scholarly journals Relação entre as propriedades físico-hídricas dos solos e os tipos de uso da terra como subsídio ao manejo e conservação do solo e da água na bacia hidrográfica do rio Pirapó-PR ( Relation between the soil’s hydro-physical attributes and the land use...)

2016 ◽  
Vol 9 (6) ◽  
pp. 1769 ◽  
Author(s):  
Francieli Sant'ana Marcatto ◽  
Hélio Silveira
Keyword(s):  
Land Use ◽  
Drainage Basin ◽  
Aggregate Stability ◽  
Soil Management ◽  
Total Porosity ◽  
Infiltration Rate ◽  
Physical Analysis ◽  
Soil Density ◽  
Physical Behavior ◽  
Physical Attributes

Os Latossolos e Nitossolos da bacia hidrográfica do Pirapó apresentam reduzida suscetibilidade natural à ocorrência de processos erosivos, entretanto, o manejo inadequado tem promovido a sua degradação, impondo condições favoráveis a ação dos agentes de erosão. Diante disso, esse trabalho tem por objetivo estudar os Latossolos Vermelhos e Nitossolos Vermelhos de textura argilosa na bacia hidrográfica do Pirapó, apontando os efeitos das diferentes formas de uso e ocupação no comportamento físico e hídrico dos solos. Foram realizadas análises físicas de densidade do solo, porosidade total, macroporosidade, microporosidade, granulometria e estabilidade de agregados; análises hídricas de velocidade de infiltração e condutividade hidráulica e a análise química de carbono orgânico. Os resultados indicaram que os Latossolos e Nitossolos cultivados com culturas de grãos mostraram-se mais sensíveis às alterações impostas pelo tipo de uso, com alteração das suas propriedades físico-hídricas, sendo necessário buscar o correto manejo do solo garantindo a manutenção da qualidade da água e a sustentabilidade da bacia hidrográfica.   A B S T R A C T The Latosol and Nitosol in the Pirapó drainage basin present little natural susceptibility to erosive processes, however, inadequate management has been promoting its degradation and creating conditions favorable to the action of the agents of erosion. In face of this, this works objective is studying the Red Latososl and Red Nitosols of clayey texture in the Pirapó drainage basin, pointing the effects of the different forms of use and occupation in the hydro-physical behavior of these soils. Physical analysis of soil density, total porosity, macroporosity, microporosity, granulometry and aggregate stability were conducted, along with water analysis of infiltration rate and hydraulic conductivity, plus a chemical analysis of organic carbon. The results indicate the Latosols and Nitosols under grain crops are more sensitive to the changes caused by the type of use, with alteration of is hydro-physical attributes, making the search for the correct soil management necessary for maintenance of the water quality and sustainability of the drainage basin. Keywords: hydro-physical proprieties, land use, 4B landscape compartment, Latosol and Nitosol.   

scholarly journals Relação entre as propriedades físicas e hídricas e os tipos de uso da terra em Neossolos Regolíticos da bacia hidrográfica do rio Pirapó-PR / Relation between the physical and hydric properties and the types of use of land in Regolithic Neosols (...)

2017 ◽  
Vol 27 (50) ◽  
pp. 427
Author(s):  
Francieli Sant'ana Marcatto ◽  
Hélio Silveira
Keyword(s):  
Land Use ◽  
Chemical Analysis ◽  
Aggregate Stability ◽  
Total Porosity ◽  
Infiltration Rate ◽  
Native Forest ◽  
Physical Analysis ◽  
High Susceptibility ◽  
Grain Crops ◽  
Small Depth

<p>Os Neossolos Regolíticos da bacia hidrográfica do Pirapó-PR são utilizados, principalmente, para o cultivo de pastagem e culturas de grãos e apresentam baixo potencial de uso e elevada suscetibilidade à erosão, devido a sua pequena profundidade, grande pedregosidade e a ocorrência em áreas de relevo dissecado. Diante disso, esse trabalho objetiva estudar os Neossolos Regolíticos do compartimento de paisagem 4a da bacia hidrográfica do Pirapó e os efeitos das diferentes formas de uso e ocupação no comportamento físico e hídrico do solo. Foram analisados os horizontes superficiais desses solos, cultivados com pastagem, culturas de grãos e floresta nativa. Foram realizadas análises físicas de densidade do solo, porosidade total, macroporosidade, microporosidade, granulometria, resistência à penetração, umidade e estabilidade de agregados; análises hídricas de velocidade de infiltração e condutividade hidráulica e a análise química de carbono orgânico. Os resultados indicaram que o Neossolo Regolítico cultivado com pastagem e cultura de grãos mostrou-se sensível às alterações impostas pelo tipo de uso, com modificações em suas propriedades físico-hídricas.</p><p><strong>Palavras-chave</strong>: Neossolo Regolítico; propriedades físico-hídricas; uso da terra; bacia hidrográfica do Pirapó-PR.</p><p><strong>Abstract</strong></p><p>The Regolithic Neosols of the basin of Pirapó-PR are used mainly for pasture and grain crops and they have low potential for use and they have high susceptibility to erosion, so due to its small depth, they have great stoniness and the occurrence in areas of relief dissected. Therefore, this work aims to study the Regolithic Neosols of landscape compartment 4a of the basin of Pirapó and the effects of different forms of use and occupation in the physical and hydric behavior of the soil. The surface horizons of these soils were analyzed, grown with pasture, grain crops and native forest. Were realized physical analysis of density of soil, total porosity, macroporosity, microporosity, granulometry, resistance of penetration, moisture and aggregate stability; hydric analysis of infiltration rate and hydraulic conductivity and the chemical analysis of organic carbon. The results indicated that the Regolithic Neosols cultivated with pasture and crop grain was sensitive to changes imposed by the type of use, with changes in their physical and hydric properties.</p><p><strong>Keywords: </strong>Regolithic Neosols; physical and hydric properties; land use; basin of Pirapó-PR.</p>

Soil Management in the Physical Attributes and the Wheat Crop Irrigated Productivity

2019 ◽  
pp. 1-11
Author(s):  
Pedro Silvério Xavier Pereira ◽  
Aloisio Bianchini ◽  
Dryelle Sifuentes Pallaoro ◽  
Wininton Mendes da Silva ◽  
Rodrigo Fernandes Daros ◽  
...  
Keyword(s):  
Block Design ◽  
Soil Management ◽  
Total Porosity ◽  
Management Systems ◽  
Wheat Crop ◽  
Soil Resistance ◽  
Soil Density ◽  
Physical Attributes ◽  
Irrigated Wheat ◽  
Resistance To Penetration

The objective of this work was the influence of three management systems on the physical attributes and productivity of irrigated wheat, cultivar BRS-254, in the city of Tangará da Serra, MT, Brazil. The experimental design was a randomized block design in split plots, with eight replications, being considered as plots the three systems of soil management: Conventional management (MC) with two gradations (one heavy and one light); minimum management (MM) with light harrowing; and direct seeding (SD). As a subplot: two layers of soil (0 to 10 cm and 10 to 20 cm) and two seasons, being at 42 and 97 days after sowing (DAS) of wheat. The soil physical attributes evaluated were: macro and microporosity, total porosity, soil density and soil resistance to penetration. The yield of wheat crop was also evaluated. For the effects of MC, MM and SD, of the soil layers and DAS in the parameters macroporosity, microporosity and total soil porosity the MC and MM provided higher values ​​of macroporosity and microporosity decrease at 42 DAS. The macroporosity was higher in the layer up to 10 cm and the microporosity in the 20 cm layer at both the 42 and the 97 DAS. The aeration capacity of the soil followed in ascending order in the management systems SD <MC <MM. In SD there was a significant increase in macroporosity from 42 to 97 DAS. Microporosity presented higher value at 97 DAS. Total porosity, as well as macroporosity, presented the highest value at 42 DAS. For the effects on soil density at 42 DAS it was observed that the lowest density value was found in the MM followed by MC. At 97 DAS, the density values ​​practically returned to the initial value before the management intervention. It was verified that the soil density at the end of the crop cycle had an average value around 1.02 kg dm3. At 42 and 97 DAS the lowest soil density value was found in the 0 to 10 cm layer. In the 10 to 20 cm layer at 42 DAS, the SD had the highest soil density value in relation to the treatments studied, but at 97 DAS the SD had the lowest density value. For the effects on soil penetration resistance it was observed that soil resistance to penetration between MM and MC always remained below 2 MPa. The resistance curve showed that the soil rotation was efficient up to 10 cm depth, as they presented values ​​lower than those found for SD, which presented resistance values ​​between 1.5 and 2 MPa. For the effects on yield of irrigated wheat, the use of MM and SD as a way to reduce soil compaction did not contribute to the increase of yield of irrigated wheat. The MC provided higher productivity.

scholarly journals Implications of Agricultural Gypsum Doses in Physical-Hydric Attributes of a Typic Haplortox and on Root Growth and Soybean Productivity

2019 ◽  
Vol 11 (4) ◽  
pp. 549
Author(s):  
Francisco de Assis Guedes Júnior ◽  
Deonir Secco ◽  
Luiz Antônio Zanão Júnior ◽  
Luciene Kazue Tokura ◽  
Marcos Felipe Leal Martins
Keyword(s):  
Hydraulic Conductivity ◽  
Root Growth ◽  
Block Design ◽  
Total Porosity ◽  
Calcium Deficiency ◽  
Saturated Hydraulic Conductivity ◽  
Soil Density ◽  
Randomized Block Design ◽  
Significant Difference ◽  
Physical Attributes

The response to agricultural gypsum, as a conditioner of the root environment in depth, has been observed for most annual crops. These responses are attributed to the better distribution of roots of the crops in depth in the soil by the reduction of chemical impediments, caused by the exchangeable aluminum and calcium deficiency in these layers, which allows to the plants the use of greater volume of water when they occur summer. In this way, the objective of this study was to evaluate the effects of gypsum doses on physical-hydric attributes, root growth and soybean productivity. The experiment was conducted at the Agronomic Institute of Paran&aacute; (IAPAR) in Santa Tereza do Oeste-PR. The soil was classified as Typic Haplortox. Five doses of agricultural gypsum were evaluated: 0; 3; 6; 9 and 12 t ha-1, in outline randomized block design with six repetitions. Soil density, total porosity, macroporosity, microporosity and saturated hydraulic conductivity were evaluated at layers of 0.0-0.1; 0.1-0.2 and 0.2-0.3 m. Soybean productivity and root growth were also evaluated. Data were submitted to regression analysis. The physical attributes soil density, macroporosity and saturated hydraulic conductivity did not differ significantly with the application of the gypsum doses in the 0.0-0.1 and 0.2-0.3 m layers. However, in the 0.1-0.2 m layer, due to pressures imposed by the machines and agricultural implements deforming the soil, there were significant differences in the physical attributes of the density, macroporosity and saturated hydraulic conductivity. There was no significant difference in grain productivity and root growth of soybean.

scholarly journals Landscape structure in the Pirapó, Paranapanema 3 and 4 Hydrographic Unit, in the state of Paraná, Brazil

2015 ◽  
Vol 75 (4 suppl 2) ◽  
pp. 107-119
Author(s):  
M. T. Nóbrega ◽  
E. Serra ◽  
H. Silveira ◽  
P. M. B. Terassi ◽  
C. M. Bonifácio
Keyword(s):  
Land Use ◽  
Water Resources ◽  
Spatial Structure ◽  
Landscape Structure ◽  
Drainage Basin ◽  
The State ◽  
Integrated Analysis ◽  
Drainage Basins ◽  
Physical Attributes ◽  
Over Time

The aim of this study is to characterize the Pirapó, Paranapanema 3 and 4 Hydrographic Unit, emphasizing its physical attributes and processes of use and occupation, responsible for the structure of the current landscape and the state of its water resources. The recognition of the landscape’s spatial structure in the hydrographic unit and its drainage basins was obtained by integrated analysis of the main elements that compose it: geology, landforms (hypsometric and slope), soils, climate and land use. Analysis revealed that within each drainage basin several variations in the spatial structure of the landscape occur which produce an internal compartmentalization. Each compartment is defined by its own geo-ecological structure, physiognomic standards and dynamics, reflected in its potentialities and vulnerabilities and in the conditions of water resources in the wake of occupation and use over time.

scholarly journals Gypsum, Soil Scarification and Succession Planting as Alternatives to Mitigate Compaction of Dystrophic Red-Yellow Latosol

2018 ◽  
Vol 10 (8) ◽  
pp. 277
Author(s):  
Eduardo Antonio Neves dos Santos ◽  
Milton César Costa Campos ◽  
Jose Mauricio da Cunha ◽  
Fernando Gomes de Souza ◽  
Paulo Guilherme Salvador Wadt ◽  
...  
Keyword(s):  
Block Design ◽  
Total Porosity ◽  
Penetration Resistance ◽  
Soil Parameters ◽  
Soil Density ◽  
Randomized Block Design ◽  
Soil Scarification ◽  
Physical Attributes ◽  
Sustainable Agricultural Systems ◽  
The Impact

Understanding and quantifying the impact of soil management and use on its physical properties are essential to the development of sustainable agricultural systems. Thus, the aim of this study was to assess the effect of agricultural gypsum, soil scarification and succession planting on the physical attributes of dystrophic red-yellow latosol in Porto Velho, Rondônia state (RO), Brazil. The treatments used were absence and application of 2000 kg ha-1 of gypsum, absence and use of soil scarification, and three types of crop succession: SF (soybean/fallow), SMF (soybean/maize/fallow) and SMBF (soybean/maize/brachiaria/fallow). A randomized block design was used on eight blocks, for a 2 × 2 × 3 factorial arrangement. Soil parameters assessed were macroporosity, microporosity, total porosity, soil density, moisture content and penetration resistance. Data normality was assessed using the Shapiro-Wilk test. The data were submitted to analysis of variance and means were compared by the Scott-Knott test at 5% probability. The highest macroporosity and total porosity values were recorded in treatments with gypsum application and soil scarification. Penetration resistance was lower in the SMBF and SMF crop successions. There was no treatment effect on the soil density.

scholarly journals Fractal features of soil texture and physical attributes in indian dark earth under different uses in Western Amazon

2020 ◽  
Vol 36 (6) ◽  
Author(s):  
Half Weinberg Corrêa Jordão ◽  
Milton César Costa Campos ◽  
José Maurício da Cunha ◽  
Ivanildo Amorim de Oliveira ◽  
Laércio Santos Silva ◽  
...  
Keyword(s):  
Fractal Dimension ◽  
Soil Texture ◽  
Clay Fraction ◽  
Aggregate Stability ◽  
Total Porosity ◽  
The Other ◽  
Soil Core ◽  
Significant Difference ◽  
Physical Attributes ◽  
D Value

Studying particle size distribution is important to understand soil structure and formation processes. This research aimed to assess the fractal dimension of soil texture in Indian Dark Earth (IDE) areas in southern Amazonas state under different land uses, as follows: two areas in the municipality of Apuí, one growing cocoa and the other coffee; a grassland area in the municipality of Manicoré; and a forest area in the municipality of Novo Aripuanã. A sampling grid containing 88 collection points (intersecting points on the grid) was established in each area, measuring 80 x 42 m for the cocoa and coffee-growing sites, and 80 x 56 m and 60 x 42 m for the grassland and forest areas, respectively. Soil samples were collected in soil core and as clumps at a depth of 0.0-0.20m to determine the structural physical properties and texture of the soil. The following physical attributes were assessed: texture (PSD), bulk density (BD), macroporosity (Macro), microporosity (Micro), total porosity (TP) and aggregate stability (GMD and WMD). The fractal dimension (D) of the soil texture was determined, followed by analysis of variance and comparison of the means using Tukey’s test (p≤0.05). Pearson’s correlation was applied to assess the correlation between variables. There was a significant difference between the IDEs studied, with a higher D value in the cocoa-growing area in relation to the other sites. Additionally, the larger the clay fraction, the higher the D value. Fractal dimension (D) showed a positive correlation with sand, clay, BD, Macro, GMD and WMD, and a negative correlation with silt, micro, TP. Based on the D values obtained, the ADE cultivated with cocoa showed superior quality in relation to the other areas studied.

Chemical and Physical Quality of the Entisol in a Natural Regeneration Area in the Semiarid Region of Paraiba

2019 ◽  
pp. 1-7
Author(s):  
Cássio Ricardo Gonçalves da Costa ◽  
Vânia Da Silva Fraga ◽  
George Rodrigues Lambais ◽  
Kilmer Oliveira Soares ◽  
Stella Ribeiro Prazeres Suddarth ◽  
...  
Keyword(s):  
Particle Density ◽  
Sandy Loam ◽  
Chemical Characterization ◽  
Aggregate Stability ◽  
Growth Index ◽  
Total Porosity ◽  
Semiarid Region ◽  
Soil Density ◽  
Physical Quality ◽  
Exchangeable Acidity

The change in the use of the soil causes an imbalance in the ecosystems, altering the chemical and physical properties, which can make their natural recovery unviable. This study aimed to characterize chemically and physically an Entisol under the Caatinga area in a 30 years ecological succession stage in the Semiarid region of Paraiba. The experiment was carried out at the Experimental Station Professor Ignácio Salcêdo, belonging to the National Institute of Semiarid (INSA), located in the municipality of Campina Grande, in the state of Paraíba, soil samples were collected in the 0-10 cm layer, for the determination of pH levels (H2O), exchangeable acidity (Al3+) and potential acidity (H + Al), Ca2+, Mg2+, K+, P, Na+, CTC and SB, Total organic carbon (TOC) and organic matter (OM). In the physical analyses, texture, soil density, particle density, total porosity and aggregate stability were determined. The chemical characterization observed the presence of high levels of K+, Ca2+, Mg2+, CTC and SB, and low levels of Al3+ and Na+ with reduced OM and TOC contents in the 0-10 cm layer. As for physics, the textural classification was sandy loam soil, the soil density, soil porosity and aggregate stability showed values below the critical root growth index in sandy soils. The soil presented recovery characteristics of its chemical and physical quality. The description of the Entisol in the field in soil surveys contributes to a new database in order to predict a better way of use, and these results are references in studies of soil quality recovery in degraded areas in the Caatinga area.

scholarly journals Duration of the effects of scarification and raised bed associated with vegetation cover on soybean yield on an Alfisol

2018 ◽  
Vol 53 (11) ◽  
pp. 1230-1238
Author(s):  
Silvana Spaniol Fin ◽  
Enio Marchesan ◽  
Paulo Ivonir Gubiani ◽  
João Alberto Pedroso Farenzena ◽  
Marcos Stefanello Murari ◽  
...  
Keyword(s):  
Grain Yield ◽  
Cover Crop ◽  
Total Porosity ◽  
Soil Density ◽  
Crop Season ◽  
Two Factors ◽  
Soil Preparation ◽  
Physical Attributes ◽  
Raised Bed ◽  
Winter Fallow

Abstract: The objective of this work was to determine the duration of the effects of the mechanical interventions scarification and raised bed on soybean (Glycine max) grain yield on an Alfisol, as well as to evaluate, through physical indicators, if the use of cover plants during winter increases the duration of these effects. The experimental design was a complete randomized block with four replicates. Two factors were evaluated. The first consisted of types of soil preparation systems: SC14, scarification in November 2014; SC15, scarification in November 2015; RB14, raised bed built in November 2014; and RB15, raised bed built in November 2015. The second consisted of the type of cover crop used: winter fallow, oat, ryegrass, and wheat. From November 2015 to April 2016, soybean was cultivated under the different soil preparation systems. Soil density, total porosity, macroporosity, microporosity, soil saturated hydraulic conductivity, soil resistance to mechanical penetration, and soybean grain yield were evaluated. There was no effect of cover plants after one crop season on the maintenance of soil physical attributes. Changes in soil density, total porosity, and resistance to mechanical penetration, promoted by scarification, are noticeable up to at least 18 months. The continuance of these modifications reflects in soybean grain yield in the second harvest.

scholarly journals Soil Physical Attributes in Long-Term Soil Management Systems (Tillage and No-till)

2020 ◽  
Vol 12 (4) ◽  
pp. 194
Author(s):  
Venâncio Rodrigues e Silva ◽  
José Luiz Rodrigues Torres ◽  
Danyllo Denner de Almeida Costa ◽  
Bruna de Souza Silveira ◽  
Dinamar Márcia da Silva Vieira ◽  
...  
Keyword(s):  
Soil Management ◽  
Total Porosity ◽  
Conventional Tillage ◽  
Management Systems ◽  
Root Penetration ◽  
Mechanical Resistance ◽  
No Tillage ◽  
Tillage System ◽  
Physical Attributes

The period of implantation of the no-tillage system (NTS) is a fundamental factor to the dimension of the changes that occur to the soil&#39;s physical, chemical and biological attributes. Thus, the objective of this study was to evaluate the soil changes to the physical attributes and correlate the results to the soil organic matter in areas of different long-term soil management. The study was set as a completely randomised design, in a 4 &times; 4 factorial scheme, with four management systems [5 years NTS (NTS5); 17 years NTS (NTS17); conventional tillage system for 20 years (CTS20); native area (NA)], and four soil depths (0-0.05, 0.05-0.1, 0.1-0.2, 0.2-0.4 m), with five repetitions. Soil mechanical resistance to root penetration (RP), bulk density (SD), volumetric moisture (VM), macro (Ma), microporosity (Mi) and total porosity (TP), and the aggregation parameters were evaluated. The CTS20, NTS5 and NTS17 presented superior SD in the most superficial soil layers, which was not yet causing resistance to root development. The SD was the only physical attribute that correlated significantly with all the other soil attributes evaluated, indicating the importance of such attribute to evaluate soil quality to crops. The soil physical attributes found in the Cerrado native area followed the sequence of similarities: no-tillage system with 17 years (most similar), with five years and the conventional tillage system (less similar). The changes caused by the anthropic activity in the soil&#39;s physical attributes are more pronounced and perceptible in soil depths up to 0.2 m.

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