Soil Pore System
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. Utilização de um sensor de umidade para o Arduino na determinação da curva característica de retenção de água por um sistema poroso
Resumo Neste artigo é apresentada a utilização de um sensor de umidade para o Arduino no levantamento da curva característica de retenção de água por um sistema poroso, tal como, por exemplo, o solo. Essa curva é muito importante nos estudos ligados à caracterização físico-hídrica do meio poroso. Sua determinação possibilita a investigação d
Rev. Bras. Ensino Fís.. Publicado em: 09/09/2019
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2. Physical and geometric non-linear analysis using the finite difference method for one-dimensional consolidation problem
Abstract This article presents a numerical model based on the finite difference method for the physical and geometric non-linear analysis of a one-dimensional consolidation problem regarding a saturated, homogeneous and isotropic soil layer with low permeability and high compressibility. The problem is formulated by adopting the void ratio as the primary var
REM, Int. Eng. J.. Publicado em: 2019-06
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3. Temporal Variation of Soil Physical Quality under Conventional and No-Till Systems
ABSTRACT: Determination of soil physical quality (SPQ) is very important because it is related to many important soil processes. However, it is not clear which indicators should be considered in this evaluation, and information about temporal variation of SPQ under different soil tillage systems is scarce. The aim of this study was to determine the effects o
Rev. Bras. Ciênc. Solo. Publicado em: 16/04/2018
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4. Software for micromorphometric characterization of soil pores obtained from 2-D image analysis
ABSTRACT Studies of soil porosity through image analysis are important to an understanding of how the soil functions. However, the lack of a simplified methodology for the quantification of the shape, number, and size of soil pores has limited the use of information extracted from images. The present work proposes a software program for the quantification an
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-08
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5. Spatial and Temporal Variability of Soil CO2 Flux in Sugarcane Green Harvest Systems
ABSTRACT The sugarcane green harvest system, characterized by mechanized harvesting and the absence of crop burning, affects soil quality by increasing crop residue on the soil surface after harvest; thus, it contributes to improving the physical, chemical, and microbiological properties and influences the soil carbon content and CO2 flux (FCO2). This study
Rev. Bras. Ciênc. Solo. Publicado em: 23/06/2016
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6. Soil physical quality of Mollisols quantified by a global index
Indicators synthesizing the state of the structural quality and the function of the porous system are useful for assessing soil production capacity as well as the way it may serve natural ecosystems. This research aimed (i) to determine indicators of the state and function of the porous system, (ii) to use them to derive a global index to characterize the so
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-02
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7. Soil structure and greenhouse gas production differences between row and interrow positions under no-tillage
No-tillage in Brazil is an efficient agricultural system that improves crop productivity whilst controlling erosion caused to the soil by degradation. However, there is some concern regarding soil compaction. Our objective was to determine whether the function of soil structure in sustaining crop growth was dependent on row and interrow positions in long-ter
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-04
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8. Produção de óxido nitroso de solo cultivado com feijoeiro comum irrigado em sistema plantio direto no cerrado / Production of nitrous oxide from soil cultivated with common bean in irrigated no tillage system in savanna (Cerrado)
A perda de nitrogênio no sistema solo-planta tem repercussões econômicas e ambientais, especialmente quando óxidos de nitrogênio são emitidos para a atmosfera. O objetivo deste estudo foi avaliar a emissão de óxido nitrosos (N2O) em sistema de produção de feijoeiro comum irrigado em sistema plantio direto, sobre palhada de braquiária, com aplicaç
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2011
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9. Alterações estruturais e comportamento compressivo de um Latossolo Vermelho distrófico argiloso sob diferentes sistemas de uso e manejo.
Uma das principais conseqüências do manejo inadequado do solo é a compactação, que leva à perda da sua sustentabilidade e à redução da produtividade. O objetivo deste estudo foi avaliar as alterações estruturais e o comportamento compressivo de um Latossolo Vermelho distrófico sob Cerrado (C), plantio direto (PD) e preparo com arado de discos (AD
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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10. COMPORTAMENTO FÍSICO DE UM LATOSSOLO SOB INTEGRAÇÃO LAVOURA - PECUÁRIA / PHYSICAL BEHAVIOR OF A OXOSOL UNDER CROP-LIVESTOCK INTREGATION
Soil compaction under traffic of animals has become an increasingly significant problem in soils used for crop-livestock integration. The objective of this study was to determine the effect of integration crop-livestock and different soil management systems on their attributes water and mechanical and relate them to the development and productivity of soybea
Publicado em: 2009
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11. Using energy dispersive X ray fluorescence (EDXRF) technique to evaluate the suspended particulate matter from Limeira city, State of São Paulo, Brazil / Utilização da técnica de fluorescência de raios X por dispersão em energia (EDXRF) na avaliação do material particulado em suspensão na cidade de Limeira - SP
The main objective of this work was to evaluate the chemical composition of the suspended particulate matter from the atmosphere of the city of Limeira, State of São Paulo, by energy dispersive X-ray fluorescence (EDXRF) technique. A stacker filter sampler was used to collect the fine (particles with aerodynamic diameter between 2.5 and 10 müm) and the gro
Publicado em: 2009
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12. Integrated crop-livestock and soil physical quality in Brazilian Cerrado / IntegraÃÃo Lavoura-PecuÃria e a Qualidade FÃsica do Solo na RegiÃo do Cerrado
Soil physics plays a fundamental role in conserving soil and water in agricultural landscapes and is also a key parameter for accessing the sustainability of agropastoral systems. Both pasture history and management can have a significant effect on soil physical attributes, but conclusive research on this subject remains fragmentary. This work aimed to quant
Publicado em: 2008