Abstract:The first reported case of biological control in Uruguay was an attempt to import the parasitoid Encarsia berlesei from Italy to manage the white peach scale in 1912, which failed due to high mortality during the long boat trip. Later introduction of the same parasitoid (in 1913) and the predator Lindorus lophanthae (in 1915) resulted in permanent control of peach scale.

1.Potencial de producción de biomasa con especies forestales. 2.Cultivos energéticos con especies de Eucalyptus. 2.1 Generalidades. 2.2 Aplicación a regiones de Sudamérica. Referencias

Introducción. Materiales y métodos. Diseño experimental. Muestreo de árboles y mediciones. Densidad básica. Funciones de peso. Peso individual, acumulado e incremento medio anual. Análisis estadístico. Resultados. Sobrevivencia. Densidad de la madera. Ajuste de ecuaciones. Peso del fuste individual y por hectárea. Discusión. Sobrevivencia. Densidad de la madera. Selección de ecuaciones de estimación de Pi. Peso del fuste individual y por hectárea e IMA. ?Conclusiones. Referencias.

Abstract:Commercial forestry in Uruguay is mainly based on non-native Eucalyptus and Pinus plantations. Eucalyptus is the most planted genera and covers approximately 730,000 ha. Currently, forest products represent one of the top three exports of the country. Over the last two decades, the number of reported pests that threatens commercial plantations has increased regularly, not only due to accidental introductions of exotic pests but also because of host shift of native pests and diseases from the native forest to the exotic forestry species.

Abstract: Commercial forestry in Uruguay is mainly based on non-native Eucalyptus and Pinus plantations. Eucalyptus is the most planted genera and covers approximately 730,000 ha. Currently, forest products represent one of the top three exports of the country. Over the last two decades, the number of reported pests that threatens commercial plantations has increased regularly, not only due to accidental introductions of exotic pests but also because of host shift of native pests and diseases from the native forest to the exotic forestry species.

Ante el fenómeno de estrés hídrico que se está viviendo con distinta intensidad en diferentes zonas del país, en esta nueva edición de la "Guía de Recomendaciones para los meses postsequía, foco en Ganadería Extensiva" aportamos información y recomendaciones para afrontar las posibles consecuencias en los sistemas ganaderos extensivos.