ABSTRACT.- Amaranth (Amaranthus spp.) resistant to glyphosate and diclosulam represent the most important weed complex in Uruguayan agricultural systems. The objective of this study was to evaluate the use of cover crops (CC) and herbicide strategies (HS) in the management of amaranth. The work was divided into two stages, the first conducted at the field, where the use of CC and pre/post-emergent HS was evaluated. Black oat and Rye were used as CC, and 15 HS (pre and/or post-emergent) were applied to manage amaranth in soybean crops.

ABSTRACT.- The thirtieth anniversary of the Sociedad Uruguaya de Fitopatología -SUFIT- celebrated in 2023, signalled a time of growing depth of the discipline and
marked a milestone in the process of outreach to other fields directly related with plant protection and plant health, like entomology and weed science. © 2024 Informa UK Limited, trading as Taylor & Francis Group

ABSTRACT.- Paspalum L. is a genus of the Poaceae family, with many species serving as well-adapted forage plants in subtropical climates and continuous grazing systems. However, Claviceps paspali, an ascomycete of the order Hypocreales, represents a major threat to Paspalum species. This fungus induces ergot disease, characterized by the replacement of infected flower seeds with sclerotia, which adversely affects seed production and animal health through mycotoxin production.

Correction to: Agroforest Systems, https://doi.org/10.1007/s10457-024-01027-1

ABSTRACT.- Feed efficiency significantly impacts the economics of beef production and is influenced by biological and environmental factors. The rumen microbiota plays a crucial role in efficiency, with studies increasingly focused on its relationship with different rearing systems. This study analyzed 324 rumen samples from bulls and steers categorized as high and low efficiency based on residual feed intake. The animals were fed two diets (postweaning and finishing) and rumen samples were sequenced using a reduced representation sequencing (RRS) based approach.

ABSTRACT.- Our objective was to compare performance and carcass characteristics of backgrounding steers grazing poor quality pasture, receiving energy or protein supplements during summer, and on subsequent finishing period. Sixty Hereford steers (14 months; 348+-3 kg body weight [BW]) were blocked by BW and randomly assigned to one of three treatments (n = 20 per treatment): control (non-supplemented) and supplemented at 0.8% BW with whole grain of corn (CS) or lupin bean (LS) (phase I; 77 days). Over the following 84 days, none of the steers had access to supplement (phase II).

ABSTRACT.- Underutilized sheep and goat breeds can adapt to challenging environments due to their genetics. Integrating publicly available genomic datasets with new data will facilitate genetic diversity analyses; however, this process is complicated by data discrepancies, such as outdated assembly versions or different data formats. Here, we present the SMARTER-database, a collection of tools and scripts to standardize genomic data and metadata, mainly from SNP chip arrays on global small ruminant populations, with a focus on reproducibility.

ABSTRACT.- Context: Implementing heterogeneous rural landscapes with high agricultural diversity and a substantial proportion of natural habitats has been proposed to ensure food production while reducing negative impacts on ecosystem services. However, evidence of an increased supply of ecosystem services (ES) in more heterogeneous landscapes remains limited, with no consensus. Objectives: To evaluate the effect of the spatial cropland system's diversity and landscape configuration on indicators of the supply of ES in agricultural landscapes of the Rio de la Plata Grasslands region.

ABSTRACT.- The leafminer Phytomyza rufipes Meigen, 1830 (Diptera, Agromyzidae) is an oligophagous pest of plants of the family Cruciferae. These include Canola, Brassica napus L. We report the record of P. rufipes in Uruguay, which is confirmed through molecular characterization using DNA barcoding. Characteristic damage symptoms and immature stages of the pest were first confirmed on a Canola crop in Flores, Uruguay. © The authors.

ABSTRACT.- Including hairy vetch (Vicia villosa Roth.) in a crop sequence before maize (Zea mays L.) can enhance the cash crop grain yield and reduce nitrogen (N) fertilizer needs, though the effects are inconsistent. This study aimed to identify the variables influencing maize grain yield response to hairy vetch as a preceding cover crop and N fertilization in maize following hairy vetch. We conducted 70 experiments evaluating four treatments resulting from the inclusion (or not) of hairy vetch previous to maize with and without subsequent N fertilization. © 2024 Elsevier B.V.