Banca de QUALIFICAÇÃO: HUGO MANOEL SANTOS COSTA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : HUGO MANOEL SANTOS COSTA
DATE: 29/04/2024
TIME: 08:30
LOCAL: Auditorio do Pgagro
TITLE:

POTENTIAL OF MICRORGANISMS NATIVE TO THE EASTERN AMAZON ASSOCIATED WITH FERTILIZATION IN THE CULTURE OF CORN GRASS (Sorghum bicolor (L.) Moench)

KEY WORDS:

Strains; Fungi; Growth Promotion; Physiology

PAGES: 45
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUBÁREA: Fitotecnia
SPECIALTY: Manejo e Tratos Culturais
SUMMARY:

Sorghum (Sorghum bicolor) is a cereal of African origin that is grown all over the world. In Brazil, production is mainly focused on livestock farming for animal feed and silage production. The sorghum plant is susceptible to various pests, including caterpillars, beetles and aphids. Chemical control of these pests can be expensive and harmful to the environment. The growth-promoting fungus Trichoderma spp, and the entomopathogens Metarhizium anisopliae and Beauveria bassiana can be used as plant biostimulants. Promoting plant growth using microorganisms is a promising strategy in Brazilian agriculture. Fungi are living organisms that have the ability to solubilize nutrients in the soil, making them available to plants. They promote this through a variety of mechanisms, including: Production of organic acids, such as citric acid and oxalic acid, which can dissolve minerals in the soil. They produce enzymes, such as phosphatases and sulfatases, which can break down soil minerals into simpler, more soluble forms. Fungi also act mechanically, breaking down soil minerals into smaller, more soluble particles. The aim was to evaluate the growth promotion of sorghum plants biostimulated with fungi inoculated into the plants at a concentration of 10^8 conidia/ml. The design was entirely randomized with thirteen treatments and five replications in 5 kg pots, conducted in a greenhouse: Twelve of the treatments had application of the microorganisms Trichoderma asperellum; M. anisopliae; B. bassiana; associated with percentiles of 100, 60, 40 and 0% fertilization. A control treatment with 100% fertilization without fungus application, all fertilizations carried out in accordance with the manual recommending liming and fertilization for the state of Pará. Two applications of fungus were made at 20 days and 40 days after sowing. Statistical analysis was carried out and the means were compared using the Tukey test (p<0.01). All the fungi promoted growth, biomass accumulation, higher chlorophyll content and improved photosynthetic performance. It should be noted that Beauveria bassiana was one of the fungi that stood out most in terms of biomass accumulation and gas exchange. The results show that the fungi evaluated promote the growth of sorghum plants in the greenhouse and can contribute to more sustainable crop management. 

COMMITTEE MEMBERS:
Presidente - 3266519 - TELMA FATIMA VIEIRA BATISTA
Externo ao Programa - 1331235 - THIAGO CARVALHO DA SILVA - UFRAExterna à Instituição - MARCELA CRISTIANE FERREIRA RÊGO - UEPA