Load-bearing capacity of a red-yellow latosol cultivated with coffee plants subjected to different weed managements

Pais, Paula Sant'Anna Moreira; Dias, Moacir de Souza; Dias, Adriana Cristina; Iori, Piero; Guimarães, Paulo Tácito Gontíjo; Santos, Gislene Aparecida dos

doi:10.1590/s1413-70542013000200005

Cited by 8 publications

(8 citation statements)

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“…It has been used as an indicator of the soil mechanical strength and load bearing capacity to estimate more accurately the risk of soil compaction in various studies regarding forest harvest operations (Dias Junior et al, 2008Martins et al, 2013;Leite, 2010). Soil precompression stress and hence soil load bearing capacity decrease exponentially with increase in soil moisture (Lima et al, 2006;Mosaddeghi et al, 2006;Dias Junior et al, 2007;Ajayi et al, 2013); making these soil properties specially relevant in management strategies aiming to minimize the risk of additional soil compaction caused by traffic with farm machinery (Dias Junior et al, 2005;Pais et al, 2013;Severiano et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Soil compaction caused by harvest and logging operations in eucalyptus forests in coarse-textured soils from northeastern Brazil

et al. 2017

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Planted forests occupy more than 6.5 million ha in Brazil, where harvest and logging operations are performed with increasingly heavier machinery, increasing the risk of soil compaction. Soil compaction can be avoided if soil load bearing capacity is not exceeded, what makes it important to assess both the soil strength and the impact of different operations. The aim of this study was to evaluate the load bearing capacity of some coarse textured soils (two Hapludult and one Haplorthod) in two soil horizons (BA and B), from northeastern Brazil; and to assess the impact of harvest and logging operations performed with harvester and forwarder. Although the Haplorthod presented higher load bearing capacity in both the BA horizon (for the whole moisture range) and the B horizon (for higher water contents), it suffered the greatest soil compaction. Traffic with the harvester resulted in soil compaction in both the BA and the B horizons, but the increase in bulk density was higher on the later, reaching 18.7% in the Haplorthod. The forwarder traffic intensity and the presence of plant residue cover significantly affected the occurrence of soil compaction. In the BA horizon, the increase in soil bulk density for different forwarder traffic intensities was 3 passes ~ 6 passes < 12 passes ~ 16 passes. The increase in bulk density was higher in the Haplorthod, reaching 32% after 16 forwarder passes over bare soil. Significant linear regressions were obtained from the number of forwarder passes and the increase in bulk density. Index terms:Harvester; forwarder; precompression stress; soil load bearing capacity. RESUMOAs florestas plantadas ocupam mais de 6,5 milhões de ha no Brasil, nas quais as operações de colheita e baldeio são realizadas com maquinário cada vez mais robusto, o que aumenta o risco de compactação do solo. A compactação do solo pode ser evitada se a sua capacidade de suporte de carga não for excedida, o que torna importante a avaliação tanto da resistência mecânica do solo quanto o impacto de diferentes operações. O objetivo deste estudo foi avaliar a capacidade de suporte de carga de solos de textura grosseira (dois Hapludult e um Haplorthod) em dois horizontes (BA e B) do Nordeste do Brasil; além de avaliar o impacto das operações de colheita e baldeio de madeira realizadas com harvester e forwarder. Apesar de o Haplorthod ter apresentado a maior capacidade de suporte de carga no horizonte BA (para toda a faixa de umidade) e no horizonte B (para maiores umidades) ele foi a classe de solo que apresentou maior compactação. O tráfego com o harvester resultou em compactação tanto no horizonte BA quanto no B, mas o aumento da densidade do solo foi maior no último, chegando a 18,7% no Haplorthod. A intensidade de tráfego do forwarder e a presença de resíduos de plantas na superfície do solo afetaram significativamente a ocorrência de compactação do solo. No horizonte BA, o aumento da densidade do solo em decorrência da intensidade de tráfego do forwarder foi de 3 passadas ~ 6 passadas < 12 passadas ~ 1...

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Section: Introductionmentioning

confidence: 99%

Soil compaction caused by harvest and logging operations in eucalyptus forests in coarse-textured soils from northeastern Brazil

et al. 2017

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“…In tropical soils planted with Eucalyptus forests, soil load‐bearing capacity models have been used in the past few years to evaluate the amount of soil compaction during harvest operations in relation to differences in soil type, soil depth, climatic season, the kind of machinery used, traffic intensity and the effect of slash over the soil surface (Andrade et al., ; Martins, Dias Junior, Carvalho, Silva, & Fonseca, ; Silva, Dias Junior, & Leite, , ). Management strategies aiming to prevent soil compaction should take into account the soil load‐bearing capacity model, as it quantifies the soil precompression stress for a given water content, indicating the maximum load that the soil could withstand without suffering additional compaction in a given situation (Araujo Junior, Dias Junior, Guimarães, & Alcântara, ; Martins et al., ; Pacheco & Cantalice, ; Pais et al., ; Pires, Dias Junior, Rocha, Araujo Junior, & Carvalho, ). Although the causes of soil compaction and several coping strategies are well known, knowledge about the impact of different harvest and logging operations is still incomplete (Cambi et al., ), especially in relation to tropical coarse‐textured soils.…”

Section: Introductionmentioning

confidence: 99%

Soil compaction caused by harvesting, skidding and wood processing in eucalyptus forests on coarse‐textured tropical soils

Tassinari¹,

Andrade²,

Dias³

et al. 2019

Soil Use and Management

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Eucalyptus forests play a major role in the world economy, providing raw materials for different purposes. In planted forests, harvest operations performed by heavy machinery may cause severe soil compaction. This study aimed to evaluate the impact of a full‐tree harvesting system in planted eucalyptus forests from Northeastern Brazil. Different soils were evaluated (two Hapludults and one Haplorthod) in two horizons (BA and Bt). We tested different equipment, namely feller buncher, skidder (with traffic intensities of 3, 6, 12 and 16 passes), flail (at different ground‐contact points), grapple saw and loader. The soil physical attributes reflected not only the impact of equipment traffic but also the intrinsic differences between the soils. Bulk density (ranging from 1.36 to 1.80 t m−3 after trafficking) related well to soil class and horizon. Precompression stress (ranging from 203 to 430 kPa) and degree of compaction (76%–94%) following trafficking were well correlated, while increase in bulk density (reaching a maximum of 20%) related more strongly to soil moisture. A contingency table was constructed with the number of compacted samples and further examined by correspondence analysis. Compaction varied according to soil, horizon and equipment, indicating that machine–soil interactions are very specific and demand detailed research under different conditions. The Haplorthod experienced the greatest amount of compaction, whereas the Hapludult‐2 was more resistant (60% and 25% of compacted samples, respectively). The grapple saw and the skidder at higher traffic intensities (12 and 16 passes) exerted the highest mechanical impacts (81% and 67% of compacted samples, respectively).

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“…In Brazil, soil compression curves have been widely used to evaluate soil response in reference to different soil properties and management practices, such as tillage systems (Silva et al, 2002a,b;Veiga et al, 2007), grazed pasture and eucalyptus forest (Suzuki et al, 2015), orange orchard (Fidalski et al, 2015), Oxisols with different textures (Severiano et al, 2011), sugar cane crop (Pacheco and Cantalice, 2011;Pereira et al, 2015), pastures (Pires et al, 2012), coffee crop (Araujo-Junior et al, 2011;Pais et al, 2013), and agroforestry systems (Watanabe et al, 2016). Other studies have focused on investigating the methods applied in determination of σ p and pedotransfer functions (Dias Junior and Pierce, 1996;Imhoff et al, 2004;Cavalieri et al, 2008;Suzuki et al, 2008;Severiano et al, 2011;Silva and Lima, 2016).…”

Section: Introductionmentioning

confidence: 99%

Soil Compressibility under Irrigated Perennial and Annual Crops in a Semi-Arid Environment

Watanabe

Figueiredo

Silva

et al. 2017

Rev. Bras. Ciênc. Solo

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ABSTRACT:In irrigated soils, a continuous state of high moisture reduces resistance of the soil to applied external forces, favouring compaction. The aim of this study was to evaluate the susceptibility to compaction of developed calcareous soils in irrigated annual and perennial cropping systems of the Apodi Plateau, located in the Brazilian semi-arid region. Four areas of irrigated crops were evaluated: banana after two (B2) and 15 (B15) years cultivation, pasture (P), and a corn and beans succession (MB), as well as the reference areas for soil quality and corresponding natural vegetation (NVB2, NVB15, NVP and NVMB). Samples were collected at layers of 0.00-0.10 and 0.20-0.30 m; and for B2 and B15, samples were collected in the row and inter-row spaces. The following properties were determined: degree of compactness (DC), preconsolidation pressure (σ p ), compression index (Cc), maximum density (ρ max ), critical water content (WC crit ), total organic carbon (TOC) and carbon of light organic matter (C lom ). Mean values were compared by the t-test at 5, 10, 15 and 20 % probability. An increase was seen in DC at a layer of 0.20-0.30 m in MB (p<0.15), showing the deleterious effects of preparing the soil by ploughing and chiselling, together with the cumulative traffic of heavy machinery. The TOC had a greater influence on ρ max than the stocks of C lom . Irrigation caused a reduction in Cc, and there was no effect on σ p at field capacity. The planting rows showed different behaviour for Cc, ρ max , and WC crit, , and in general the physical properties displayed better conditions than the inter-row spaces. Values for σ p and Cc showed that agricultural soils display greater load-bearing capacity and are less susceptible to compaction in relation to soils under natural vegetation.

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Load-bearing capacity of a red-yellow latosol cultivated with coffee plants subjected to different weed managements

Cited by 8 publications

References 13 publications

Soil compaction caused by harvest and logging operations in eucalyptus forests in coarse-textured soils from northeastern Brazil

Soil compaction caused by harvest and logging operations in eucalyptus forests in coarse-textured soils from northeastern Brazil

Soil compaction caused by harvesting, skidding and wood processing in eucalyptus forests on coarse‐textured tropical soils

Soil Compressibility under Irrigated Perennial and Annual Crops in a Semi-Arid Environment

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