Soil microbial communities under different soybean cropping systems: Characterization of microbial population dynamics, soil microbial activity, microbial biomass, and fatty acid profiles

Meriles, José Manuel; Gil, Silvina Vargas; Conforto, Erica Cinthia; Figoni, G.; Lovera, E.; March, G. J.; Guzmán, C. A.

doi:10.1016/j.still.2008.10.008

Cited by 78 publications

(47 citation statements)

References 51 publications

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“…Solo, 34:1585-1592 CCM (104,3 μg g -1 h -1 C-CO 2 ) e CCE (114,4 μg g -1 h -1 C-CO 2 ), não sendo constatada diferença significativa entre os demais sistemas. A esperada tendência de maior atividade respiratória da biomassa microbiana nos sistemas com menor intensidade de manejo do solo, conforme reportado em outros trabalhos (Vargas & Scholles, 2000;Costa et al, 2006;Hungria et al, 2009;Meriles et al, 2009;Frazão et al, 2010), não foi comprovada no presente estudo. O sistema de plantio direto com milho (PDM), notadamente na profundidade de 0-10 cm, apresentou menor produção de C-CO 2 que os sistemas CCB e CBAM, nos quais o manejo do solo foi mais intensivo.…”

Section: Resultsunclassified

Biomassa e atividade microbiana em solo sob diferentes sistemas de manejo na região fisiográfica Campos das Vertentes - MG

Silva

Cardoso

et al. 2010

Rev. Bras. Ciênc. Solo

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A biomassa e a atividade microbiana têm sido apontadas como indicadores adequados de alterações provocadas por diferentes sistemas de uso e manejo do solo. O objetivo deste trabalho foi avaliar as alterações na biomassa e na atividade microbiana de um Latossolo Vermelho-Amarelo ácrico típico, sob Cerrado nativo e diferentes sistemas de manejo, na região fisiográfica Campos das Vertentes, Minas Gerais. Os sistemas avaliados foram: cultivo convencional com batata (CCB); cultivo com batata, sucedido por aveia e rotação com milho (CBAM); cultivo convencional com milho (CCM); plantio direto com milho (PDM); cultivo convencional com eucalipto (CCE); e o Cerrado nativo (CN) como referência. Foram coletadas amostras de solo nas profundidades de 0-10, 10-20 e 20-30 cm, analisados o C microbiano (Cmic) e a respiração basal e calculados o quociente metabólico (qCO 2 ) e a relação Cmic/C orgânico. A biomassa e a atividade microbiana foram influenciadas pelos diferentes sistemas de manejo do solo, e as condições mais satisfatórias para a microbiota do solo ocorreram no Cerrado nativo. O manejo mais intensivo do solo e o uso frequente de agrotóxicos, característicos dos sistemas CCB e CBAM, determinaram redução nos teores de Cmic, menores valores da relação Cmic/C orgânico e maiores valores de qCO 2 , indicando uma provável condição de estresse para a biomassa microbiana. Termos de indexação: carbono microbiano, qualidade do solo, matéria orgânica.(1) Parte da Dissertação de Mestrado do primeiro autor apresentada ao Curso de Pós-Graduação em Ciência do Solo da Univer-

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Section: Resultsunclassified

Biomassa e atividade microbiana em solo sob diferentes sistemas de manejo na região fisiográfica Campos das Vertentes - MG

Silva

Cardoso

et al. 2010

Rev. Bras. Ciênc. Solo

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“…L ong-term continuous soybean cropping has received limited study, but is a common production system in Argentina and Brazil (Meriles et al, 2009;SaladoNavarro and Sinclair, 2009). Crop rotation with maize (Zea mays L.) and sorghum have been documented to increase succeeding soybean crop yields by 5 to 16% (Roder et al, 1989;Peterson and Varvel, 1989).…”

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Soybean yield and nodulation response to crop history and inoculation

2016

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“…The microbial biomass carbon (MBC) has been used as a sensitive and early indicator to access the soil quality (MERILES et al, 2009); however, MBC was not an attribute that exhibited change after the introduction of organic matter to sandy soil, nor did the microbial quotient change. The compost amendments can decrease the microbial biomass because the composition of the soil microbial community is modified and the competition among the microorganisms is enhanced (STEINBERG et al, 2004).…”

Section: Resultsmentioning

confidence: 99%

“…The FAMEs biomarkers were also the sensitive soil attributes in separate tillage treatments in the soybean growing season (MERILES et al, 2009). In a study using lignin on the suppressiveness of Rhizoctonia solani, which is also a fungal inhabitant of soil, Senechkin, Van Overbeek and Van Bruggen (2014) used multivariate PCA using only the FAMEs profile of the microbial community in the soil, obtaining a cumulative 80.8%.…”

Section: Resultsmentioning

confidence: 99%

“…The numbers of FAMEs detected in soil extract were: i-C15:0, a-C15:0, i-C16:0, i-C17:0 for Gram-positive bacteria (BRADLEY; DRIJBER; KNOPS, 2006;BLAUD et al, 2012). C12:0 2 OH, C12:0 3 OH, C14:0 2OH, C14:0 3OH, C16:1(9)cis, C17:0(9,10)cis, C16:0 2OH, cisC19:0 for Gram-negative bacteria (MERILES et al, 2009;BLAUD et al, 2012). C18:2(9,12)cis, C18:1(9)cis for saprophytic fungi (BRADLEY; DRIJBER; KNOPS, 2006).…”

Section: Methodsmentioning

confidence: 99%

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Fames and Microbial Activities Involved in the Suppression of Cassava Root Rot by Organic Matter

et al. 2017

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-The incorporation of organic matter has been used to manage of diseases caused by soilborne pathogen, but there is a gap in the use of coffee residues on disease supressiveness. The objective of this study was to evaluate the effect of organic matter sources against cassava root rot caused by F. solani CFF109. Fertilization with coffee residue (CR), cattle manure (CM), earthworm excrements (EE) and goat manure (GM) resulted in suppression of cassava root rot. The treatments of CR and CM presented higher reduction in the cassava disease severity. There were changes in the soil microbial community structure by organic matter incorporation, mainly in total fungi and Gram-negative bacteria populations. The total organic carbon and magnesium are negatively associated with disease severity. The microbial quotient, alkaline and acid phosphatase activities were positively and the biomarker a-15:0 was negatively associated with disease severity. This study indicated that agro-industrial residues can be recycled for providing organic matter and nutrients with effect for management of plant diseases by suppressing soilborne pathogens. This is the first evidence that the industrial residue of coffee can be use in the management of cassava root rot, caused by F. solani.Keywords: Manihot esculenta. Fusarium solani. Coffee residue. Extracellular soil enzyme. Microbial community structure. FAMES E ATIVIDADES MICROBIANAS ENVOLVIDAS

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Soil microbial communities under different soybean cropping systems: Characterization of microbial population dynamics, soil microbial activity, microbial biomass, and fatty acid profiles

Cited by 78 publications

References 51 publications

Biomassa e atividade microbiana em solo sob diferentes sistemas de manejo na região fisiográfica Campos das Vertentes - MG

Biomassa e atividade microbiana em solo sob diferentes sistemas de manejo na região fisiográfica Campos das Vertentes - MG

Soybean yield and nodulation response to crop history and inoculation

Fames and Microbial Activities Involved in the Suppression of Cassava Root Rot by Organic Matter

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