Soil compressibility and least limiting water range of a constructed soil under cover crops after coal mining in Southern Brazil

Lima, ClÃ¡udia Liane Rodrigues de; Miola, Ezequiel César Carvalho; Timm, Luís Carlos; Pauletto, Eloy Antônio; Silva, Álvaro Pires da

doi:10.1016/j.still.2012.06.006

Cited by 36 publications

(30 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This result characterized the soil as physically limiting for plant growth due to compaction. Similar results were reported by Lima et al (2012) and Gonçalves et al (2014), indicating that in tropical soils (namely, Oxisols) penetration resistence is the main variable associated with the decrease in the LLWR (soil physical quality).…”

Section: Resultssupporting

confidence: 85%

Sweet Sorghum Performance Affected by Soil Compaction and Sowing Time as a Second Crop in the Brazilian Cerrado

Júnnyor

Severiano

Silva

et al. 2015

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

Increasing attention has recently been given to sweet sorghum as a renewable raw material for ethanol production, mainly because its cultivation can be fully mechanized. However, the intensive use of agricultural machinery causes soil structural degradation, especially when performed under inadequate conditions of soil moisture. The aims of this study were to evaluate the physical quality of aLatossolo Vermelho Distroférrico (Oxisol) under compaction and its components on sweet sorghum yield forsecond cropsowing in the Brazilian Cerrado (Brazilian tropical savanna). The experiment was conducted in a randomized block design, in a split plot arrangement, with four replications. Five levels of soil compaction were tested from the passing of a tractor at the following traffic intensities: 0 (absence of additional compaction), 1, 2, 7, and 15 passes over the same spot. The subplots consisted of three different sowing times of sweet sorghum during the off-season of 2013 (20/01, 17/02, and 16/03). Soil physical quality was measured through the least limiting water range (LLWR) and soil water limitation; crop yield and technological parameters were also measured. Monitoring of soil water contents indicated a reduction in the frequency of water content in the soil within the limits of the LLWR (Fwithin) as agricultural traffic increased (T0 = T1 = T2>T7>T15), and crop yield is directly associated with soil water content. The crop sown in January had higher industrial quality; however, there was stalk yield reduction when bulk density was greater than 1.26 Mg m-3, with a maximum yield of 50 Mg ha-1 in this sowing time. Cultivation of sweet sorghum as a second crop is a promising alternative, but care should be taken in cultivation under conditions of pronounced climatic risks, due to low stalk yield.

show abstract

Section: Resultssupporting

confidence: 85%

Sweet Sorghum Performance Affected by Soil Compaction and Sowing Time as a Second Crop in the Brazilian Cerrado

Júnnyor

Severiano

Silva

et al. 2015

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

show abstract

“…Trabalhos têm sido publicados na literatura adotando valores de 2,0 MPa para RP (Taylor et al, 1966), de 10 % para PA (Grable e Siemer, 1968), de 0,01 MPa para o conteúdo de água referente à capacidade de campo (CC) (Reichardt, 1988) e de 1,5 MPa para o conteúdo de água referente ao ponto de murcha permanente (PMP) (Savage et al, 1996). Em se tratando de solos construídos, Lima et al (2012) também adotaram esses limites para calcular o IHO que foi utilizado como indicador na avaliação do desempenho de quatro diferentes plantas de cobertura em restaurar a condição natural da paisagem em área de mineração em Candiota, no RS, Brasil.…”

Section: Introductionunclassified

Intervalo Hídrico Ótimo Em Solo Construído Após Mineração De Carvão Em Diferentes Limites Críticos De Resistência À Penetração E Umidade

Miola

Pauletto

Lima

et al. 2015

Rev. Bras. Ciênc. Solo

Self Cite

View full text Add to dashboard Cite

show abstract

“…According to Lima et al (2012), soil compressibility and shearing parameters are influenced by compaction states.…”

Section: Resultsmentioning

confidence: 99%

Simulated Traffic Dynamic Loading on Physical Properties of a Red Latosol under No-Tillage

Santos¹,

Viana²,

Silva³

et al. 2018

JAS

View full text Add to dashboard Cite

The use of intensive mechanization in no-tillage areas can change soil physical conditions, mainly in the "Cerrado", which has reduced cover ratio. This study aimed to evaluate physical and mechanical properties of a red latosol under no-tillage and subjected to simulated dynamic traffic in different surfaces conditions. For this, soil samples were collected, with dimensions of 0.2 × 0.2 × 0.3 m (height, width and length), in an area subjected to no-tillage in the last four years. Subsequently, samples were transported to the laboratory and subjected to different traffic levels in a simulator. Shortly after, a completely randomized experimental design was set up, in factorial 2 × 5, with two covers (with and without haystack) and five traffic levels (zero, one, two, four and eight run overs) applied by the simulator. Assessed physical properties were superficial settlement, soil density, compaction degree and pre-consolidation pressure. Results showed that superficial settlement, soil density and compaction degree were significantly influenced by soil cover and traffic intensity. Pre-consolidation was not affected by cover, and had higher values when subjected to more traffic intensity.

show abstract

Soil compressibility and least limiting water range of a constructed soil under cover crops after coal mining in Southern Brazil

Cited by 36 publications

References 38 publications

Sweet Sorghum Performance Affected by Soil Compaction and Sowing Time as a Second Crop in the Brazilian Cerrado

Sweet Sorghum Performance Affected by Soil Compaction and Sowing Time as a Second Crop in the Brazilian Cerrado

Intervalo Hídrico Ótimo Em Solo Construído Após Mineração De Carvão Em Diferentes Limites Críticos De Resistência À Penetração E Umidade

Simulated Traffic Dynamic Loading on Physical Properties of a Red Latosol under No-Tillage

Contact Info

Product

Resources

About