Nutrient absorption by Marandu grass subjected to shading levels and nitrogen doses in a silvopastoral system

The objective was to evaluate nutrient absorption in Marandu grass influenced by levels of eucalyptus shading in a silvopastoral system (SSP) and N doses, during two years of cultivation. The experimental design adopted was randomized blocks, with four replications. The experiment was conducted in a 3 x 7 factorial arrangement, corresponding to three nitrogen doses (0, 100, and 200 kg ha-1 year-1 in the form of ammonium sulfate), six shading intensities of Marandu grass in SSP (SSP 40-45, SSP 35-40, SSP 30-35, SSP 25-30, SSP 20-25, SSP 15-20%), and one treatment with Marandu grass cultivated in full sun (monoculture). Chemical analyzes were performed to obtain macro and micronutrient concentrations in the Marandu grass material. The adoption of the integrated SSP system and N doses showed interaction (P