Plant extracts in the control of aphids Brevicoryne brassicae (L.) and Myzus persicae (Sulzer)
DOI:
https://doi.org/10.5433/1679-0359.2011v32n2p503Keywords:
Insecta, Aphids, Insecticidal plants, Brassicas.Abstract
Were accomplished the effect of plant extracts of clove basil (Ocimum gratissimum L.), horsetail (Equisetum hyemale L.), coriander (Coriandrum sativum L.) and tobacco (Nicotiana tabacum L.) on Brevicoryne brassicae (L., 1758) and Myzus persicae (Sulzer, 1776) aphids in cabbage Brassica oleracea (L.). The treatments consisted of plant extracts prepared fresh and dry (concentrations of 2.5; 5.0; and 10%) and the controls insecticide acephate and water. These solutions were sprayed on cabbage discs placed on agar in Petri dishes, containing twenty adult aphids. In sequence, the Petri dishes were sealed with plastic film and this procedure was repeated for the two aphid species studied. The assessment of the number of live nymphs and adults occurred at 1, 12, 24, and 72 hours after installation. The extracts of coriander and tobacco prepared in a concentration of 10% showed toxic effects similar to the organophosphate insecticide acephate, on adults and nymphs of the aphids Brevicoryne brassicae and Myzus persicae. Coriander revealed a promising alternative that deserves detailed studies regarding the performance of its active ingredients and dosage determination in order to provide a safe herbal product to control insects.
Downloads
Downloads
Published
How to Cite
Issue
Section
License
Semina: Ciências Agrárias adopts the CC-BY-NC license for its publications, the copyright being held by the author, in cases of republication we recommend that authors indicate first publication in this journal.
This license allows you to copy and redistribute the material in any medium or format, remix, transform and develop the material, as long as it is not for commercial purposes. And due credit must be given to the creator.
The opinions expressed by the authors of the articles are their sole responsibility.
The magazine reserves the right to make normative, orthographic and grammatical changes to the originals in order to maintain the cultured standard of the language and the credibility of the vehicle. However, it will respect the writing style of the authors. Changes, corrections or suggestions of a conceptual nature will be sent to the authors when necessary.
