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| Registros recuperados: 21 | |
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| Tiecher,Tales; Pias,Osmar Henrique de Castro; Bayer,Cimélio; Martins,Amanda Posselt; Denardin,Luiz Gustavo de Oliveira; Anghinoni,Ibanor. |
| ABSTRACT The use of gypsum to improve the root environment in tropical soils in the southeastern and central-western regions of Brazil is a widespread practice with well-established recommendation criteria. However, only recently gypsum began to be used on subtropical soils in South of Brazil, so available knowledge of its effect on crop yield is incipient and mainly for soils under no-till (NT) systems. Avaiable studies span a wide range of responses, from a substantial increase to a slight reduction in crop yield. Also, the specific conditions leading to a favorable effect of gypsum application on crop yield are yet to be accurately identified. The primary objectives of this study were to examine previously reported results to assess the likelihood of a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phosphogypsum; Aluminum saturation; Subsurface acidity; Base saturation. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100505 |
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| Oliveira,Rodolfo Assis de; Comin,Jucinei José; Tiecher,Tales; Piccin,Rogério; Somavilla,Luiza Michelon; Loss,Arcângelo; Lourenzi,Cledimar Rogério; Kürtz,Claudinei; Brunetto,Gustavo. |
| ABSTRACT Cover crops grown alone or in association can take up different amounts of phosphorus (P) from the soil and accumulate it in different P-forms in plant tissue. Cover crop residues with a higher content of readily decomposed forms may release P more quickly for the next onion crop. The aim of this study was to evaluate the release of P forms from residues of single and mixed cover crops in agroecological no-till onion (Allium cepa L.) production. The experiment was conducted in Ituporanga, Santa Catarina (SC), Brazil, in an Inceptisol, with the following treatments: weeds, black oat (Avena sativa L.), rye (Secale cereale L.), oilseed radish (Raphanus sativus L.), oilseed radish + black oat, and oilseed radish + rye. Cover crops were sown in April... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Green manure crops; P cycling; Allium cepa L. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100502 |
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| Miguel,Pablo; Dalmolin,Ricardo Simão Diniz; Pedron,Fabrício de Araújo; Moura-Bueno,Jean Michel; Tiecher,Tales. |
| O uso do solo fora de sua aptidão agrícola é o que norteia a degradação dos recursos naturais por meio das atividades antrópicas. As atividades agropecuárias estão entre as que mais perturbam o meio ambiente, expondo o solo à ação dos processos erosivos e acelerando a transferência de sedimentos aos corpos de água. Nos últimos anos, o método fingerprinting para identificação de fontes de sedimentos tem sido utilizado com sucesso no mundo, porém, trabalhos dessa natureza realizados no Brasil ainda estão em caráter incipiente. O objetivo deste trabalho foi estimar a proporção de contribuição das principais fontes de produção de sedimentos de uma bacia hidrográfica de encosta, onde predominam solos rasos e agricultura menos intensiva no sistema familiar. Essa... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fingerprinting; Elementos traçadores; Erosão hídrica; Áreas de encosta. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000200023 |
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| Schmitt,Djalma Eugênio; Comin,Jucinei José; Gatiboni,Luciano Colpo; Tiecher,Tales; Lorensini,Felipe; Melo,George Wellington Bastos de; Girotto,Eduardo; Guardini,Renato; Heinzen,Janaína; Brunetto,Gustavo. |
| Phosphorus (P) applications to vineyards can cause P accumulation in the soil and maximize pollution risks. This study was carried out to quantify the accumulation of P fractions in sandy soils of vineyards in southern Brazil. Soil samples (layers 0-5, 6-10 and 11-20 cm) were collected from a native grassland area and two vineyards, after 14 years (vineyard 1) and 30 years (vineyard 2) of cultivation, in Santana do Livramento, southern Brazil, and subjected to chemical fractionation of P. Phosphorus application, especially to the 30-year-old vineyard 2, increased the inorganic P content down to a depth of 20 cm, mainly in the labile fractions extracted by anion-exchange resin and NaHCO3, in the moderately labile fraction extracted by 0.1 and 0.5 mol L-1... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phosphate fertilization; Eutrophication; Vineyards. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000200018 |
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| Pias,Osmar Henrique de Castro; Tiecher,Tales; Cherubin,Maurício Roberto; Mazurana,Michael; Bayer,Cimélio. |
| ABSTRACT Sulfur (S) fertilization recommendations for grain crops in Brazil were formerly established from studies on crops with a low yield potential grown on soils under conventional tillage (CT). However, the subsequent adoption of no-tillage (NT) altered S dynamics in the soil, making it necessary to carefully evaluate the applicability of these S fertilizer recommendations. In addition, the emergence of modern high-yield-potential genotypes, the successive application of concentrated low-sulfur fertilizers, and reduction in S atmospheric deposition have raised the likelihood of positive responses of crops to S fertilization. Available literature reports contrasting crop responses to S fertilization in Brazilian soils, ranging from substantial gains to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sulfur fertilizer rate; Available SO42--S content; Climate zone; Plant nutrition; Sustainable fertilizer management. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100506 |
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| Schmitt,Djalma Eugênio; Comin,Jucinei José; Ceretta,Carlos Alberto; Gatiboni,Luciano Colpo; Tiecher,Tales; Lorensini,Felipe; Heinzen,Janaina; Ambrosini,Vítor Gabriel; Moraes,Marcel Pires de; Brunetto,Gustavo. |
| In vineyards, if phosphate is applied both before planting and at intervals during growth without consideration of technical criteria, the soil P fractions may be increased and their proportions altered. This study was carried out to evaluate the accumulation of P fractions and the parameters of the adsorption isotherm in a sandy Typic Hapludalf soil in vineyards with a history of successive and excessive phosphate fertilization. In December 2010, two vineyards were selected, one 4 and the other 15 years old, in Urussanga, State of Santa Catarina (Brazil). Three trenches were dug in each area and soil was collected from the 0-5, 5-10 and 10-20 cm depth ranges. The soil samples were dried in a forced-air oven, sieved and subjected to chemical analyses, P... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phosphate fertilization; Phosphorus chemical fractionation; Phosphorus adsorption isotherms; Environmental contamination; Vitis sp. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000500015 |
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| Oliveira,Leandro Bittencourt de; Tiecher,Tales; Quadros,Fernando Luiz Ferreira de; Trindade,José Pedro Pereira; Gatiboni,Luciano Colpo; Brunetto,Gustavo; Santos,Danilo Rheinheimer dos. |
| A maioria das pastagens naturais no bioma Campos no sul do Brasil cresce em solos com baixa disponibilidade de fósforo (P), mas com altos teores de P total e de P orgânico. Este trabalho objetivou avaliar as alterações nas formas de P no solo, ao longo de um ciclo de crescimento de pastagens naturais, decorrentes da aplicação de fontes de fosfato. Em três experimentos instalados em áreas de pastagem natural, foi aplicado P nas formas de hiperfosfato de Gafsa, superfosfato triplo e testemunha, arranjados em blocos casualizados com três repetições. Nos experimentos instalados no município de Candiota, RS, em pastagens naturais sob Luvissolo Úmbrico e Neossolo Litólico, foram aplicados 100 kg ha-1 de P2O5 em setembro de 2010. Na pastagem sob Argissolo... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fósforo microbiano; Disponibilidade de fósforo; Ecossistemas campestres; Fosfato solúvel e natural. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000300018 |
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| Guardini,Renato; Comin,Jucinei José; Santos,Danilo Rheinheimer dos; Gatiboni,Luciano Colpo; Tiecher,Tales; Schmitt,Djalma; Bender,Marcos Antônio; Belli Filho,Paulo; Oliveira,Paulo Amando Victoria de; Brunetto,Gustavo. |
| Successive applications of pig litter to the soil surface can increase the phosphorus (P) content and alter its adsorption, promoting P transfer to surface or subsurface waters. The purpose of this study was to evaluate P accumulation and the pollution potential of a soil after application of pig litter. In March 2010, eight years after the installation of an experiment in Braço do Norte, Santa Catarina, SC, Brazil, on a Typic Hapludult, soil was sampled (layers 0-2.5, 2.5-5, 5-10, 10-15, 15-20 and 20-30 cm) after the following fertilization treatments: no pig litter fertilization, pig slurry application and pig manure application. In this period, 694 and 1,890 kg P2O5 ha-1 were applied in the treatments with pig slurry and pig manure, respectively. The P... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organic fertilization; Deep litter; Environmental contamination. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000400027 |
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| Tiecher,Tales; Santos,Danilo Rheinheimer dos; Kaminski,João; Calegari,Ademir. |
| The cultivation of crops with different capacity of P uptake and use under long-term soil tillage systems can affect the distribution of P cycling and inorganic forms in the soil, as a result of higher or lower use efficiency of P applied in fertilizers. The purpose of this study was to evaluate the effect of long-term cultivation of different winter species under tillage systems on the distribution of inorganic P forms in the soil. In 1986, the experiment was initiated with six winter crops (blue lupin, hairy vetch, oat, oilseed radish, wheat and fallow) on a Rhodic Hapludox in southwestern Paraná, under no-tillage (NT) and conventional tillage (CT). The application of phosphate fertilizer in NT rows increased inorganic P in the labile and moderately... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: No tillage; Conventional tillage; Lability; Phosphorus fractionation; Cover crops; Soil management. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000100028 |
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| Ferreira,Paulo Ademar Avelar; Ceretta,Carlos Alberto; Tiecher,Tales; Facco,Daniela Basso; Garlet,Luana Paula; Soares,Cláudio Roberto Fonsêca Sousa; Soriani,Hilda Hildebrand; Nicoloso,Fernando Teixeira; Giachini,Admir José; Brunetto,Gustavo; Cornejo,Pablo. |
| ABSTRACT Crotalaria juncea is used as plant cover in grape vineyards in Brazil, which usually present soils with high copper (Cu) levels due to the application of Cu-based phyto-sanitary products. Under this condition an increase growth and cover of C. juncea is needed to improve the phytoremediation processes in those soils. Some alternatives to achieve this condition is the inoculation with arbuscular mycorrhizal fungi (AMF), which has demonstrated an important increase of plant growth in Cu-contaminated soils at different soil P levels. The aims of this study were to evaluate the effect of AMF inoculation in soils with high Cu contents on the growth of C. juncea, the acid phosphatase (APase) enzyme activity in plants and soil, and the presence of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytoremediation; Leguminous; FMA; Vineyards. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100526 |
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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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| Tiecher,Tales; Zafar,Mohsin; Mallmann,Fábio Joel Kochem; Bortoluzzi,Edson Campanhola; Bender,Marcos Antonio; Ciotti,Lucas Henrique; Santos,Danilo Rheinheimer dos. |
| Phosphate release kinetics from manures are of global interest because sustainable plant nutrition with phosphate will be a major concern in the future. Although information on the bioavailability and chemical composition of P present in manure used as fertilizer are important to understand its dynamics in the soil, such studies are still scarce. Therefore, P extraction was evaluated in this study by sequential chemical fractionation, desorption with anion-cation exchange resin and 31P nuclear magnetic resonance (31P-NMR) spectroscopy to assess the P forms in three different dry manure types (i.e. poultry, cattle and swine manure). All three methods showed that the P forms in poultry, cattle and swine dry manures are mostly inorganic and highly... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organic amend; Phosphorus bioavailability; Phytate; Phosphorus fractionation. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000500016 |
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| Tiecher,Tales; Minella,Jean Paolo Gomes; Miguel,Pablo; Alvarez,Jimmy Walter Rasche; Pellegrini,André; Capoane,Viviane; Ciotti,Lucas Henrique; Schaefer,Gilmar Luiz; Santos,Danilo Rheinheimer dos. |
| O conhecimento das principais fontes difusas de produção de sedimento pode aumentar a eficiência de utilização dos recursos públicos, investidos em estratégias de gestão em bacias hidrográficas, que visem mitigar a transferência de sedimentos aos cursos d'água. Objetivou-se com este trabalho avaliar as fontes de sedimentos numa bacia hidrográfica rural de cabeceira com predomínio de cultivos anuais sob plantio direto e com intensa e inadequada exploração dos recursos naturais, por meio da quantificação da contribuição relativa das estradas e das lavouras na produção global de sedimentos. A bacia hidrográfica está localizada no município de Júlio de Castilhos, Rio Grande do Sul. O período de estudo foi de maio de 2009 a abril de 2011. Para a identificação... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fingerprinting; Elementos traçadores naturais; Erosão hídrica. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000200028 |
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| Coelho,Fabrício Fernandes; Giasson,Elvio; Campos,Alcinei Ribeiro; Tiecher,Tales; Costa,José Janderson Ferreira; Coblinski,João Augusto. |
| ABSTRACT: In Brazil several digital soil class mapping studies were carried out from 2006 onwards to maximize the use of existing maps and information and to provide estimates for wider areas. However, there is no consensus on which methods have produced superior results in the predictive value of soil maps. This study conducts a systematic review of digital soil class mapping in Brazil and aims to analyze the factors which can improve the accuracy of digital soil class maps. Data from 334 digital soil class mapping studies were grouped and analyzed by Student's t-test, Wilcoxon-Mann-Whitney test and Kruskal-Wallis test. When conventional maps were used for validation, the studies showed average values of 63 % and when field samples were used, 56 % for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pedology; Mapping unit density; Artificial neural networks; Soil-forming factors; Overall accuracy. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000501401 |
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| Tiecher,Tales; Brunetto,Gustavo; Rheinheimer,Danilo; Gatiboni,Luciano Colpo; Comin,Jucinei José; Schmitt,Djalma Eugênio; Tiecher,Tadeu Luis; Ambrosini,Vítor Gabriel. |
| ABSTRACT: This study evaluated P pools after nine years of successive application of either pig slurry (PS) or deep pig litter (DL) in a no-till Ultisol from southern Brazil. The experiment was established in Dec 2002 with the treatments control, application of 90 and 180 kg N ha−1 N as PS and as DL. In Mar 2010, soil samples were taken at six layers up to 30 cm deep. Total organic and inorganic P were assessed by the ignition method, and P compounds classes were evaluated by 31P-NMR spectroscopy. Total soil P increased proportionally with the P amount applied via DL and PS. Only DL application increased soil organic P, mainly at the highest dose and in the uppermost soil layers. The application of high doses of manure to these soils under no-till to meet... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: P-NMR; Organic P; Manure; Orthophosphate. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000301403 |
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| Tiecher,Tales; Santos,Danilo Rheinheimer dos; Rasche,Jimmy Walter Alvarez; Brunetto,Gustavo; Mallmann,Fábio Joel Kochem; Piccin,Rogério. |
| Em solos com baixos teores de argila e matéria orgânica pode haver menor disponibilidade de enxofre (S) e, por esse motivo, espera-se que a adubação sulfatada incremente a produção das culturas. O trabalho objetivou avaliar a resposta de culturas e a disponibilidade de S em solos com diferentes teores de argila e matéria orgânica, submetidos à adubação sulfatada. O experimento foi realizado em vasos em casa de vegetação no período de agosto de 2004 até janeiro de 2008. Foram realizados nove cultivos sucessivos de plantas em quatro tipos de solos, submetidos à aplicação de quatro doses de S. Avaliou-se a produção de matéria seca e o acúmulo de S na parte aérea das plantas e o teor do elemento disponível no solo das camadas 0 - 10 e 10 - 20 cm. As plantas do... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Matéria seca; Acúmulo de enxofre; Nível de suficiência de enxofre; Percolação de sulfato. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052012000400010 |
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| Schmitt,Djalma Eugênio; Brunetto,Gustavo; Santos,Elaine dos; Wagner,Winiciu de Lima; Sete,Paula Beatriz; Souza,Monique; Ambrosini,Vítor Gabriel; Santos,Matheus Ademir dos; Tiecher,Tales; Comin,Jucinei José; Couto,Rafael da Rosa; Gatiboni,Luciano Colpo; Giachini,Admir. |
| ABSTRACT Phosphorus (P) applications at dosages higher than the necessary may cause P buildup in the soil labile fractions and, consequently, pollution of water sources. This study aimed to assess accumulation of P fractions as well as the parameters of adsorption isotherms in soil profiles having a history of application of phosphate fertilizers and cultivated with apple trees. Soil samples were collected from an area with no history of cultivation and 2 apple orchards cultivated for 8 (P8) and 18 (P18) years, in the city of Urubici, Santa Catarina, southern Brazil. Soil samples were air dried, sieved in a 2-mm mesh, and subjected to chemical analyses (P adsorption) besides P chemical fractionation. Applications of phosphate fertilizers to the orchards,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Apple orchard; Phosphate fertilization; P chemical fractionation. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000300422 |
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| Capoane,Viviane; Tiecher,Tales; Schaefer,Gilmar Luiz; Ciotti,Lucas Henrique; Santos,Danilo Rheinheimer dos. |
| Neste trabalho, foram avaliadas as concentrações de fósforo (P) solúvel e nitrato nas águas dos canais de drenagem de uma bacia hidrográfica, com agricultura e produção pecuária intensiva do Sul do Brasil, a fim de avaliar os impactos das atividades agropecuárias no ecossistema aquático. Amostras de água foram coletadas em 11 pontos nos canais de drenagem em três períodos distintos. Coletas diárias, por um período de 30 dias, foram efetuadas no médio curso e no exutório da bacia hidrográfica. As concentrações de nitrato e P solúvel foram maiores nas áreas mais antropizadas e com granjas de suínos próximas a cursos d'água. Nas coletas diárias, observou-se que as concentrações de P mudaram consideravelmente nos dias de chuva, mas a concentração de nitrato... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dejetos animais; Suinocultura intensiva; Pressão antrópica; Eutrofização. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000400647 |
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| Registros recuperados: 21 | |
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