Indicadores de qualidade de Latossolo relacionados à degradação de pastagens

Lisbôa, Fabrício Marinho; Donagemma, G. K.; Burak, Diego Lang; Passos, Renato Ribeiro; Mendonça, Eduardo de Sá

doi:10.1590/s0100-204x2016000900018

Cited by 17 publications

(26 citation statements)

References 22 publications

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“…Factors such as species, climate (water, light, and temperature), fertility and physical texture of soil, forage cycle, harvest management, animal monitoring, and others may affect the chemical composition and thus the availability of food energy (Leonel et al, 2009;Lisbôa et al, 2016). The production of dry matter and satisfactory rates of crude protein and acceptability by the animals are important factors in the selection of a cultivar for pasture sowing (Maranhão et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Production and quality of Urochloa decumbens (stapf) r.d. webster forage co-related to the physical and chemical properties of the soil

2017

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RESUMOSubmetido em 27/12/2014 Frequently degraded pastureland characterized by low soil fertility and compacted surface is the basic environment of Brazilian livestock. The physical and chemical characterization of soil and its co-relationship with forage production are determining factors for performance of animals raised on pasture. The objective was to analyze the forage production of Urochloa decumbens grass correlated, linearly and spatially, with physical and chemical attributes of a savannah soil in Selvíria -MS, Brazil. A geostatistical web was introduced for the collection of soil and plant data, with 120 sampling sites within an area of 56.09 ha. The descriptive analysis of the data was undertaken and linear co-relationships, both simple and multiple, were established between plant and soil properties. Semivariograms were modeled and their respective krigings and cross-validations obtained, coupled to co-krigings (plant and soil). Production of dry matter and crude protein rates of U. decumbens may be estimated by regressions and the mechanical resistance to penetration and gravimetric humidity of the soil evaluated. Since organic matter rate and the gravimetric humidity of the soil are corelated spatially with the rate of crude protein of U. decumbens, they are the best factors to calculate or increase the forage crude protein rate.Key words: geoestatistics; precision agriculture; soil management and conservation; spatial variability. Flávio Carlos Dalchiavon 1 *, Rafael Montanari 2 , Marcelo Andreotti 2 10.1590/0034-737X201764030013 Produção e qualidade de forragem de Urochloa decumbens (stapf) r.d.webster correlacionada com atributos físico-químicos do soloA pecuária brasileira está fundamentada em pastagens, muitas vezes degradadas, e que tem como indicativos desta degradação, a queda de fertilidade do solo e a compactação superficial do solo. Portanto, a caracterização físico-química do solo e a sua correlação com a produção de forragem são determinantes para o desempenho animal em pasto. No ano de 2009, no município de Selvíria -MS, Brasil, em condições de Cerrado, objetivou-se analisar os atributos produtivos de Urochloa decumbens correlacionado-os, linear e espacialmente, com atributos físico e químicos de um solo de Cerrado. Foi instalada uma malha geoestatística para a coleta de dados do solo e da planta, com 120 pontos amostrais, numa área de 56,09 ha. Realizou-se a análise descritiva dos dados, estabelecendo-se correlações lineares, simples e múltiplas, entre os atributos da planta e os do solo. Foram modelados semivariogramas, obtendo-se as respectivas krigagens e validações cruzadas. Também foram estabelecidas as cokrigagens de interesse (planta x solo). Tanto a produção de matéria seca quanto os teores de proteína bruta de U. decumbens podem ser estimados por meio de regressões, avaliando a resistência mecânica à penetração e umidade gravimétrica do solo. Os teores de matéria orgânica e a umidade gravimétrica do solo correlacionam-se espacialmente com os teores de proteína bru...

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Section: Introductionmentioning

confidence: 99%

Production and quality of Urochloa decumbens (stapf) r.d. webster forage co-related to the physical and chemical properties of the soil

2017

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“…A análise dos atributos do solo tem sido amplamente utilizada em estudos que buscam avaliar a condição ambiental ou a saúde do solo (Yada et al, 2015;Lima et al, 2017;Freitas et al, 2017), sendo descritos na forma de indicadores de qualidade, os quais se tratam de propriedades mensuráveis que indicam a capacidade do solo de sustentar e promover a qualidade ambiental (Lisboa et al, 2016;Stumpf et al, 2016).…”

Section: Introductionunclassified

“…Os indicadores físicos, químicos e biológicos devem ser analisados em conjunto, permitindo uma maior representatividade de quais as características apresentadas pela área de estudo, uma vez que os indicadores físicos fornecem informações sobre os processos hidrológicos e estabilidade do solo (Lisboa et al, 2016), enquanto os indicadores químicos refletem a fertilidade (Freitas et al, 2017). Já os indicadores biológicos, indicam a capacidade de resiliência nos projetos de recuperação, e devido sua alta sensibilidade ao manejo adotado no solo, permitem inferir sobre a necessidade de intervenções antrópicas para promover a recuperação das áreas degradadas (Fidelis et al, 2016).…”

Section: Introductionunclassified

Avaliação Da Qualidade De Solo De Área De Lixão Desativado: Uma Revisão De Literatura

Silva

Melloni

et al. 2020

Rev. Bras. Geog. Fis.

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Os lixões são caracterizados pela simples disposição final de resíduos sólidos sobre o solo sem qualquer medida de controle ambiental, impactando negativamente o meio em função da geração de gases, chorumes e outros subprodutos da degradação do material orgânico e inorgânico. Desde 2010 o Brasil tem buscado a desativação dos lixões. No entanto, o encerramento das atividades dos lixões resulta em áreas que sofreram degradação ambiental e necessitam de recuperação. O solo é considerado o principal desafio nos projetos de recuperação destas áreas, uma vez que seus atributos químicos, físicos e biológicos são fortemente afetados. O presente estudo teve como objetivo descrever sobre a utilização de indicadores de qualidade do solo, já estabelecida para situações agrícolas, em áreas de lixão desativado. Para tal, foi realizada uma revisão de literatura baseada em materiais científicos, legislações e documentos sobre gerenciamento dos resíduos sólidos publicadas sobre este assunto no período de 2012 a 2018. O emprego de indicadores de qualidade de solo em lixão desativado tem se tornado cada vez mais comum. No entanto, ainda são raros os estudos que combinam o emprego de indicadores físicos, químicos e biológicos na avaliação da condição ambiental destas áreas. A avaliação de áreas de lixão desativado por meio de um conjunto de indicadores torna-se essencial no processo de estabelecimento de projetos específicos de recuperação destas áreas. Evaluation of the quality of soil from disposal of disposal of land: a literature review A B S T R A C TThe dumps are characterized by simple final disposal of solid waste on the soil without any environmental control measure, impacting negatively the environment in function to the generation of gases, slurries and other by-products of organic and inorganic material degradation. Since 2010 Brazil has sought the disabling of drumps. However, the closure of the activities of the dumps results in areas that have suffered environmental degradation and need recovery. The soil is considered the main challenge in recovery projects in these areas, since their chemical, physical and biological attributes are strongly affected. This study aimed to describe the use of soil quality indicators for the evaluation of environmental condition in the disabled dump area. For this, a literature review was carried out based in scientific materials, legislation and documents about solid waste management published on this subject in the period from 2012 to 2018. The use of soil quality indicators in dump disabled area has become increasingly common. However, studies that combine physical, chemical and biological indicators in the assessment of the environmental condition of these areas are still rare. The assessment of disable dump areas by a set of indicators becomes essential in the process of establishing specific recovery projects in these areas.Keywords: Solid Waste Management, Final Disposal, Soil health.

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“…Few studies have been conducted on strategies to mitigate the pastures degradation of the Vale do Rio Doce region (Baruqui et al, 1985;Favero et al, 2008;Lima et al, 2008;Rocha Junior et al, 2014a;Rocha Junior et al, 2014b), thus increasing the environment, economic and social damage. To reverse the process of degradation, it is important to develop low cost and simple techniques to assess the impact of grassland management on soil quality, which can be easily used by qualified extension workers and producers (Lisbôa et al, 2016). However, the costs of monitoring the management systems may be high and the success of the methods, in general, may be hard to evaluate (Ruiz-Jaen and Aide, 2005;Rodrigues et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…However, the costs of monitoring the management systems may be high and the success of the methods, in general, may be hard to evaluate (Ruiz-Jaen and Aide, 2005;Rodrigues et al, 2009). One of the most used techniques to evaluate the impact of soil management has been the monitoring of some attributes of the soil and the establishment of soil quality indexes (Hulugalle et al, 1999;Islam and Weil, 2000;Andrews and Carroll, 2000;Passos et al, 2015;Bertosi et al, 2016;Lisbôa et al, 2016). However, assessment of the indexes or soil quality levels is not a simple task, representing a high cost for laboratory analyses.…”

Section: Introductionmentioning

confidence: 99%

Field-based quality indicators in degraded pasture of the Atlantic forest biome

Rocha¹,

Donagemma²,

Andrade³

et al. 2017

Aust J Crop Sci

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Developing techniques that are easily accessible to producers and extension agents would facilitate the assessment of pasture degradation in rural areas. The objective of this work was to evaluate the sensitivity of field-based indicators of soil quality at different levels of degraded pastures, validate these indicators with those determined in laboratory. Six areas were chosen: four areas of pastures in different gradients of degradation visually assessed (Degraded Pasture 1 -P 1 ; Degraded Pasture 2 -P 2 ; Degraded Pasture 3 -P 3 ; and Degraded Pasture 4 -P 4 ), in descending order of degradation; an area of Capoeira (natural vegetation of soil recovery); and a secondary Forest used as reference. The soil under all areas was an Ultisol clayey, and field determinations used were: soil coverage rate (Soil Cov. Rt ), depth of the root system (D RS ) and "A horizon" thickness. Laboratory determinations were: soil density, total porosity (Tp), macroporosity (Ma), microporosity (Mi), Ca , organic carbon (OC), base (BS) and aluminum saturation (AS). Also, the organic matter compartments such as particulate organic matter (POM), particulate organic carbon and carbon fraction associated with soil minerals were determined. Soil quality ranking were assigned to the different areas, and orthogonal contrasts were made to compare the stages of degradation. Subsequently, linear correlations were adjusted to test whether there were significant differences for the field and laboratory indicators among the areas of study. Soil quality ranking assigned represented the levels of degraded pasture visually observed in field, therefore allowing correlations with field indicators "A horizon" thickness (Rainy season r =0.71 and Dry season r =0.91) and D RS (Rainy season r =0.81 and dry season r =0.58). Similar correlations were found when the Soil Cov. Rt was used, where correlations were observed with the "A horizon" thickness (Rainy season r =0.61 and Dry season r =0.75) and D RS (Rainy season r=0.76 and Dry season r =0.84). The field and laboratory determinations showed statistical differences between study areas, indicating that they were sensitive to levels of degradation. Through field determinations, it was possible to separate four groups of degradation: reference (Forest), low degradation (P 4 and P 3 ), under recovery (Capoeira) and high degradation (P 1 and P 2 ). The easily determined field-based quality indicators showed significant correlations with the laboratory values: BS, AS, Ma and POM, especially on the 0-5 cm surface layer, showing small variation between sampling periods and indicating the possibility of using these indicators to differentiate levels of degraded pastures with good accuracy.

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Indicadores de qualidade de Latossolo relacionados à degradação de pastagens

Cited by 17 publications

References 22 publications

Production and quality of Urochloa decumbens (stapf) r.d. webster forage co-related to the physical and chemical properties of the soil

Production and quality of Urochloa decumbens (stapf) r.d. webster forage co-related to the physical and chemical properties of the soil

Avaliação Da Qualidade De Solo De Área De Lixão Desativado: Uma Revisão De Literatura

Field-based quality indicators in degraded pasture of the Atlantic forest biome

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