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Bioactivity of aqueous extracts of Clibadium sylvestre (Aubl.) Baill. and Derris amazonica Killip on the aphid Myzus persicae (Sulzer, 1776) (Hemiptera: Aphididae) Ciência e Agrotecnologia
Filgueiras,Camila Cramer; Farias,Paulo Roberto Silva; Cardoso,Maria das Graças; Vendramim,José Djair; Ramos,Edson Marcos Leal Soares; Cantão,Fernando Rodrigo de Oliveira.
Studies with botanical insecticides have become more popular as an alternative to Integrated Pest Management. The purpose of this study was to evaluate the effect of leaf and fruit aqueous extracts, from the species Clibadium sylvestre, and leaves and root of Derris amazonica species at concentrations of 0, 1, 2, 4 and 8%, in the control of the aphid Myzus persicae (Hemiptera: Aphididae). Four experiments were conducted; two tests with choice preference and two tests with no choice preference, giving nine treatments and five repetitions. Phytochemical screening was carried out from the leaves and fruit of the species C. sylvestre and leaves and root of D. amazonica. Evaluations of mortality, number of nymphs, and deterrence index of the insects were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Organic agriculture; Botanical insecticides; Cunaniol; Rotenone.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000600004
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Etude de la dégradation et de la toxicité de la roténone en milieu marin ArchiMer
Marcaillou-le Baut, Claire.
The use of rotenone as a means of predators eradication is necessary for the success of shrimps culture. Because these compound is a fish toxicant, some precautions have to be tacken in order to avoid the contamination of marine environment by the residual waters ; so the dissipation and the toxicity have been studied together in laboratory and in field assays. It appears that a delay of 15 days should be respected : this time is required for a total disappearing of the residual toxicity.
Tipo: Text Palavras-chave: Aquaculture crevette; Roténone; Toxicité; Dégradation; Shrimps culture; Rotenone; Toxicity; Degradation.
Ano: 1987 URL: http://archimer.ifremer.fr/doc/00138/24949/23042.pdf
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Side-effects of pesticides used in the organic system of production on Apis mellifera Linnaeus, 1758 BABT
Efrom,Caio Fábio Stoffel; Redaelli,Luiza Rodrigues; Meirelles,Rafael Narciso; Ourique,Cláudia Bernardes.
This study aimed to evaluate the effects of pesticides, used in the organic system, on Apis mellifera under laboratory conditions. Four multiple (0.25x, 0.5x, 1x and 2x) concentrations as recommended by they manufacturers of the following products: Rotenat CE®, Pironat®, Biopirol 7M®, Organic neem®, Natuneem® and lime sulfur were tested by topical application and ingestion. Of all the products and concentrations tested, only the lime sulfur (5000 ml 100L-1 and 10000 mL 100L-1 of water) by ingestion, and Rotenat CE® (1200ml 100L-1 of water) on topical application were considered slightly harmful for A. mellifera, as the classification of IOBC/WPRS for the laboratory tests.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Honeybees; Rotenone; Lime sulfur; Neem; Pyroligneous extract.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000100005
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