Banca de DEFESA: DIMISON GARCIA BLANCO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : DIMISON GARCIA BLANCO
DATA : 27/02/2019
HORA: 14:00
LOCAL: Auditório do PgAgro
TÍTULO:

INSECTICIDAL POTENTIAL OF AQUEOUS PLANT EXTRACTS OCCURRING IN THE EASTERN AMAZON ON CABBAGE APHID (HEMIPTERA: APHIDIDAE)

PALAVRAS-CHAVES:

Bio insecticide, alternative control, botanical extracts

PÁGINAS: 45
GRANDE ÁREA: Ciências Agrárias
ÁREA: Agronomia
SUBÁREA: Fitossanidade
ESPECIALIDADE: Defesa Fitossanitária
RESUMO:

A

The present work had as objective to verify the potential of control of aqueous extracts of plants native or occurring in the Amazon Region, for the control of the key pest aphid in growing vegetables. Field interviews were conducted with producers of vegetables located in two municipalities in the Northeast of Paraense, in order to obtain information about pests, the main control methods, and the use or knowledge of plants with insecticidal effect. In addition, the effect of aqueous extracts of plants occurring in the Amazon region on nymphs and adults of aphids was evaluated. The leaves were dried in an oven at 50ºC for 48h and crushed to obtain powder. The treatments consisted of 10% (g-mL-1) vegetable extracts of cipó de alho, melão de São Caetano, Quina and distilled water (control). The solutions obtained were sprayed on brassica discs (Brassica oleracea var. Acephala), placed on filter paper in Petri dishes containing 10 aphids, followed by the plates were sealed with transparent plastic film, punctured with an entomological pin and held in camera conditioned air type BO D (25 ± 1ºC, 70 ± 5% RH and 12h of photophase). The experimental design was completely randomized and the natural mortality was corrected by Abbott's formula. Among the interviewees, 95% reported having some type of problem with the occurrence of pests in their area of cultivation. The number of dead nymphs and adults were counted 24 and 48 h after spraying, the results were submitted to analysis of variance and the means were compared by the Tukey test at 5% probability. Among the pests that cause the most damage to cultivated vegetables, are caterpillars (Lepidoptera), packs (Orthoptera), leafhoppers, slugs, whiteflies (Hemiptera, Aleyrodidae and aphid (Hemiptera, Aphididae). The insecticidal effect of the extract of quinine was observed in aphids in the nymph and adult phase, and the extract of garlic cichó had an insecticidal effect only in the phase The number of insects killed after spraying with melão de São Caetano extract did not differ from the control treatment. The extract of quinine showed an insecticidal effect on the aphid, a key pest in vegetables, in the nymph and adult phases.

 

MEMBROS DA BANCA:
Presidente - 2935509 - ANDERSON GONCALVES DA SILVA
Externo ao Programa - 6388358 - PAULO ROBERTO DE ANDRADE LOPES
Externo à Instituição - RAFAEL COELHO RIBEIRO - UFPA
Externo ao Programa - 388492 - SERGIO ANTONIO LOPES DE GUSMAO