Asociación de especies arbóreas forrajeras para mejorar la productividad y el reciclaje de nutrimentos

a bibliographical review was made related to the association of fodder tree species for improving the productivity and nutrients recycling in agroecosystems. the covered topics include the situation of actual production systems and strategies to improve their efficiency. also, the contribution of agroforestry systems in nutrient cycling and their improvement through management is discussed. documents on mixed forest plantations and their role in soil fertility, nutrient cycling and biological nitrogen fixation, were also analyzed. it was concluded that fodder tree species in association can contribute to the productivity and sustainability of agroecosystems, since they take up nutrients of high nutritional value and contribute towards the improvement of soil fertility, they produce litter of high-quality in an efficient nutrient recycling, that can improve productivity. furthermore associations of legumes trees species in symbiosis with microorganisms upgrade the availability of soils nutrients. on the other hand, the above-mentioned facts do not depend exclusively on the species, but on the resources available and the management of the agroecosystem. moreover, there is a lack of research studies in this topic, since most research has been conducted in wooden species in forest plantations.