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| Henriques, Pedro Damiao de Sousa; Carvalho, Maria Leonor da Silva. |
| Este estudo teve como objectivos caracterizar e analisar a evolução, medir os níveis de eficiência técnica e relacionar esta com alguns atributos dos agricultores e das explorações, de uma amostra de explorações vitícolas pertencentes à região Alentejo. Os atributos considerados foram a dimensão física e económica, idade do produtor, natureza jurídica do produtor, tipo de posse da terra, irrigação, tipo de comercialização e especialização cultural e produtiva. A amostra analisada é composta por um painel de explorações, produtoras de uva para vinho para o período 2000-2005, pertencentes à Rede de Informação de Contabilidades Agrícolas, do Ministério da Agricultura, Desenvolvimento Rural e Pescas (MADRP). A caracterização e a análise da evolução das... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Eficiência técnica; Métodos paramétricos; Vinha; Technical efficiency; Parametric methods; Vineyards; Agribusiness; Crop Production/Industries. |
| Ano: 2008 |
URL: http://purl.umn.edu/108930 |
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| Rosa,Jaqueline Dalla; Mafra,Alvaro Luiz; Medeiros,João Carlos; Albuquerque,Jackson Adriano; Miquelluti,Davi José; Nohatto,Marcos André; Ferreira,Evandro Zacca; Oliveira,Odoni Loris Pereira de. |
| The use of cover crops in vineyards is a conservation practice with the purpose of reducing soil erosion and improving the soil physical quality. The objective of this study was to evaluate cover crop species and management systems on soil physical properties and grape yield. The experiment was carried out in Bento Gonçalves, RS, Southern Brazil, on a Haplic Cambisol, in a vineyard established in 1989, using White and Rose Niagara grape (Vitis labrusca L.) in a horizontal, overhead trellis system. The treatments were established in 2002, consisting of three cover crops: spontaneous species (SS), black oat (Avena strigosa Schreb) (BO), and a mixture of white clover (Trifolium repens L.), red clover (Trifolium pratense L.) and annual rye-grass (Lolium... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil management; Soil structure; Vineyards; Viticulture. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000500024 |
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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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| 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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| Aballay,Erwin; Vilches,Oscar. |
| The rootstocks 1103 P, 101-14, K 5BB, SO4, and 3309 were assessed to determine their resistance to the three common Meloidogyne species present in Chilean vineyards, M. ethiopica, the most frequent species, M. hapla and M. javanica. Their response was compared to three ungrafted cultivars, Thompson Seedless, Pinot Noir and Chardonnay. To perform this study, two month-old plants produced from cuttings were inoculated with 5,000 eggs per 3-L pots, filled with steamed substrate and kept in a glasshouse covered with a black mesh to intercept 30% of sun light and avoid heating of the substrates. After a growth period of six months, plants were removed from the pots, and resistance was determined by measuring root weights, the number of galls and eggs per g of... |
| Tipo: Journal article |
Palavras-chave: Plant-parasitic nematodes; Root pests; Vitis vinifera; Vineyards. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000300009 |
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