delmar dos Anjos e; Pillon,Clenio Nailto.
Abstract: The objective of this work was to evaluate the tensile strength, friability, aggregation, and the physical fractions of soil organic matter of a Rhodic Hapludox cultivated with sugarcane (Saccharum officinarum). The treatments consisted of one, three, and five years of cultivation of sugarcane, in the state of Rio Grande do Sul, Brazil. As a reference, a native forest adjacent to the cultivation area, with soil and relief characteristics similar to those of the cultivation areas, was used. Deformed samples were collected at 0.00-0.05, 0.05-0.10, and 0.10-0.20-m soil depths, for the determination of the soil physical attributes and for the physical fractionation of particle-size and density of the organic matter. The physical attribute evaluations...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum officinarum; Organic carbon; Organic matter fractionation; Soil physical quality.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000400487

Chemical and hydrophysical attributes of an Oxisol under coffee intercropped with brachiaria in the Cerrado
Provedor de dados: 86
Autores: Rocha,Omar Cruz; Ramos,Maria Lucrécia Gerosa; Veiga,Adriano Delly; Guerra,Antonio Fernando; Bartholo,Gabriel Ferreira; Rodrigues,Gustavo Costa; Silva,Juliano Escobar da.
Abstract The objective of this work was to evaluate the effect of irrigation and of the presence of brachiaria (Urochloa decumbens) between coffee (Coffea arabica) rows on coffee yield and on chemical and hydrophysical attributes of a Typic Haplustox. The study was conducted in the Cerrado region in Planaltina, Brasília, DF, Brazil, in a randomized complete block design, arranged in split-split plots, with four replicates. Water regimes (irrigated or rainfed) were assigned to the main plots, inter-row management systems to the subplots, and soil layers to the sub-subplots. The following soil attributes were determined: total organic carbon, total nitrogen, C/N ratio, carbon and nitrogen stocks, bulk density, aggregate stability, total porosity,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica; Urochloa decumbens; Cover crops; Soil physical quality; Soil porosity; Water availability.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901476

Influence of ryegrass managements on the physical properties of a Haplohumox
Provedor de dados: 86
Autores: Vizioli,Bruno; Cavalieri-Polizeli,Karina Maria Vieira; Barth,Gabriel.
Abstract: The objective of this work was to evaluate the influence of ryegrass (Lolium multiflorum) managements on the physical properties of a Haplohumox, and on the yields of corn and of ryegrass cultivated in succession to corn. The experiment was carried out in a randomized complete block design, with three treatments and three replicates, in which treatments were the different managements of ryegrass under no-tillage for silage, soil cover, and grazing. After nine years of management, samples were collected at 0.00-0.05, 0.05-0.10, 0.10-0.20, and 0.20-0.30-m soil depths, to determine the following soil properties: texture, total organic carbon, soil bulk density, macroporosity, microporosity, total porosity, and resistance to root penetration. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lolium multiflorum; No-tillage system; Soil physical quality.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000800952

Improvement of a testing apparatus for dynamometry: procedures for penetrometry and influence of strain rate to quantify the tensile strength of soil aggregates
Provedor de dados: 90
Autores: Figueiredo,Getulio Coutinho; Silva,Alvaro Pires da; Tormena,Cássio Antonio; Giarola,Neyde Fabíola Balarezo; Moraes,Sergio Oliveira; Almeida,Brivaldo Gomes de.
Soil penetration resistance (PR) and the tensile strength of aggregates (TS) are commonly used to characterize the physical and structural conditions of agricultural soils. This study aimed to assess the functionality of a dynamometry apparatus by linear speed and position control automation of its mobile base to measure PR and TS. The proposed equipment was used for PR measurement in undisturbed samples of a clayey "Nitossolo Vermelho eutroférrico" (Kandiudalfic Eutrudox) under rubber trees sampled in two positions (within and between rows). These samples were also used to measure the volumetric soil water content and bulk density, and determine the soil resistance to penetration curve (SRPC). The TS was measured in a sandy loam "Latossolo Vermelho...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil compaction; Soil physical quality; Tensile stress; Soil penetration resistance.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000200008

Quantification of the least limiting water range in an oxisol using two methodological strategies
Provedor de dados: 90
Autores: Moreira,Wagner Henrique; Tormena,Cássio Antônio; Betioli Junior,Edner; Figueiredo,Getulio Coutinho; Silva,Álvaro Pires da; Giarola,Neyde Fabíola Balarezo.
The least limiting water range (LLWR) has been used as an indicator of soil physical quality as it represents, in a single parameter, the soil physical properties directly linked to plant growth, with the exception of temperature. The usual procedure for obtaining the LLWR involves determination of the water retention curve (WRC) and the soil resistance to penetration curve (SRC) in soil samples with undisturbed structure in the laboratory. Determination of the WRC and SRC using field measurements (in situ ) is preferable, but requires appropriate instrumentation. The objective of this study was to determine the LLWR from the data collected for determination of WRC and SRC in situ using portable electronic instruments, and to compare those determinations...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Water content; Instrumentation; Critical bulk density; Soil physical quality; Matric potential.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000600012

Application of alkaline waste from pulp industry to acid soil with pine
Provedor de dados: 90
Autores: Pértile,Patricia; Albuquerque,Jackson Adriano; Gatiboni,Luciano Colpo; Costa,André da; Warmling,Maria Izabel.
In Brazil extensive areas are covered with pine forests, planted for pulp and paper production. This industry generates solid alkaline waste, such as dregs. The application of this dregs to forest soils is an alternative for soil acidity correction and plant nutrient supply, as well as a solution for its proper disposal. The purpose of this study was to compare the residual effect of surface application of dregs and dolomitic lime on (a) changes in the physical and chemical properties of an acidic soil and (b) pine tree development. The experiment was carried out in 2004 in Bocaina do Sul, Santa Catarina, consisting of the application of increasing dreg and lime rates to a Pinus taeda L. production area, on a Humic Cambisol, in a randomized block design...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dregs; Lime; Alkaline front; Soil physical quality; Pinus taeda L.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000300024

Wheat yield and physical properties of a brown latosol under no-tillage in south-central Paraná
Provedor de dados: 90
Autores: Kramer,Luiz Fernando Machado; Müller,Marcelo Marques Lopes; Tormena,Cássio Antônio; Michalovicz,Leandro; Nascimento,Ronaldo do; Vicensi,Marcelo.
Soil management influences the chemical and physical properties of soil. Chemical conditions have been thoroughly studied, while the role of soil physical conditions regarding crop yield has been neglected. This study aimed to analyze the wheat yield and its relationship with physical properties of an Oxisol under no-tillage (NT). The study was carried out between 2010 and 2011, in Reserva do Iguaçu, State of Paraná, Brazil, on the Campo Bonito farm, after 25 years of NT management. Based on harvest maps of barley (2006), wheat (2007) and maize (2009) of a plot (150 ha), zones with higher and lower yield potential (Z1 and Z2, respectively) were identified. Sampling grids with 16 units (50 x 50 m) and three sampling points per unit were established. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil physical quality; Wheat yield; Correlation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000500011

Least limiting water range in Spodosol and initial growth of sugarcane under soil bulk densities and salinities
Provedor de dados: 91
Autores: Bezerra,Raphaela R.; Silva,Ênio F. de F. e; Siqueira,Glécio M.; Dantas,Daniel da C.; Almeida,Brivaldo G. de; Silva,Alexsandro O. da.
ABSTRACT The impacts of agricultural mechanization and soil management on sugarcane activity may compromise the growth of plants. This study aimed to evaluate the initial growth of sugarcane (Saccharum officinarum) at soil densities under two salinity conditions, associated with the least limiting water range (LLWR), and obtain the critical density for the Spodosol. The treatments consisted of the use of five bulk densities (1.40; 1.50; 1.60; 1.70 and 1.80 Mg m-3) and two conditions of soil salinity (ECse = 0.5 and 3.0 dS m-1). Morphological variables and biomass of sugarcane plants were measured and, simultaneously, undisturbed soil samples were collected in the layers of 0.02-0.08 m to determine the water retention curve, soil resistance to penetration...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum officinarum; Soil compaction; Soil resistance to root penetration; Soil physical quality.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019001100833

Soil physico-hydrical properties resulting from the management in Integrated Production Systems
Provedor de dados: 124
Autores: Auler,André Carlos; Miara,Simone; Pires,Luiz Fernando; Fonseca,Adriel Ferreira da; Barth,Gabriel.
Anthropic action, such as the soil use and management systems, promote changes in the soil structure. These changes might hamper the development of plants in soil management practices that involve its mobilization, and the negative effects might be increased due to intensive use. The aim of this study was to evaluate the physico-hydrical properties of a Haplohumox in integrated production systems under different soil managements. The soil superficial (0.0-0.10 m) and sub-superficial (0.10-0.20 m) layers were evaluated in the different systems: conventional tillage (CT), minimum tillage (MT), no-tillage (NT) and chiseled no-tillage (CNT), taking into consideration the annual ryegrass cropped for different uses [cover crop (C), grazing (G) and silage (S)]...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Haplohumox; No-tillage; Soil physical quality; Crop-livestock integration; Agriculture sustainability.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000500013

Assessment of soil physical attributes at sowing row and inter-row under no-till system
Provedor de dados: 124
Autores: Blum,Julius; Giarola,Neyde Fabíola Balarezo; Silva,Álvaro Pires da; Guedes Filho,Osvaldo; Silva,Sâmala Glícia Carneiro; Eberhardt,Diogo Néia; Araújo,Suzana Romeiro.
In no-till systems, two different soil conditions are created during the sowing operation: row and inter-row positions. The objectives of this study were to evaluate, using static and dynamic soil attributes, the influence of no-till sowing operation on creating better physical environment for soybean crop growth. A field transect with clay content ranging from 150 to 400 g kg-1 was selected in Ponta Grossa, Paraná State, Brazil, from a Typic Hapludox that has been cultivated under no-till system for 16 years. After soybean harvest, 68 undisturbed soil samples were collected at both sowing row and inter-row positions. The following soil properties were evaluated: saturated hydraulic conductivity, air permeability, bulk density, total porosity, soil...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil physical quality; Soil conservation tillage; Soil compaction; Air permeability; Saturated hydraulic conductivity.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000500004

Savanna woodland soil micromorphology related to water retention
Provedor de dados: 63
Autores: Juhász,Carlos Eduardo Pinto; Cooper,Miguel; Cursi,Patrícia Ribeiro; Ketzer,André Oppitz; Toma,Raul Shiso.
The limiting factors of the Brazilian savanna physical environment have been largely discussed. Soil morphology is fundamental to understand the behavior of soil water flow, soil physical properties and soil-landscape relationships. The aim of this study is to relate soil micro and macromorphologic attributes to soil water retention on a toposequence under native savanna woodland (cerradão) in a permanent plot of 320 m &lt;FONT FACE=Symbol&gt;´&lt;/FONT&gt; 320 m installed in Assis, SP, Brazil. Samples collected at five points within the toposequence were used to determine the soil macroporosity by means of image analyses, estimated total porosity, chemical analysis, particle size distribution analysis and soil water retention. From the summit down to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazilian savanna; Soil porosity; Soil water flow; Soil physical quality; Toposequence.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000400005

Visual soil structure quality assessment on Oxisols under no-tillage system
Provedor de dados: 63
Autores: Giarola,Neyde Fabíola Balarezo; Silva,Alvaro Pires da; Tormena,Cássio Antônio; Ball,Bruce; Rosa,Jadir Aparecido.
Methods for evaluation the soil structure quality based on field evaluations are useful to determine strategies for soil management, with the advantage of requirement the use of little equipment and the possibility of immediate interpretation. A new methodology was recently developed to temperate soils for this purpose, called Visual Soil Structure Assessment (Ball et al., 2007). It was tested the hypothesis that it is possible to apply and advance in the interpretation of the results from use of Visual Soils Structure Assessment in cultivated Oxisols. Therefore the goal of this study was to apply, evaluate and enhance the potential of the methodology developed by Ball et al. (2007) in two Oxisols under long-term, no-till in Parana State, Brazil, as well...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Soil physical quality; Soil morphological analysis; Soil conservation management.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000400016

Water retention and penetration resistance equations for the least limiting water range
Provedor de dados: 63
Autores: Leão,Tairone Paiva.
ABSTRACT: The least limiting water range is a soil physical quality indicator, which is useful to predict the optimum water range for plant growth in a given soil and to study the effects of soil use and management over this optimum water range by integrating the effects of available water, penetration resistance and air filled porosity. This study tested six equations to fit water retention and penetration resistance surface responses used to determine the least limiting water range and present a simple algorithm written in the open source software R for fitting, calculation and visualization of the least limiting water range. Five soils from Brazil and Canada, under different use and management conditions were used to test the functions. The results show...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nonlinear regression; Soil physical quality.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001200172

Tensile strength, friability and organic carbon in an oxisol under a crop-livestock system
Provedor de dados: 63
Autores: Guimarães,Rachel Muylaert Locks; Tormena,Cássio Antonio; Alves,Sérgio José; Fidalski,Jonez; Blainski,Éverton.
The crop-livestock system can promote soil compaction in surface layers, mainly due to animal trampling. However, plants and their root growth, in interaction with animal trampling, can decrease the deleterious changes in soil structure caused by this system. Up to the present time, the physical soil modifications in crop-livestock systems, including oat and ryegrass crops for winter animal forages are unknown. The objective of this study was to quantify and to relate tensile strength, friability and soil organic carbon in an Oxisol under a crop-livestock system. The study was conducted in Campo Mourão - Paraná, Brazil. Four forage heights were used for the winter forages: 7, 14, 21 and 28 cm. For each forage height, five soil blocks were randomly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aggregate; Soil structure; No-tillage; Soil physical quality; Microstructure.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000400011

Least limiting water range for oil palm production in Amazon region, Brazil
Provedor de dados: 63
Autores: Sato,Michel Keisuke; Lima,Herdjania Veras de; Ferreira,Raphael Leone da Cruz; Rodrigues,Sueli; Silva,Álvaro Pires da.
ABSTRACT In areas cultivated with oil palm, typically mechanized field operations using heavy vehicles may negatively affect soil physical properties and productivity. The aim of this study was to evaluate soil physical quality in an area cultivated with oil palm by monitoring the temporal variation of the soil water content and relating it to the critical limits of the least limiting water range. Soil bulk density (Bd), soil penetration resistance (SR), least limiting water range (LLWR), and water stress days (WSD) were used to assess soil physical quality in planting rows (PR) and the traffic zone (TZ) at depths 0-20, 20-40, and 40-60 cm. The Bd was higher and the LLWR was reduced in TZ only at the surface layer. The effect of temporal variation in soil...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Elaeis guineensis Jacq; Soil physical quality; Soil compaction; Water stress.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000200148

Correlação linear e espacial entre a produtividade do feijoeiro e atributos físicos de um LATOSSOLO VERMELHO Distroférrico de Selvíria, Estado de Mato Grosso do Sul - DOI: 10.4025/actasciagron.v31i1.6641
Provedor de dados: 1
Autores: Martins, Mariana Ventura; UNESP; Carvalho, Morel de Passos e; UNESP; Andreotti, Marcelo; UNESP; Montanari, Rafael; UNESP.
Os atributos físicos do solo têm se mostrado de grade interesse para a agricultura contemporânea, uma vez que refletem decisivamente sobre a produtividade vegetal. Em 2006, no campus da Faculdade de Engenharia de Ilha Solteira, Unesp, analisou-se a produtividade do feijoeiro (PG) no sistema plantio direto irrigado, a resistência mecânica do solo à penetração (RP), a densidade do solo (DS) e as umidades gravimétrica (UG) e volumétrica (UV) em profundidade, num LATOSSOLO VERMELHO Distroférrico. O objetivo foi determinar as correlações lineares e espaciais, entre os atributos estudados, visando selecionar um indicador da qualidade física do solo de boa representatividade para a PG. Foi instalada a malha, para a coleta de dados contendo 135 pontos amostrais,...
Palavras-chave: 5.02.01.07-7 Solos Florestais manejo do solo; Qualidade física do solo; Plantio direto; Agricultura de precisão; Phaseolus vulgaris. soil management; Soil physical quality; No-tillage; Precision agriculture; Phaseolus vulgaris.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6641