Extrato metanólico de farinha de folhas de mandioca como alternativa ao controle da lagarta-do-cartucho e de formigas cortadeiras
| Autor: | Angelita Duarte Corrêa, Geraldo Andrade Carvalho, Anderson Assaid Simão, Rodrigo Lopes de Oliveira, Adelir Aparecida Saczk, Dejane Santos Alves, Ana Paula de Carvalho Alves, Mírian Aparecida Isidro Santos |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Semina: Ciências Agrárias. 34:3501 |
| ISSN: | 1679-0359 1676-546X |
| DOI: | 10.5433/1679-0359.2013v34n6supl1p3501 |
| Popis: | The objective of this study was to characterize phenolic compounds and evaluate the effect, under laboratory conditions, of the cassava leaf powder methanol extract on the development of fall armyworm Spodoptera frugiperda and of leaf-cutting ant Atta sexdens rubropilosa. The extract was incorporated into an artificial diet, to which the armyworm was exposed, at concentrations of 250, 500, 1,000 and 1,500 mg kg-1, in order to evaluate biological characteristics. Soon after the insects emergence, another experiment was conducted to verify the possible sub lethal activity of the extract; therefore, S. frugiperda couples were isolated in cages and eggs were collected and counted. The Manihot esculenta Crantz extract caused a reduction in the percentage of armyworm survival, as well as in the eggs number. Then, the same extract was solubilized in 10% ethanol and applied to ants; mortality was observed, compared to the control. It is possible to conclude that the M. esculenta Crantz leaf powder methanolic extract, containing gallic acid and catechin, is a promising alternative to control S. frugiperda and Atta sexdens rubropilosa. |
| Databáze: | OpenAIRE |
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