In a period of almost three decades, Uruguay built a forest industry based on fast-growing and short rotation eucalypts and pines plantations, beside a policy planned native forests conservation. The government is currently boosting a transition to a bioeconomy that considers the potential of new products, processes, supply chains and markets conformation of both plantations and native forests. Secondary metabolites of native trees hold historically a great potential as non-wood forest products but have remained poorly investigated.

Forest research in Uruguay is a relatively new matter considered since half a century by the academic institutions. For a "forest time scale" is this time a very short one. And for stakeholders that have to be phase in generations, means at least less than two. 1963 began the first forest science lessons as an orientation or specialization by the Forest Science Department at the Agricultural Sciences Faculty. 20 years before, started a technical training curricula to prepare people in forest silviculture at a praxis level. Since 2014 exists an exclusively forest 5-years graduate program.

The bronze bug, Thaumastocoris peregrinus (Heteroptera:Thaumastocoridae) is a small sap feeding hemipteran bug that has become a serious pest of Eucalyptus plantations worldwide. Affected trees display foliage blight and defoliation, thus reducing photosynthesis and sometimes leading to the death of those highly infested mature trees. The use of entomopathogenic fungi as biological control agents is seen as an environmentally friendly alternative for pest control being chemical control seldom used in commercial forestry because its environmental and economical disadvantages.

The bronze bug, Thaumastocoris peregrinus (Heteroptera: Thaumastocoridae) is a small sap feeding hemipteran bug that has become a serious pest of Eucalyptus plantations worldwide. Affected trees display foliage blight and defoliation, thus reducing photosynthesis and sometimes leading to the death of those highly infested mature trees. The use of entomopathogenic fungi as biological control agents is seen as an environmentally friendly alternative for pest control being chemical control seldom used in commercial forestry because its environmental and economical disadvantages.

Teratosphaeria nubilosa severely affects young plantations of Eucalyptus globulus and E. maidenii in Uruguay. This work analyzes the effect of this pathogen on the growth and survival of both species, based on data from a naturally infected field trial. The degree of defoliation was quantified at 21 months old, and its effects on diameter and mortality were evaluated at 62 months old. Defoliation in E. globulus was higher than in E. maidenii, with an average of 52.5 and 28.8%, respectively.

Las saponinas son compuestos tensoactivos cuyas soluciones acuosas pueden formar espuma estable, poseen capacidad emulsionante y forman soluciones micelares con un comportamiento similar al de los detergentes. La mayoría son producidas por plantas [1] y en menor grado por invertebrados marinos [2]. Numerosos reportes han demostrado que éste grupo de compuestos presenta diversas actividades biológicas, entre ellas, actividad antimicrobiana, citotóxica, insecticida, molusquicida y alelopática, si bien sus mecanismos de acción aún son desconocidos en la mayoría de los casos.

Antecedentes, actividad del Grupo de trabajo especial de composición abierta para mejorar el funcionamiento del Sistema multilateral de acceso y distribución de beneficios y posiciones a tomar a nivel país.

CONTENIDO. PRESENTACIONES ORALES Control biológico de insectos plaga, estado del arte y perspectivas - Daniel R.

Introducción:El anegamiento afecta 10% del área global terrestre, produciendo mermas en el rendimiento de los cultivos que pueden variar entre 15% y 80%, dependiendo de las especies, tipo de suelo y duración del estrés(Zhou 2010). En el Cono Sur se está incrementando la frecuencia de situaciones de anegamiento durante el ciclo de crecimiento de los cultivos de invierno (Bidegain 2013).