Banca de QUALIFICAÇÃO: DARYEL HENRIQUE ABREU DE QUELUZ

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : DARYEL HENRIQUE ABREU DE QUELUZ
DATE: 26/07/2023
TIME: 08:30
LOCAL: De forma remota link:meet.google.com/zdz-uqyi-mju
TITLE:

Nitrogen fertilization associated with foliar application of Methylobacterium Symbioticum increases the production of Zuri grass

KEY WORDS:

growth-promoting bacteria, chlorophyll, biological nitrogen fixation, pasture

PAGES: 15
BIG AREA: Ciências Agrárias
AREA: Zootecnia
SUBÁREA: Pastagem e Forragicultura
SPECIALTY: Manejo e Conservação de Pastagens
SUMMARY:

Nitrogen fertilization is essential for improving pasture productivity, since its use can reduce degradation damage and improve product indices.On the other hand, its use, in addition to being costly, can also cause environmental damage.Nitrogen-fixing bacteria are environmentally harmless and can supply nitrogen at low cost.In this context we have Methylobacterium Symbioticum that can fix nitrogen and release phytohormones for plants.Thus, the objective was to measure the effects of the association of nitrogen fertilization and foliar application of Methylobacterium Symbioticum on the productive gains of grass Megathyrsus maximus cv.BRS Zuri.A randomized block design comprising a 2 x 2 + 2 factorial arrangement with four replications was used.The following factorial treatments were evaluated: doses of nitrogen (N), 100 kg/ha and 200 kg/ha, inoculation or not of the bacterium Methylobacterium sumbioticum sp (M. Symbioticum) and two additional treatments (two replications): negative control (nofertilization and without inoculation) and with only inoculation of M. Symbioticum.There was no interaction between M. Symbioticum inoculation and fertilization for MSFT, MSLF, MSCM MSMM, height and CLH.MSFT AND MSLF were in the treatments that received the inoculation.There was a similarity between MSFT and MSLF in the treatments with nitrogen fertilization and the one that received only inoculation with M. Symbioticum.The dose of 200 N kg.ha-1 with M. Symbioticum promoted higher tiller density when compared to doses without inoculation.The CLH was influenced only by the doses of N, however when comparing the treatment that received only inoculation and the negative treatment (white) the inoculation increased the amount of chlorophyll in the leaf.The inoculation of M. Symbioticum increases the production of Zuri grass.In association with 200 N kg.ha-1 it promotes greater forage tillering.The use of foliar Methylobacterium sumbioticum is a possible strategy to increase nitrogen through biological fixation and plant hormones, thus reducing the use of nitrogen fertilizers and maintaining the productive characteristics of Zuri grass.

BANKING MEMBERS:
Presidente - 1143911 - RAYLON PEREIRA MACIEL
Interno - 1970202 - RICARDO SHIGUERU OKUMURA
Externa à Instituição - ANA FLÁVIA GOUVEIA DE FARIAS
Externo à Instituição - JOSE GERALDO DONIZETTI DOS SANTOS