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| Registros recuperados: 18 | |
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| Tiecher,Tales; Tiecher,Tadeu Luis; Mallmann,Fábio Joel Kochem; Zafar,Mohsin; Ceretta,Carlos Alberto; Lourenzi,Cledimar Rogério; Brunetto,Gustavo; Gatiboni,Luciano Colpo; Santos,Danilo Rheinheimer dos. |
| ABSTRACT In Southern Brazil, agricultural soils are often treated over long periods with annual pig slurry (PS) applications, and their influence on soil nutrient dynamics should be monitored. This study aimed to evaluate the P forms accumulated in the soil and some biological and biochemical parameters of the P cycle after 19 successive PS applications over eight years, in a no-tillage (NT) system. Pig slurry was applied at rates of 0, 20, 40, and 80 m3 ha-1 per crop. Several P forms (available P, microbial P, phosphatase enzyme, total organic and inorganic P) in the 0.00-0.05 and 0.05-0.10 m soil layers were analyzed. Increases up to 5,523 % in available P, 308 % in microbial P, 104 % in phosphatase enzyme activity, 91 % in organic P, 251 % in inorganic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organic phosphorus; Inorganic phosphorus; Microbial biomass phosphorus; Acid phosphatase. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100428 |
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| Revoredo,Marcos Donizeti; Melo,Wanderley José de. |
| The role of nickel in soils of tropical areas under the application of sewage sludge is still not very well known. This study was carried out under greenhouse conditions in Jaboticabal, São Paulo State, Brazil, with the objective of evaluating the impact of the application of sewage sludge previously contaminated with rates of nickel (329, 502, 746 and 1119 mg kg-1, dry basis) on a soil cropped with sorghum, in relation to soil enzyme activity and soil microbial biomass. Soil samples were collected at the beginning and the end of the experiment. The experimental design was completely randomized, with five treatments (control and four rates of Ni in the sewage sludge) and four replications. C and N of the soil microbial biomass and enzyme activities (acid... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Heavy metal; Biosolid; Acid phosphatase; Alkaline phosphatase; Sorghum. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000100009 |
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| Godosevicius Katz,Sima. |
| The interaction of antimesometrial decidual cells and collagen fibrils was studied by light microscopy and ultrastructural cytochemistry in fed and acutely fasted mice on days 9-11 of pregnancy. Fibrillar elements in the extracellular space consisted of collagen fibrils and filamentous aggregates (disintegrating collagen fibrils). Intracellular vacuoles exhibited typical collagen immersed in electron-translucent material (clear vacuoles) and faint cross-banded collagen immersed in electron-opaque material (dark vacuoles). Fibrillar elements showed extracellular acid phosphatase activity which was stronger in the region of mature decidua than in predecidual cells region in all animals; it was conspicuous in mature decidua of fasted animals. Intracellular... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Decidua; Acid phosphatase; Fasting; Electron microscopy; Mice. |
| Ano: 2005 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452005000300003 |
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| CARNEIRO, R. G.; MENDES, I. de C.; LOVATO, P. E.; CARVALHO, A. M. de; VIVALDI, L. J.. |
| RESUMO: O objetivo deste trabalho foi avaliar a influência do plantio direto, do preparo convencional do solo e de plantas de cobertura sobre indicadores biológicos associados ao ciclo do fósforo (P). O trabalho foi realizado em três áreas adjacentes, num Latossolo Vermelho-Amarelo, distribuídas da seguinte maneira: área I, dois anos de experimentação, comparando esses sistemas de plantio; área II, seis anos de experimentação e área III, Cerrado nativo. Em julho/1998 e janeiro/1999, avaliaram-se: o P da biomassa, populações de fungos e bactérias totais e solubilizadores de fosfato e a atividade da fosfatase ácida, nas profundidades de 0-5 e de 5-20 cm. A atividade da fosfatase e a ocorrência de fungos e bactérias solubilizadoras nas áreas com plantio... |
| Tipo: Folhetos |
Palavras-chave: Plantio convencional; Zero tillage; Microbial flora; Cover plants; Solubilizing; Biologia do Solo; Biomassa; Cerrado; Fosfato; Fosfatase Ácida; População Microbiana; Plantio Direto; Planta de Cobertura; Solubilização; Acid phosphatase; Conventional tillage; Biomass; Phosphates; Soil biology. |
| Ano: 2004 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/569003 |
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| Silva,Andréa Scaramal da; Colozzi Filho,Arnaldo; Nakatani,André Shigueyoshi; Alves,Sérgio José; Andrade,Diva de Souza; Guimarães,Maria de Fátima. |
| Integrated crop-livestock systems (ICLs) are a viable strategy for the recovery and maintenance of soil characteristics. In the present study, an ICL experiment was conducted by the Instituto Agronômico do Paraná in the municipality of Xambre, Parana (PR), Brazil, to evaluate the effects of various grazing intensities. The objective of the present study was to quantify the levels of microbial biomass carbon (MBC) and soil enzymatic activity in an ICL of soybean (summer) and Brachiaria ruziziensis (winter), with B. ruziziensis subjected to various grazing intensities. Treatments consisted of varying pasture heights and grazing intensities (GI): 10, 20, 30, and 40 cm (GI-10, GI-20, GI-30, and GI-40, respectively) and a no grazing (NG) control. The microbial... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microbial carbon; Microbial respiration; Acid phosphatase; Β-glucosidase; Arylsuphatase; Fluorescein diacetate hydrolysis; Carbono microbiano; Respiração microbiana; Fosfatase ácida; Β-glucosidase; Arilsulfatase; Hidrólise do diacetato de fluoresceína. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000100040 |
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| Costa,Adriana Rodolfo da; Sato,Juliana Hiromi; Ramos,Maria Lucrécia Gerosa; Figueiredo,Cícero Célio de; Souza,Géssica Pereira de; Rocha,Omar Cruz; Guerra,Antônio Fernando. |
| Phosphorus fertilization and irrigation increase coffee production, but little is known about the effect of these practices on soil organic matter and soil microbiota in the Cerrado. The objective of this study was to evaluate the microbiological and oxidizable organic carbon fractions of a dystrophic Red Latossol under coffee and split phosphorus (P) applications and different irrigation regimes. The experiment was arranged in a randomized block design in a 3 x 2 factorial design with three split P applications (P1: 300 kg ha-1 P2O5, recommended for the crop year, of which two thirds were applied in September and the third part in December; P2: 600 kg ha-1 P2O5, applied at planting and then every two years, and P3: 1,800 kg ha-1 P2O5, the requirement for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: P cycling; Soil microbial activity; Acid phosphatase; Soil organic matter. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000100006 |
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| Balota, Elcio Liborio; Instituto Agronômico do Paraná; Machineski, Oswaldo; Instituto Agronômico do Paraná; Truber, Priscila Viviane; Instituto Agronômico do Paraná. |
| The objective of this work was to evaluate the changes in soil enzyme activities due to application of pig slurry under different soil tillage systems. The experiment was conducted in a clayey Oxisol in Palotina, PR, using different quantities of pig slurry (0, 30, 60 and 120 m3 ha-1 year-1) applied to the soil prior to the summer and winter crop season under conventional tillage (CT) and no tillage (NT), with three replicates. The areas were cultivated with soybean (Glycine max L.) and maize (Zea mays L.) in the summers of 1998 and 1999, respectively, and with wheat (Triticum sativum Lam.) in the winters of both years. The soil samples were collected in March and October of 1998 and 1999 at depths of 0-5, 5-10 and 10-20 cm. The pig slurry application and... |
| Tipo: Pesquisa de Campo |
Palavras-chave: Agrárias Microbiologia e Bioquimica do Solo Arylsulfatase; Acid phosphatase; Swine manure; No-tillage systems; Nutrient cycling Arylsulfatase; Acid phosphatase; Swine manure; No-tillage systems; Nutrient cycling. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/9816 |
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| Registros recuperados: 18 | |
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