Hot extrusion

Cox, R. N.

doi:10.1049/tpe.1961.0046

Cited by 1 publication

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“…The first step in IPM is to perform effective monitoring through the uses of pheromones. [1][2][3] Pheromones are substances which occur in nature and are used for chemical communication between animals of the same species. The main ways by which pheromones can be exploited to control pests are monitoring, mating disruption and mass trapping.…”

Section: Introductionmentioning

confidence: 99%

“…The main ways by which pheromones can be exploited to control pests are monitoring, mating disruption and mass trapping. [1][2][3] Such pheromone applications provide significant cost and environmental benefits to the farmer, the consumer, and society. Reliable pheromone lures are already in use in Brazilian orchards for monitoring the seasonal abundance of the Oriental fruit moth, Grapholita molesta (Lepidoptera: Tortricidae), the main pest in apple and other temperate fruits in Brazil.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of porous silica glasses as insect pheromone dispensers

Tiboni

Coracini

Lima

et al. 2008

J. Braz. Chem. Soc.

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Este trabalho demonstra a viabilidade da utilização de vidros porosos como materiais para armazenar e liberar feromônios de insetos, visando o controle de pragas na agricultura. Feromônios de diferentes insetos foram impregnados em vidros porosos do tipo Vycor (PVG), e o material impregnado foi caracterizado por espectroscopia de absorção no infravermelho. A determinação da taxa de liberação do feromônio em laboratório, bem como o teste prático de captura de insetos em diferentes plantações, foram subseqüentemente realizados. Foram realizados testes com feromônios da Grapholita molesta (Lepidoptera: Tortricidae) e Leucoptera coffeella (Lepidoptera: Lyonetiidae), as principais pestes da maçã e café, respectivamente, em plantações brasileiras. Verificou-se que a taxa de liberação do feromônio depende do tipo de interação com as paredes dos poros do PVG. Os resultados indicaram uma boa performance do PVG, semelhante à de septos de borracha utilizados comercialmente como liberadores. Estes resultados, somados ao fato de que o PVG não é nocivo ao meio ambiente e pode ser reutilizado em vários ciclos de impregnação e liberação, fazem destes vidros porosos candidatos em potencial para aplicação no controle de pragas na agricultura.This work demonstrates the viability and advantages of using porous silica glass as an insect pheromone dispenser, in order to control insect population in agriculture. Pieces of so-called Porous Vycor Glass (PVG) were impregnated with pheromones of different insects (both consisting of a single compound or a mixture of compounds). Studies were conducted to characterize the impregnated-PVG and to determine the pheromone release ratio under laboratory conditions. The practical application was verified in two different plantation areas, using the PVG impregnated with pheromone from Grapholita molesta (Lepidoptera: Tortricidae) and Leucoptera coffeella (Lepidoptera: Lyonetiidae), the main pests of apple and coffee plantations in Brazil, respectively. The release rate was dependent on the interaction between the molecules of the impregnated pheromone and the surface of the PVG pores. A good performance of the porous glass was observed, similar to that of rubber septa commercially used as pheromone dispensers.Keywords: porous glass, adsorption, pheromones, slow release, chemical ecology IntroductionThe number of insects and other species that are developing resistance to pesticides is growing steadily, forcing chemical companies to work out novel pesticide formulas. The concept of integrated pest management (IPM) was developed in response to the problems caused by the increased use of conventional pesticides. IPM combines chemical, biological, and agrotechnical approaches to achieve pest control at a reasonable cost, while minimizing damage to the environment. The first step in IPM is to perform effective monitoring through the uses of pheromones. [1][2][3] Pheromones are substances which occur in nature and are used for chemical communication between animals of the same species. The main ways by ...

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%