Banca de DEFESA: MIGUEL DO ESPIRITO SANTO DE SÁ ANTUNES DIAS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : MIGUEL DO ESPIRITO SANTO DE SÁ ANTUNES DIAS
DATE: 25/07/2025
TIME: 09:00
LOCAL: Auditório da Biblioteca da UFAPE
TITLE:

Plant growth-promoting bacteria as attitudes of saline stress in forage palm

KEY WORDS:

Animal nutrition; semiarid; cactus; microorganisms; Bacillus
aryabhattai; bromatology.

PAGES: 76
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUMMARY:

The forage cactus (Nopalea cochenillifera Salm-Dyck cv. Miúda) is widely used
as a feed source for ruminants in the Brazilian semi-arid region, standing out for
its adaptability to adverse climatic conditions. However, irrigation water salinity
can compromise its development and nutritional value. This study aimed to
evaluate the effects of inoculation with Bacillus aryabhattai combined with
different levels of electrical conductivity of irrigation water on the phenology,
morphometric, productive, and bromatological characteristics of forage cactus.
The experiment was conducted in a completely randomized design (CRD), in a
2 × 3 factorial scheme, where the first factor corresponded to inoculation or
non-inoculation of the forage palm with Bacillus aryabhattai, while the second
factor consisted of three levels of water salinity (0.240; 0.615 and 1.268 dS/m at
25 °C). Variables evaluated included number of cladodes, active photosynthetic
area, green and dry matter production, as well as dry matter (DM), ash (MM),
organic matter (OM), crude protein (CP), ether extract (EE), neutral detergent
fiber (NDF), acid detergent fiber (ADF), acid detergent lignin (ADL), cellulose
(CEL), hemicellulose (HEM), total carbohydrates (TC), and non-fibrous
carbohydrates (NFC). The results showed that salinity negatively affected plant
growth and composition; however, inoculation with Bacillus aryabhattai
mitigated some of the harmful effects of salt stress. It is concluded that the use
of plant growth-promoting microorganisms is a promising strategy to improve
the agronomic performance and nutritional quality of forage cactus under saline
conditions, contributing to the sustainability of agriculture in the semi-arid
region.

COMMITTEE MEMBERS:
Externo à Instituição - FLEMING SENA CAMPOS - UESB
Presidente - 330722 - ALBERICIO PEREIRA DE ANDRADE
Interno - 1412816 - ANTÔNIO CLEMENTINO DOS SANTOS