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Acidos húmicos y fúlvicos en la producción hidropónica de Chile Manzano (Capsicum pubescens R y P) en invernadero. Colegio de Postgraduados
Hernández Hernández, Antelma.
Para determinar el efecto de substancias húmicas (SH) en el crecimiento del chile manzano (Capsicum pubescens R y P), en invernadero, se evaluaron tres niveles de presión osmótica de solución nutritiva Steiner (0.54, 0.72 y 0.90 atm) y tres concentraciones de aplicación foliar de substancias húmicas (0.5, 1, 1.5 ml.L-1 de agua de las SH). Las variables medidas fueron: diámetro ecuatorial (DE), diámetro polar (DP), volumen (VOL), grosor de pericarpio (GP), numero de frutos comerciales (NFRC), numero de frutos pequeños (NFRP), número total de frutos (NTOT), rendimiento (RTO), peso seco de fruto (PSFR), firmeza (FIR), sólidos solubles totales (OBRIX), capsaicina (CAPS) y macro y micronutrientes (N, P, K, Ca, Mg y Fe. Al aplicar la solución nutritiva con...
Palavras-chave: Substancias húmicas; Solución nutritiva; Capsicum pubescens; Rendimiento; Humic substances; Nutrient solution; Yield; Maestría; Edafología.
Ano: 2011 URL: http://hdl.handle.net/10521/381
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Acidos húmicos y fúlvicos en la producción hidropónica de Chile Manzano (Capsicum pubescens R y P) en invernadero. Colegio de Postgraduados
Hernández Hernández, Antelma.
Para determinar el efecto de substancias húmicas (SH) en el crecimiento del chile manzano (Capsicum pubescens R y P), en invernadero, se evaluaron tres niveles de presión osmótica de solución nutritiva Steiner (0.54, 0.72 y 0.90 atm) y tres concentraciones de aplicación foliar de substancias húmicas (0.5, 1, 1.5 ml.L-1 de agua de las SH). Las variables medidas fueron: diámetro ecuatorial (DE), diámetro polar (DP), volumen (VOL), grosor de pericarpio (GP), numero de frutos comerciales (NFRC), numero de frutos pequeños (NFRP), número total de frutos (NTOT), rendimiento (RTO), peso seco de fruto (PSFR), firmeza (FIR), sólidos solubles totales (OBRIX), capsaicina (CAPS) y macro y micronutrientes (N, P, K, Ca, Mg y Fe. Al aplicar la solución nutritiva con...
Palavras-chave: Substancias húmicas; Solución nutritiva; Capsicum pubescens; Rendimiento; Humic substances; Nutrient solution; Yield; Maestría; Edafología.
Ano: 2011 URL: http://hdl.handle.net/10521/381
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Adventitious rooting on the Brazilian red-cloak and sanchezia after application of indole-butyric and humic acids Horticultura Brasileira
Baldotto,Lílian EB; Baldotto,Marihus A.
Plant regulators, as well as bioactive fractions of the organic matter, can accelerate the development and increase the efficiency of adventitious rooting in ornamental plants. We evaluated rooting in the Brazilian red-cloak (Megaskepasma erythrochlamys) and sanchezia (Sanchezia nobilis) cuttings in response to application of indole-butyric acid (IBA) and humic acids (HA). Stem cuttings of both species treated with solutions of 0, 250, 500, 1000, 2000 mg/L of IBA and 0, 10, 20, 30, 40 mmol/L of C of HA were placed in 2.0 L plastic pots containing carbonized rice husk, kept in greenhouse. Survival of cuttings, number of leaves and shoot and root fresh and dry matter were evaluated 45 days after. Data were used to run an analysis of variance. We observed the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Megaskepasma erythrochlamys; Sanchezia nobilis; Vegetative propagation; Humic substances; Auxins..
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362014000400434
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Avaliação dos compartimentos da matéria orgânica em área de Mata Atlântica - doi: 10.4025/actasciagron.v33i3.5169 Agronomy
Fontana, Ademir; INCRA; Silva, Cristiane Figueira da; UENF-Campos dos Goytacazes; Pereira, Marcos Gervasio; UFRRJ; Loss, Arcângelo; UFRRJ; Brito, Roberto Josino de; INCRA; Benites, Vinicius de Melo; Embrapa Solos.
Este trabalho objetivou avaliar os compartimentos da matéria orgânica do solo (MOS) em áreas com diferentes coberturas vegetais no entorno do Parque Estadual da Serra do Mar, Ubatuba, Estado de São Paulo. Foram selecionadas áreas cultivadas com as culturas de mandioca (monocultivo) e banana (sistema agroflorestal), uma área sob capoeira e outra sob floresta secundária (Mata Atlântica). Nestes locais foram coletadas amostras nas profundidades de 0-5 e 5-10 cm nos meses de julho/2003 (inverno) e março/2004 (verão). Foram determinados o teor de carbono orgânico total (COT), as substâncias húmicas com os teores de carbono orgânico na fração ácidos fúlvicos (C-FAF), fração ácidos húmicos (C-FAH) e humina (C-HUM) e a relação C-FAH/C-FAF e a matéria orgânica leve...
Palavras-chave: Carbono orgânico; Substâncias húmicas; Matéria orgânica leve organic carbon; Humic substances; Light organic matter.
Ano: 2011 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5169
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Biostimulation of inoculation with Glomus proliferum and application of humic acid in the in vitro growth of Lunularia cruciata Acta Botanica
Nobre,Camila Pinheiro; Huertas,Orlando Carlos Tavares; Tardin,José Rogério Figueira; Saggin Júnior,Orivaldo José; Fonseca,Henrique Manoel Apolónia Coutinho; Berbara,Ricardo Luis Louro.
In this study, we evaluated the growth of the liverwort Lunularia cruciata, inoculated or not with the arbuscular mycorrhizal fungi (AMF) Glomus proliferum (15 spores per Petri dish), in Strullu-Romand Variant (SRV) medium modified and enriched with humic acid (HA) at different concentrations (0, 20, 40 and 80 mg C L−1), as well as the sporulation of the AMF. We assessed the absolute growth rate (AGR) and relative growth rate (RGR) at inoculation, as well as at 7, 14, 21, 28, 43, 52 and 60 days after inoculation (DAI), whereas we assessed sporulation at 25, 43, 60 and 70 DAI. The main determinant of L. cruciata growth was the presence of AMF. With and without G. proliferum inoculation, respectively, the AGR peaked at 39 and 42 DAI, and the RGR was 0.0474...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Arbuscular mycorrhizal fungi; Liverworts; Monoxenic cultures; Humic substances.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400017
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Carbon and Nitrogen Stocks and Humic Fractions in Brazilian Organosols Rev. Bras. Ciênc. Solo
Valladares,Gustavo Souza; Pereira,Marcos Gervasio; Benites,Vinícius de Melo; Anjos,Lúcia Helena Cunha dos; Ebeling,Adierson Gilvani; Guareschi,Roni Fernandes.
ABSTRACT Despite limited geographic expression of Organosols in Brazil, their high carbon storage capacity and natural environmental vulnerability justifies further studies on C and N stocks in these soils and their relationship to the nature of organic matter. Evaluation of physical and chemical properties of organic soils and their ability to store C is important so as to develop sustainable management practices for their preservation. The objectives of the study were to measure the total organic carbon stock (OCst), total nitrogen stock (Nst), and humic fractions in Organosols from different environments and regions of Brazil, and to correlate the data with soil chemical (pH, P, K, Ca2+, Mg2+, Al3+, H+Al, CEC, V) and physical properties (soil bulk...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil organic matter; Humic substances; Histic horizon; Physical and chemical properties.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100425
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Carbon pool ratios as scientific support to field morphology in the differentiation of dark subsurface soil horizons Scientia Agricola
Toma,Maíra Akemi; Owens,Phillip Ray; Silva,Carlos Alberto; Silva,Sérgio Henrique Godinho; Silva,Elen Alvarenga; Curi,Nilton.
In soil surveys, it is usual to find profiles with an uncommon disposition of horizons. Dark horizons in depth might be either the consequence of erosion and redeposition of soil materials from upslope or an indication of the podzolization process, which forms a spodic horizon. Few laboratory analyses are known to characterize dark subsurface horizons which could allow for the differentiation of spodic from buried A horizons. Some researchers propose C-humic and C-fulvic acid fraction ratios and forms of carbon to analyze characteristics of these horizons. Therefore, this research aimed to characterize dark subsurface horizons found in soils under a Eucalyptus minimum tillage system in the state of Rio Grande do Sul, Brazil, and to relate soil organic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Humic substances; Organic matter; Erosion; Podzolization; Redeposition.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000400334
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Carbono orgânico e as frações húmicas em diferentes horizontes diagnósticos de solos brasileiros. Infoteca-e
FONTANA, A.; BENITES, V. de M.; PEREIRA, M. G.; ANJOS, L. H. C. dos.
Este trabalho teve por objetivo avaliar o carbono orgânico e as frações húmicas quanto à participação, as relações e a capacidade de distinção de diferentes horizontes diagnósticos de solos brasileiros.
Tipo: Folhetos Palavras-chave: Carbono orgânico; Frações húmicas; Atributos do solo; Classificação do Solo; Soil organic carbon; Soil classification; Humic substances.
Ano: 2012 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/990474
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Characterization of Organic Matter under Different Pedoenvironments in the Viruá National Park, in Northern Amazon Rev. Bras. Ciênc. Solo
Vale Júnior,José Frutuoso do; Nicodem,Steven; Melo,Valdinar Ferreira; Uchôa,Sandra Catia Pereira; Cruz,Diego Lima de Sousa.
ABSTRACT Soil organic matter (SOM) fractions result from a variety of environmental processes, which affect incorporation and production rates, decomposition, alteration, and/or mineralization of organic matter. The aim of this study was to characterize SOM under the environments of rain forest, wooded campinarana (grasslands), arboreal-shrubby campinarana, grassy-woody campinarana, and pioneer plants of the Viruá National Park, in the north of the Brazilian Amazon. After chemical and physical characterization and soil classification, total organic carbon (TOC), total N, microbial activity, organic C from fulvic acid fractions (FA), humic acid (HA), and humin (Hu) were determined at two depths (0.00-0.15 and 0.15-0.30 m). The TOC was lower in the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil organic carbon; Humic substances; Campinarana; Quartzipsamment; Spodosol.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100408
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Chemical characterization and infrared spectroscopy of soil organic matter from two southern brazilian soils Rev. Bras. Ciênc. Solo
Dick,D. P.; Santos,J. H. Z.; Ferranti,E. M..
Soil organic matter from the surface horizon of two Brazilian soils (a Latosol and a Chernosol), in bulk samples (in situ SOM) and in HF-treated samples (SOM), was characterized by elemental analyses, diffuse reflectance (DRIFT) and transmission Fourier transform infrared spectroscopy (T-FTIR). Humic acids (HA), fulvic acids (FA) and humin (HU) isolated from the SOM were characterized additionally by ultraviolet-visible spectroscopy (UV-VIS). After sample oxidation and alkaline treatment, the DRIFT technique proved to be more informative for the detection of "in situ SOM" and of residual organic matter than T-FTIR. The higher hydrophobicity index (HI) and H/C ratio obtained in the Chernosol samples indicate a stronger aliphatic character of the organic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hydrophobicity; Organo-mineral interactions; HF-treatment; Humic substances.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832003000100004
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Chemical Speciation of Copper in a Salt Marsh Estuary and Bioavailability to Thaumarchaeota ArchiMer
Whitby, Hannah; Hollibaugh, James T.; Van Den Berg, Constant M. G..
The concentrations of dissolved copper (Cu-d), copper-binding ligands, thiourea-type thiols, and humic substances (HScu) were measured in estuarine waters adjacent to Sapelo Island, Georgia, USA, on a monthly basis from April to December 2014. Here we present the seasonal cycle of copper speciation within the estuary and compare it to the development of an annually occurring bloom of Ammonia Oxidizing Archaea (AOA), which require copper for many enzymes. Two types of complexing ligands (L-1 and L-2) were found to dominate with mean complex stabilities (log K'(cuL)) of 14.5 and 12.8. Strong complexation resulted in lowering the concentration of free cupric ion (Cu2+) to femtomolar (fM) levels throughout the study and to sub-fM levels during the summer...
Tipo: Text Palavras-chave: Copper speciation; Cathodic stripping voltammetry; Humic substances; Thiols; Thiourea; Organic ligands; Thaumarchaeota; Ammonia-oxidizing archaea.
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00616/72834/72735.pdf
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CHROMIUM IN SOIL ORGANIC MATTER AND COWPEA AFTER FOUR CONSECUTIVE ANNUAL APPLICATIONS OF COMPOSTED TANNERY SLUDGE Rev. Bras. Ciênc. Solo
Oliveira,Mara Lucia Jacinto; Araujo,Ademir Sérgio Ferreira de; Melo,Wanderley José de.
Tannery sludge contains high concentrations of inorganic elements, such as chromium (Cr), which may lead to environmental pollution and affect human health The behavior of Cr in organic matter fractions and in the growth of cowpea (Vigna unguiculata L.) was studied in a sandy soil after four consecutive annual applications of composted tannery sludge (CTS). Over a four-year period, CTS was applied on permanent plots (2 × 5 m) and incorporated in the soil (0-20 cm) at the rates of 0, 2.5, 5.0, 10.0, and 20.0 Mg ha-1 (dry weight basis). These treatments were replicated four times in a randomized block design. In the fourth year, cowpea was planted and grown for 50 days, at which time we analyzed the Cr concentrations in the soil, in the fulvic acid, humic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil contamination; Humic substances; Solid residue; Heavy metals; Plant growth; Trace elements.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000100297
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Cover plants and mineral nitrogen: effects on organic matter fractions in an oxisol under no-tillage in the cerrado Rev. Bras. Ciênc. Solo
Santos,Isis Lima dos; Caixeta,Carla Ferreira; Sousa,Alex Antônio Torres Cortês de; Figueiredo,Cícero Célio de; Ramos,Maria Lucrécia Gerosa; Carvalho,Arminda Moreira de.
Cover plants are essential for the sustainability of no-tillage systems in tropical regions. However, information on the effects of these plants and N fertilization on soil organic matter fractions is still scarce. This study evaluated the effect of cover crops with different chemical composition and of N topdressing on the labile and humified organic matter fractions of an Oxisol of the Cerrado (savanna-like vegetation). The study in a randomized complete block design was arranged in split-plots with three replications. Four cover species were tested in the plots and the presence or absence of N topdressing in the subplot. The following cover species were planted in succession to corn for eight years: Urochloa ruziziensis; Canavalia brasiliensis M. ex...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Organic carbon; Humic substances; Particulate organic carbon.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000600022
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Effects of physicochemical soil properties of five agricultural soils on herbicide soil adsorption and leaching Ciencia e Investigación Agraria
Alister,Claudio; Araya,Manuel; Kogan,Marcelo.
Once pesticides reach the soil, there are several factors that affect their soil behavior. To identify the principal soil and herbicide properties that control their adsorption and leaching, a study of five Chilean agricultural and forest soils was performed. Simazine, diuron, terbuthylazine and MCPA were applied to the top of 45-cm tall by 12-cm diameter disturbed soil columns, filled with either an Andisol, Ultisol, Entisol or one of two Inceptisol soils. After herbicide applications, each lysimeter received 24 mm of simulated rain every 24 hours for five days. Once water percolation stopped, the lysimeters were divided into five sections and herbicide concentrations were quantified using High Pressure Liquid Chromatography. Relationships between soil...
Tipo: Journal article Palavras-chave: Diuron; Fulvic acids; Humic substances; MCPA; Triazines.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000200010
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Growth promotion of pineapple 'vitória' by humic acids and burkholderia spp. during acclimatization Rev. Bras. Ciênc. Solo
Baldotto,Lílian Estrela Borges; Baldotto,Marihus Altoé; Canellas,Luciano Pasqualoto; Bressan-Smith,Ricardo; Olivares,Fábio Lopes.
In vitro propagation of pineapple produces uniform and disease-free plantlets, but requires a long period of acclimatization before transplanting to the field. Quicker adaptation to the ex vitro environment and growth acceleration of pineapple plantlets are prerequisites for the production of a greater amount of vigorous, well-rooted planting material. The combination of humic acids and endophytic bacteria could be a useful technological approach to reduce the critical period of acclimatization. The aim of this study was to evaluate the initial performance of tissue-cultured pineapple variety Vitória in response to application of humic acids isolated from vermicompost and plant growth-promoting bacteria (Burkholderia spp.) during greenhouse...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ananas comosus; Plant growth-promoting bacteria; Diazotrophic bacteria; Humic substances; Inoculant; Biofertilizer.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000500012
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Humic acid-phosphate fertilizer interaction and extractable phosphorus in soils of contrasting texture Rev. Ciênc. Agron.
Rosa,Sara Dantas; Silva,Carlos Alberto; Maluf,Henrique José Guimarães Moreira.
ABSTRACT Extractable phosphorus (P) in soil depends on soil test employed, reactivity of fertilizer and interaction of P added to the soil properties, including organic matter. The aim of this paper was to assess the contents of P extracted from Red Latosol (LVd) and Quartzarenic Neosol (RQ) samples, incubated with 0; 5; 10; 50 or 100 mg kg-1 C-humic acid (C-HA) and 400 mg kg-1 of P, via Araxá phosphate rock (AP), Bayóvar reactive phosphate rock (BP) or single superphosphate (SS). Thus, it was adopted a five (C-HA concentrations) x three (P sources) factorial arrangement, using a randomized block design with three replications. The mixtures of soil, C-HA concentrations and P sources were incubated for 60 days; in sequence, the soil P was extracted by...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Humic substances; Extractors of soil P; Soil pH; Phosphate rocks.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000100032
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Humic Haplustox under different land uses in a high altitude environment in the Agreste region of Pernambuco, Brazil Rev. Bras. Ciênc. Solo
Araujo,Jane Kelly Silva; Ribeiro,Mateus Rosas; Corrêa,Marcelo Metri; Galindo,Izabel Cristina de Luna; Souza Júnior,Valdomiro Severino de.
The Garanhuns Plateau in the Agreste region of the State of Pernambuco, Brazil is characterized by humid climatic conditions due to orographic rains, unlike the surrounding semiarid region. These soils are subjected to intense agricultural use and are extremely important for the regional economy. This study was carried out in the municipality of Brejão in the Agreste region with the aim of assessing changes in humic Haplustox soils subjected to different land uses. Four plots with different vegetation covers (native forest, secondary shrubby vegetation (capoeira), traditional cropping system, and planted pasture) were selected, and samples were taken from a soil profile and four small pits surrounding it at each site. Physical and chemical properties were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Land use; Highland soils; Humic substances; Aggregate stability; Microbial biomass C.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000400029
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Influence of the apparent molecular size of humic substances on the efficiency of coagulation using Fenton's reagent Anais da ABC (AABC)
DE JULIO,MARCELO; DE JULIO,TATIANE S.; DI BERNARDO,LUIZ.
This work used Fenton's reagent as a coagulating agent in the treatment of water samples with high true colour caused by humic substances (HS) extracted from peat. In addition, the effects of the apparent molecular size of HS on coagulation, flocculation and flotation were studied. To that end, four distinct water samples having the same true colour were prepared using HS with different molecular sizes, which were obtained by ultrafiltration fractioning. Through optimisation of coagulant dosage and coagulation pH, as well as posterior construction of coagulation diagrams for each water sample, it was verified that the sample prepared with the smallest apparent molecular size of HS was the most difficult to treat, requiring higher coagulant (Fenton's...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coagulation; DAF; Drinking water; Fenton's reagent; Humic substances; Molecular size.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200833
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Interactions between a marine dinoflagellate (Alexandrium catenella) and a bacterial community utilizing reverine humic substances ArchiMer
Carlsoon, Per; Edling, Hélène; Bechemin, Christian.
Dissolved organic matter in the form of riverine humic substances stimulated the growth of both axenic nitrogen-limited Alexandrium catenella cultures and nitrogen-limited cultures with a marine bacterial community present. The biomass increase of A. catenella could not be accounted for by utilization of inorganic nitrogen compounds. However, there was a considerable release of dissolved free and combined amino acids from the humic substances that was utilized by A. catenella. About 40% of the nitrogen used by A. catenella in the axenic treatment with humic substances added was taken up as organic nitrogen. Bacterial aminopeptidase and beta -glucosidase activity was stimulated by the addition of humic substances and bacterial growth increased several-fold....
Tipo: Text Palavras-chave: Alexandrium catenella; Dinoflagellates; Bacteria; DOM; Humic substances.
Ano: 1998 URL: https://archimer.ifremer.fr/doc/00173/28431/26763.pdf
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Método para a extração de substâncias húmicas do solo: ácido húmico e ácido fúlvico. Infoteca-e
MACHADO, P. L. O. de A..
Vários métodos para a extração de substâncias húmicas dos solos utilizando a solução de hidróxido de sódio têm sido publicados. Esses métodos são bastante eficazes e produzem resultados comparáveis. Apresentamos aqui um método que tem sido considerado pela Sociedade Internacional de Substâncias Húmicas (11HISS) aceitável para a extração de substâncias húmicas de solos.
Tipo: Folhetos Palavras-chave: Substancia humica; Acido humico; Acido fulvico; Humic Acid; Extração; Extraction; Humic substances.
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/336496
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