Havendo alguma evidência de que as leguminosas podem beneficiar as gramíneas pela transferência de azoto fixado seria de todo o interesse utilizar consociações em vez de azevém em estreme fertilizado com azoto. Como conclusões gerais, podemos referir que a utilização do trevo squarroso, em consociação com o azevém anual, se mostrou vantajosa, comparativamente aos outros trevos, pois mostrou tendência para apres...
O levantamento da variabilidade do solo e da vegetação numa pastagem permanente é a base para a gestão diferenciada da fertilização, a qual é o principal instrumento utilizado pelos agricultores na melhoria das pastagens permanentes no Alentejo. O processo tradicional de amostragem e avaliação das características do solo é muito exigente em termos de tempo, de reagentes necessários nas análises e de trabalho ma...
Yield and botanical composition of a given dry-land pasture are heavily influenced by rainfall distribution, and vary according to topography. Through analyzing these parameters, it is possible to identify patterns of spatial distribution, related to topographic characteristics, which can be used to improve spatial management of pasture. The main objective of this project was to assess the role of rainfall, tem...
two-year field trial was conducted to evaluate the effect of supplemental irrigation on increasing and stabilizing yield and quality of forage produced by annual ryegrass in southern Portugal. The following four irrigation treatments were tested: rainfed (control), and irrigation up to 25%,50% and 100% of soil water holding capacity. In both years, the importance of irrigation was evident in order to increase a...
The objective of this research was to evaluate the effect of supplemental irrigation on increasing and stabilizing yield and quality of forage produced by annual ryegrass in Southern Portugal. The following four irrigation treatments were tested: rainfed (control), and irrigation up to 25%, 50% and 100% of soil water holding capacity. The results showed that irrigation doubled the number of harvests, four inste...
Financiadores do RCAAP | |||||||
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