A Escola Superior Agrária do Instituto Politécnico de Bragança (Portugal) tem desenvolvido e participado em projetos relacionados com a valorização de produtos e sub-produtos de origem vegetal, tais como o projeto “AGRINNDIF - Mejora de la competitividad del sector agrario de Castilla y León y Norte de Portugal através de la innovación y el desarrollo de productos diferenciados de alto valor”, financiado pelo P...
A quantidade de folhada restituída anualmente aos ecossistemas e a sua decomposição são processos vitais para uma gestão sustentável uma vez que regulam o ciclo do carbono e de nutrientes no solo. A folhada é um importante reservatório de elementos minerais constituindo a principal via de restituição de nutrientes ao solo. É também, muitas vezes, o principal componente da produtividade primária líquida acima do...
As modificações causadas pela extração do material lenhoso em corte final podem exercer grande influência no armazenamento de carbono e nutrientes do solo. No presente trabalho avalia-se o impacte de um corte final de regeneração no stock de carbono e nutrientes do solo num povoamento de castanheiro bravo (Castanea sativa Mill.) explorado em alto-fuste. O povoamento situado na serra da Padrela (41º 31’ 47” N, 7...
In 2006 European Union bans the use of antibiotics as growth promoters (AGP) in animal feed. Due to the fact that the use of antibiotics as growth promoters has been banned intensive research has focused on the development of alternative strategies with the aim of maintenance of animal health and performance. Some studies showed that olive leaves have specific organic compounds with antimicrobial activities. Th...
Table olives are one of the most popular agro-fermented food products in the Mediterranean basin. In Portugal, there is a great tradition of table olives production, being Trás-os-Montes one of the most important producing regions. Their tradition, sensorial and chemical characteristics justify the creation of a new Protected Designation of Origin “Azeitonas de mesa Transmontanas”. In this context, the objectiv...
Microbial biomass and soil respiration are major indicators of the soil biological fertility which can be affected by soil management practices. The aim of this study was the evaluation of the effect of three ground-cover treatments, imposed to an olive orchard, on soil microbial biomass and activity. The ground-cover treatments were: Natural vegetation (Nat veg); Natural vegetation fertilized with 60 kg N ha-1...
Legume can fix atmospheric N and sequester carbon. Some legumes are able to uptake sparingly soluble soil phosphorus. Additionally, all those effects may contribute to a beneficial increase in soil microbial activity. In this work three ground-cover treatments were imposed to an olive orchard located in NE Portugal: Natural vegetation (Nat veg); Natural vegetation fertilized with 60 kg N ha-1 yr-1 (Nat veg +N);...
The annual amount of litter returned to the ecosystems and their decomposition processes are vital for sustainable management since that regulate the carbon cycle and soil nutrients pools. However, the methodology used for their assessment can significantly influence the obtained estimates concerning to the produced biomass and the potential return of nutrients to the soil and carbon sequestration. This study c...
Forests fix carbon dioxide from the atmosphere and sequester it in biomass, timber products and soils (stock effect). Soil organic carbon (SOC) is the major stock of the terrestrial biosphere with great importance for the balance of carbon at the global scale. Nowadays, a reliable estimate of the stored C, in the mineral soil pool of forest ecosystems, is of great importance in helping Governments to make decis...
As modificações causadas pela extração do material lenhoso em corte final podem exercer grande influência no armazenamento de carbono e nutrientes do solo. No presente trabalho avalia-se o impacte de um corte final de regeneração no stock de carbono e nutrientes do solo num povoamento de castanheiro bravo (Castanea sativa Mill.) explorado em alto-fuste. O povoamento situado na serra da Padrela (41º 31’ 47” N, 7...
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