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Activity of soil microbial biomass altered by land use in the southwestern Amazon Bragantia
Mazzetto,André Mancebo; Cerri,Carlos Eduardo Pellegrino; Feigl,Brigitte Josefine; Cerri,Carlos Clemente.
ABSTRACT The increasing demand for food creates environmental problems, mainly due to the removal of native vegetation cover for agriculture expansion in Brazil. These changes in land use lead to changes in the soil organic matter dynamics. Microorganisms represent the most biological and physiological diversity in soil, as well as are responsible for more than 95% of the decomposition and nutrient cycling processes. The objective in this research was to check if there is difference of patterns in activity of soil microbial biomass under varied natural vegetation, pastures in use and agricultural systems recently established. The area covered by this study corresponds to the states of Rondônia and Mato Grosso. Canonical variate analysis was used in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Microbial biomass; Basal respiration; Amazon.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000100079
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Atributos biológicos do solo em diferentes sistemas de manejo no município de Ponta Porã, MS. Infoteca-e
SILVA, I. M. de O. da; TOMAZI, M.; JUNQUEIRA, P. H.; SALTON, J. C.; COMUNELLO, E.; SOUZA, M. H. da S..
bitstream/item/189752/1/ORAL4.pdf
Tipo: Outras publicações técnicas (INFOTECA-E) Palavras-chave: Biomassa microbiana; Respiração basal; Sistemas integrados; Basal respiration; Integrated systems; Microbial biomass.
Ano: 2018 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1103018
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Avaliação da comunidade microbiana de um solo tropical sob pastagem. Repositório Alice
BRIGANTE, J.; PASINI, A.; GOGO, J. C.; PRIMAVESI, O..
Tipo: Separatas Palavras-chave: Basal respiration; Native forest.; Bactéria; Fungo.; Fungi..
Ano: 2000 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/45300
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Biomassa microbiana e estoques de C e N do solo em diferentes sistemas de manejo, no Cerrado do Estado do Piauí - DOI: 10.4025/actasciagron.v31i3.687 Agronomy
Matias, Maria da Conceição Bezerra da Silva; UFPI; Salviano, Adeodato Ari Cavalcante; UFPI; Leite, Luiz Fernando de Carvalho; EMBRAPA; Araújo, Ademir Sérgio Ferreira de; UFPI.
O objetivo do trabalho foi verificar os efeitos de diferentes sistemas de manejo sobre a biomassa microbiana e os estoques totais de carbono orgânico e nitrogênio em um Latossolo Amarelo. Os sistemas de manejos avaliados foram: plantio direto (PD), preparo convencional (PC), além de uma área recém-desmatada (ARD) e uma com vegetação nativa (AVN). As amostras de solo foram coletadas nas profundidades de 0-5, 5-10 e 10-20 cm. Nessas amostras, foram determinados os teores e estoques totais de C e N, a respiração basal, o carbono da biomassa microbiana (Cmic) e os quocientes microbiano (Cmic/COT) e metabólico (qCO2). A área sob plantio direto apresentou maiores teores de C e N, além de estoques de C na superfície do solo. Para os estoques de N, não houve...
Palavras-chave: 5.01.00.00-9 Agronomia plantio direto; Biomassa microbiana; Respiração basal Microbiologia e Bioquímica do Solo no-tillage; Microbial biomass; Basal respiration.
Ano: 2009 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/687
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LONG-TERM EFFECTS OF SWINE wastewater AND MINERAL FERTILIZER ASSOCIATION ON SOIL MICROBIOTA REA
MOURA,ALEXANDRE C. DE; SAMPAIO,SILVIO C.; REMOR,MARCELO B.; SILVA,ADRIANA P. DA; PEREIRA,PAMELA A. M..
ABSTRACT Swine wastewater (SW) application in agricultural soils may affect its microbial community in a long term. The objective of this study was to evaluate prospective changes in soil bacterial community after eight years continuous application of swine wastewater. The wastewater doses tested were 0; 100; 200 and 300 m3 ha-1, being applied from the beginning of the experiment and with or without recommended fertilization. Three soil samples were taken from each plot for determinations of basal respiration, microbial biomass and metabolic quotient. We also performed DGGE analysis and made a correlation between soil chemical conditions and microbial activity. Microbial community underwent significant structural changes from swine wastewater applications....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pig manure; Soil bacterial diversity; Water reuse; Soil microbial biomass; Basal respiration.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000200318
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Microbial biomass and activity in litter during the initial development of pure and mixed plantations of Eucalyptus grandis and Acacia mangium Rev. Bras. Ciênc. Solo
Bini,Daniel; Figueiredo,Aline Fernandes; Silva,Mylenne Cacciolari Pinheiro da; Vasconcellos,Rafael Leandro de Figueiredo; Cardoso,Elke Jurandy Bran Nogueira.
Studies on microbial activity and biomass in forestry plantations often overlook the role of litter, typically focusing instead on soil nutrient contents to explain plant and microorganism development. However, since the litter is a significant source of recycled nutrients that affect nutrient dynamics in the soil, litter composition may be more strongly correlated with forest growth and development than soil nutrient contents. This study aimed to test this hypothesis by examining correlations between soil C, N, and P; litter C, N, P, lignin content, and polyphenol content; and microbial biomass and activity in pure and mixed second-rotation plantations of Eucalyptus grandis and Acacia mangium before and after senescent leaf drop. The numbers of cultivable...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Microorganism; Litterfall; Bioindicators; Forestry; Legumes; Basal respiration.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000100008
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MICROBIOLOGICAL ACTIVITY DURING THE COMPOSTING OF WASTES FROM BROILER PRODUCTIVE CHAIN REA
Bernardi,Francieli H.; Costa,Mônica S. S. de M.; Costa,Luiz A. de M.; Damaceno,Felippe M.; Chiarelotto,Maico.
ABSTRACT The quality of the carbon used as bulking agent in the composting process directly affects the dynamics of the waste degradation, which is governed by an active and diversified microbiota. The monitoring of the basal respiration and enzymatic activities during the composting of broiler agro-industrial wastes with different carbon sources as bulking agents was the aim of this study. The microbiological activities were more intense in the thermophilic phase of the process. The dynamics of the enzymatic activities were affected by the different carbon sources used as bulking agent in the composition of the windrows. When the milled sugarcane bagasse was used as carbon source, the windrow presented the highest amount of P in its constitution and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Basal respiration; Alkaline phosphatase; PH; Β-glucosidase; Cellulase; Urease.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000500741
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Microbiological and biochemical properties of an agricultural Mexican soil amended with sewage sludge Rev. Bras. Ciênc. Solo
Armenta,Renato; Vaca,Rocio; Lugo,Jorge; del Aguila,Pedro.
The application of sewage sludge is a concern because it may affect the quality of organic matter and microbiological and biochemical soil properties. The effects of surface application of sewage sludge to an agricultural soil (at 18 and 36 t ha-1 dry basis) were assessed in one maize (Zea mays L.) growing season. The study evaluated microbial biomass, basal respiration and selected enzymatic activities (catalase, urease, acid and alkaline phosphatase, and β-glucosidase) 230 days after sewage sludge application and infrared spectroscopy was used to assess the quality of dissolved organic matter and humic acids. Sewage sludge applications increased the band intensity assigned to polysaccharides, carboxylic acids, amides and lignin groups in the soil. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Basal respiration; Biosolids; Enzymatic activities; Metabolic quotient; Microbial biomass.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000500029
Registros recuperados: 8
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