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Registros recuperados: 36 | |
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Martines,Alexandre Martin; Andrade,Cristiano Alberto de; Cardoso,Elke Jurandy Bran Nogueira. |
O objetivo deste trabalho foi avaliar a mineralização do carbono orgânico do lodo de curtume, aplicado em solos com diferentes classes texturais, de modo a caracterizar a cinética do processo de mineralização e auxiliar na elaboração de normas técnicas sobre o uso agrícola desse material. Foram conduzidos experimentos de incubação por 105 dias, em laboratório, utilizando-se três solos: Nitossolo Vermelho eutroférrico típico (NVef), Latossolo Vermelho-Amarelo distrófico típico (LVAd) e Neossolo Quartzarênico órtico típico (RQo). O lodo de curtume utilizado nos experimentos foi composto de uma mistura, na proporção de 1:1, do lodo do caleiro e do lodo primário da estação de tratamento de efluentes, resultante da precipitação dos efluentes gerados no... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Resíduo orgânico; Respiração basal; Atividade microbiana. |
Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2006000700011 |
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Sala,Valéria Marino Rodrigues; Cardoso,Elke Jurandy Bran Nogueira; Freitas,José Guilherme de; Silveira,Adriana Parada Dias da. |
O objetivo deste trabalho foi avaliar, em condições de campo, o efeito e a viabilidade econômica da inoculação de novos isolados homólogos de bactérias diazotróficas endofíticas, sob diferentes doses de nitrogênio, em dois genótipos de trigo, em duas localidades. Foram utilizados: três isolados de bactérias diazotróficas endofíticas (IAC-AT-8, Azospirillum brasilense; IAC-HT-11, Achromobacter insolitus; IAC-HT-12, Zoogloea ramigera), dois genótipos de trigo (ITD-19 e IAC-370) e três doses de N, na forma de uréia (0, 60 e 120 kg ha-1). No estádio de quatro folhas e no perfilhamento, foram avaliados a massa de matéria seca e o N acumulado na parte aérea. Na colheita, foram avaliados o teor de N, a massa de 1.000 sementes e a produtividade de grãos. A... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum durum; Triticum aestivum; Adubação nitrogenada; Produtividade de grãos. |
Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2007000600010 |
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Nogueira,Marco Antonio; Cardoso,Elke Jurandy Bran Nogueira. |
The objective of this work was to evaluate the response of rangpur lime (Citrus limonia) to arbuscular mycorrhiza (Glomus intraradices), under P levels ranging from low to excessive. Plants were grown in three levels of soluble P (25, 200 and 1,000 mg kg-1), either inoculated with Glomus intraradices or left noninoculated, evaluated at 30, 60, 90, 120 and 150 days after transplanting (DAT). Total dry weight, shoot P concentration and specific P uptake by roots increased in mycorrhizal plants with the doses of 25 and 200 mg kg-1 P at 90 DAT. With 1,000 mg kg-1 P, mycorrhizal plants had a transient growth depression at 90 and 120 DAT, and nonmycorrhizal effects on P uptake at any harvesting period. Root colonization and total external mycelium correlated... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus; Glomus; Active external mycelium; Growth depression; Rootstock; Total external mycelium. |
Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2006000100013 |
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Vasconcellos,Rafael Leandro de Figueiredo; Bini,Daniel; Paula,Alessandra Monteiro de; Andrade,Joice Bonfim; Cardoso,Elke Jurandy Bran Nogueira. |
A recuperação de áreas de floresta, principalmente de matas ciliares, tornou-se fator-chave para a adequação ambiental da agricultura, com o propósito de proteger os recursos hídricos e a biota. Entretanto, o cultivo agrícola tradicional, além de ter alterado a ciclagem de nutrientes com a perda de matéria orgânica, biomassa e atividade microbiana, causou também a compactação do solo, o que influencia a posterior implantação de reflorestamentos. O objetivo deste trabalho foi identificar quais atributos do solo (físicos, químicos e microbiológicos) mais influenciam o teor de C, N, P e umidade da serapilheira em áreas de mata ciliar com diferentes idades de recuperação (20, 10 e cinco anos), em comparação com uma área nativa (NT). A partir da ANOVA e dos... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atividades da desidrogenase e urease; Biomassa microbiana; Ciclagem de nutrientes; Compactação do solo; Recuperação de áreas degradadas. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000500006 |
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Pereira,Jamil de Morais; Segat,Julia Corá; Baretta,Dilmar; Vasconcellos,Rafael Leandro de Figueiredo; Baretta,Carolina Riviera Duarte Maluche; Cardoso,Elke Jurandy Bran Nogueira. |
ABSTRACT Studies on soil quality in Araucaria forests contribute to understanding changes in this ecosystem and serve as a tool in conserving its biodiversity. The aim of this study was to evaluate the potential of soil macrofauna in discriminating native and replanted Araucaria forests for selection of soil quality indicators. Native (NF) and replanted (RF) Araucaria angustifolia forests were evaluated in three regions of the state of São Paulo, representing three true replications. Fifteen soil samples were collected in each area for evaluation of the physical, chemical, and microbiological properties and the macrofauna through use of monolith excavation and the manual screening method [Tropical Soil Biology and Fertility (TSBF) method]. In addition, we... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Multivariate analysis; Biodiversity; Bioindicators. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100423 |
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Pereira,Jamil de Morais; Baretta,Dilmar; Bini,Daniel; Vasconcellos,Rafael L. de F.; Cardoso,Elke Jurandy Bran Nogueira. |
Araucaria angustifolia (Bert.) O. Kuntze is the main component of the Mixed Ombrophilous forest and, in the State of São Paulo, it is associated with a high diversity of soil organisms, essential for the maintenance of soil quality, making the conservation of this ecosystem a major and pressing challenge. The objective of this study was to identify the physical and chemical properties that are most closely correlated with dehydrogenase enzyme activity, basal respiration and microbial biomass under native (NF) and replanted (RF) Araucaria angustifolia forests in three regions of the state of São Paulo, in winter and summer. The main differentiating factors between the areas were also determined. Each forest was represented by three true replications; at... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Multivariate analysis; Soil quality; Soil chemical properties; Microbiological properties. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000300003 |
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Sala,Valeria Marino Rodrigues; Cardoso,Elke Jurandy Bran Nogueira; Freitas,Jose Guilherme de; Silveira,Adriana Parada Dias da. |
Bactérias diazotróficas pertencentes a diferentes espécies podem estar associadas a gramíneas, como o trigo, promovendo incrementos no crescimento e na produtividade de grãos. Foi realizado um experimento, em condições de campo, com o objetivo de avaliar os benefícios e a viabilidade econômica da inoculação de novos isolados homólogos de bactérias diazotróficas endofíticas em genótipos de trigo sob diferentes doses de N. Foram empregados três isolados de bactérias diazotróficas endofíticas (IAC-AT-8-Azospirillum brasiliense, IAC-HT-11-Achromobacter insolitus e IAC-HT-12-Zoogloea ramigera), dois genótipos de trigo (ITD- 19-Triticum durum L. e IAC-370-Triticum aestivum hard L.) e três doses de N (0, 60 e 120 kg ha-1). Foram avaliados, no estádio de... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genótipos de trigo; Produtividade de grãos; Viabilidade econômica; Bactérias promotoras de crescimento de plantas. |
Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832008000300018 |
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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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Cardoso,Elke Jurandy Bran Nogueira; Vasconcellos,Rafael Leandro Figueiredo; Bini,Daniel; Miyauchi,Marina Yumi Horta; Santos,Cristiane Alcantara dos; Alves,Paulo Roger Lopes; Paula,Alessandra Monteiro de; Nakatani,André Shigueyoshi; Pereira,Jamil de Moraes; Nogueira,Marco Antonio. |
Soil Health refers to the ecological equilibrium and the functionality of a soil and its capacity to maintain a well balanced ecosystem with high biodiversity above and below surface, and productivity. To understand and use soil health as a tool for sustainability, physical, chemical, and biological properties must be employed to verify which respond to the soil use and management within a desired timescale. Attributes with a rapid response to natural or anthropogenic actions are considered good indicators of soil health. Among the physical indicators, soil texture, aggregation, moisture, porosity, and bulk density have been used, while among chemical indicators total C and N, mineral nutrients, organic matter, cation exchange capacity, among others are... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Land-use; Microbial community; Soil fauna; Soil quality; Sustainability. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000400009 |
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Nogueira,Marco Antonio; Cardoso,Elke Jurandy Bran Nogueira. |
Mycorrhizal plants may present Mn toxicity alleviation and this depends on the plant-endophyte-environment interaction. The effectiveness of three arbuscular mycorrhizal fungi (AMF) (Glomus macrocarpum, G. etunicatum, G. intraradices) and a control without AMF in two soils: Typic Rhodudalf with high Mn availability and a Typic Quartzipsamment, with low Mn availability, was evaluated in a time-course experiment at 3, 6, 9 and 12 weeks after soybean (Glycine max L.) seedling emergence. The objective was to select the most effective AMF species to enhance plant growth and to assess its effects upon Mn uptake by plants and Mn availability in the soil. For the sandy soil, AMF inoculation resulted in increased plant biomass, especially with G. intraradices and... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mn; Availability; Metal; Mycorrhiza; Toxicity; Uptake. |
Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000200018 |
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Moreira,Milene; Baretta,Dilmar; Tsai,Siu Mui; Gomes-da-Costa,Sandra Maria; Cardoso,Elke Jurandy Bran Nogueira. |
Araucaria angustifolia (Bert.) O. Ktze. is an endangered Brazilian coniferous tree that has been almost exterminated in the native areas because of uncontrolled wood exploitation. This tree has been shown to be highly dependent on arbuscular mycorrhizal fungi (AMF) and, therefore, AMF may be essential for forest sustainability and biological diversity. Root colonization, density and diversity of AMF spores were assessed in two Araucaria forest stands at the State Park of Alto Ribeira (PETAR), at two sampling dates: May and October. A comparison was made between a mature native stand composed of Araucaria trees mixed into a variety of tropical trees and shrubs, without any sign of anthropogenic interference (FN) and an Araucaria stand planted in 1987 (R),... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazilian Pine; Diversity; Spore density; Root colonization; Multivariate analysis. |
Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000400010 |
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Vasconcellos,Rafael Leandro Figueiredo de; Silva,Mylenne Calciolari Pinheiro da; Ribeiro,Carlos Marcelo; Cardoso,Elke Jurandy Bran Nogueira. |
Actinobacteria are capable of playing several different roles in soil ecosystems. These microorganisms affect other organisms by producing secondary metabolites and are responsible for the degradation of different complex and relatively recalcitrant organic compounds. In our survey of actinobacteria isolated from the rhizosphere of Araucaria angustifolia, five culture media (AI, WYE, YCED, MSSC and LNMS) were compared for their effectiveness in isolating these microorganisms. When summing up all the isolates randomly obtained, we got 103 isolates. After isolation, the phosphate-solubilizing ability and the "in vitro" production of indole-acetic acid and chitinases were evaluated. The AI medium was ineffective for actinobacteria isolation, when it was... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazil Pine; Selective culture media; Indole-acetic acid; Chitinase; Phosphate solubilization. |
Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000600019 |
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Pereira,Jamil de Morais; Cardoso,Elke Jurandy Bran Nogueira; Brescovit,Antonio Domingos; Oliveira Filho,Luís Carlos Iuñes de; Segat,Julia Corá; Baretta,Carolina Riviera Duarte Maluche; Baretta,Dilmar. |
ABSTRACT: Spiders are part of the soil biodiversity, considered fundamental to the food chain hierarchy, directly and indirectly influencing several services in agricultural and forest ecosystems. The present study aimed to evaluate the biodiversity of soil spider families and identify which soil properties influence their presence, as well as proposing families as potential bioindicators. Native forest (NF) and reforested sites (RF) with Araucaria angustifolia (Bertol.) Kuntze were evaluated in three regions of the state São Paulo, both in the winter and summer. Fifteen soil samples were collected from each forest to evaluate the biological (spiders and microbiological), chemical and physical soil properties, in addition to properties of the litter (dry... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Spider fauna; Soil biodiversity; Soil properties; Soil quality. |
Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000300701 |
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Registros recuperados: 36 | |
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