Search

GO-GRASS demonstration results show the importance of supportive business environments that foster innovative, grass-based business. The four business cases havethe potential to deliver improved policies for rural development and rural jobs. The White Paper shows that readiness level of some of these initiatives is above technologyreadiness level (TRL) 7 and that significant market breakthrough requires adequate funding, rules and regulations that do not hinder opportunities, and mechanisms thatvalorise additional benefits such as carbon sequestration.Policy makers can stimulate grassland valorisation and foster new opportunities for farmers and rural businesses by securing grasslands functions as a sustainable sourceof raw materials, a space for social, organisation and business innovations, and an important contributor to carbon removal and climate change mitigation.

This study evaluated the effect of applying 0, 61, 122, 183 and 244 g P 2 O 5 tree -1 to alder trees growing in Typic Udivitrands (Landelina y Vista de Mar) and Entic Udivitrands (Matinilla). It was found that available contents of P increase and content of amorphous Al and Fe and of the pH in NaF decreased in the soils of the 3 plantations. The addition of increasing levels of P to the soil did not alter the foliar concentration of any element significantly. However, with the addition of 61 g P 2 O 5 tree -1 a slight increase was found in the foliar concentration of K in the plantation of Matinilla, and in the content of foliar B in the plantation of Landelina. The addition of P did not cause any difference in the trees’ diameter, height or volume in any of the places during the course of the trial (2 years). Nevertheless, when calculating the relative increase of growth parameters, the treatment of 61 g of P 2 O 5 tree -1 showed the highest growth rate (tree height) in the 3 plantations. The differences in diameter, height and volume between ages were evident from the beginning of the experiment and remained constant during the experiment. In the 3.6 year- old plantation the Current Annual Increment for the analyzed variables is higher than the one found in older plantations, in which it diminishes. The Mean Annual Increment reaches a maximum at 7.5 year of age and then tends to decrease, En este estudio se evaluó el efecto de fer- tilizar con 0, 61, 122, 183 y 244 g P 2 O 5 árbol -1 sobre el crecimiento de árboles de jaúl en suelos Typic Udivitrands (Landelina y Vista de Mar) y Entic Udivitrands (Matinilla). Se determinó que los contenidos disponibles de P aumentaron y los contenidos de Al y Fe amorfo y del pH en NaF disminuyeron con la adición de P. La adición de niveles crecientes de P al suelo no produjo variaciones en la concentración foliar de ningún elemento en forma significativa. Sin embargo, con la adición de 61 g P 2 O 5 árbol -1 se observaron aumentos leves en la concentración foliar de K en la plantación de Matinilla y en el contenido de B foliar en la plantación de Landelina. La adición de P no causó diferencia alguna en el diámetro, la altura o el volumen de los árboles en ninguno de los sitios durante el transcurso del ensayo. Al calcular el incremento relativo de las variables de crecimiento, el tratamiento de 61 g de P 2 O 5 árbol -1 es el que mostró la mayor tasa en altura en las 3 plantaciones. La diferencias en diámetro, altura y volumen entre edades fueron evidentes desde el inicio del experimento y se mantuvieron constantes a lo largo del mismo. En la plantación de 3,6 años el ICA para las variables analizadas es mayor que el encontrado en las plantaciones de mayor edad, en las cuales disminuye. El IMA alcanza un punto máximo a la edad de 7,5 años y luego tiende a disminuir