Banca de QUALIFICAÇÃO: WILTON CARLOS AROUCHA PEREIRA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : WILTON CARLOS AROUCHA PEREIRA
DATE: 29/04/2024
TIME: 14:00
LOCAL: De forma remota link:meet.google.com/vtx-rvtz-hee
TITLE:

INFLUENCE OF NITROGEN SOURCES ON THE FORAGE QUALITY OF MEGATHYRSUS MAXIMUS IN PARAUAPEBAS - PA

KEY WORDS:

Megathyrsus maximus, nitrogen fertilization, forage quality.

PAGES: 34
BIG AREA: Ciências Agrárias
AREA: Zootecnia
SUBÁREA: Pastagem e Forragicultura
SPECIALTY: Manejo e Conservação de Pastagens
SUMMARY:

This study investigated the effectiveness of different nitrogen sources in fertilizing Megathyrsus maximus cv. Miyagui in Parauapebas, in the state of Pará. The aim was to assess how urea, calcium nitrate, and magnesium nitrate influence the forage composition, specifically in terms of dry matter, total nitrogen, crude protein, neutral detergent fiber (NDF), and acid detergent fiber (ADF). The results demonstrated that urea was particularly effective at promoting high levels of dry matter, while also maintaining an adequate concentration of total nitrogen. This underscores its effectiveness in providing the necessary nutrients for the vegetative growth of Megathyrsus maximus cv. Miyagui, especially under the humid tropical conditions of Parauapebas. This effectiveness is likely related to the rapid availability of urea's nitrogen to the plants, which could accelerate and enhance the growth and development of the forage. On the other hand, calcium nitrate, despite significantly increasing mineral matter levels, was less effective at promoting crude protein and managing fiber digestibility (NDF and ADF), indicating a less efficient assimilation of essential nutrients for forage nutritional quality, negatively impacting animal feed. Magnesium nitrate, although showing moderate results, could not surpass urea in any of the analyzed aspects. Urea stands out as the most promising nitrogen source for the cultivation of Megathyrsus maximus cv. Miyagui in Parauapebas, offering an ideal balance between vegetative growth and nutritional quality of the forage.

COMMITTEE MEMBERS:
Presidente - ***.420.174-** - ANTONIO CLEMENTINO DOS SANTOS - UFT
Externo à Instituição - JONAHTAN CHAVES MELO
Interno - 1067653 - PERLON MAIA DOS SANTOS
Interno - 1143911 - RAYLON PEREIRA MACIEL