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Impacto de vários sistemas de gestão do solo na fisiologia da oliveira em condi...
Brito, Cátia Vanessa QueijoA oliveira (Olea europaea L.) é uma espécie bem adaptada às condições edafo-climáticas da região Mediterrânica. Porém, os longos períodos de seca e as altas temperaturas a que está sujeita colocam-na num nível muito baixo de atividade fisiológica, o que vai afetar a sua produtividade e consequentemente a viabilidade económica dos olivais. A conversão dos olivais de sequeiro ao regadio poderia ajudar a resolver ...
Sustainable management of olive rainfed orchards by the introduction of legumin...
Correia, C.M.; Brito, Cátia; Fernandes-Silva, A.A.; Bacelar, E.A.; Gonçalves, B.M.; Ferreira, H.; Arrobas, Margarida; Moutinho-Pereira, J.M.The olive sector has a crucial economic, social, cultural and ecological relevance in the Mediterranean region, where tillage and herbicides application are still generalized practices. However, these practices oppose the recommendations of UE Common Agricultural Policy and thus, management methods that decrease requirement for agricultural chemicals are needed to reduce adverse environmental impacts. Moreover,...
Green manure legumes affect seasonal soil and leaf CO2 exchange rates in an oli...
Correia, C.M.; Brito, Cátia; Fernandes-Silva, A.A.; Bacelar, E.A.; Gonçalves, Berta; Ferreira, Helena; Moutinho-Pereira, J.M.; Arrobas, MargaridaManagement methods that decrease requirement for agricultural chemicals are needed to reduce adverse environmental impacts. Moreover, they can play an important role in atmospheric C02 emission and fixation. We propose green manure legumes to reduce erosion, soil compaction and nitrate pollution, to improve biodiversity, soil carbon sink and fertility, to save fossil fuels and to increase yield and the nutritio...
Short and long-term benefits of white lupin as a cover crop on olive physiology
Brito, Cátia; Moutinho-Pereira, J.M.; Bacelar, E.A.; Gonçalves, Berta; Ferreira, Helena; Santos, D.; Rodrigues, M.A.; Correia, C.M.Several positive effects of cover crops in orchards have been documented, including improvement on soil properties, which are reflected on tree physiological performance and yield. The use of legume species, such as white lupin, can provide other gains since they can fix atmospheric N2, reducing the cost with N fertilizers. However, this species need to be sown every year, which is costly and laborious. So, we ...
Oxidative stress and antioxidant responses in olive tree subjected to cover cro...
Correia, C.M.; Brito, Cátia; Santos, D.; Bacelar, E.A.; Gonçalves, Berta; Ferreira, Helena; Moutinho-Pereira, J.M.; Rodrigues, M.A.Since Mediterranean basin is particularly vulnerable to present and future climate variability and climate change, olive tree will experiment some hard changes in its environment. Under adverse conditions, imbalances in metabolic processes may lead to increased accumulation of ROS, forming a potential threat of oxidative damage to cells. We propose green manure legumes to shift tillage, in order to improve soil...
Water Use Strategies of Plants Under Drought Conditions.
Bacelar, Eunice; Moutinho-Pereira, José; Gonçalves, Berta; Brito, Cátia; Gomes-Laranjo, José; Ferreira, Helena; Correia, CarlosThe growing concerns about water scarcity have focused more attention on water management in agriculture and promotion of water conservation through improved water use efficiency (WUE). Depending on the main purpose of the study, WUE can be estimated at multiple scales, from leaf to whole plant, crop, yield, and ecosystem levels. Drought resistance and WUE are not synonymous and their association is often misun...
Impacto de sistemas de gestão do solo na fisiologia do olival de sequeiro
Brito, Cátia; Bacelar, E.A.; Moutinho-Pereira, J.M.; Gonçalves, Berta; Ferreira, Helena; Santos, D.; Rodrigues, M.A.; Correia, C.M.A oliveira (Olea europaea L.) é uma espécie bem adaptada às condições da região Mediterrânica. Contudo, longos períodos de seca e elevadas temperaturas estivais prejudicam a fisiologia e a produtividade dos olivais de sequeiro. Uma das soluções para minorar este problema passa pela otimização do uso da água através da gestão cuidadosa da superfície do solo. Nesse sentido desenvolveram-se duas experiências em ol...
Cover crops for the sustainability of rainfed olive orchards
Bacelar, Eunice; Correia, Carlos; Santos, Dario; Moutinho-Pereira, José; Gonçalves, Berta; Brito, Cátia; Ferreira, Helena; Rodrigues, ÂngeloOlive tree (Olea europaea L.) is present in large areas of mainland Portugal, predominantly in less-favored regions. In spite of the fact that irrigated areas are currently increasing, most of the olive orchards are still cultivated under rainfed conditions. The success of olive farming under rainfed conditions is mainly due to the high capacity of olive tree to develop anatomical, physiological and biochemical...
Cover cropping effects on olive physiology in rainfed orchards
Gonçalves, Berta; Correia, C.M.; Moutinho-Pereira, J.M.; Bacelar, E.A.; Brito, Cátia; Ferreira, Helena; Rodrigues, M.A.Olive orchards are often cultivated under rainfed conditions, although the irrigated areas are currently increasing. In Trás-os-Montes region, only 5% of the total area harvested is irrigated, and this picture will not change in the near future, due to natural limitation on water resources. Therefore, despite the importance of some high-density and super-high-density orchards that have been planted in the South...
Escola e imigração : integração de crianças do leste europeu na escola do 1.º c...
Brito, Cátia Patrícia Silva da CostaDissertação de Mestrado em Estudos da Criança (Associativismo e Animação Sócio-Cultural) ; A perspectiva multi/intercultural defende uma educação onde a diversidade não é simplesmente constatada, mas também incluída e valorizada no currículo e nas práticas pedagógicas. Na sequência desta ideia o papel dos docentes, no contexto multicultural, revela-se de extrema importância para a inter-relação entre diferente...
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