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| Registros recuperados: 12 | |
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| Cardoso,Aline Assis; Andraus,Michel de Paula; Borba,Tereza Cristina de Oliveira; Martin-Didonet,Claudia Cristina Garcia; Ferreira,Enderson Petrônio de Brito. |
| Abstract This study aimed to evaluate the tolerance to salinity and temperature, the genetic diversity and the symbiotic efficiency of rhizobia isolates obtained from wild genotypes of common bean cultivated in soil samples from the States of Goiás, Minas Gerais and Paraná. The isolates were subjected to different NaCl concentrations (0%, 1%, 2%, 4% and 6%) at different temperatures (28 °C, 33 °C, 38 °C, 43 °C and 48 °C). Genotypic characterization was performed based on BOX-PCR, REP-PCR markers and 16S rRNA sequencing. An evaluation of symbiotic efficiency was carried out under greenhouse conditions in autoclaved Leonard jars. Among 98 isolates about 45% of them and Rhizobium freirei PRF81 showed a high tolerance to temperature, while 24 isolates and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris; Rhizobium; Symbiotic efficiency; Carbon source use; Tolerance to salinity and temperature. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100043 |
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| Ferreira,Enderson Petrônio de Brito; Fageriae,Nand Kumar; Didonet,Agostinho Dirceu. |
| There are large areas of Oxisols in South America, including Brazil, with low fertility and acidity. To improve crop yields on these Oxisols, liming and fertilization is an essential practice. However, besides the high cost of fertilizers, chemical fertilizers cannot be used in organic production systems, except insoluble sources. Ash is one of the alternative source of supplying macro and micronutrients. A field experiment was conducted, in a completely randomized block design in a factorial arrangement (three sources of ash x four rates) resulting on 12 treatments, to evaluate the effect of source and rate of ash application on soil chemical properties. The treatments consisted of three sources (bagasse, bagasse+PJ07-A and bagasse+PJ07-RA) of sugarcane... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Base saturation; Organic residue; Alternative fertilizer. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902012000200004 |
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| Pereira,Helton Santos; Melo,Leonardo Cunha; Faria,Luís Cláudio de; Ferreira,Enderson Petrônio de Brito; Mercante,Fábio Martins; Wendland,Adriane; Souza,Thiago Lívio Pessoa Oliveira de. |
| ABSTRACT: More efficient strains of Rhizobium have been selected for use in common bean. However, little effort was made with lines selection. The main goals of this research were to verify the presence of interaction involving common bean elite lines utilizing Nitrogen fertilization and Rhizobium inoculation for grain yield and to identify lines with superior yields utilizing biological nitrogen fixation. Eight field trials were conducted at four location-years in Brazilian savanna, using randomized complete blocks design with three replications. Each trial was composed of 17 carioca elite lines. Every two tests in each location were planted side by side, one with mineral nitrogen fertilization (90kg) and the other one with inoculation with Rhizobium... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris; Biological nitrogen fixation; Grain yield; Genotype by environment interaction. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001202168 |
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| Ferreira,Enderson Petrônio de Brito; Wendland,Adriane; Didonet,Agostinho Dirceu. |
| Aiming to evaluate the effects of soil management and cover crops on microbial indicators of soil quality, an experiment was carried out under field conditions in which common bean and corn were cropped under no-tillage (NT) and conventional tillage (CT) after sunnhemp, velvet bean, pigeon pea, jack bean, sorghum and fallow (weeds). The basal soil respiration (BSR), C and N of the microbial biomass (Cmic and Nmic), metabolic quotient (qCO2), total enzymatic activity (TEA), β-glycosidase (β-GA) activity and acid phosphatase activity (APA) were evaluated in samples collected in 0-0.10 m depth. Cmic, qCO2, TEA, β-GA and APA were more sensitive in determining the effects caused by tillage and cover crops. Although the cover crops had not provided a remarkably... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Green manure; Cover crops; Soil quality; Sustainability. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052011000400024 |
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| Ferreira,Enderson Petrônio de Brito; Santos,Henrique Pereira dos; Costa,Janaina Ribeiro; De-Polli,Helvécio; Rumjanek,Norma Gouvêa. |
| An experiment was carried out under field conditions to assess the effects of soil management (no-tillage- NT and conventional tillage- CT) and crop rotation systems on microbial biomass-C (Cmic), basal soil respiration (BSR), metabolic quotient (qCO2), soil organic carbon content (Corg) and microbial carbon to organic carbon ratio (Cmic/Corg). Soil samples were collected on an area cultivated with wheat as winter crop and soybean as summer crop, both in rotation with vetch, maize and oats. Samples were also collected in a secondary forest used as reference. Data of each management system (NT and CT) were compared to forest area by "t" test (p<0.05) and crop rotations were compared by Tukey test (p<0.05). All data were submitted to multivariate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microbial biomass; Microbial respiration; Organic matter; Soil management. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902010000200002 |
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| Braga,Lívia Fabiana; Oliveira,Fênix Araújo de; Couto,Eva Aparecida Prado do; Santos,Karina Freire d'Eça Nogueira; Ferreira,Enderson Petrônio de Brito; Martin-Didonet,Claudia Cristina Garcia. |
| ABSTRACT This work aimed to characterize 20 isolates obtained from upland rice plants, based on phenotypic (morphology, enzymatic activity, inorganic phosphate solubilization, carbon source use, antagonism), genotypic assays (16S rRNA sequencing) and plant growth promotion. Results showed a great morphological, metabolic and genetic variability among bacterial isolates. All isolates showed positive activity for catalase and protease enzymes and, 90% of the isolates showed positive activity for amylase, catalase and, nitrogenase. All isolates were able to metabolize sucrose and malic acid in contrast with mannitol, which was metabolized only by one isolate. For the other carbon sources, we observed a great variability in its use by the isolates. Most... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa; PGPR; Associative bacteria; Bacterial diversity. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000100020 |
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| Ferreira,Enderson Petrônio de Brito; Stone,Luis Fernando; Martin-Didonet,Claudia Cristina Garcia. |
| RESUMO Os atributos da microbiota do solo são importantes indicadores de alterações causadas por práticas agrícolas. Foi conduzido um experimento em condição de campo, em um delineamento de blocos casualizados com quatro repetições, com o objetivo de avaliar os efeitos da forma de manejo (sistema de semeadura direta - SSD e sistema de plantio convencional - SPC) e da fase de condução da cultura do arroz de terras altas (pré-plantio - PP, floração - FA e pós-colheita - PC) sobre atributos da biomassa microbiana do solo (Cmic, Nmic, RBS, qCO2), atividade enzimática (AET, Aβ-G e AFA) e população de microrganismos (bactérias, fungos, actinobactérias e diazotróficos) em amostras de solo coletadas na profundidade de 0-20 cm, tendo como referência uma área de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa; Manejo do solo; Qualidade do solo; Contagem de microrganismos. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000100022 |
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| Brito,Luciana Fernandes de; Pacheco,Rafael Sanches; Souza Filho,Benedito Fernandes de; Ferreira,Enderson Petrônio de Brito; Straliotto,Rosângela; Araújo,Adelson Paulo. |
| O feijoeiro comum (Phaseolus vulgaris L.) pode se beneficiar da fixação biológica de N2, mas respostas inconsistentes da cultura à inoculação com rizóbio indicam a necessidade de aplicação de N mineral complementar. Este trabalho teve por objetivo avaliar a resposta do feijoeiro à inoculação com rizóbio, associada à suplementação com N mineral, nos biomas Cerrado e Mata Atlântica. Foram conduzidos quatro experimentos de campo, dois em Santo Antônio de Goiás, GO, um em Valença, RJ e um em Macaé, RJ, onde a inoculação com estirpes comerciais de rizóbio foi comparada à inoculação com a estirpe BR 923 de Sinorhizobium sp., à adubação com N mineral e à suplementação com N na semeadura e em cobertura. A avaliação da população nativa de rizóbio indicou 105... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fixação biológica de nitrogênio; Phaseolus vulgaris; Adubação de cobertura. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000400981 |
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| Ferreira,Enderson Petrônio de Brito; Dusi,André Nepomuceno; Xavier,Gustavo Ribeiro; Rumjanek,Norma Gouvêa. |
| The objective of this work was to determine the shifts on the PCR-DGGE profiles of bacterial communities associated to the rhizosphere of potato cultivars, in order to generate baseline information for further studies of environmental risk assessment of genetically modified potato plants. A greenhouse experiment was carried out with five potato cultivars (Achat, Bintje, Agata, Monalisa and Asterix), cultivated in pots containing soil from an integrated system for agroecological production. The experiment was conducted in a split plot randomized block design with five cultivars, three sampling periods and five replicates. Rhizosphere samples were collected in three sampling dates during plant development. DNA of rhizosphere microorganisms was extracted,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum; Associative bacteria; Molecular marker; PCA. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008000500008 |
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| Cunha,Eurâimi de Queiroz; Stone,Luís Fernando; Moreira,José Aloísio Alves; Ferreira,Enderson Petrônio de Brito; Didonet,Agostinho Dirceu; Leandro,Wilson Mozena. |
| Há necessidade de se avaliar a contribuição de plantas de cobertura e do seu manejo na manutenção ou melhoria da qualidade física do solo em áreas sob produção orgânica. Este trabalho objetivou determinar a influência das plantas de cobertura crotalária (Crotalaria juncea), guandu (Cajanus cajan (L.) Millsp), mucuna-preta (Mucuna aterrima), sorgo-vassoura (Sorgum technicum) e pousio nos atributos físicos de solo cultivado com feijão e milho orgânicos, sob semeadura direta (SD) e preparo convencional (PC). O trabalho foi conduzido em Santo Antônio de Goiás-GO, em Latossolo Vermelho distrófico, no delineamento de blocos ao acaso, com quatro repetições. Em novembro de 2003 foram instalados quatro experimentos, dois em SD e dois em PC, sendo um com feijão e... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris L; Zea mays; Densidade do solo; Porosidade do solo; Índice S. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000200028 |
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| Cunha,Eurâimi de Queiroz; Stone,Luís Fernando; Ferreira,Enderson Petrônio de Brito; Didonet,Agostinho Dirceu; Moreira,José Aloísio Alves; Leandro,Wilson Mozena. |
| Há necessidade de se avaliar a contribuição de culturas de cobertura e do seu manejo na manutenção da qualidade biológica do solo em áreas sob produção orgânica. Este trabalho objetivou determinar a influência das plantas de cobertura crotalária (Crotalaria juncea), guandu (Cajanus cajan (L.) Millsp), mucuna-preta (Mucuna aterrima), sorgo-vassoura (Sorghum technicum) e pousio nos atributos biológicos de solo cultivado com feijão e milho orgânicos, sob semeadura direta (SD) e preparo convencional (PC). O trabalho foi conduzido em Santo Antônio de Goiás-GO, em Latossolo Vermelho distrófico, no delineamento de blocos ao acaso, com quatro repetições. Em novembro de 2003 foram instalados quatro experimentos, dois em SD e dois em PC, sendo um com feijão e outro... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: C orgânico do solo; Carbono da biomassa microbiana; Respiração basal do solo; Quociente metabólico; Quociente microbiano. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000200029 |
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| Registros recuperados: 12 | |
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