A fixação do N2 por duas espécies de tremoceiro em diferentes sistemas de gestão do solo. Transferência do N2 fixado pela tremocilha para o eucalipto em consociação

Autores

  • Corina Carranca
  • Manuel Madeira
  • Maria Odete Torres

DOI:

https://doi.org/10.19084/rca.16286

Resumo

Grain legumes are grown worldwide and cultivated primarily for their grains which are harvested at maturity and marketed as fresh or dry products, rich in proteins for human consumption and animal feeding. However, their cultivation has been neglected for many years in the European Union (EU), which only produces about five million tonnes, especially peas (3 Mt), fababeans (1.2 Mt) and soybeans (0.8 Mt), and imports two-thirds of protein required for feed uses (Crépon et al., 2004). Grain legumes are expected to increase the eco-efficiency of agricultural production due to their ability to produce proteins of high quality without using nitrogen (N) fertilisers (Gaillard and Nemecek, 2004). In this way, it is supposed that energy use by grain legumes and N losses (nitrate, ammonia, etc.) are much lower than in non-legume crops. The current European Common Agricultural Policy favours the introduction of grain legumes in crop rotations where they are economically beneficial for farmers in several regions by their value to the next crop, but no specific financial support has been decided yet.

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Publicado

2019-01-03

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