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| Registros recuperados: 37 | |
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| Mello,Alexandre Furtado Silveira; Lourenço,Silvia de Afonseca; Amorim,Lilian. |
| The white mold, caused by Sclerotinia sclerotiorum, is a very important disease in tomato crops. The objective of this work was to study the effect of plant extracts, animal residues and industrial by-products extracts on the fungus in vitro growth. Treatments consisted of different concentrations of pyrolignous oil, neem oil, monosodium glutamate, sewage sludge and organic compost [coffee residue (50%) coal residue (10%), maize residue (25%), poultry waste (12.5%), poultry meal (2.5%)]. Positive control consisted of Petri dishes with PDA medium and negative control treatment consisted of PDA medium with procymidone. Fungus colonies were incubated at 22ºC and light intensity of 260 lux. Variables such as mycelium growth rate, sclerotia production, and... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Azadirachta indica; Sclerotinia white rot; Alternative control; Sewage sludge; Soil respiration. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000200014 |
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| SOUZA, M. D. de; LIGO, M. A. V.; SKORUPA, L. A.; PIRES, A. M. M.; FILIZOLA, H. F.. |
| Resumo: O lodo pode fornecer às plantas, em quantidades satisfatórias, com exceção do potássio, todos os nutrientes essenciais para as culturas. A composição química do lodo é de suma importância na recomendação da quantidade a ser aplicada no solo. As recomendações são normalmente baseadas no teor de nitrogênio levando-se em consideração as concentrações de metais pesados presentes na massa de lodo, além da presença de patógenos. Assim, o conhecimento da taxa de mineralização do N orgânico é um dos principais fatores que determinam a quantidade de lodo a ser aplicada no solo. Apesar das vantagens do uso de lodo de esgoto para recuperar áreas degradadas, como apontado pela avaliação de outras variáveis neste estudo, deve ser salientado o inconveniente... |
| Tipo: Circular Técnica (INFOTECA-E) |
Palavras-chave: Lodo de esgoto; Área degradada; Código florestal; Solo; Adubo de esgoto; Recuperação do solo; Impacto ambiental; Nitrato; Poluição da água; Sewage sludge; Land restoration; Environmental impact. |
| Ano: 2011 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/908169 |
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| Corrêa,Rodrigo Studart; White,Robert E.; Weatherley,Anthony J.. |
| Biosolids have been reported to increase yields and supply plant nutrients. However, complying with health and environmental standards is necessary before applying biosolids to land. Thus, sludge stabilization is required to make biosolids safe enough for their agricultural use. Side effects of stabilization processes on agronomic features of sewage sludge are not quite known, although their understanding is essential for biosolids management. Based on a model equivalent to the Mitscherlich equation, effects of the most common processes for sludge stabilization were evaluated (composting, liming, heat-drying and solar irradiation) in relation to the agronomic effectiveness of biosolids to yield Lolium perenne L. on two tropical soils, with NH4H2PO4 as a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lolium perenne L.; Mitscherlich; Sewage sludge; Biosolids; Agronomic efficiency. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000300011 |
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| Hashemimajd,Kazem; Jamaati-e-Somarin,Shahzad. |
| Vermicomposting is at suitable methods for stabilization and converting of sewage sludge into useful products. To investigate the effects of bulking material on vermicompost quality, an experiment was conducted in a factorial design with three replications. In this experiment, the final dried sludge in lagoons was mixed with bulking materials (woodchips, three leaves, and wheat straw) in four mixing proportion with swage sludge (0, 15, 30 and 45%, V/V). Chemical properties of bulking materials, sewage sludge, and produced vermicomposts were determined. Vermicomposts had relatively low pH and electrical conductivity (EC). The nutrients content of vermicompost, especially N, P, Fe, and Zn, were high. These properties showed its suitable quality for use in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vermicompost; Sewage sludge; Bulking materials; Heavy metals; Eisenia foetid. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000600006 |
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| Oliveira,Ely S. A. de; Cardoso,Paulo H. S.; Sousa,Izabelle de P.; Alvarenga,Anarelly C.; Rodrigues,Márcio N.; Sampaio,Regynaldo A.. |
| ABSTRACT In order to reduce the effect of heavy metals on the biosolid, it is necessary to promote its phytoremediation. It is important to know the total content and chemical forms of these elements in the residue for analyzing its behavior and potential toxicity. Thus, the aim of this study was to evaluate the fractionation and behavior of Cu and Zn in biosolid cultivated with Pennisetum purpureum in different periods. The experiment was carried out using a randomized complete block design. The treatments, with five replicates, corresponded to Pennisetum purpureum cultivation in biosolid for 30, 60, 90, 120 and 150 days after planting. The total contents of Cu and Zn in the biosolid remained below the critical limits established by the CONAMA Resolution... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sequential extraction; Sewage sludge; Speciation of heavy metals. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000100003 |
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| Arriagada,César; Pacheco,Patricio; Pereira,Guillermo; Machuca,Angela; Alvear,Marysol; Ocampo,Juan Antonio. |
| The sewage sludge (SS) represents a source of organic matter although its increasing accumulation need a suitable environmental treatment. Our study analyzed the effect of the interaction between sewage sludge (doses 0, 2, 4, 6 and 8 g per 100 g of soil) and Eucalyptus globulus nursery seedlings inoculated with arbuscular mycorrhizal (AM) fungi as a fertilizers alternative and evaluate its effect on some soil enzyme activities. The seedlings were inoculated with Glomus claroideum, Glomus viscosum, Glomus intraradices and Glomus constrictum, establishing a uninoculated control. The sewage sludge application increased the shoot dry weight and the inoculation with G. viscosum was more effective at 6 g of SS in 100 g soil. The root colonization and succinate... |
| Tipo: Journal article |
Palavras-chave: Biological fertilisers; Glomus; Sewage sludge; Soil enzymes; Symbiosis. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912009000200001 |
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| Corrêa,Rodrigo Studart; Silva,Douglas José da. |
| ABSTRACT Biosolids have been produced by various stabilization processes of sewage sludge, but little attention has been given to the effects of such treatments on their effectiveness to supply nitrogen for plant growth. Here, we investigated these effects by cultivating Lolium perenne (ryegrass) in two Australian soils, a sandy Spodosol and a clayey Oxisol. Biosolids stabilized by either aerobic digestion, composting, CaO-liming, 250 oC heat-drying or solar irradiation of domestic sewage sludge were applied to soils at 10 increasing rates (0.25-8.0 dry Mg ha-1), and chemically fertilized soils were used as reference. Results showed that the stabilization processes affected biosolids-N agronomic rates and effectiveness to yield plant biomass, which was a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sewage sludge; Organic-N; Plant nutrients; Oxisol; Spodosol. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100523 |
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| Corrêa,Rodrigo Studart. |
| Biosolids have been considered satisfactory to supply crops and plant nutrients. The ideal biosolids application rate should result in high crop yields and nutrient uptake, and leave low concentrations of nutrients in soils to avoid environmental problems. The objective of this study was to estimate the capacity of five biosolids to supply N and P to ryegrass (Lolium perenne) after a single application of either fertilizers or biosolids to a Spodosol and an Oxisol. Results showed that 6% - 36% of N and 3% - 7% of P applied as biosolids were recovered in plants grown on the Spodosol, while the range on the Oxisol was 26%-75% for N and 1.2%-3.7% for phosphorus. Biosolids' efficiency on supplying N and P to plants was similar to fertilizer on the Spodosol,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lolium perenne; Sewage sludge; Nutrient efficiency. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2004001100012 |
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| Oliveira,Katarzyna Wójcik; Melo,Wanderley José de; Pereira,Gener Tadeu; Melo,Valéria Peruca de; Melo,Gabriel Maurício Peruca de. |
| Biosolids comprise organic matter and plant nutrients, but are also a source of heavy metals hazardous to soils, plants and humans. The aim of this work was to evaluate accumulation, movement in the soil profile and availability to maize plants of heavy metals in two oxisols amended with biosolids for five years. The experiment was carried out in Jaboticabal, SP, Brazil, under field conditions, using a split-plot design. Biosolids were added to the soils at four different rates, 0.0 (control with mineral fertilization), 2.5; 5.0 and 10.0 t ha-1, dry weight basis, annualy for three years. In the fourth and fifth years, the 2.5 t ha-1 treatment rate was increased to 20.0 t ha-1. In the fifth year, soil samples were collected at 0-20 and 20-40 cm depths and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mehlich 1; Sewage sludge; Maize; Metal availability. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000400012 |
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| Franco,Elias; Miglioranza,Edison; Fonseca,Ésio de Pádua. |
| The objective of this study was to analyze the effect of biosolid composts (BC) and carbonized rice hull (RH) on the production of Coffea arabica L. cv Catuaí Vermelho seedlings (IAC H 2077-2-5-99) grown in tubets. A totally randomized experimental design with five treatments and four replications was conducted in a nursery, to evaluate Co, Ni, Cr, Pb, Cu, Mn and Zn contents in roots, stems and leaves. Higher contents of Cr, Co, Ni, Pb, Cu and Zn were found in roots, while leaves carried the highest content of Mn. Zn in leaves went from average to high in plants developed in BC. In plants developed in RH. Mn content was about four times higher than the adequate concentration. Ni, Co, Cr, Pb and Cu contents found in leaves were considered normal, according... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea arabica L.; Substrate; Sewage sludge; Coffee nutrition; Coffee seedling. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000400002 |
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| Abbruzzini,Thalita Fernanda; Silva,Carlos Alberto; Andrade,Daniela Aparecida de; Carneiro,Waldete Japiassú de Oliveira. |
| There are currently many devices and techniques to quantify trace elements (TEs) in various matrices, but their efficacy is dependent on the digestion methods (DMs) employed in the opening of such matrices which, although "organic", present inorganic components which are difficult to solubilize. This study was carried out to evaluate the recovery of Fe, Zn, Cr, Ni, Cd and Pb contents in samples of composts and cattle, horse, chicken, quail, and swine manures, as well as in sewage sludges and peat. The DMs employed were acid digestion in microwaves with HNO3 (EPA 3051A); nitric-perchloric digestion with HNO3 + HClO4 in a digestion block (NP); dry ashing in a muffle furnace and solubilization of residual ash in nitric acid (MDA); digestion by using aqua... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aqua regia; Heavy metals; Manure; Sewage sludge; Compost; Degree of humification. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000100016 |
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| Registros recuperados: 37 | |
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