Publicação
Vegetação infestante da linha ferroviária do Oeste. Controlo químico de Equisetum
| Resumo: | This study presents a characterization of vegetation composition in Oeste railway line of Portugal, owned by REFER EPE, with 196,947 kilometres between the towns of Agualva- Cacém and Figueira da Foz in Western Portugal. At 2010 Spring, inquiries were made at REFER EPE and at 2011 Spring, 109 weed surveys were made in three locations on railway track profile, plus an adjacent area. 372 taxa were recorded and distributed in 75 families, with predominance of Fabaceae, Asteraceae e Poaceae. The taxon Equisetum ramosissimum was the only with a high infestation degree, showing a relative frequency of 30,3% and a mean abundance of 20,7 plants per square metre. The bank area was, in some critical areas, colonized by perennial invasive species. Considering that the genus Equisetum was frequent and abundant, a field assay with different concentrations of flazasulfuron and triclopyr+aminopyralid was carried out. Three months after herbicide application the best efficacy was obtained with 0,30 g L-1 of flazasulfuron (90%) and 1002 g L-1 (80%) triclopyr+aminopyralid. |
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| Autores principais: | Lavrador, Filipe Alexandre Casaca |
| Assunto: | Equisetum railway flora weeds weed management herbicides |
| Ano: | 2011 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade de Lisboa |
| Idioma: | português |
| Origem: | Repositório da Universidade de Lisboa |
| Resumo: | This study presents a characterization of vegetation composition in Oeste railway line of Portugal, owned by REFER EPE, with 196,947 kilometres between the towns of Agualva- Cacém and Figueira da Foz in Western Portugal. At 2010 Spring, inquiries were made at REFER EPE and at 2011 Spring, 109 weed surveys were made in three locations on railway track profile, plus an adjacent area. 372 taxa were recorded and distributed in 75 families, with predominance of Fabaceae, Asteraceae e Poaceae. The taxon Equisetum ramosissimum was the only with a high infestation degree, showing a relative frequency of 30,3% and a mean abundance of 20,7 plants per square metre. The bank area was, in some critical areas, colonized by perennial invasive species. Considering that the genus Equisetum was frequent and abundant, a field assay with different concentrations of flazasulfuron and triclopyr+aminopyralid was carried out. Three months after herbicide application the best efficacy was obtained with 0,30 g L-1 of flazasulfuron (90%) and 1002 g L-1 (80%) triclopyr+aminopyralid. |
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