ABSTRACT.- Alligator weed, Alternanthera philoxeroides (Mart.) Griseb. (Amaranthaceae) is an aggressive invader in waterways and pastures throughout most of the southeastern U.S.A., and California. Three insect biological control agents have provided substantial control of aquatic A. philoxeroides in the warmer parts of its range in the U.S.A. However, these insects are less effective against A. philoxeroides in riparian-terrestrial habitats.

ABSTRACT.- A comprehensive understanding of how native grasslands (rangelands) respond to chronic nutrient addition requires considering interactions with climate variability, water availability in particular, and with stocking rate management. We assessed animal production responses to phosphorus plus nitrogen fertilization sustained over a decade on a highly diverse subtropical grassland. ©2024 The Society for Range Management. Published by Elsevier Inc.

ABSTRACT.- Improvements in nitrogen use efficiency can be achieved through fertilizer management strategies that capitalize on nutrient synergies. However, limited research on synergies between nitrogen, sulfur, and calcium complicates understanding causal links and developing sustainable management. In this regard, the effects of different nitrogen sources on productivity and nitrogen use efficiency in Italian ryegrass (Lolium multiflorum Lam.) and pearl millet (Pennisetum glaucum (L.)), along with their impacts on forage quality and secondary production, were investigated.

ABSTRACT.- Accurate prediction of phenology is the most critical aspect for the development of models aimed at estimating seed yield, particularly in species that exhibit variable sensitivity to environmental factors throughout the cycle and among genotypes. With this purpose, we evaluated the phenology of 34 soybean varieties in field experiments located in Argentina, Uruguay and Paraguay.

Caracterización productiva de núcleos INIA de las razas Corriedale, Merino y Dohne. Descubra éste y otros contenidos para diferentes sistemas productivos:Majadas conectadas genéticamente; Evaluación genética por raza; Núcleos informativos para nuevas tecnologías. CONTENIDO:INIA POR DENTRO:Visita de la viceministra de alimentación y agricultura germana y su delegación. -- 25 años de Revista Agrociencia Uruguay. -- HORTIFRUTICULTURA:Análisis rápido de suelo a nivel de predio por el método de dilución 1:2.

Conocer la relación entre la tenencia de la tierra y la superficie de bosques resulta clave para definir acciones de conservación frente al avance de las fronteras agropecuarias.

En Uruguay el campo natural (CN) representa el sustento de la ganadería extensiva. Entre las prácticas de intensificación productiva, se encuentran los mejoramientos extensivos (CNM; fertilización con fósforo y siembra de leguminosas) para incrementar la calidad de forraje. E

ABSTRACT.- In 2022 and 2023, samples of soybean stems showing symptoms of soybean stem canker were collected in the Departments of Rio Negro, San José and Colonia, Uruguay.