Banca de DEFESA: GRAZIELLE DE CARVALHO REIS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : GRAZIELLE DE CARVALHO REIS
DATA : 11/02/2020
HORA: 08:30
LOCAL: UFRA, Campus de Parauapebas
TÍTULO:

GROWTH BIOSTIMULANT IN UROCHLOA BRIZANTHA CV. MARANDU CULTIVATED IN THE AMAZON BIOME

PALAVRAS-CHAVES:

Foliar fertilization, auxin, bioregulators, forage production

PÁGINAS: 27
GRANDE ÁREA: Ciências Agrárias
ÁREA: Zootecnia
RESUMO:

The objective of this study was to evaluate the effects of a growth stimulant on productivity, nutritional value and morphogenesis of Brachiaria urochloa cv. Marandu, managed under two levels of nitrogen fertilization. The experiment was conducted at the Federal Rural University of the Amazon, Campus of Parauapebas, the collections were carried out in the dry period (May to October) and rainy period (November to April) of the year. A 2 × 4 factorial design was used, with two doses of nitrogen fertilization (50 and 150 kg of N ha-1year-1) and four doses of 4 doses of growth biostimulant + foliar fertilizer (0,1,2,3 L ha^-1). The data were submitted to analysis of variance by the MIXED procedure of the SAS, using 5% as the critical level of significance. There was no triple interaction (Biostimulant of growth x Nitrogen fertilization x Period; p> 0.05) in none of the production and morphological characteristics of Brachiaria urochloa cv. Marandu. There was an increase in DM production per ha^-1 day, in treatments that contained 1 and 2 L ha^-1 of biostimulant + fertilization with 50 kg of N ha^-1 year^-1, provided by the presence of auxin in the biostimulant. Fertilization of 150 kg of N ha^-1 year^-1 provided shorter leaf life. In addition to the dosage of 150 kg of N ha^-1 year^-1, it causes an increase in the population density of tillers in the rainy season of the year. It can be concluded that the dosages of 1 and 2 L ha^-1 of the growth biostimulant, increase the dry matter production per ha day^-1, in the nitrogen fertilization of 50 kg of N ha^-1 year^-1.

MEMBROS DA BANCA:
Presidente - 1894011 - RAFAEL MEZZOMO
Interno - 015.776.076-60 - JOÃO PAULO PACHECO RODRIGUES - UNIFESSPA
Interno - 1143911 - RAYLON PEREIRA MACIEL
Externo à Instituição - ANDERSON DE MOURA ZANINE - UFMA
Externo à Instituição - LUANA MARTA DE ALMEIDA RUFINO - UNIFESSPA