Production and morphogenetic traits of Megathyrsus maximus “Aruana” with nitrogen fertilization in silvopastoral and full sun systems
DOI:
https://doi.org/10.5433/1679-0359.2023v44n3p1207Keywords:
Morphogenesis, Mineral fertilization, Shading, LAI.Abstract
The objective of this study was to assess the impact of nitrogen fertilization on M. maximus cv. Aruana cultivated in silvopastoral and full-sun systems, focusing on morphogenetic, structural, and productive traits, as well as chemical composition. Silvopastoral systems promote productive efficiency and sustainability in animal husbandry, leading to improved herbage quality and enhanced thermal comfort for the animals. Nitrogen fertilization affects the growth of tropical forages. The study evaluated the system used (silvopastoral or full sun), the presence of fertilization (with or without), and distinct intervals (21, 42, 63, or 84 days) on productive and morphogenetic traits of the forage. The silvopastoral system exhibited increased canopy height, while the full-sun condition favored dry matter production and animal weight gain. Fertilization benefited basal tiller density and morphogenesis. The crude protein content was higher in full sun. Full sun displayed benefits in terms of both herbage production and composition, whereas the silvopastoral system excelled particularly in terms of canopy height. Fertilization improved several traits, fostering tissue turnover. The study highlights the importance of proper management in silvopastoral systems to optimize herbage production and quality.
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