Insecticide
Mostrando 13-24 de 461 artigos, teses e dissertações.
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13. An Alternative Spectrophotometric Determination of Carbaryl Insecticide Residues in Water Samples Using the Cerium-Catalyzed Belousov-Zhabotinsky Oscillating Reaction
An alternative approach for carbaryl determination based on the change in the oscillation period of the Belousov-Zhabotinsky (BZ) reaction under the addition of carbaryl is demonstrated. The oscillations were observed by spectrophotometric measurement at 320 nm, corresponding to the maximum absorption wavelength of cerium(IV) catalyst. The oscillation period
J. Braz. Chem. Soc.. Publicado em: 2020-05
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14. Metabolization of Insecticidal Amides from Leaves of Piper tuberculatum by Heraclydes hectorides and Naupactus bipes
Amides have been recognized as potent insecticidal natural products but, despite their variety of targets and mechanisms of action, their metabolic fate in insects is virtually unknown. The currently accepted hypothesis is that specialist herbivores are capable of biotransforming xenobiotics rendering them more polar and excretable while generalist insects d
J. Braz. Chem. Soc.. Publicado em: 2020-04
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15. DESENVOLVIMENTO DE METODOLOGIAS ANALÍTICAS PARA DETERMINAÇÃO DE CLORPIRIFÓS EM AMOSTRAS AQUOSAS EMPREGANDO A MICROEXTRAÇÃO LÍQUIDO-LÍQUIDO DISPERSIVA SEGUIDA POR HPLC-UV
The miniaturized extraction techniques use less aggressive methods to the environment, since they generate less waste and spend a minimum of organic solvents, besides having a good selectivity and specificity in the extractions. In this context, liquid-liquid dispersive microextraction (DLLME) has been highlighting. Thus, the present article describes an opt
Quím. Nova. Publicado em: 2020-01
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16. Persistence of insecticides used in peach orchards to larvae and adults of the predator Chrysoperla externa (Neuroptera: Chrysopidae)
RESUMO Este trabalho teve como objetivo avaliar a persistência (duração da atividade nociva) de cinco inseticidas utilizados no controle de pragas em pessegueiro, em larvas e adultos do predador Chrysoperla externa. Os inseticidas foram pulverizados em plantas de videira cv. Bordô utilizando-se a máxima dosagem recomendada para o pessegueiro. Semanalmen
Arq. Inst. Biol.. Publicado em: 14/11/2019
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17. Factors related to the economic performance of wheat commercial fields
ABSTRACT The variability of agronomic performance and of input use level of wheat commercial fields allows the identification of the factors with the greatest contribution to its economic performance. The objective of this work was to identify the main factors related to the variability of economic performance in wheat commercial fields in the Southern Regio
Rev. Ceres. Publicado em: 11/11/2019
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18. Susceptibility of boll weevil to ready-to-use insecticide mixtures
RESUMO: Bicudo-do-algodoeiro é a principal praga do algodoeiro no Brasil, sendo o uso de inseticidas amplamente recomendado para o seu controle. A suscetibilidade do bicudo-do-algodoeiro foi determinada a inseticidas em formulação simples ou em misturas prontas para uso, as quais têm sido recomendadas para pulverizar campos de algodão sob a hipótese de
Arq. Inst. Biol.. Publicado em: 21/10/2019
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19. Tank mixture of pesticides and foliar fertilizers for Triozoida limbata control in guava trees (Psidium guajava L.)
ABSTRACT Although tank mixture of pesticides and foliar fertilizers is common practice in agriculture, further clarification and scientific evidence is needed to support regulation. Thus, the objective of this work was to evaluate the effect of tank mixing an organosilicon adjuvant and manganese foliar fertilizer on the insecticide imidacloprid effectiveness
Rev. Ceres. Publicado em: 03/10/2019
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20. Control of Chrysodeixis includens (Lepidoptera: Noctuidae) using Chin-IA (I-A) isolate as integrate component of management in soybean crops
RESUMO Chrysodeixis includens é uma importante praga da cultura da soja que tem ganhado maior visibilidade na região do Cerrado brasileiro em razão do dano causado. Consumo foliar, período de alimentação e mortalidade de lagartas falsa-medideira foram avaliados em laboratório, assim como seu controle em condições de campo, após a aplicação do ví
Arq. Inst. Biol.. Publicado em: 26/09/2019
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21. Effect of seed treatment with insecticides on the control of Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) in soybean
RESUMO A lagarta-do-cartucho é um dos principais insetos-praga no Brasil. Assim, o presente trabalho teve por objetivo avaliar o efeito do tratamento de sementes no controle de Spodoptera frugiperda nas infestações iniciais da cultura da soja. O delineamento experimental foi inteiramente casualizado, com quatro amostras replicadas de seis tratamentos inse
Arq. Inst. Biol.. Publicado em: 26/09/2019
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22. Insecticide resistance and control failure likelihood among populations of the boll weevil (Anthonomus grandis) from Mato Grosso (Brazil)
ABSTRACT. The cotton producers from southern Mato Grosso are currently experiencing control failure with the use of the use of insecticides against the cotton boll weevil Anthonomus grandis Boheman, the main pest species of this commodity. Therefore, the present study was designed to survey insecticide resistance and the associated likelihood of control fail
Acta Sci., Agron.. Publicado em: 23/09/2019
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23. Liaisons dangereuses: cross-border gene flow and dispersal of insecticide resistance-associated genes in the mosquito Aedes aegypti from Brazil and French Guiana
BACKGROUND In recent years, South America has suffered the burden of continuous high impact outbreaks of dengue, chikungunya and Zika. Aedes aegypti is the main mosquito vector of these arboviruses and its control is the only solution to reduce transmission. OBJECTIVES In order to improve vector control it is essential to study mosquito population geneti
Mem. Inst. Oswaldo Cruz. Publicado em: 23/09/2019
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24. Sanitary quality of soybean seeds treated with fungicides and insecticides before and after storage
Resumo: Os fungos são considerados os mais importantes dentre os patógenos devido ao maior número de espécies e aos danos causados tanto no rendimento quanto na qualidade das sementes. Assim, objetivou-se verificar o efeito do tratamento fungicida e inseticida na qualidade sanitária e no desempenho fisiológico de sementes de soja antes e após o armaze
J. Seed Sci.. Publicado em: 09/09/2019