Análise De Trilha De Atributos Físicos Na Resistência À Penetração De Um Latossolo Amarelo

Lima, Renato Paiva de; Silva, Anderson Rodrigo; Oliveira, Dener Márcio da Silva

doi:10.32404/rean.v1i1.216

Cited by 2 publications

(4 citation statements)

References 18 publications

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“…It can be noticed in Table 7 that Ds and RA are significant parameters and can be used together PR to evaluate the physical quality in LVd and LVef. This result is also coherent to the ones presented by Lima et al (2014), in which Ds was the physical attribute in Yellow Oxisol that showed the highest positive correlation with PR. In this aspect, for Benedetti et al (2010), PR was highly influenced by Ds in different systems of use of the soil.…”

Section: Resultssupporting

confidence: 89%

Structural Quality Indicators in Compacted Oxisols Grown With Corn

Rossetti

Centurion

2020

Rev. Agric. Neotrop.

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In the face of the elevated cost of economic and environmental order to recover degraded soil, the monitoring of the structural quality of the soil through physical and plant indicators is recommended. This way, this work aimed to verify which parameters may be used together with soil penetration resistance (PR), after compression induced by agricultural machinery traffic in Haplustox (LVd) and an Eutrustox (LVef), grown with corn. The experiment was conducted with a randomized block design in a split-plot scheme with four replications. Five treatments and three soil layers (0-0.10; 0.10-0.20, and 0.20-0.30 m) for each soil class were evaluated. The treatments were: NC = conventional preparation without additional compression; C14, C17, and C110 = one pass of a tractor of 4, 7, and 10 Mg, respectively; C310= three passes of the tractor of 10 Mg. The variables evaluated were aggregate stability index, soil density (Ds), soil porosity, PR, and root and height variables, diameter, and kernel yield of the corn crop. PR increased with higher compression in the LVd, and in C14, C17, C110, and C310 in the layer of 0.10-0.30 m in LVef. Ds and root area of the corn are useful to analyze the structural quality of the soil together with the PR.

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Section: Resultssupporting

confidence: 89%

Structural Quality Indicators in Compacted Oxisols Grown With Corn

Rossetti

Centurion

2020

Rev. Agric. Neotrop.

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“…In general, the residual effect of the path coefficient analysis was high, especially in the treatments with high RR, eliminating the possibility of interpretation of the effects of these attributes (Lima et al, 2014;Tian et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

“…Among the variables that were used for the path analysis involving the high soil cover treatments, SC was the only variable that correlated directly with SL and which had a higher coefficient than the residual effect. The possibility of interpreting the effects of these attributes directly was discarded, as was argued by Lima et al (2014).…”

Section: Resultsmentioning

confidence: 99%

“…To determine the degrees of association between the attributes and to identify the possible influence of each attribute on erosion, first Pearson's correlation analysis was carried out and then path coefficient analysis was performed using the GENES program version 6.1. This type of analysis allows the clarification of direct and indirect effects of the simple correlation coefficients (Lima et al, 2014).…”

Section: Methodsmentioning

confidence: 99%

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Path coefficient analysis, a different approach to identify soil quality indicators

Ramos

Bertol

Bandeira

et al. 2019

Rev. bras. eng. agríc. ambient.

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Soil quality indicators related to water erosion reduction can assist with correct soil management. The objective of this research was to identify some variables that could be used as soil quality indicators with the aid of path coefficient analysis in order to reduce water erosion. The research was carried out in the field between May 2011 and April 2013 in southern Brazil on an Inceptisol. The following treatments were studied under simulated rainfall conditions: 1) no-tilled, cultivated and covered by cultural residue of ryegrass (Lolium multiflorum) (HCR); 2) no-tilled, cultivated and covered by crop residue of vetch (Vicia sativa) (HCV); 3) cultivated and scarified soil containing ryegrass roots (HRR); 4) cultivated and scarified soil containing vetch roots (HRV); and 5) bare and chiselled soil (BHR). Eight simulated rainfalls were applied in each treatment. Flow velocity, soil and water losses as well as variables or soil attributes influenced by management were quantified. Path coefficient analysis verified that the coverage, surface roughness, water infiltration rate and total organic carbon have the greatest direct or indirect relationships with soil and water losses or runoff velocity. These variables were indicative of soil quality, particularly its resistance to water erosion. In a rough soil, the total organic carbon, root mass and macroporosity of the soil are more important as indicators for soil resistance to water erosion.

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Análise De Trilha De Atributos Físicos Na Resistência À Penetração De Um Latossolo Amarelo

Cited by 2 publications

References 18 publications

Structural Quality Indicators in Compacted Oxisols Grown With Corn

Structural Quality Indicators in Compacted Oxisols Grown With Corn

Path coefficient analysis, a different approach to identify soil quality indicators

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