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| Registros recuperados: 10 | |
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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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| Brunetto,Gustavo; Benedet,Lucas; Ambrosini,Vítor Gabriel; Comin,Jucinei Jose; Melo,George Wellington Bastos de; Santos,Matheus Ademir dos; Lourenzi,Cledimar Rogério; Loss,Arcangelo; Belli Filho,Paulo; Schmitt,Djalma Eugênio; Couto,Rafael. |
| ABSTRACT The present study aimed to evaluate the accumulation and distribution of Cu and Zn fractions in the profile of an Inceptisol by application of fungicides with a previous history of apple cultivation in southern Brazil. Stratified soil samples (0.0 – 0.025 m, 0.025 –0.050 m, 0.05 – 0.10 m, 0.10 – 0.15 m, 0.15 – 0.20 m and 0.20 – 0.40 m depth) were collected in two apple orchards (8 years old and 18 years old), and in a native pasture area adjacent to the orchards. The soil was subjected to analysis of physical and chemical properties and to chemical fractionation of Cu and Zn. The fractions of soluble, exchangeable, organic, residual and total Cu and Zn accumulated in the topsoil (0.0 – 0.025 m) of the orchards, being higher in the orchard... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Malus domestica; Trace elements; Toxicity; Environmental contamination. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000200333 |
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| Ambrosini,Vítor Gabriel; Voges,Joana Gerent; Canton,Ludiana; Couto,Rafael da Rosa; Ferreira,Paulo Ademar Avelar; Comin,Jucinei José; Melo,George Wellington Bastos de; Brunetto,Gustavo; Soares,Cláudio Roberto Fonsêca Sousa. |
| Abstract High copper (Cu) levels in uprooted old vineyard soils may cause toxicity in transplanted young vines, although such toxicity may be reduced by inoculating plants with arbuscular mycorrhizal fungi (AMF). The objective of this study was to evaluate the effects of AMF on the plant growth, chlorophyll contents, mycorrhizal colonization, and Cu and phosphorus (P) absorption in young vines cultivated in a vineyard soil contaminated by Cu. Commercial vineyard soil with high Cu levels was placed in plastic tubes and transplanted with young vines, which were inoculated with six AMF species (Dentiscutata heterogama, Gigaspora gigantea, Acaulospora morrowiae, A. colombiana, Rhizophagus clarus, R. irregularis) and a control treatment on randomized blocks... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mycorrhizae; Trace elements; Phosphorus; Vitis sp. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000401045 |
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| Brunetto,Gustavo; Cella,Cesar; Miotto,Alcione; Girotto,Eduardo; Lorensini,Felipe; Brackmann,Auri; Ceretta,Carlos Alberto; Schorr,Márcio Renan Weber; Both,Vanderlei; Ambrosini,Vítor Gabriel. |
| ABSTRACT: Little is known about the impact of N fertilization on fruit production and composition in orange groves grown in soils with low or medium organic matter content in Rio Grande do Sul (RS). This study aimed to evaluate how N fertilization of orange trees cv. 'Lane Late' in a sandy soil may interfere in fruit yield and composition of fruit and juice. The experiment was conducted with orange trees cv. 'Lane Late' growing in Sandy Typic Hapludalf soil, in Rosário do Sul (RS). The plants received applications of 0, 20, 40, 60, 80, 100, 120, 140 and 160kg N ha-1. Total N in leaves, number of fruits per plant, yield, fresh weight, fruit diameter, peel thickness, percentage of fruit juice, peel color, juice color, ascorbic acid content, total soluble... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nitrogen; Leaf analysis; Fruit quality; Citrus sinensis L. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300253 |
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| Comin,Jucinei José; Ambrosini,Vítor Gabriel; Rosa,Daniel José; Basso,Alex; Loss,Arcângelo; Melo,George Wellington Bastos de; Lovato,Paulo Emílio; Lourenzi,Cledimar Rogério; Ricachenevsky,Felipe Klein; Brunetto,Gustavo. |
| ABSTRACT: Soils which are cultivated with grapevines have high available copper (Cu) content, which can be toxic to cover crops cohabiting vineyards, such as black oats. This study aimed to assess the effect of liming in reducing Cu toxicity in black oats grown in sandy soils. Samples of a Typic Hapludalf were collected at 0-20cm, dried and subjected to the addition of Cu (0 to 50Mg kg-1) and limestone (0, 1.5, and 3.0Mg ha-1). The soil was placed in a rhizobox and black oats were grown for 30 days. We assessed root and shoot dry matter production, copper (Cu), calcium (Ca) and magnesium (Mg) contents in the tissues; Cu content in the root symplast and apoplast, as well as Cu, carbon and pH values in the rhizosphere and bulk soil. Liming reduced Cu... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Heavy metal; Phytotoxicity; Limestone; Rhizosphere.. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000400252 |
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| Brunetto,Gustavo; Oliveira,Bruno Salvador; Ambrosini,Vítor Gabriel; Couto,Rafael da Rosa; Sete,Paula Beatriz; Santos Junior,Elano dos; Loss,Arcângelo; Silva,Lincon Oliveira Stefanello da; Gatiboni,Luciano Colpo. |
| ABSTRACT: Weed management in apple orchards (Malus domestica) can affect the leaching of nitrogen (N) in soil. The study aimed to evaluate the potential leaching of N forms in soil of an apple orchard with different weed management treatments. The experiment was conducted in an apple orchard implanted in 2008. In October 2011, 80 plants were selected and the following treatments were implemented: no weed management (NM), desiccation of weeds on the tree row with herbicide use (DR) and mechanical mowing of weeds on the tree row (MR). Yield was evaluated in the 2011/2012, 2012/2013 and 2013/2014 crop seasons. In May 2012 porous cup lysimeters were installed in the NM, DR and MR treatments. In the solution collected at 0.20m, NH4 +-N and NO3 --N were analyzed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mineral N; Nitrate; Ammonia; Malus domestica. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000500251 |
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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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| 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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| Oliveira,Bruno Salvador; Ambrosini,Vítor Gabriel; Lovato,Paulo Emilio; Comin,Jucinei José; Ceretta,Carlos Alberto; Santos Junior,Elano dos; Santos,Matheus Ademir dos; Lazzari,Cleiton Júnior Ribeiro; Brunetto,Gustavo. |
| A aplicação de fontes de nitrogênio (N) em pomar de macieira pode incrementar o teor do nutriente no solo ao longo do ciclo, afetar o estado nutricional e a produção, mas parte do N pode ser perdido por lixiviação. O trabalho objetivou avaliar o teor de N total em folhas, a produção e o fluxo de N no solo e na solução, em um pomar de macieira com a aplicação de distintas fontes de N, em um experimento em Urubici (SC). Plantas foram selecionadas, receberam a aplicação de ureia (U), ureia peletizada (UP) e cama sobreposta de suínos (CS); além de um tratamento sem adubação (SA). Nas safras 2011/2012 e 2012/2013 foram analisados teores de N em folhas completas e mensurados o crescimento das plantas e a produção de frutos. Foram coletadas amostras de solo e de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adubação; Nitrogênio mineral no solo; Malus domestica. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014001202164 |
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| Schmitt,Djalma Eugênio; Borghezan,Marcelo; Ambrosini,Vítor Gabriel; Comin,Jucinei José; Trapp,Talita; Brunetto,Gustavo. |
| Abstract: The objective of this work was to evaluate the yield and must composition of 'Cabernet Sauvignon' and 'Chardonnay' grapevines subjected to phosphorus applications to a soil from a high-altitude region of Southern Brazil, during three crop seasons. Experiments 1 and 2 were carried out in 'Cabernet Sauvignon' and 'Chardonnay' commercial vineyards, respectively, in the municipality of Água Doce, located in the Midwestern region of the state of Santa Catarina. The soil from the two vineyards was classified as a Typic Humicryept. The used source of P was triple superphosphate (45% P2O5). From 2011 to 2013, at flowering, a total of 0, 10, 20, 40, and 80 kg ha-1 P2O5 were applied in the crown projection area, to the soil surface, without incorporation,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis vinifera; Available phosphorus; 'Cabernet Sauvignon'; 'Chardonnay'; High altitude. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2020000102803 |
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| Registros recuperados: 10 | |
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