ABSTRACT.- Phosphorus (P) is needed by soybean plants to form vital molecules like ATP and nucleotides and perform plant functions like photosynthesis and Nitrogen biological fixation at nodules. Because P concentration in the soil solution is naturally low, P fertilization is applied to satisfy soybean requirements in high yielding crops. However, a small portion of added P is readily available to the plants, while most is retained by the soil matrix and eventually made available or lost through erosion and run-off to water bodies, where it promotes eutrophication.

ABSTRACT.- Early detection and monitoring of invasive forest pests are crucial for effective pest management, particularly in preventing large-scale damage, reducing eradication costs, and improving overall control effectiveness. This study investigates the potential of machine learning models and remote sensing at various spatiotemporal scales to assess forest damage caused by the woodwasp Sirex noctilio in pine plantations. A Random Forest (RF) model was applied to analyze Planetscope satellite images of Sirex-affected areas in Neuquén, Argentina.

RESUMEN.- En el año 2018 comenzó el proyecto regional latinoamericano "Nuevas tecnologías para el aumento de la eficiencia del uso del agua en la agricultura ALC al 2030 PLAS-ALC", liderado por INIA Chile. Para su desarrollo, se conformó un grupo de investigadores y técnicos referentes en riego de INTA Argentina, INIA Chile, AGROSAVIA de Colombia e INIA Uruguay, con el apoyo de investigadores de la Universidad de Castilla-La Mancha (UCLM), España.

ABSTRACT.- Nitrated fatty acids (NO2-FAs), specifically nitroalkenes, are gaining recognition for their anti-inflammatory and therapeutic properties. Bovine milk, a major dietary component, may serve as a significant source of these bioactive molecules, complementing its established nutritional profile. This study examined nitroalkene's presence in milk from different bovine strains and lactation stages. NO2-conjugated linoleic acid (NO2-cLA) was detected at concentrations up to 5 uM, comprising 2.7% of total cLA.

En el marco de las actividades de difusión que INIA viene desarrollando, se realizó entre los días 4 y 8 de setiembre de 1995 en La Estanzuela, el II Curso sobre Manejo y Fertilidad de Suelos, dando así continuidad a una serie de eventos cuya finalidad es brindar actualización técnica a profesionales ligados a la producción agropecuaria.
La presente publicación recopila la información tratada en el desarrollo del II Curso, ofreciendo a los participantes y a quienes acceden a ella, los más recientes avances científico-tecnológicos alcanzados en la temática tratada.