Productividad de festuca bajo manejos de intensidad y frecuencia contrastantes

This final degree dissertation examines the impact of different defoliation intensity and frequency managements on the productivity of Festuca arundinacea var. Estanzuela Tacuabé, a perennial grass essential for pasture-based systems in Uruguay. The objectives included quantifying dry matter production, botanical composition, and the effects on pasture structure during the second year of establishment. The study, conducted at the Dr. Mario A. Cassinoni Experimental Station, tested two grazing frequencies (2 and 4 leaves) and two defoliation intensities (30% and 70%) in a randomized complete block design. Results indicated that high frequency (2 leaves) combined with moderate intensity (30%) optimized growth rates in winter, while higher intensity (70%) favored regrowth under spring’s water stress conditions. Contrasting management strategies significantly affected fescue persistence and pasture composition. This research highlights the importance of tailoring management practices to seasonal conditions to maximize productivity without compromising system sustainability. These findings provide valuable insights for improving the efficiency and sustainability of pasture-based livestock systems in Uruguay.