Estimation and evaluation of dynamic properties as indicators of changes on soil structure in sugarcane fields of Sao Paulo State – Brazil

Silva, Reginaldo Barboza da; Lanças, Kléber Pereira; Miranda, Estefanía; Silva, Francisca Alcivânia de Melo; Baio, Fábio Henrique Rojo

doi:10.1016/j.still.2008.10.018

Cited by 36 publications

(35 citation statements)

References 16 publications

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“…The increase in soil bulk density at a depth of 0.20 m is due to heavy machinery traffic during sugarcane planting and harvesting, mainly for the MCH system. These findings are in line with those of Hammad & Dawelbeit (2001) and Silva et al (2009), as the main cause of compaction in agricultural soils.…”

Section: Resultssupporting

confidence: 91%

Physical properties of a rhodic haplustox under two sugarcane harvesting systems

Machado

Telles²,

Filho

et al. 2010

Rev. Bras. Ciênc. Solo

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SUMMARYThis study had the purpose of evaluating the effects of two management types of sugarcane: harvesting of burnt cane (BCH) and mechanized harvesting of unburnt green cane (MCH), on some soil physical properties of a dystrophic Rhodic Haplustox. The data were then compared with results for the same soil type under native forest. A completely randomized design was used, with three treatments and 20 replications. The following characteristics were determined: organic matter, aggregate stability, soil bulk density, and porosity at depths of 0-0.20 m and soil penetration resistance. After 15 years of cultivation, there were some alterations in the soil under cane burnt before harvesting, evidenced by a drop in the weighted average diameter of stable aggregates in water and increased soil bulk density. Significant changes were also detected in total porosity and pore distribution under both harvesting systems. Critical values for penetration resistance were observed in the area under mechanized sugar cane harvesting, with a value of 4.5 MPa in the 40-55 cm layer. This value is considered high and could indicate compaction and restriction of root growth. Soil properties under the green cane (unburned) management system were closest to those of the soil under native forest.Index terms: Saccharum officinarum, soil bulk density, porosity, soil penetration resistance, soil aggregate stability.(

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Section: Resultssupporting

confidence: 91%

Physical properties of a rhodic haplustox under two sugarcane harvesting systems

Machado

Telles²,

Filho

et al. 2010

Rev. Bras. Ciênc. Solo

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“…In this respect, according to Silva et al (2009), the critical limits of the LLWR need to be adjusted for different soil and management conditions and species. For example, the critical limit for PR may need to be increased for Latosols under low mechanical movement, as in the case of sugarcane, for which the average renewal cycle in Brazil is currently five years (Brasil, 2010).…”

Section: Resultsmentioning

confidence: 99%

“…For example, the critical limit for PR may need to be increased for Latosols under low mechanical movement, as in the case of sugarcane, for which the average renewal cycle in Brazil is currently five years (Brasil, 2010). Furthermore, according to Silva et al (2009), although the soil in cane fields persists for long periods without tillage, accumulating historic stress, the bioporosity resulting from successive crops can provide preferential pathways for root growth, offsetting greater soil resistance. Table 5.…”

Section: Resultsmentioning

confidence: 99%

“…The LLWR concept is increasingly applied to sugarcane cultivation, and recent studies that modeled soil compaction in cane fields have helped to minimize the impacts of compaction on the structure of soils planted to sugarcane (Severiano et al, 2009;Silva et al, 2009;Cavalieri et al, 2011;Roque et al, 2011). However, there has been little study of the effects of soil structural degradation on the yield and quality for industrial processing of subsequent crops as well as its effect on the growth of sugarcane cultivars with different maturation cycles.…”

Section: Introductionmentioning

confidence: 99%

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Least limiting water range in assessing compaction in a Brazilian Cerrado latosol growing sugarcane

Gonçalves

Severiano

Silva

et al. 2014

Rev. Bras. Ciênc. Solo

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SUMMARYIn the south-central region of Brazil, there is a trend toward reducing the sugarcane inter-harvest period and increasing traffic of heavy harvesting machinery on soil with high water content, which may intensify the compaction process. In this study, we assessed the structural changes of a distroferric Red Latosol (Oxisol) by monitoring soil water content as a function of the Least Limiting Water Range (LLWR) and quantified its effects on the crop yield and industrial quality of the first ratoon crop of sugarcane cultivars with different maturation cycles. Three cultivars were subjected to four levels of soil compaction brought about by a differing number of passes of a farm tractor (T 0 = soil not trafficked, T 2 = 2 passes, T 10 = 10 passes, and T 20 = 20 passes of the tractor in the same place) in a 3 × 4 factorial arrangement with three replications. The deleterious effects on the soil structure from the farm machinery traffic were limited to the surface layer (0-10 cm) of the interrow area of the ratoon crop. The LLWR dropped to nearly zero after 20 tractor passes between the cane rows. We detected differences among the cultivars studied; cultivar RB 86-7515 stood out for its industrial processing quality, regardless of the level of soil compaction. Monitoring of soil moisture in the crop showed exposure to water stress conditions, although soil compaction did not affect the production variables of the sugarcane cultivars. We thus conclude that the absence of traffic on the plant row maintained suitable soil conditions for Na região centro-sul do Brasil, há a tendência de redução do período de entressafra canavieira, condicionando tráfego de máquinas para colheita em condições de elevados conteúdos de água do solo, o que pode contribuir para a intensificação do processo de compactação. Os objetivos deste estudo foram avaliar as alterações estruturais de um Latossolo Vermelho distroférrico por meio do monitoramento do conteúdo de água do solo em razão do Intervalo Hídrico Ótimo (IHO) e quantificar seus efeitos sobre o rendimento agrícola e o industrial da primeira soqueira de cultivares de cana-de-açúcar, com diferentes ciclos de maturação. Foram avaliados três cultivares de cana-de-açúcar (RB 83-5054; RB 84-5210; e RB 86-7515) submetidos a quatro níveis de compactação do solo, atingidos pelo número de passadas de um trator agrícola, correspondendo a T 0 = solo não trafegado; T 2 = 2; T 10 = 10; e T 20 = 20 passadas do trator no mesmo lugar, em esquema fatorial 3 × 4, com três repetições. Os efeitos deletérios causados na estrutura do solo pelo tráfego de maquinário agrícola ficaram limitados à entrelinha de cultivo das soqueiras, na camada superficial do solo. O IHO foi reduzido a valores próximos de zero com 20 passadas do trator, nas entrelinhas de cultivo da cana-de-açúcar. Foi detectada diferença entre os cultivares estudados, com destaque para o RB 86-7515, quanto à qualidade tecnológica da matéria-prima, independentemente dos níveis de compactação do solo a que estiveram sujeitos. O monitoram...

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“…O tráfego em áreas cultivadas com eucalipto torna-se, portanto, preocupante devido à possibilidade de disseminação da compactação (DIAS JUNIOR et al, 2005, principalmente quando esse tráfego é realizado em condições inadequadas de umidade e por vários ciclos da exploração florestal (RAPER, 2005;HANZA;ANDERSON, 2005;SILVA et al, , 2009). …”

Section: Introductionunclassified

Avaliação da intensidade de tráfego e carga de um forwarder sobre a compactação de um Latossolo Vermelho-Amarelo

Silva

Dias

Leite³

2011

Rev. Árvore

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RESUMO -A operação de baldeio florestal está relacionada ao uso de máquinas, as quais trafegam numa mesma linha várias vezes ou aleatoriamente, o que pode causar compactação do solo, alterando o meio onde o sistema radicular se desenvolve e reduzindo a produtividade. Além do número de passadas, a carga de madeira transportada pode afetar a compactação do solo quando as pressões aplicadas pelas máquinas excederem a capacidade de suporte de carga desse solo. Os objetivos deste estudo foram: a) propor modelo de capacidade de suporte de carga para Latossolo Vermelho-Amarelo no Município de Santa Maria de Itabira, MG, em razão da pressão de pré-consolidação e da umidade; e b) determinar, com o uso deste modelo, o efeito da intensidade de tráfego e da carga de Forwarder sobre a estrutura do solo. Para a obtenção dos modelos de capacidade de suporte de carga, 20 amostras indeformadas de solo foram coletadas nas profundidades de 0-3 e 10-13 cm no local onde não houve tráfego. Foram também coletadas 10 amostras indeformadas em cada profundidade, onde o Forwarder trafegou duas, quatro e oito vezes e no local onde o Forwarder trafegou quatro vezes com 1/3 (3 m 3 ), 2/3 (6 m 3 ) e 3/3 (9 m 3 ) de sua carga. As amostras indeformadas foram utilizadas nos ensaios de compressão uniaxial. Determinaram-se também a textura, o teor de matéria orgânica e a densidade de partículas e densidade dos solos. O modelo de capacidade de suporte de carga do LVA é expresso pela equação σ p = 10 (2,71 -1,36 U) . Todas as intensidades de tráfego causaram compactação no solo nas duas profundidades estudadas, sendo quatro passadas as que causaram maior compactação do solo, e, à medida que a carga do Forwarder aumentou, a compactação do solo também aumentou nas duas profundidades. Palavras-chave: Compactação do solo, Pressão de pré-consolidação e Mecanização florestal. EVALUATION OF TRAFFIC INTENSITY AND LOAD OF A FORWARDER ON STRUCTURE OF A RED-YELLOW LATOSOL ABSTRACT -The operation of forest traffic is related to use of machines that

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Estimation and evaluation of dynamic properties as indicators of changes on soil structure in sugarcane fields of Sao Paulo State – Brazil

Cited by 36 publications

References 16 publications

Physical properties of a rhodic haplustox under two sugarcane harvesting systems

Physical properties of a rhodic haplustox under two sugarcane harvesting systems

Least limiting water range in assessing compaction in a Brazilian Cerrado latosol growing sugarcane

Avaliação da intensidade de tráfego e carga de um forwarder sobre a compactação de um Latossolo Vermelho-Amarelo

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