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| Registros recuperados: 77 | |
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| PAIVA,DERISVALDO R.; LIMA,DÊNIS P. DE; AVVARI,NAGA P.; ARRUDA,EDUARDO J. DE; CABRINI,ISAIAS; MARQUES,MARIA RITA; SANTOS,EDSON A. DOS; BIAGGIO,FRANCISCO C.; SANGI,DIEGO P.; BEATRIZ,ADILSON. |
| ABSTRACT Cardanol is a constituent of Cashew Nut Shell Liquid that presents larvicidal activity against Aedes aegypti. The isolation of cardanol is somewhat troublesome, however, in this work we describe an efficient and inexpensive method to obtain it as a pure material. The compound was used as starting material to make chemical transformation leading to saturated cardanol, epoxides and, halohydrins. These derivatives were tested for toxicity against Aedes aegypti larvae. The results showed that iodohydrins are very promising compounds for making commercial products to combat the vector mosquito larvae presenting a LC50 of 0.0023 ppm after 72 h of exposure. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aedes aegypti; Insecticide; Larvicide; Phenolic lipids; CNSL. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200373 |
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| Humeres,Eduardo; Da Cruz,Ivana B.M.; Oliveira,Alice K. de. |
| Effect of age, sex and time exposure of Anastrepha fraterculus (Wied.) to toxicity of fenthion was evaluated. The age of the flies was important to the appearance of the first intoxication symptoms; males and females of reproductive ages (30 and 60 days-old, respectively) were less susceptible to insecticide than flies in the remainder ages (four and 120 days-old). The effect of body weight on insect intoxication was not detected. LT 50 biossay with fenthion (varying from 3-7 minutes) showed a lower susceptibility of males than females at all ages. Adults of both sexes and 30 days-old submitted to continuous and discontinuous exposure to fenthion did not show toxic cumulative effect of the insecticide. The statistical analysis suggests a possible general... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Fruit-fly; Insecticide; Toxicity. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591999000200011 |
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| Seixas,Paula Tatiana Lopes; Demuner,Antonio Jacinto; Alvarenga,Elson Santiago; Barbosa,Luiz Claudio Almeida; Marques,Ana; Farias,Elizeu de Sá; Picanço,Marcelo Coutinho. |
| ABSTRACT: The demand for effective insecticides in pest control with low toxicity to the non-target organisms, such as natural enemies and pollinators, is increasing steadily. A good alternative for synthetic insecticides is natural compounds, including essential oils (EO). This work assessed toxicity of essential oils extracted from Artemisia annua, A. absinthium, A. camphorata, A. dracunculus and A. vulgaris against the melonworm Diaphania hyalinata (Linnaeus, 1758) (Lepidoptera: Crambidae) larvae, a pest of Cucurbitaceae, and their selectivity for fire ant Solenopsis saevissima (Smith) (Hymenoptera: Formicidae) and jataí bee Tetragonisca angustula (Latreille) (Meliponinae). The plants were grown in a greenhouse with mineral fertilization and were used... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solenopsis saevissima; Tetragonisca angustula; Melonworm; Insecticide. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000600519 |
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| Ceruti,Fabiane Cristina; Lazzari,Sonia Maria Noemberg. |
| The use of diatomaceous earth (DE) is a very efficient insect control measure in stored grain IPM due to its low cost, easy application, reduction of active ingredient residues, lower environmental contamination and operator safety. The objective of this research was to evaluate the efficacy of different dosages of DE mixed with powder deltamethrin for controlling Sitophilus zeamais in stored corn. Samples of 100 g of clean and dry corn, in three replicates, were submitted to the following treatments: DE (Keepdry®), at the dosages of 500, 750 and 1000 g/t; powder deltamethrin (K-Obiol®) at 0,5 g a.i. /t and 1,0 g a.i. /t; and combinations of the lowest and highest DE dosages with the two dosages of deltamethrin. Thirty adults of S. zeamais were placed in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grain storage; Inert dust; Insecticide; Sitophilus zeamais. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262005000400020 |
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| RODRIGUES, S. R.; SANCHES, C. S.; FIALHO, E. M. L. M.; ISMAEL, A. P. K.; BARROS, A. T. M. de. |
| A mosca-dos-chifres é considerada um sério problema econômico à pecuária devido aos prejuízos causados à produção e gastos com controle. Este estudo objetivou conhecer o perfil da comercialização e uso dos produtos inseticidas para controle da mosca-dos-chifres no município de Aquidauana, MS. De nov/1999 a nov/2000, informações foram obtidas em estabelecimentos agropecuários na cidade de Aquidauana e em entrevistas com produtores rurais e gerentes de fazendas. Um total de 29 produtos indicados para o controle da mosca foram encontrados nos estabelecimentos, pertencentes aos grupos dos piretróides (58,6%), organofosforados (3,4%), fenil pirazoles (3,4%), lactonas macrocíclicas (3,4%) e associações entre inseticidas (31,0%). A cipermetrina foi o princípio... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Mosca-dos-chifres; Controle; Organofosforado; Piretróide; Aquidauana; Conjtrol; Insecticide; Organophosphate; Pyrethroid; Resistance.; Haematobia Irritans; Inseticida; Resistência.. |
| Ano: 2002 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/810751 |
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| Nawaz,Ahmad; Ali,Habib; Sufyan,Muhammad; Gogi,Muhammad Dildar; Arif,Muhammad Jalal; Ranjha,Mazhar Hussain; Arshid,Muhammad; Waseem,Muhammad; Mustafa,Tariq; Qasim,Muhammad; Rizwan,Muhammad; Zaynab,Madiha; Khan,Khalid Ali; Ghramh,Hamed A.. |
| ABSTRACT American bollworm (ABW), Helicoverpa armigera (Hubner), is considered as a major pest of cotton, Gossypium hirsutum, all over the globe. Due to its destructive feeding nature and continuous consumption of the same chemicals, it devolved resistant against many insecticides. Therefore, a combined application of bio- and synthetic-pesticide need to evaluate against this pest. The entomopathogenic viruses like nuclear polyhedrosis virus (NPV), a member of baculoviruses, can be the potential candidates for better control against ABW. The present study was conducted to assess the comparative efficacy of NPV and Spinosad 240SC (with the concentration of 250 mL · ha-1) against ABW in the controlled environment. The ABW was treated with different... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: American bollworm; Bio-pesticide; Insecticide; Microbial control; NPV. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262019000400277 |
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| Castillo Domínguez, Ernesto. |
| En el estado de Tabasco, localizado en el trópico de México, se tienen plantadas alrededor de 7,000 ha de cedro (Cedrela odorata L), como una respuesta a los procesos de deforestación de la región y como una forma de suplir las necesidades de materia prima de la industria de la madera. La presente investigación tuvo como objetivo evaluar el crecimiento del cedro en etapa juvenil bajo riego, fertilización y aplicación de insecticida y su relación con la incidencia de Hypsipyla grandella Zeller. El estudio se desarrolló de abril a de septiembre de 2008 en una plantación de cedro de 10 meses de edad plantada en marco real de 3x3 m, con una densidad de 1100 plantas/ha, localizada en el municipio de Cárdenas, Tabasco (18°01´N, 93°03´ W). Las variables... |
| Tipo: Tesis |
Palavras-chave: Cedrela odorata; Irrigación; Fertilización; Insecticida; Crecimiento; Maestría; Producción Agroalimentaria en el Trópico; Irrigation; Fertilization; Insecticide; Growth. |
| Ano: 2008 |
URL: http://hdl.handle.net/10521/1569 |
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| McDonald, Tia Michelle; Keating, Ariel Ruth; Fausti, Scott W.; Li, Jing; Lundgren, Jonathan G.. |
| Agriculturally, South Dakota is a unique state possessing the highest rate of adoption for genetically modified crop varieties. In 2009 ninety-six percent of corn acres planted in South Dakota were genetically modified compared with eighty-five percent nationally (Economic Research Service). Additionally, South Dakota has seen a dramatic increase in the number of acres treated with insecticide over the past 20 years. These two situations taken together seem to be counterintuitive. Some genetically modified varieties, such as Bt corn, are equipped with genetic defenses so that they can protect the plant from target pests. Intuitively, one would expect to see a decrease in insecticide use as adoption of genetically modified varieties increase. Recent... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Bt corn; GM crops; Insecticide; Agricultural and Food Policy; Crop Production/Industries; Q1; Q2; Q5. |
| Ano: 2010 |
URL: http://purl.umn.edu/61427 |
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| Registros recuperados: 77 | |
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