Variabilidade espacial de atributos físicos e mecânicos de um Argissolo sob cultivo de cana-de-açúcar

Tavares, Uilka Elisa; Rolim, Mário M.; Pedrosa, Elvira M. R.; Montenegro, Abelardo Antônio de Assunção; Magalhães, Adriana Guedes; Barreto, Marcela T. L.

doi:10.1590/s1415-43662012001100009

Cited by 14 publications

(13 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Thus, the pure nugget effect was observed for this property, due to the impossibility of fitting a semivariogram model to the distance scale used between the sampling points (Tavares et al, 2012). Anthropic interference, verified by successive croppings on this soil, adds sources of heterogeneity, promoting short distance variation, which may not be detected by the sampling grid.…”

Section: Results and Discusionmentioning

confidence: 96%

Sampling Design of Soil Physical Properties in a Conilon Coffee Field

Santos

Gontijo

Silva

et al. 2017

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

Establishing the number of samples required to determine values of soil physical properties ultimately results in optimization of labor and allows better representation of such attributes. The objective of this study was to analyze the spatial variability of soil physical properties in a Conilon coffee field and propose a soil sampling method better attuned to conditions of the management system. The experiment was performed in a Conilon coffee field in Espírito Santo state, Brazil, under a 3.0 × 2.0 × 1.0 m (4,000 plants ha -1 ) double spacing design. An irregular grid, with dimensions of 107 × 95.7 m and 65 sampling points, was set up. Soil samples were collected from the 0.00-0.20 m depth from each sampling point. Data were analyzed under descriptive statistical and geostatistical methods. Using statistical parameters, the adequate number of samples for analyzing the attributes under study was established, which ranged from 1 to 11 sampling points. With the exception of particle density, all soil physical properties showed a spatial dependence structure best fitted to the spherical model. Establishment of the number of samples and spatial variability for the physical properties of soils may be useful in developing sampling strategies that minimize costs for farmers within a tolerable and predictable level of error.

show abstract

Section: Results and Discusionmentioning

confidence: 96%

Sampling Design of Soil Physical Properties in a Conilon Coffee Field

Santos

Gontijo

Silva

et al. 2017

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

show abstract

“…Conforme Carter (1990), quando o grau de compactação (GC) supera a faixa de 0,86 a 0,90 ocorre uma grande redução nos macroporos afetando os movimentos dos fluidos e diminuindo a capacidade de desenvolvimento dos vegetais. Tavares et al (2012) obtiveram, avaliando um Argissolo Coeso em Pernambuco cultivado com cana de açúcar valores de grau de compactação variando de 0,76 a 0,89.…”

Section: Resultsunclassified

Qualidade física de Latossolo Amarelo de tabuleiros costeiros em diferentes sistemas de manejo da cana-de-açúcar

Vasconcelos

Souza

Cantalice

et al. 2014

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

R E S U M OOs atributos físicos do solo são indicativos imprescindíveis quando se pretende avaliar sistemas de manejo. Objetivouse, nesta pesquisa, estudar as alterações nas propriedades físicas de um Latossolo Amarelo Distrocoeso dos tabuleiros costeiros de Alagoas cultivado com cana-de-açúcar. Foram selecionadas áreas em talhões de produção de cana-deaçúcar. Os tratamentos avaliados corresponderam a área cultivada sob sistema de manejo irrigado (SMI), área sob sistema de manejo fertirrigado com vinhaça (SMFV) e área com aplicação de vinhaça + torta de filtro (SMVT), além de área de mata nativa (MN) com fragmento de mata atlântica, tomada como referência. Avaliaram-se a densidade do solo, porosidade total do solo, diâmetro médio ponderado dos agregados, condutividade hidráulica, carbono orgânico total, grau de compactação nas profundidades de 0-0,20; 0,20-0,40 e 0,40-0,60 m. Os sistemas de manejo cultivados com cana-de-açúcar que receberam adição de resíduos da cana (SMFV + SMVT) apresentaram alterações nas propriedades físicas do solo mais favoráveis ao adequado desenvolvimento desta cultura. Dentre os diferentes sistemas de manejo cultivados com cana-de-açúcar, o que sofreu menor degradação física foi a área sob SMVT, seguido da área sob SMFV. Physical quality of Yellow Oxisol of a coastal plain under different management systems in sugarcane A B S T R A C TThe physical attributes are important indicators to evaluate management systems. The objective of this research was to study alterations in the soil properties of the distrophic cohesive yellow Oxisol of a coastal plain in Alagoas state, Brazil, cultivated with sugarcane. Plots were selected in the following sugarcane-growing areas: area under irrigation management system (IMS), area fertigated with vinasse (FV), and area under application of vinasse + filter cake (V + FC). These management systems were compared to each other and to a control (native forest). The bulk soil density, total porosity, weighted mean diameter of the aggregates, hydraulic conductivity, total organic carbon and compaction degree were evaluated in 0-0.20; 0.20-0.40 e 0.40-0.60 m depths. The results showed that management system that receives residues of the sugarcane presents alterations in the physical properties of soil more adequate for development of sugarcane. Among the evaluated systems, little physical degradation was observed in area with application of vinasse + filter cake followed by area with application of vinasse.Qualidade física de Latossolo Amarelo de tabuleiros costeiros em diferentes sistemas de manejo da cana-de-açúcar

show abstract

“…The degree of spatial dependence (ADE) in all soil physical attributes, soil tillage and depth ranges were considered high (>75%), explained by the fact that the variables that present a strong degree of dependence are more influenced by intrinsic soil properties, such as texture, structure, organic matter content, density, mineralogy, and water content (Carneiro et al, 2009;Vendruscolo et al, 2011;Soares, 2013). Tavares et al (2012) evaluated the spatial relation of the soil density, porosity, macroporosity, microporosity and soil water content, verifying medium (27-75%) to high (>75%) degree of spatial dependence, for all evaluated attributes, indicating that these variables are non-random in space. The results of the variographic analysis showed that all physical attributes had spatial dependence (Figures 1 and 2).…”

Section: Resultsmentioning

confidence: 94%

Effects of spatial variability on soil physical attributes in areas cultivated with cassava prepared with different tillage systems

Vitória

Fernandes

2018

Com. Sci.

View full text Add to dashboard Cite

The objective of this study was to understand the effect of the spatial variability of the soil physical attributes in areas cultivated with cassava with different soil tillage systems, using the techniques of classical statistics and geostatistics. The experiment was carried in 2013 in São Mateus - ES, Brazil, on a cohesive ultisol, with a plan relief. The preparation of the soil for transplanting were made in two adjacent areas of approximately 0.5 ha each, using up to two passes of a harrow disk or two passes of a chisel plow. The following soil physical attributes were studied 90 days after transplanting: soil density (DS), macroporosity (Macro) and microporosity (Micro), soil water content according to two preparations systems and two depth ranges. Eighty plants were randomly selected to perform the experiment. The soil physical properties resulted in spatial variability due to the strong dependence for all variables, tillage system and soil depth. The semivariograms were adjusted to the spherical and exponential models for the evaluated physical attributes. Except for water content, it was observed an increase in the range (A0) with increasing depth for both tillage systems. The soil water content presented a decrease about 23% for the harrowing and scarification systems.

show abstract

Variabilidade espacial de atributos físicos e mecânicos de um Argissolo sob cultivo de cana-de-açúcar

Cited by 14 publications

References 21 publications

Sampling Design of Soil Physical Properties in a Conilon Coffee Field

Sampling Design of Soil Physical Properties in a Conilon Coffee Field

Qualidade física de Latossolo Amarelo de tabuleiros costeiros em diferentes sistemas de manejo da cana-de-açúcar

Effects of spatial variability on soil physical attributes in areas cultivated with cassava prepared with different tillage systems

Contact Info

Product

Resources

About