Dimethoate
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Effects of Types of Washing and Peeling in Relation to Pesticide Residues in Tomatoes
Tomatoes are widely consumed and most often without cooking, therefore it is important to estimate the reduction of residues using simple washing procedures. An experiment was carried out to evaluate the effects of household processing such as: washing with water, washing with 10% of vinegar solution and washing with 10% of sodium bicarbonate solution on pes
J. Braz. Chem. Soc.. Publicado em: 2015-10
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2. Resistência a acaricidas em Phytoseiulus macropilis (Banks) (Acari: Phytoseiidae) / Resistance of Phytoseiulus macropilis to acaricides (Banks) (Acari:Phytoseiidae)
O ácaro predador Phytoseiulus macropilis (Banks) (Acari: Phytoseiidae) possui grande potencial como agente de controle biológico do ácaro-rajado Tetranychus urticae Koch (Acari: Tetranychidae). No entanto, o controle químico pode interferir negativamente na efetividade deste predador. Uma alternativa que permitiria explorar o potencial apresentado por P.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/06/2010
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3. DESENVOLVIMENTO DE MÉTODO MULTIRESIDUAL PARA ANÁLISE DE PESTICIDAS EM MEL, UTILIZANDO CROMATOGRAFIA A LÍQUÍDO COM DETECTOR ESPECTROFOTOMÉTRICO COM ARRANJO DE DIODOS / MULTIRESIDUAL METHOD DEVELOPMENT TO ANALYSIS OF PESTICIDES IN HONEY, USING LIQUID CHROMATOGRAPHY WITH SPECTROPHOTOMETRIC DETECTOR WITH ARRANGEMENT OF DIODES
Honey is a product of proven therapeutic and nutritional properties, and which may act as an excellent bioindicator, given the way the bees gather and process the raw material used in its preparation. The monitoring of pesticide residues in honey is important both to control product quality in domestic and international markets, and in assessing the potentia
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/01/2009
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4. Physiologic selectivity of insecticides used in coffee crop on the predators Chrysoperla externa (Hagen, 1861) (Neuroptera: Chrysopidae) and Cryptolaemus montrouzieri Mulsant, 1853 (Coleoptera: Coccinellidae) / SELETIVIDADE FISIOLÃGICA DE INSETICIDAS UTILIZADOS EM CAFEEIRO SOBRE OS PREDADORES Chrysoperla externa (HAGEN, 1861) (NEUROPTERA: CHRYSOPIDAE) E Cryptolaemus montrouzieri MULSANT, 1853 (COLEOPTERA: COCCINELLIDAE).
For the use of predators for pest control in the coffee crops in association with pesticides it is important that these compounds be selective to these natural enemies The physiologic selectivity of pesticides used in coffee crop on these predators Chrysoperla externa (Hagen 1861) (Neuroptera Chrysopidae) and Cryptolaemus montrouzieri Mulsant 1853 (Coleopter
Publicado em: 2008
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5. Como desenvolver o potencial do acaro predador Phytoseiulus macropilis para controlar o ácaro-rajado em plantas de morango? / How to realize the potential of the predatory mite Phytoseiulus macropilis to control two-spotted spider-mites in strawberry?
Biological control using naturally occurring predators has been attempted. In Brazil, field studies showed that the indigenous predatory mite Phytoseiulus macropilis (Banks) is constantly found associated with spider mites in strawberry crops in the Minas Gerais state. This predatory mite occurrence is high on abandoned strawberry fields, but on plants that
Publicado em: 2006
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6. Dimethoate degradation in plants and during processing of yerba maté leaves
O objetivo desta pesquisa foi estudar a cinética de degradação de dimetoato em plantas de erva-mate (Ilex paraguariensis Saint Hilaire) e durante o processamento destas. Para determinar a concentração de dimetoato foi empregada a técnica de cromatografia gasosa capilar, com uso de detector seletivo de massas. O tempo de meia vida nas plantas variou ent
Brazilian Archives of Biology and Technology. Publicado em: 2002-12
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7. Controle de Tetranychus urticae Koch com fungos entomopatogênicos. / Control of Tetranychus urticae Koch with entomopathogenic fungi.
Among 45 isolates of hyphomycetes tested against Tetranychus urticae, 8 Beauveria bassiana and 4 Metarhizium anisopliae isolates caused mortality >80 and 90%, respectively, 5 days after inoculation with 5x10 7 conidia/mL. Hirsutella sp. caused 73% mortality at a concentration of 1.7x10 7 conidia/mL. Eighty to 100% of cadavers infected by B. bassiana or M. an
Publicado em: 2002
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8. SELETIVIDADE DE INSETICIDAS A Neoseiulus californicus MCGREGOR (ACARI: PHYTOSEIIDAE) EM MACIEIRA, NO RIO GRANDE DO SUL
Testes para determinar os efeitos de agroquímicos homologados para macieira foram realizados em laboratório sobre Neoseiulus californicus (Acari: Phytoseiidae). Os indivíduos testados foram coletados de um pomar comercial da Agriflor Ltda, em Vacaria, Rio Grande do Sul, após várias liberações inoculativas. Os inseticidas utilizados foram os tradiciona
Revista Brasileira de Fruticultura. Publicado em: 2001-12
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9. Determinação multirresiduos de pesticidas em agua por cromatografia liquida de alta eficiencia com enfase em detecção por espectrometria de massas e novos sorventes para extração em fase solida
A multiresidue method for determination of pesticides in water samples was developed. The following pesticides were studied: 2,4-D, linuron, diuron, atrazine, ametryn, tebuthiuron, simazine, dimethoate, carbendazim, carbaryl and 3,4-DCA. Two methods of extraction and preconcentration were compared: liquid-liquid extraction (LLE) and solid-phase extraction (S
Publicado em: 2001
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10. Toxicological Properties of the Organophosphorus Insecticide Dimethoate
The results are presented of extensive toxicological studies on the systemic organophosphate insecticide dimethoate, and compared with published results from other laboratories. It behaves as a typical indirect anticholinesterase, by conversion in the liver to at least four short-lived active metabolites, whose hydrolysis products are rapidly excreted, mainl
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11. Purification and Characterization of a Dimethoate-Degrading Enzyme of Aspergillus niger ZHY256, Isolated from Sewage
A dimethoate-degrading enzyme from Aspergillus niger ZHY256 was purified to homogeneity with a specific activity of 227.6 U/mg of protein. The molecular mass of the purified enzyme was estimated to be 66 kDa by gel filtration and 67 kDa by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The isoelectric point was found to be 5.4, and the enzyme act
American Society for Microbiology.
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12. Microbial cleavage of various organophosphorus insecticides.
Bacteria able to utilize Aspon, Azodrin, Dasanit, diazinon, malathion, Orthene, parathion, Trithion, dimethoate, Dylox, methyl parathion, and Vapona as sole phosphorus sources were isolated from soil and sewage. Individual isolates used from 3 to 10 of these insecticides as sole phosphorus sources. The extent of growth of two Pseudomonas strains in media con