Banca de DEFESA: LEONARDO JOSÉ DAMASCENO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : LEONARDO JOSÉ DAMASCENO
DATA : 21/02/2020
HORA: 10:00
LOCAL: Auditório
TÍTULO:

PERFORMANCE AND ECONOMIC ANALYSIS OF THE PRODUCTION OF BIOMASS AND MAIZE GRAINS WITH AZOSPIRILLUM BRASILIENSE ASSOCIATED WITH INCREASED EFFICIENCY NITROGEN FERTILIZERS

PALAVRAS-CHAVES:

Growth-promoting Bacteria, Diazotrophic Bacteria, Inoculation.

PÁGINAS: 67
GRANDE ÁREA: Ciências Agrárias
ÁREA: Zootecnia
SUBÁREA: Pastagem e Forragicultura
RESUMO:

Farmers have adapted the fertilization recommendations for maize grown in the South of the country to the Northern States, sometimes overestimating, sometimes underestimating the fertilizer doses applied, as well as the benefits of seed treatment to improve N utilization efficiency. In this sense, the objective of this work was to evaluate the effect of Azospirillum brasiliense associated with nitrogen fertilizers of increased efficiency in corn cultivated in Carajás region. The experimental design was completely randomized in a 5 x 3 x 2 factorial scheme with six replications. The factors studied were: i) factor A - five doses of N applied at coverage (0, 50, 100, 150 and 200 kg ha-1 of N) at the phenological stage V4; ii) factor B - three sources of N, corresponding to urea, urease inhibitor urea and coated urea; and iii) factor C - with and without seed inoculation with Azospirillum brasiliense. The inoculant dose was 100 mL ha-1 containing bacterial strains at a minimum concentration of 2 x 108 viable cells mL-1. The following plant phytotechnical evaluations were carried out: average plant height, average ear insertion height, average stem diameter, prolificity, average ear length, average ear diameter, average number of rows per ear, average number of grains per row and ear mass without straw. Evaluations of nutritional status through the variables: non-destructive determination of chlorophyll “a”, “b” and total leaf; fertilizer use efficiency.

There was significant interaction between inoculation factors and nitrogen doses for stem diameter (DC), leaf area index (IAF), chlorophyll A, B and total, root length (CR), root width (LR), yield of root dry mass (MSR). While the variables height, leaf dry mass and stem dry mass did not show significant interaction, however the factors, dose, source and azospirillum influenced in isolation.

MEMBROS DA BANCA:
Interno - 1067653 - PERLON MAIA DOS SANTOS
Interno - 1143911 - RAYLON PEREIRA MACIEL
Externo ao Programa - 2077542 - DAIANE DE CINQUE MARIANO
Externo à Instituição - ANTÔNIO AUGUSTO NOGUEIRA FRANCO - IFPA
Externo à Instituição - LUCIANO FERNANDES SOUSA - UFT