Espacialização do intervalo hídrico ótimo de um Latossolo Vermelho em dois sistemas de colheita de cana-de-açúcar

Araújo, Fernando Silva; Souza, Zigomar Menezes de; Souza, Gustavo Soares de; Matsura, Edson Eiji; Barbosa, Ronny Sobreira

doi:10.1590/s0100-204x2013000600011

Cited by 9 publications

(15 citation statements)

References 25 publications

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“…These results are similar to those found by Araújo et al (2013) who studied harvesting systems and LLWR in Oxisol under sugarcane on areas with mechanized harvest and found CBD =1.39 Mg m -3 for LLWR =0. The CBD values were higher when compared to the results observed by Moreira et al (2012) who evaluated LLWR in an Oxisol.…”

Section: The Least Limiting Water Range (Llwr)supporting

confidence: 90%

“…In all treatments the LLWR had RP as the lower limiting point. In a similar study on the same soil Araújo et al (2013) observed critical density at 1.39 Mg m -3 with null LLWR. This study aimed to evaluate soil physical attributes and the least limiting water range, and to relate them to the effects caused by the in-field wheel traffic on sugarcane plantations with mechanized harvest.…”

Section: Introductionmentioning

confidence: 56%

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Physical attributes and limiting water range as soil quality indicators after mechanical harvesting of sugarcane

Filho¹,

Souza²,

Souza³

et al. 2017

Aust J Crop Sci

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Monitoring soil physical quality in areas cultivated with sugarcane has become a key management practice of this crop. It is due to the in-field traffic of heavy machines, implements, high mass harvesters and transhipments in the area have caused changes in soil structure and promoted the fall of the crop yield.. This study evaluated physical attributes of soil and the least limiting water range to assess the effects caused by wheel traffic in areas with mechanized harvest of sugarcane. The design was completely randomized in a factorial 2 x 2 x 4, which were evaluated two areas of mechanical harvesting: 1 -Six years (T 1 ); 2 -Eighteen years of cultivation (T 2 ); Two sampling sites: 1 -Canteiro; 2 -Planting line; Four layers of soil sampled (0.00 to 0.10, 0.10-0.20, 0.20-0.30 and 0.30-0.40 m) with 4 repetitions. We evaluated bulk density (BD), mechanical resistance to penetration (RP), water content in the soil (WCS), macroporosity (Ma), microporosity (Mi), total porosity (TP), water retention curve, the least limiting water range (LLWR) and soil organic carbon (SOC). We observed that the area with mechanical harvest system after three crop cycles produced a high loadbearing capacity and high SOC. The same area also demonstrated high Ma and LLWR, and low BD and RP levels in the rows. The LLWR levels were high as well in the area with one cane cycle but decreased as the number of harvest cycles increased. In the areas with one and three cycles the critical bulk density (CBD) ranged between 1.40-1.50 Mg m -3 and 1.24-1.28 Mg m -3 respectively, while the LLWR was zero (LLWR = 0) with the limiting RP between 2.0 and 3.5 Mpa. The physical attributes are changed by heavy machinery traffic in the cane fields, but the effects of these changes are minimized when several crop cycles are conducted in the same area.

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Section: The Least Limiting Water Range (Llwr)supporting

confidence: 90%

Section: Introductionmentioning

confidence: 56%

Physical attributes and limiting water range as soil quality indicators after mechanical harvesting of sugarcane

Filho¹,

Souza²,

Souza³

et al. 2017

Aust J Crop Sci

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“…Podem-se verificar baixos valores de Ma em ambos os sistemas, inferiores a 0,10 m 3 m -3 , mínimo adequado para as trocas líquidas e gasosas entre o ambiente externo e o solo, e considerado crítico para o crescimento das raízes na maioria das culturas como enfatizam Centurion et al (2007) e Rossetti e Centurion (2013). Araújo et al (2013), ao avaliarem dois sistemas de colheita de cana-de-açúcar em um Latossolo Vermelho Distrófico sob preparo convencional, verificaram valores de Ma semelhantes nas camadas avaliadas, ou seja, inferiores a 0,10 m 3 m -3 ; porém com valores de Mi acima de 0,40 m 3 m -3 , o que pode indicar maior compactação nesta área.…”

Section: Resultsunclassified

Atributos Físicos Do Solo Cultivado Com Cana-De-Açúcar Em Função Do Preparo E Época De Amostragem

Arcoverde¹,

Souza

Suárez³

et al. 2019

Rev. Agric. Neotrop.

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Objetivou-se avaliar os atributos físicos de um Latossolo Vermelho Distroférrico cultivado com cana-planta em função do preparo e época de amostragem. O trabalho foi conduzido na FAECA-UFGD, em um Latossolo Vermelho Distroférrico, onde a área experimental foi dividida em duas subáreas, compostas pelo sistema plantio direto (SPD) e preparo reduzido (PR). Em cada tipo de preparo foram cultivadas oito cultivares de cana-de-açúcar em delineamento inteiramente casualizado, com quatro repetições. Nas unidades experimentais, amostras com estrutura preservada foram coletadas após o preparo do solo (45 DAP) e após os tratos culturais (180 DAP), para determinação da densidade do solo, porosidade total, macroporosidade, microporosidade e resistência mecânica do solo à penetração nas camadas de 0,00-0,10 e 0,10-0,20 m. O SPD apresentou maior densidade e resistência do solo à penetração na camada de 0,00-0,10 m, enquanto os demais atributos físicos não foram influenciados pelo preparo do solo. Houve aumento da densidade do solo, porosidade total, microporosidade e resistência do solo à penetração e diminuição da macroporosidade nas camadas de 0,00-0,10 e 0,10-0,20 m após o tráfego de máquinas para tratos culturais.

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“…Soil compaction may increase through mechanized harvesting procedures, while soil preparation operations during field renewal eliminate soil stress (Severiano et al, 2010). Therefore, mitigation of soil compaction is fundamental to maintain the productivity and longevity of sugarcane fields (Braunbeck & Oliveira, 2006;Araújo et al, 2013), avoiding yield loss from increased soil bulk density and penetration resistance arising from traffic at harvest (Braunack et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

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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Espacialização do intervalo hídrico ótimo de um Latossolo Vermelho em dois sistemas de colheita de cana-de-açúcar

Cited by 9 publications

References 25 publications

Physical attributes and limiting water range as soil quality indicators after mechanical harvesting of sugarcane

Physical attributes and limiting water range as soil quality indicators after mechanical harvesting of sugarcane

Atributos Físicos Do Solo Cultivado Com Cana-De-Açúcar Em Função Do Preparo E Época De Amostragem

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

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