Banca de QUALIFICAÇÃO: LAYS LAIANNY AMARO BEZERRA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : LAYS LAIANNY AMARO BEZERRA
DATE: 22/08/2022
TIME: 10:00
LOCAL: PLATAFORMA GOOGLE MEET
TITLE:

USE OF ESSENTIAL OILS FROM PLANTS FROM THE ARARIPE NATIONAL FOREST IN THE CONTROL OF THE BLACK BEAN Aphid (Aphis craccivora Koch) (HEMIPTERA: APHIDIDAE)

KEY WORDS:

Alternative method. Cowpea beans. aphids.

PAGES: 39
BIG AREA: Outra
AREA: Ciências Ambientais
SUMMARY:

The black aphid Aphis craccivora Koch 1854 is one of the pests that cause more damage to the cowpea Vigna unguiculata (L.) Walp. Due to the need to find effective and safe methods of control, research has increased seeking natural alternatives, such as the use of essential oils with insecticidal properties. Thus, the objective of the present work will be to evaluate the potential of medicinal oils from Hymenaea courbaril, Copaifera langsdorffii and Schinus terebinthifolius to control A. craccivora. The biotests will be conducted in two stages: the first at the Agricultural Entomology Laboratory of the Federal University of Cariri (UFCA), in Crato-CE and the second in a greenhouse at Embrapa Algodão, in Barbalha. The oils were extracted by hydrodistillation in a Clevenger-type still apparatus. The treatments were formed by the essential oil at 0.1%, together with distilled water and the solvent Dimethylsulfoxide 2% (DMSO), and the control treatment consisted of distilled water and the solvent. Each treatment has four replicates. The sample unit of laboratory tests consists of leaf discs of the culture placed in Petri dishes, containing 10 insects, where applications of 0.5 mL of the respective solutions were made. The plates remained in BOD at a temperature of 25°C ± 2°C, relative humidity of 70 ± 10% and a photophase of 12 hours, and after 24, 48, 72, 96 and 120 hours of exposure, readings were taken in the treatments . The tests were performed initially with insect nymphs and later with wingless adults. The sample unit of the tests in the greenhouse will consist of plants of V. ungiculata 30 days after sowing. The treatments used will be those that obtain the best results in laboratory tests. Oil exposure and treatment readings will occur as described for laboratory analysis. The data obtained will be subjected to analysis of variance and their means will be compared by Tukey's test at 5% probability, in addition to regression analysis and mortality efficiency. The partial results for the first phase of the experiment show that the mastic oil stood out, reaching 83.33% and 75.75% mortality efficiency in nymphs and adults, respectively, after 120 hours of exposure.

BANKING MEMBERS:
Interno - 1513585 - FRANCISCO JOSE DE PAULA FILHO
Presidente - 1548701 - FRANCISCO ROBERTO DE AZEVEDO
Externo à Instituição - Walter Santos Evangelista Júnior