INIA EN LA RURAL DEL PRADO 2025. Descubra este y otros contenidos para diferentes sistemas productivos. -- CONTENIDO: EDITORIAL: Sembrar ciencia para cosechar oportunidades y futuro. -- INIA POR DENTRO:  Nuevos directores de sistemas. -- CULTIVOS: Un nuevo enfoque para la fertilización nitrogenada en maíz. -- Nueva variedad de Soja-INIA: GÉNESIS 6401. -- Preemergentes, rotación y combinación de herbicidas. -- AGROALIMENTOS: Primera cuantificación de la huella ambiental citrícola del Uruguay.

ABSTRACT.- Background: Likelihood-based inferences such as variance components estimation and hypothesis testing need logarithms of the determinant (log-determinant) of high dimensional matrices. Calculating the log-determinant is memory and time-consuming, making it impossible to perform likelihood-based inferences for large datasets. Conclusions: The method presented in this study allows to approximate the log-determinant of positive semi-definite matrices and, therefore, the likelihood for datasets of any size.

CONTENIDO: I. Presentación. -- II. Caracterización de la zafra 2024/2025. (Claudia Marchesi, Jesús Castillo, Alexandra Ferreira). -- III. Evaluación de cultivares de arroz. (Claudia Marchesi). -- 3.1. Manejo de los ensayos. (Claudia Marchesi, Jesús Castillo, Alexandra Ferreira, Sebastián Martínez, Mario Villalba). -- IV. Resultados experimentales. -- 4.1. Rendimiento en grano Seco y Limpio. -- 4.2. Rendimiento en Grano Sano, Seco y Limpio. -- 4.3. Calidad industrial. -- 4.3.1. Porcentaje de Cargo. -- 4.3.2. Porcentaje de Blanco. -- 4.3.3. Porcentaje de Entero. -- 4.3.4.

Latin America (LA) is a major producer and exporter of animal and plant-based food products, of which plant product yields rely heavily on entomophilous pollination; with bees being the major pollinators. We aim to promote the integration of apiculture and meliponiculture into diversified agricultural systems, aided by knowledge-based actions, to produce quality foods for our populations; taking into account environmental conservation, the local cultural heritage, and the rational use of our natural resources.

Uruguay is a territorially small country but with a beekeeping sector economically and socially relevant. The varroosis was the disease with greater economic damage for the chain. These results are a first snapshot of the quantification of the economic cost of bee health and should be considered in the design of politics for improve the sustainability of the beekeeping sector.