Banca de DEFESA: FRANCISCO PAIVA UCHÔA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : FRANCISCO PAIVA UCHÔA
DATA : 16/12/2021
HORA: 08:30
LOCAL: Videoconferência
TÍTULO:

Use of solar energy as an alternative and sustainable control method for substrate disinfestation

PALAVRAS-CHAVES:

Keywords: Microorganisms, Alternative Control, Phytoparasites.

PÁGINAS: 78
GRANDE ÁREA: Outra
ÁREA: Ciências Ambientais
RESUMO:

In the state of Rondônia, in coffee exploration areas, observation of an increase in the occurrence of phytonematodes attack. Seeking greater control in the dissemination of these pathogens, some phytosanitary measures, such as the use of nematicides, have been adopted, since most nurseries in Rondônia still use soil as a substrate. This work aimed to test the control of root-knot nematodes Meloigogyne incognita by means of solar heating at a minimum temperature of 60 °C, using equipment called a solarizer, in an adapted version of the original model, built by hand, with a box. made of wood covered with metal sheets, thermal blankets, painted black, with aluminum pipes measuring 0.5 cm in diameter, installed at the bottom of the box, inside which the heated water circulates, the part by means of resistances and direct sunlight action. Soil prepared at a ratio of 1: 2 soil / sand were inoculated with a suspension of 1000 eggs + J2 of M. incognita per liter and stored in the equipment that has a capacity of 150 liters of soil. Exposure times at a minimum temperature of 60 °C were obtained, with 15 treatments: C1 (not inoculated and not autoclaved), C2 (inoculated), C3 (not inoculated and autoclaved) T0 ', T15', T30 ', T45', T60', T180', T360', T720', T1440', T2880' and T4320'. The temperature was controlled by a conventional thermometer. The soil was removed according to the time of exposure to a temperature of 60ºC, and placed in 8 liter pots, in which coffee seedlings of clone 125 and BRS 2356 known as susceptible to M. incognita were transplanted, and individually in the house of vegetation for 180 days, and tomato of the Santa Cruz KADA variety in 2-liter pots, litter in a greenhouse for 60 days. The experimental design used was DIC, with 6 repetitions, with each plant/pot considered a repetition. The reproduction factor (FR), number of eggs per plant (NOGR) and number of galls per gram of root (NGGR) were adopted. The variables FR, NOGR and NGGR were determined according to the time of exposure to a temperature of 60ºC. All treatments dissipated to control the population of M. incognita in infected soils in the proportion of 1000 eggs per liter of soil, with 100% efficiency from Treatment T45 ’for the production of Coffea Canephora seedlings.

 

MEMBROS DA BANCA:
Interno - 456.271.423-91 - CLEBERSON DE FREITAS FERNANDES - UFC
Interno - 079.807.827-80 - JOSE ROBERTO VIEIRA JUNIOR - UFV
Externo à Instituição - VANEIDE ARAUJO DE SOUSA RUDNICK - FIMCA