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Échantillons de traduction proposés: 1
portugais vers anglais: Scientific presentation
Texte source - portugais INTRODUÇÃO
A proliferação de plantas invasoras em áreas utilizadas para cultivos agrícolas e pastagens contribui para a queda na produtividade do terreno e para o abandono da área pouco tempo após a instalação (Fernandes et al., 1993). Devido às restrições econômicas e ambientais ao uso de herbicidas, o controle mecânico de plantas invasoras é uma antiga técnica que precisa ser reestruturada para ser usada em programas de manejo integrado. Tais programas devem ser auxiliados por um completo entendimento da dinâmica das populações das espécies (Fernandes-Quintanilla, 1988), que começa pelo estudo dos bancos de sementes.
Bancos de sementes caracterizam-se como o estoque de sementes acumulado no solo (Cavers, 1995) e representam um papel ecológico muito importante no suprimento de novos indivíduos para as comunidades ao longo do tempo (Carmona, 1992). O objetivo deste trabalho foi estimar parte do potencial de regeneração natural de áreas com sistemas agroflorestais.
Traduction - anglais INTRODUCTION
The proliferation of weeds in areas used for crops and pasture contributes to the drop in productivity of the land and to the abandonment of the land soon after installation (Fernandes et al., 1993). Due to economic and environmental restrictions on the use of herbicides, mechanical control of weeds is an old technique that needs to be restructured to be used in integrated management programs. Such programs should be assisted with a full understanding of the population dynamics of the species (Fernandes-Quintanilla, 1988), which begins with the study of the seed bank.
Seed banks are the stock of seeds accumulated in the soil (Cavers, 1995) and play a very important ecological role in the supply of new individuals to communities over time (Carmona, 1992). The objective of this work was to estimate part of the natural regeneration potential of areas with agroforestry systems.
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