Banca de DEFESA: LEANDRO MAIA MACHADO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : LEANDRO MAIA MACHADO
DATE: 23/07/2021
TIME: 08:30
LOCAL: Sala Virtual - Plataforma Zoom
TITLE:

Sigatoka Negra, state of the art and management perspectives from an agroecological view.

KEY WORDS:

Phytopathology; banana; biological control; agroecological Management.

PAGES: 51
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUBÁREA: Fitossanidade
SPECIALTY: Microbiologia Agrícola
SUMMARY:

The banana is the most popular and most consumed fruit in Brazil. Banana has economic importance and represents a source of food for the most vulnerable social classes. Banana cultivation in the world has been affected by a complex of leaf diseases known as Sigatokas, since 1902. Among the agents of this complex, Sigatoka Negra, caused by Mycosphaerella fijiensis, is known to be the most severe in certain conditions and had a wide range dispersion throughout the world, being present in almost all producing regions, with the exception of Australia, which has had a successful case in containing the progress of the disease and returning the status to a pathogen-free area. In the American continent, it has been identified since 1972, departing from Honduras, and arriving in Brazil in 1998, where it was described for the first time in the State of Amazonas. The biology of the pathogen Mycosphaerella fijiensis is characterized, describing the symptoms caused, as well as the conditions for its development and the importance of observing ecological variables in the production system. The management of the disease is presented, where the pathosystem involved for the disease is characterized, and the new perspective of expanding hosts for the pathogen is approached. Some of the practices used to cope with the disease are then described within the agroecological perspective of conducting culture. Thus, the use of resistant cultivars, the effects of agroecological practices on crop development, the induction of systemic resistance, non-host resistance, the effects of physical and chemical barriers, in addition to the types of rapid active defenses and delayed active defenses are described. However, they are also contemplated in this review work: crop management in an agroforestry system, where the mechanisms of regulation of plant richness on Sigatoka Negra are reported and the positive effect of plant diversity on the tolerance of Musa sp. plants; the effect of the controlled practice of banana defoliation as an efficient management technique for reducing the source and dispersion of inoculum in the culture, from the use of a product prepared with TTO derived from Melaleuca alternifolia against hyphae of M. fijiensis in banana leaves and their curative capacity to act on advanced stages of the disease (stages 4 and 5), and broad description of the use of some microbial biological control agents (MBCAs), such as Trichoderma harzianum, Bacillus tequilensis EA-CB0015 and Bacillus pumilus CCIBP-C5.

 

BANKING MEMBERS:
Presidente - 2186690 - JOAO SEBASTIAO DE PAULA ARAUJO
Interno - 1863063 - LUIZ AURELIO PERES MARTELLETO
Externo à Instituição - JORGE TEODORO DE SOUZA - UFLA