Produção Nacional
Revisado por pares
G. B. Ferreira, Renildes Lúcio Ferreira Fontes, Maurício Paulo Ferreira Fontes, V. H. Alvarez V.,
Este trabalho objetivou avaliar a utilização da água quente e CaCl2 5 mmol L-1 como extratores de B disponível, usando forno de microondas como fonte de aquecimento, e estudar a influência de algumas características do solo nos teores de B extraído. A dosagem de B nos extratos foi feita com azometina-H. Executou-se um experimento em casa de vegetação em fatorial completo 17 solos x 6 doses de B (0, 0,15, 0,30, 0,60, 0,90 e 1,50 mg dm-3), com três repetições, em blocos ao acaso, usando o milho como ...
Tópico(s): Cassava research and cyanide
2001 - Sociedade Brasileira de Ciência do Solo | Revista Brasileira de Ciência do Solo
Produção Nacional
Revisado por pares
Sandro Marcelo de Caires, Maurício Paulo Ferreira Fontes, Raphael Bragança Alves Fernandes, Júlio César Lima Neves, Renildes Lúcio Ferreira Fontes,
A contaminação do solo é frequentemente associada às atividades agrícolas, industriais e de mineração, bem como à reutilização de resíduos urbanos e, ou, de origem animal. Tais atividades podem promover o acúmulo de metais pesados no solo, elementos potencialmente nocivos à qualidade ambiental e ao bem-estar dos seres vivos. A fitorremediação é uma tecnologia de recuperação de áreas degradadas que visa à descontaminação do solo. Pela sua maior produção de biomassa, as espécies florestais são capazes ...
Tópico(s): Plant Micronutrient Interactions and Effects
2011 - Sociedade de Investigações Florestais | Revista Árvore
Produção Nacional
Revisado por pares
Renildes Lúcio Ferreira Fontes, Juliana Maria Nogueira Pereira, Júlio César Lima Neves,
Excess of heavy metals in agricultural soils is a matter of concern since it may decrease economic yield as a result of toxicity and lower product quality as a result of metal accumulation in edible plant parts. Among plant species and among cultivars within species a natural variation in uptake, translocation and distribution of trace elements occur. The transference of Cd and Zn, from soil to two lettuce (Lactuca sativa L.) cultivars grown in greenhouse, was evaluated in separate experiments for ...
Tópico(s): Growth and nutrition in plants
2014 - Brazilian Academy of Sciences | Anais da Academia Brasileira de Ciências
Produção Nacional
Revisado por pares
Renildes Lúcio Ferreira Fontes, F. R. Cox,
Abstract Abstract Iron (Fe) deficiency in plants may be caused by heavy metal toxicity and is expressed mainly by chlorosis in young leaves. Zinc (Zn) is often the heavy metal involved. The growth of soybean (Glycine max [L.] Merr.) in a 40 μM Zn nutrient solution was studied using a factorial 2x2x2 experiment; two Fe (20 and 100 μM), two S (0.02 and 20 mM), and two Fe foliar fertilization (with and without Fe‐DTPA) levels. Lower dry matter yield, chlorosis in young leaves, and change in the periodic movement ( ...
Tópico(s): Aluminum toxicity and tolerance in plants and animals
1998 - Taylor & Francis | Journal of Plant Nutrition
Produção Nacional
Revisado por pares
Clístenes Williams Araújo do Nascimento, Renildes Lúcio Ferreira Fontes, Júlio César Lima Neves,
Abstract Plants from the Brazilian corn (Zea mays L.) cultivars CMS 54 and BR 473 were grown in nutrient solutions with 0.0, 0.05, 0.1, 0.5, and 1.0 mg cadmium (Cd) L‐1 for a ten day period. The experiment was a completely randomized block design with the treatments arranged in a 2×5×3 factorial, two corn cultivars, five Cd rates, and three replications. The influence of the Cd rates on the nutritional status of the corn plants was studied. Samples from roots and shoots were analyzed for their Cd, ...
Tópico(s): Heavy metals in environment
1998 - Taylor & Francis | Journal of Plant Nutrition
Produção Nacional
Revisado por pares
Renildes Lúcio Ferreira Fontes, F. R. Cox,
Abstract A typical symptom of iron (Fe) deficiency in plants is yellowing or chlorosis of leaves. Heavy metal toxicity, including that of zinc (Zn), is often also expressed by chlorosis and may be called Fe chlorosis. Iron deficiency and Zn toxicity were evaluated in soybean (Glycine max [L.] Merr.) at two levels each of Zn (0.8 and 40 μM), Fe (0 and 20 μM), and sulfur (S) (0.02 and 20 mM). Reduction in dry matter yield and leaf chlorosis were observed in plants grown under the high level of Zn (toxic level), ...
Tópico(s): Trace Elements in Health
1998 - Taylor & Francis | Journal of Plant Nutrition
Produção Nacional
Revisado por pares
Renildes Lúcio Ferreira Fontes, F. R. Cox,
Abstract Application of most waste or by‐product material increases the zinc (Zn) concentration in soils markedly. This investigation was conducted to determine if enhanced sulfur (S) supplied as sulfate (SO4) would modify the toxic effects of excess Zn. Soybean (Glycine max [L.] Merf. cv. Rarisorri) was grown for two weeks in nutrient solutions containing ranges in Zn (0.8 to 80 μM) and S (0.02 to 20 mM). Root and shoot conditions were observed, dry weights measured, and Zri concentration determined. ...
Tópico(s): Nitrogen and Sulfur Effects on Brassica
1995 - Taylor & Francis | Journal of Plant Nutrition
Produção Nacional
Revisado por pares
Iana Pedro Silva Quadros, Nayara Nolasco Madeira, Virgílio A. P. Loriato, Thaina Fernanda Fillietaz Saia, Jéssica Coutinho Silva, Fernanda Aparecida Ferrari Soares, José Romário de Carvalho, Pedro Augusto Braga dos Reis, Elizabeth P. B. Fontes, Wellington Ronildo Clarindo, Renildes Lúcio Ferreira Fontes,
Cadmium (Cd2+ ) is highly harmful to plant growth. Although Cd2+ induces programmed cell death (PCD) in plant cells, Cd2+ stress in whole plants during later developmental stages and the mechanism underlying Cd2+ -mediated toxicity are poorly understood. Here, we showed that Cd2+ limits plant growth, causes intense redness in leaf vein, leaf yellowing, and chlorosis during the R1 reproductive stage of soybean (Glycine max). These symptoms were associated with Cd2+ -induced PCD, as Cd2+ -stressed soybean ...
Tópico(s): Plant Stress Responses and Tolerance
2021 - Wiley | Plant Cell & Environment
Produção Nacional
Revisado por pares
Thaís Lopes Leal Cambraia, Renildes Lúcio Ferreira Fontes, Leonardus Vergütz, Rogério Faria Vieira, Júlio César Lima Neves, Pedro Silva Corrêa Netto, Raphael Felipe Nascimento Dias,
Abstract: The objective of this work was to evaluate the effects of the split and combinated application of foliar zinc (ZnF) + soil Zn (ZnS) on Zn concentration in the grains (ZnCG) of common bean (Phaseolus vulgaris). Two experiments were carried out in a greenhouse during two seasons. In the first experiment, two common bean cultivars received six ZnF rates (0, 120, 240, 480, 720, or 1,200 g ha-1), with split applications at the R5, R7, and R8, or R7 and R8, or R8 plant stages. In the second experiment, ...
Tópico(s): Plant Stress Responses and Tolerance
2019 - Embrapa Informação Tecnológica | Pesquisa Agropecuária Brasileira
Produção Nacional
Revisado por pares
José Cleydson F. Silva, Thales Francisco Mota Carvalho, Marcos Fernando Basso, Michihito Deguchi, Welison Andrade Pereira, Roberto Ramos‐Sobrinho, Pedro Marcus Pereira Vidigal, Otávio J. B. Brustolini, Fabyano Fonseca e Silva, Maximiller Dal-Bianco, Renildes Lúcio Ferreira Fontes, Anésia A. Santos, F. Murilo Zerbini, Fábio Ribeiro Cerqueira, Elizabeth P. B. Fontes,
The Geminiviridae family encompasses a group of single-stranded DNA viruses with twinned and quasi-isometric virions, which infect a wide range of dicotyledonous and monocotyledonous plants and are responsible for significant economic losses worldwide. Geminiviruses are divided into nine genera, according to their insect vector, host range, genome organization, and phylogeny reconstruction. Using rolling-circle amplification approaches along with high-throughput sequencing technologies, thousands ...
Tópico(s): Respiratory viral infections research
2017 - BioMed Central | BMC Bioinformatics
Produção Nacional
Revisado por pares
Jailson do Carmo Alves, Adaílson Pereira de Souza, Mônica Lima Alves Pôrto, Renildes Lúcio Ferreira Fontes, Jandeilson Alves de Arruda, Luciano Façanha Marques,
ABSTRACT Studies concerning the tolerance, absorption and distribution of heavy metals in plants are essential for the success of phytoremediation programs. The present study was carried out in order to evaluate the potential of the sunflower, castor bean, common buckwheat and vetiver as lead phytoaccumulators. The species were grown in nutrient solution containing increasing doses of Pb (0, 50, 100, 200 and 400 mg L-1) during a 30-day exposure period. A completely randomized split-plot design was ...
Tópico(s): Heavy Metals in Plants
2016 - UNIVERSIDADE FEDERAL DE CAMPINA GRANDE | Revista Brasileira de Engenharia Agrícola e Ambiental
Produção Nacional
Revisado por pares
Luiz Antônio Zanão Júnior, Renildes Lúcio Ferreira Fontes, Júlio César Lima Neves, Gaspar Henrique Korndörfer, Vinícius Tavares de Ávila,
Although silicon is not recognized as a nutrient, it may benefit rice plants and may alleviate the Mn toxicity in some plant species. The dry matter yield (root, leaf, sheaths and leaf blade) and plant architecture (angle of leaf insertion and leaf arc) were evaluated in rice plants grown in nutrient solutions with three Mn doses, with and without Si addition. The treatments were arranged in a 2 x 3 factorial [with and without (2 mmol L-1) Si; three Mn doses (0.5; 2.5 and 10 µmol L-1)], in a randomized ...
Tópico(s): Geochemistry and Elemental Analysis
2010 - Sociedade Brasileira de Ciência do Solo | Revista Brasileira de Ciência do Solo
Produção Nacional
Revisado por pares
Luiz Antônio Zanão Júnior, Renildes Lúcio Ferreira Fontes, Vinícius Tavares de Ávila,
O objetivo deste trabalho foi avaliar fontes e métodos de aplicação de silício para aumentar sua absorção e a resistência de plantas de arroz (Oryza sativa), cultivar Metica-1, à mancha-parda (Bipolaris oryzae). Foram conduzidos dois experimentos em casa de vegetação, com solo Latossolo Vermelho. O delineamento experimental foi o completamente casualizado, com oito repetições. As fontes foram wollastonita (silicato de cálcio), aplicada via solo, e silicato de potássio e ácido monossilícico, aplicados ...
Tópico(s): Geochemistry and Elemental Analysis
2009 - Embrapa Informação Tecnológica | Pesquisa Agropecuária Brasileira
Produção Nacional
Revisado por pares
Renildes Lúcio Ferreira Fontes, Joaci Franklin de Medeiros, Júlio César Lima Neves, O. S. Carvalho, Julia Medeiros,
ABSTRACT The growth of cotton (Gossypium hirsutum L.) was evaluated in a 6 × 5 factorial experiment with 6 boron (B) levels (0.0, 0.5, 1.0, 1.5, 2.0, and 3.0 mg dm−3), 5 cultivars ('CNPA 8H', 'BRS Aroeira', 'BRS Antares', 'BRS Sucupira', 'BRS Ipe'), and 3 replications. As B increased in the soil, leaf B concentrations increased linearly in 'BRS Aroeira' and 'CNPA 8H', and quadratically in 'BRS Ipe' and 'BRS Sucupira'. The concentrations of B in the leaves and in the soil increased with the B increasing in the ...
Tópico(s): Agricultural Science and Fertilization
2008 - Taylor & Francis | Journal of Plant Nutrition
Produção Nacional
Revisado por pares
Luiz Antônio Zanão Júnior, Fabrício Ávila Rodrigues, Renildes Lúcio Ferreira Fontes, Gaspar Henrique Korndörfer, Júlio César Lima Neves,
Abstract Brown spot is one of the most devasting and prevalent disease of rice and its control is mainly dependent on fungicide application. Therefore, this study aimed to examine the effects of Si and Mn on the development of brown spot on rice plants grown in hydroponic culture. Rice plants (cv. ‘Metica‐1’) were grown in plastic pots containing 0 or 2 m m Si (−Si and +Si treatments, respectively) with three Mn rates (0.5, 2.5 and 10 μ m ). Plants were inoculated with B. oryzae 39 days after emergence. ...
Tópico(s): Heavy metals in environment
2008 - Wiley | Journal of Phytopathology
Produção Nacional
Revisado por pares
Alessandra Monteiro Salviano Mendes, Renildes Lúcio Ferreira Fontes, Maurício de Oliveira,
Este trabalho teve como objetivo avaliar a variabilidade espacial da textura do solo, em duas areas do “Deserto Salino”, na regiao da planicie aluvial do Rio Apodi/Mossoro-RN. Para atingir esse objetivo, utilizaram-se tecnicas de geoestatistica. As areas foram georeferenciadas em imagens de satelite (LandSat TM-7), empregando-se um GPS portatil. O esquema de amostragem foi ao acaso com 60 unidades amostrais, com volume de 1 dm3, coletadas na camada de 0 a 5 cm. Com excecao do teor de areia grossa ...
Tópico(s): Geography and Environmental Studies
2008 - UNIVERSIDADE FEDERAL DO CEARÁ | Ciência Agronômica/Revista ciência agronômica
Produção Nacional
Revisado por pares
Cláudio Pereira Jordão, Lucimar L. Fialho, Júlio César Lima Neves, Paulo Roberto Cecon, Eduardo de Sá Mendonça, Renildes Lúcio Ferreira Fontes,
The removal of Cu, Ni and Zn from electroplating effluents by adsorption in cattle manure vermicompost has been discussed. A glass column 38 cm long and 7 cm i.d. was loaded with cattle manure vermicompost and effluents were passed through it. The metal concentrations were measured in the elutant. The experiments on adding effluent aliquots into the columns were continued until the metal concentrations in the elutant reached the maximum values established for effluent discharges in water courses ...
Tópico(s): Electrokinetic Soil Remediation Techniques
2007 - Elsevier BV | Bioresource Technology
Produção Nacional
Revisado por pares
Fabiano de Carvalho Balieiro, A. A. Franco, Renildes Lúcio Ferreira Fontes, Luiz Eduardo Dias, E. F. C. Campello, Sérgio Miana de Faria,
The interception of the rainfall by the forest canopy has great relevance to the nutrient geochemistry cycle in low fertility tropical soils under native or cultivated forests. However, little is known about the modification of the rainfall water quality and hydrological balance after interception by the canopies of eucalyptus under pure and mixed plantations with leguminous species, in Brazil. Samples of rainfall (RF), throughfall (TF) and stemflow (SF) were collected and analyzed in pure plantations ...
Tópico(s): Soil erosion and sediment transport
2007 - Sociedade de Investigações Florestais | Revista Árvore
Produção Nacional
Revisado por pares
Cláudio Pereira Jordão, Paulo Roberto da Silva Ribeiro, Antônio Teixeira de Matos, Rafael Kopschitz Xavier Bastos, Raphael Bragança Alves Fernandes, Renildes Lúcio Ferreira Fontes,
A study was performed to evaluate the environmental contamination in the Turvo Limpo River basin which receives effluent discharges from domestic (residential and commercial) activities. The watercourses examined were the São Bartolomeu Stream, Turvo Sujo River, and Turvo Limpo River, located in the Minas Gerais State, Brazil. Water samples were collected at the river-side and analyzed for evaluation of pollutant inputs. The pH, temperature, electrical conductivity, redox potential (Eh), dissolved ...
Tópico(s): Wastewater Treatment and Reuse
2006 - Springer Science+Business Media | Environmental Monitoring and Assessment
Produção Nacional
Revisado por pares
Cláudio Pereira Jordão, Clésia C. Nascentes, Paulo Roberto Cecon, Renildes Lúcio Ferreira Fontes, J. L. Pereira,
A study was performed to evaluate the pH and the availability of Zn, Cu, Mn, Pb, and Ni in soil amended with increasing doses of composted solid wastes, collected in Rio de Janeiro, Rio de Janeiro State and in Coimbra, Minas Gerais State, Brazil. The influence of the time elapsed between compost application to the soil and the sampling of the plant growth substrate (soil + compost) for pH and metal availability analyses was also examined. The availability of heavy metals in the soil, in the compost ...
Tópico(s): Composting and Vermicomposting Techniques
2006 - Springer Science+Business Media | Environmental Monitoring and Assessment
Produção Nacional
Revisado por pares
Cláudio Pereira Jordão, Lucimar L. Fialho, Paulo Roberto Cecon, Antônio Teixeira de Matos, Júlio César Lima Neves, Eduardo de Sá Mendonça, Renildes Lúcio Ferreira Fontes,
A greenhouse experiment was conducted to test the effectiveness of cattle manure vermicompost enriched with Cu, Ni or Zn to increase plant yield. An oxisol amended with the metal-enriched vermicompost at the doses 0, 25, 50, 65, and 80 t ha−1 was used to grow lettuce (Lactuca sativa L). After 39 days of growth, the plants were weighed for fresh and dry matter weight determinations. The soil amended with the vermicompost was analyzed for determination of DTPA (diethylenetriaminepentaacetic acid)-extractable ...
Tópico(s): Agricultural Science and Fertilization
2006 - Springer Science+Business Media | Water Air & Soil Pollution
Produção Nacional
Revisado por pares
Clístenes Williams Araújo do Nascimento, Renildes Lúcio Ferreira Fontes,
A adsorção de Cu e Zn é um dos principais fenômenos responsáveis pela disponibilidade desses elementos para as plantas. Portanto, estudos sobre a adsorção desses elementos em solos podem ser ferramentas úteis para compreensão da relação entre características dos solos e retenção desses micronutrientes. Nesse sentido, o presente trabalho objetivou caracterizar a adsorção de Cu e Zn em amostras de seis Latossolos de Minas Gerais e as influências de características dos solos sobre os parâmetros de ...
Tópico(s): Iron oxide chemistry and applications
2004 - Sociedade Brasileira de Ciência do Solo | Revista Brasileira de Ciência do Solo
Produção Nacional
Revisado por pares
Itamar Rosa Teixeira, Aluízio Borém, Geraldo Antônio de Andrade Araújo, Renildes Lúcio Ferreira Fontes,
The occurrence of micronutrient deficiencies, mainly of manganese (Mn) and zinc (Zn) in "cerrado" soils, has been increasing in several crops, including bean. Such a problem is caused by high rates of liming material applied entirely on the soil surface. In this study, the effects of the leaf application of Mn and Zn rates were evaluated. Three experiments were carried out: two in greenhouse and one under field conditions. The greenhouse experiments were set up using a randomized block design and a ...
Tópico(s): Growth and nutrition in plants
2004 - UNIVERSIDADE DE SÃO PAULO | Scientia Agricola
Produção Nacional
Revisado por pares
Clístenes Williams Araújo do Nascimento, Renildes Lúcio Ferreira Fontes, Adilson César Fortes Dias Melicio,
The knowledge of the chemical forms of copper in soils and the relationships of these forms with soil copper availability are important for predicting the copper behavior in the soil-plant system. The present work studies the influence of liming on the available contents of copper as well as on the forms of copper fractions in six types of Oxisols. Soil samples, with and without liming, received copper at rates of 0.0, 20.0 and 40.0 mg dm-3 and remained incubated for 30 days. Then, available copper ...
Tópico(s): Trace Elements in Health
2003 - UNIVERSIDADE DE SÃO PAULO | Scientia Agricola
Produção Nacional
Revisado por pares
Fabiano de Carvalho Balieiro, Renildes Lúcio Ferreira Fontes, Luiz Eduardo Dias, A. A. Franco, E. F. C. Campello, Sérgio Miana de Faria,
ABSTRACT The biomass accumulation and the distribution of nutrients in the different components of the aerial parts (leaves, branch, bark, and wood) of pure and mixed stands of guachapele [Pseudosamanea guachapele (Kunth) Harms] and eucalyptus (Eucalyptus grandis W. Hill ex Maiden) were quantified in Seropédica, Rio de Janeiro State, Brazil. Mixed stands had the highest production of stem tissue (204 m3/ha), in contrast with the pure plantations of each species (78.1 m3/ha for guachapele and 199 m3/ha ...
Tópico(s): Growth and nutrition in plants
2002 - Taylor & Francis | Journal of Plant Nutrition
Produção Nacional
Revisado por pares
Clístenes Williams Araújo do Nascimento, Renildes Lúcio Ferreira Fontes, Júlio César Lima Neves, Adilson César Fortes Dias Melicio,
O conhecimento das formas químicas do Zn no solo, bem como de suas relações com os teores disponíveis para as plantas, é importante para a previsão do comportamento desse micronutriente. Este trabalho teve como objetivo estudar a influência da calagem e de doses de Zn sobre a dessorção, extração e fracionamento desse elemento em amostras de seis Latossolos. As amostras, com e sem calagem, receberam 0, 20 e 40 mg dm-3 de Zn e foram incubadas por 30 dias. Após a incubação, foram determinados os teores ...
Tópico(s): Agricultural Science and Fertilization
2002 - Sociedade Brasileira de Ciência do Solo | Revista Brasileira de Ciência do Solo
Produção Nacional
Revisado por pares
Paulo Cézar Rezende Fontes, Marialva Alvarenga Moreira, Renildes Lúcio Ferreira Fontes, Antônio Américo Cardoso,
Abstract The experiment was carried out to evaluate the effects of fungicides [with or without zinc (Zn)] and different Zn fertilizer application methods (no fertilizer; soil application; shoot application; soil plus shoot application) on the soluble and total Zn in the dry matter of potato shoots. Zinc fertilizer was applied to the shoots at 20 and 45 days after plant emergence (DAE), immediately before plant sampling. At 25 DAE, Zn fungicide increased soluble and total Zn in the fourth leaf. The same ...
Tópico(s): Aluminum toxicity and tolerance in plants and animals
1999 - Taylor & Francis | Communications in Soil Science and Plant Analysis
Produção Nacional
Revisado por pares
F. A. T. Rocha, Paulo Cézar Rezende Fontes, Renildes Lúcio Ferreira Fontes, Fernando Pinheiro Reis,
Abstract Adequately evaluating the phosphorus (P) nutritional status of a potato crop is dependent upon sampling the appropriate plant part at a defined growth stage. To establish P critical concentration levels in various potato plant parts (leaves, stems, tubers, leaflets, and petioles) at two growth stages [20 and 50 days after plant emergence (DAE)], an experiment under Brazilian climatic and soil conditions was conducted using seven P treatment levels (0, 40, 80, 160, 320, 640, and 1,280 kg P2O5 ...
Tópico(s): Potato Plant Research
1997 - Taylor & Francis | Journal of Plant Nutrition
Produção Nacional
Revisado por pares
Renildes Lúcio Ferreira Fontes, Deonir L. Dallpai, José Mário Braga, Víctor Hugo Álvarez V.,
Abstract The potassium iodide and hydrogen peroxide reaction (KI+H2O2) is catalyzed by molybdate. Our objective was to use this reaction to determine molybdenum (Mo) in Mehlich 1 (1:10) soil test extracts. A 350‐nm wavelength and 10‐minute reaction time were selected for the determination and absorbance was linear for 0.0 to 0.15 mg L‐1 Mo. Ten samples of a LEd‐Iturama soil were extracted with Mehlich 1 and Mo determined. These extracts were also mixed and Mo determined on 10 aliquots of the mixture. ...
Tópico(s): Chromium effects and bioremediation
2000 - Taylor & Francis | Communications in Soil Science and Plant Analysis
Produção Nacional
Revisado por pares
Thomas Carlos de Oliveira, Renildes Lúcio Ferreira Fontes, Sebastião Tavares de Rezende, Alvarez V. Víctor Hugo,
Nickel is a micronutrient involved in nitrogen metabolism and a constituent of the urease molecule. Plant growth and urease activity were evaluated in lettuce (Lactuca sativa L.) grown in soil-filled pots in a 2 x 8 factorial design with two nitrogen (N) sources and eight Ni rates, with five replications. Nitrogen was applied at 200 mg dm-3 (half the dose incorporated into the soil at seedling transplanting and half top-dressed later) using the sources NH4NO3 (AN) and CO(NH2)2 (Ur). The Ni treatments ( ...
Tópico(s): Soil Management and Crop Yield
2013 - Sociedade Brasileira de Ciência do Solo | Revista Brasileira de Ciência do Solo