At a strategic moment for agricultural soils, which are expected to contribute climate change mitigation through carbon storage while safely feeding growing world population, the fertiliser strategies used will be key. In calcareous soil with extensive rainfed use and straw removal, different were evaluated aim of determining their effects on crop yield, nitrogen agronomic efficiency, organic t...

Describes field experiments to determine the effects of previous organic waste composts, using different types and application rates, on sunflower yield. Oil, carbohydrates and metal content were evaluated. Experiments were conducted in the Nuclear Research Centre Farm, in sandy, infertile soil. Results show a remarkable increase in dry matter and seed yields, due to previous single compost add...