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Abstracts - Isis T. Souza

Type of the Presentation: Poster

SYNTHESIS AND FIELD TEST OF (Z) -9-TETRADECENAL IN THE LEPIDOPTEROS PHEROMONAL MIXTURE

Isis T. Souza1*, Adeildo J. de Oliveira1, Maria R. F. de Lima1, Jakeline M. dos Santos2 and Henrique F. Goulart3 Antônio E. G. Santana3

1 Federal University of Alagoas, Institute of Chemistry and Biotechnology; adeildojro@gmail.com; mraquelf@gmail.com

2 Federal University of Alagoas, Northeast Network of Biotechnology; jackbilu@hotmail.com

3 Federal University of Alagoas, Center for Agrarian Sciences; fonsecagoulart@gmail.com; aegsal@gmail.com

* Correspondence: isinhasouza@gmail.com

With the agricultural production for 2017 estimated in almost 241 million tons of cereals, legumes and oilseeds, the Brazilian scenario faces problems with agricultural pests, which cause losses of production, reducing producer profitability [1]. The use of pheromones in insect control has gained more and more importance because they are biodegradable, do not leave residues in the environment, besides the greater specificity to the target insect [2,3]. In the Ministry of Agriculture, Livestock and Food Supply are registered 52 products described as pheromone. Helicoverpa armigera had its first record in Brazil in 2013 [4], in that same year, in the municipality of Limoeiro de Anadia, the pest was recorded in the state of Alagoas in bean crops [5]. For Helicoverpa armigera the aldehydes (Z)-11-hexadecenal (Z11-16AL) and (Z)-9-hexadecenal (Z9-1ALAL) are described as the main components of the sexual pheromone, however, studies show that other compounds like (Z)-9-tetradecenal (Z9-14AL) act by increasing the attractive effect. The objective of the work was to synthesize the (Z)-9-tetradecenal and to test in the field the new pheromonal formulation evaluating its attractiveness in comparison to the formulation with the two components. The synthetic route was performed in six steps, with yields ranging from 70%-97%. The product formation was confirmed through the analysis of Mass Spectra and Nuclear Magnetic Resonance. Field tests were carried out in Limoeiro de Anadia, Alagoas State, in three areas with okra, beans, corn and vegetables. Traps with two concentrations of Z9-14AL were tested and they were replaced after 30 days. The obtained data were statistically analyzed.

Refs.

  1. Brasil.http://ibge.gov.br/home/estatistica/indicadores/agropecuaria/lspa/defaulttab.shtm>, 2017.

  2. Silva, C.A.D.,Embrapa, 2002.

  3. Zarbin, P.H.G. et al., Quim. Nova, 32, 3, 2009.

  4. Czepak, C.et al., Pesq. Agropec. Trop. 43, 1, 2013.

  5. Alagoas.<http://www.defesaagropecuaria.al.gov.br/sala-de-imprensa/noticias/2014/janeiro/laudo-laboratorial-confirma-presenca-de-helicoverpa-armigera-em-alagoas>., 2014.