Adubação foliar no estabelecimento dos capins Marandu, Mavuno, Mulato II e Ipyporã

Abstract

Leaf fertilization with macro and mineral micronutrients for the establishment of forage grasses may be a less expensive alternative to the producer, although its advantages are still being investigated. The objective of this work was to evaluate how physiological, productive responses, root reduction and growth of Urochloa brizantha cv. Marandu and Urochloa hybrids, depending on the application or not of leaf manure during a pasture establishment phase. The work was carried out at the Capim Branco experimental farm, in the Foraging Sector of the Federal University of Uberlândia, in Uberlândia. MG. Four experiments were conducted, selected and concomitantly, to evaluate, as the following forage grasses: Urochloa brizantha cv. Marandu and hybrid Urochloa Mulato II, Mavuno and Ipyporã. The experiments were conducted from November 2018 to March 2019. One experimental area of each experiment consisted of four plots, one with 12.25 m², where half of the plot area received or fertilized leaf and the other half did not. The foliar fertilizer used was FH FOLIAR PASTAGEM (Heringer Fertilizers, Paulínia, SP., Brazil) with 14% nitrogen; 12% phosphorus; 12% potassium; 0.38% Mg; 10.2% S; 0.24% Cu; 0.18% Mn and 0.63% Zn, at a dose of 2 kg/ha, diluted in spray water 42 days after plant emergence. In each experiment, or design was randomized with four replications. The following responses were evaluated: spad index, leaf area index, canopy light interception, forage yield and root density. In all experiments, a foliar fertilizer application did not influence the available response variables. Leaf fertilization during Marandu, Mulato II, Mavuno and Ipyporã weeding did not affect the area and leaf indices, forage production and root density.