Sustainability of water quality and quantity in Merín Lagoon (ML) basin has become an issue of concern, recognizing nutrient runoff from agricultural environment as one of the major sources influencing water impairment. The main area of rice cultivation in Uruguay is located in this watershed.

Integrated rice-livestock systems were key for a sustained yield increase with decent resource-use efficiency and environmental indicators during 50 yrs. in Uruguay. The increased trends for intensification in cropping systems may prompt rice-livestock systems for decoupling and losing synergies. We summarize evidence about the sustainability of rice-livestock systems in Uruguay using indicators from farm data and a long-term experiment.

The aims of this study were to assess the long-term effects of different CPR on SOC stocks on the subsoil, and to draw conclusions about the capacity of CPR to sequester C in Uruguay.We conclude that incorporating pastures in continuous crop sequences increased soil organic carbon stocks through the soil profile by an average of 28%.

Soil organic carbon (SOC) sequestration is key in mitigating climate change. Rice systems rotated with perennial pastures are being intensified in South America to increase annual grain productivity, but the effects on SOC and rice yield remain poorly understood. These results highlight insights for the design of rice-based rotations that increase or sustain SOC and increase rice yield, helping simultaneously meet climate change and food production goals.

El análisis de la dinámica de la respuesta en desempeño animal a la suplementación invernal sobre campo natural, en una amplia serie de experimentos, reveló marcadas diferencias en su fase inicial. Específicamente, la presencia o no de un período de entre 400 y 800 grados.día* durante el cual la suplementación no mejora el desempeño animal y que, por ende, impacta negativamente en la eficiencia. En parte, estas diferencias están asociadas a la disponibilidad de forraje, la tasa de sustitución y el clima.