Banca de QUALIFICAÇÃO: ALINE FIGUEIREDO CARDOSO

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE : ALINE FIGUEIREDO CARDOSO
DATA : 30/09/2019
HORA: 09:30
LOCAL: Auditorio do PgAgro
TÍTULO:

Coconut palm seedling growth in relation to biofertilization and substrate

PALAVRAS-CHAVES:

Trichoderma, rhizobacteria, Cocus nucifera L., biostimulant, growth promotion, sustainability

PÁGINAS: 74
GRANDE ÁREA: Ciências Agrárias
ÁREA: Agronomia
SUBÁREA: Fitossanidade
ESPECIALIDADE: Microbiologia Agrícola
RESUMO:

Coconut farming has great economic and social importance, which makes its production chain and the most important factors in coconut plantations are the origin, quality and vigor of the seedlings. The long period to obtain the seedlings and the high cost of production are among the main problems in the initial phase of the crop implantation. The use of microbial technology to obtain seedlings can be a positive tool, mainly due to the capacity of microorganisms such as fungi. and rhizobacteria colonize the host plant and activate different routes and syntheses related to plant growth. The objective of this study was to promote the growth of coconut seedlings with the application of biofertilizers and to evaluate the effects on growth and production cost. Coconut palm seedlings of the green dwarf variety from Brazil were used. In the first assay was used isolate R40 (Bacillus sp.), Tested on two types of substrates soil and coconut fiber. The largest increases in biometrics, hormones and nutrient content occurred when Bacillus was combined with coconut fiber with 33% of conventional fertilization compared to uninoculated coconut fiber and with 100% conventional fertilization and with Bacillus sp. and 50% of conventional fertilization at 1% of significance (p <0.01). In the second trial, Trichoderma sp. was tested on two types of soil and coconut fiber substrates. The use of Trichoderma positively influenced plant growth on both substrates. There was a positive influence on biometrics, hormones, nutrient content, chlorophylls and gas exchange when combined with coconut fiber and 33% of conventional fertilization and compared to coconut fiber without inoculation and with 100% conventional fertilization at 1% significance (p < 0.01). Trichoderma sp. in soil had a positive influence on biometrics, hormones, nutrient content, chlorophylls and gas exchange compared to seedlings in soil with 100% of conventional fertilization and without inoculation. In the third trial, the economic viability of the application of biofetilizers in coconut seedlings was evaluated. The use of biofertilizers in soil substratum reduces the cost of producing a seedling by R $ 0.41 (forty one cents) and coconut fiber by R $ 1.00 (one real). The use of microbial technology in the production of coconut seedlings promotes the growth of coconut seedlings and reduces production costs on different substrates.

MEMBROS DA BANCA:
Presidente - 1551252 - GISELE BARATA DA SILVA
Externo ao Programa - 2874082 - GILSON SERGIO BASTOS DE MATOS
Externo à Instituição - ADRIANO STEPHAN NASCENTE - EMBRAPA
Externo à Instituição - THATYANE PEREIRA DE SOUSA - UFG