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Dissertations / Theses on the topic 'Natural insecticides'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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1

Puniani, Evaloni Takavaha. "Novel natural product based anti-anxiety therapy and natural insecticides." Thesis, University of Ottawa (Canada), 2004. http://hdl.handle.net/10393/29155.

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The EtOH extracts of the leaves of Margraviaceae, a relatively rare Central American vine for which ethnobotanical reports suggested possible anti-anxiety properties, showed significant anti-anxiety activity in animal models for anxiety. Subsequent bioassay-guided fractionation of these extracts yielded an EtOAc active fraction (f1). Further bioassay-directed chromatography of (f1), led to the isolation of betulinic acid (3) as the bioactive constituent in 0.01% of dry weight. Six known pentacyclic triterpenoids [( 1a), (1b), (2a), (2b), ( 4), (5a)], six known flavonoids [(6), ( 7), (8a), (8b)

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2

Anjum, Farida. "Relative toxicity of insecticides to crucifer pests and their natural enemies : interaction of insecticide and insect behaviours." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/24773.

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Pesticides remain a necessary component of many agricultural systems and used judiciously they can play an important role in Integrated Pest Management (IPM) programmes. The aim of the present study was to investigate factors influencing the differential toxicity of insecticides against a cosmopolitan insect pest of crucifer crops, the diamondback moth, Plutella xylostella, and its respective hymenopteran parasitoid, Cotesia vestalis. Such knowledge can help in the effective use of insecticides with biological control agents in IPM. Three insecticides regarded as being compatible with some nat

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3

Samarasekera, Jayaneththi. "Insecticidal natural products from Sri Lankan plants." Thesis, Open University, 1997. http://oro.open.ac.uk/19785/.

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This thesis describes investigations of the insecticidal compounds of three Sri Lankan plants, <i>Pleurostylia opposita</i> (Wall) Alston (Celastraceae), <i>Aegle marmelos</i> Correa (Rutaceae) and <i>Excoecaria agallocha</i> Linn. (Euphorbiaceae). After establishing the insecticidal activity of the extracts of three plants, separation of compounds was achieved by bio-assay directed chromatography, and the compounds were characterised by NMR especially 2D experiments, mass, UV and IR spectroscopy. Three new macrocyclic sesquiterpene polyol ester alkaloids 1, 2 and 3 containing a novel 6,7 ring

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4

McGinley, Susan. "Managing Natural Insecticides: It's Not as Easy as It Sounds." College of Agriculture, University of Arizona (Tucson, AZ), 1992. http://hdl.handle.net/10150/295714.

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5

Ko, Jinren. "Synthetic Applications of Ketene Cycloadditions: Natural and Novel Pyrethroid Insecticides." Thesis, North Texas State University, 1985. https://digital.library.unt.edu/ark:/67531/metadc331031/.

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A new synthetic route to natural and novel pyrethroid acids was developed utilizing ketene cycloaddition which is a significant improvement over existing syntheses. The newly synthesized pyrethroid acids were converted to pyrethroid esters and used to study structure-activity relationships. The cycloaddition of dichloroketene with 2,5-dimethyl-2,4-hexadiene yields (2+2) cycloaddition products, 2,2-dichlorocyclobutanones. The reductive removal of one chlorine atom from these cycloaddition products gave monochlorocyclobutanones which underwent a Favorskii-type ring contraction to yield cis- and

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6

Pullen, Andrew James. "Autumn applied pyrethroid insecticides : consequences for natural enemies of cereal aphids." Thesis, University of Southampton, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293595.

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7

Whalen, Rebecca Anne. "Influence of Selective Insecticides and Cropping System on Arthropod Natural Enemies in Soybean." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/71653.

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Arthropod natural enemies play a key role in controlling potentially damaging pest populations in agroecosystems. An abundant and diverse natural enemy community is associated with higher yields in a variety of crops. Certain aspects of soybean production can make a field more or less amenable to a robust natural enemy community. For instance, commonly used broad-spectrum insecticides which are highly toxic to most arthropods can decrease natural enemy densities and allow for secondary pest outbreaks. Selective insecticides that have less impact on natural enemy populations allow for pest cont

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8

Kielbasiewicz, Ewa. "Sodium channels in insect neuronal membranes as targets for natural neurotoxins and pyrethroids." Angers, 2006. http://www.theses.fr/2006ANGE0017.

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L’utilisation combinée de composés insecticides agissant de façon positivement synergique (i. E. Pyrethrinoïdes, toxines de scorpion et baculovirus) peut être une alternative à l’apparition de phénomènes de résistance développées par les insectes ravageurs. Ceci nécessite néanmoins de bien comprendre le mécanisme d’action de chacun des composés. Différentes techniques d’électrophysiologie ont été utilisées dans ce travail pour étudier (1) l’activité de deux toxines (APE 2-1 et APE 5-3) d’anémone de mer (Anthopleura elegantissima) sur des préparations biologiques d’insecte (axone géant et neuro

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9

Poprawski, Tadeusz Jerży. "Natural enemies of Phyllophaga spp. (Coleoptera: Scarabaeidae) in Southern Quebec, with special reference to entomopathogens." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=72070.

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A systematic survey of the microbial and invertebrate natural enemies of Phyllophaga spp. was conducted from 1979 to 1981 in 45 localities in southern Quebec. Chronic but low (nonepizootic) rates of biotic regulation were found in all host life stages except eggs. The natural enemies included 36 species of predatory and parasitic insects, 15 mite species, six fungal species, five bacterial species, three different nematodes, one virus, one gordian worm, and one sporozoan. Microorganismal pathogenicities to white grubs were demonstrated by infectivity tests and laboratory bioassays using four m

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10

Jenkins, Paul E. "Control of the grape berry moth, Paralobesia viteana, using reduced-risk insecticides, cultural controls, and conservation of natural enemies." Diss., Connect to online resource - MSU authorized users, 2006.

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11

Milesi, Pascal. "Influence de l’architecture génétique et des variations environnementales sur l’adaptation : la résistance aux insecticides chez les moustiques." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS255/document.

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Les mutations sont à l'origine des nombreux "variants" présents dans les populations naturelles. Les variants adaptatifs sont propagés par sélection naturelle. Cependant, une mutation bénéfique sur un trait peut affecter négativement d’autres traits (coût sélectif): un compromis émerge alors entre les avantages et les coûts qu’elle induit. Cette thèse vise à comprendre comment des modifications de l’environnement peuvent affecter les compromis évolutifs de différents types de mutations adaptatives (substitutions, duplications hétérogènes, amplifications). Chez les moustiques, l’utilisation d’i

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Lima, Victor Luiz de Souza. "Manejo fitossanitário para broca-dascucurbitáceas Diaphania nitidalis cramer(Lep.: Crambidae)." Universidade Federal do Espírito Santo, 2009. http://repositorio.ufes.br/handle/10/6621.

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Made available in DSpace on 2016-12-23T14:37:40Z (GMT). No. of bitstreams: 1 Victor Luiz de Souza Lima.pdf: 366904 bytes, checksum: 518a91cdd6b328e0fbb302fba21ce61e (MD5) Previous issue date: 2009-12-13<br>O objetivo do trabalho foi avaliar o potencial de parasitismo de Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) e o efeito de inseticidas naturais (Ricinus communis e Melia azedarach) para o manejo de Diaphania nitidalis (Cramer,1781) (Lepidoptera: Crambidae). Seis temperaturas: 18, 21, 24, 27, 30 e 33 °C foram utilizadas no experimento com T. pretiosum. Os ovos de D. nitida

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Júnior, Paulo Roberto Vieira da Silva. "Ultramicroeletrodo de irídio com filme de mercúrio eletrodepositado para medidas in situ de íons metálicos e pesticidas em solos e águas naturais." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/75/75132/tde-26082009-094714/.

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Neste trabalho foram desenvolvidas metodologias para a determinação de substâncias de interesse, como metais pesados (micronutrientes e contaminantes), macronutrientes e pesticidas em solo e águas naturais com ultramicroeletrodo de irídio recoberto com filme de Hg eletrodepositado (UME Ir-Hg) e técnicas voltamétricas, utilizando uma cápsula porosa de cerâmica como cela eletroquímica. As metodologias de medidas com os ultramicroeletrodos foram desenvolvidas inicialmente em condições controladas e posteriormente aplicadas a medidas in-situ, com experimentos com águas naturais e solos, conduzidos

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Wille, Paulo Eduardo. "Subsídios para o manejo integrado de Chrysodeixis includens (WALKER) (LEPIDOPTERA: NOCTUIDAE) em soja para as regiões do Planalto Sul e Meio Oeste de Santa Catarina." Universidade do Estado de Santa Catarina, 2016. http://tede.udesc.br/handle/handle/2388.

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Submitted by Claudia Rocha (claudia.rocha@udesc.br) on 2018-02-26T16:29:32Z No. of bitstreams: 1 PGPV16MA201.pdf: 1766426 bytes, checksum: 690f1c316be4d0c67b20c202af9f3b70 (MD5)<br>Made available in DSpace on 2018-02-26T16:29:32Z (GMT). No. of bitstreams: 1 PGPV16MA201.pdf: 1766426 bytes, checksum: 690f1c316be4d0c67b20c202af9f3b70 (MD5) Previous issue date: 2016-02-29<br>Capes<br>Soybean is a commodity produced by the United States, Brazil and Argentina countries, which together account for about 70% of the cultivated area. Its use is primarily for soybean meal and cooking oil production. In

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15

Edney, Dean. "Synthetic studies towards guinesine and other naturally occurring sulphur heterocycles." Thesis, University of Nottingham, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284032.

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Lizana, Rojas Diego. "Elaboración y evaluación de extractos del fruto de Melia azedarach L. como insecticida natural." Tesis, Universidad de Chile, 2005. http://www.repositorio.uchile.cl/handle/2250/105065.

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17

Naranjo, Steven E., James R. Hagler, and Peter C. Ellsworth. "Whitefly Management in Arizona: Conservation of Natural Enemies Relative to Insecticide Regime." College of Agriculture, University of Arizona (Tucson, AZ), 1998. http://hdl.handle.net/10150/210374.

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Field studies were conducted in 1997 to evaluate strategies for management of whitefly (Bemisia tabaci). We evaluated the effects of different insecticide regimes (conventional and insect growth regulators [IGR]) on the abundance of native parasitoids and predators associated with whitefly in Arizona cotton. Immature parasitoids were most abundant in untreated control plots and there was little difference among insecticide regimes. Percentage parasitism was low overall (< 30 %), but was highest in Knack plots and lowest in untreated control and Applaud plots. Predator populations were lowest i

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18

Eyraud, Vanessa. "Etude d’un insecticide naturel nommé PA1b : Mécanisme d’action et expression hétérologue." Thesis, Lyon, INSA, 2014. http://www.theses.fr/2014ISAL0020/document.

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Dans un contexte où l’utilisation de substance chimique en agriculture est de plus en plus décriée, il est nécessaire de trouver de nouveaux moyens de protections des cultures, tout en maintenant une agriculture économiquement performante. Ainsi, un peptide extrait de graines de pois nommée PA1b (Pea Albumin 1 sous-unité b), présentant une forte activité insecticide a été découvert au laboratoire. PA1b provoque chez l’insecte modèle du laboratoire, le charançon des céréales Sitophilus sp., 100% de mortalité. L’action de PA1b passe par la liaison à un récepteur présent chez les charançons sensi

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Beddie, David G. "Isolation, characterisation and synthesis of insecticidal natural products of the Myrtaceae family." Thesis, University of Nottingham, 1998. http://eprints.nottingham.ac.uk/30648/.

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New insecticidal natural products are required to find compounds with higher intrinsic activities to lower field application rates, and with novel modes of action to combat insect pest species which have developed resistance to current commercial insecticides. Using a taxonomic approach, studies on plants of the Myrtaceae family led to the isolation and characterisation of a range of insecticidal natural products 1 - 9 (figure 1). These compounds are all structurally related as they contain a tetramethylcyclohexenedione group, attached to either a terpene or a phloroglucinol moiety. Seven of t

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20

Clayson, Paul. "Insecticide tolerance of aphids and their natural enemies on different cultivars of a crop." Thesis, University of Reading, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343171.

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21

Ludwig, Tobias. "Regulierung von Rapsschädlingen im ökologischen Winterrapsanbau durch den Mischanbau mit Rübsen (Brassica rapa L. var. silvestris (Lam.) Briggs) sowie den Einsatz naturstofflicher Pflanzenschutzmittel." Doctoral thesis, Humboldt-Universität zu Berlin, Landwirtschaftlich-Gärtnerische Fakultät, 2013. http://dx.doi.org/10.18452/16759.

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An drei Standorten wurde die schädlingsregulierende Wirkung einer Raps-Rübsen-Mischsaat (Verhältnis 9:1) gegenüber einer Raps-Reinsaat bewertet. Des Weiteren wurden naturstoffliche und nach § 6a PflSchG selbst hergestellte Pflanzenschutzmittel als auch eine Käfersammelmaschine zur Regulierung der Stängelrüssler (Ceutorhynchus spp.) und des Rapsglanzkäfers (Meligethes aeneus F.) in Labor- und Freilandversuchen angewandt. In der Mischsaat war die Schaderregerabundanz gegenüber der Reinsaat zumeist erhöht. Diese führte zu einem teils signifikant stärkeren Schaderregerbefall der Rapspflanzen in de

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22

Liu, Su Qi. "The Activity of Analogs of the Natural Product Dillapiol and Sessamol as Detoxification Enzyme Inhibitors and Insecticide Synergists." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32997.

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In the present thesis, analogs of the plant derived compound, dillapiol, were investigated for their potential as cytochrome P450 inhibitors and insecticide synergists. Dillapiol was chosen as a lead compound because it has a methylenedioxyphenyl (MDP) functionality that serves as a cytochrome P450 inhibitor and reported insecticide synergist activity comparable to the commercially used piperonyl butoxide (PBO). Initially a set of fifty two dillapiol analogs was investigated for inhibition of cytochrome P450 using cloned Human CYP3A4, a highly standardized preparation that allowed accurate det

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Quispe, Tippe Luis Gerardo. "Estudio de pre-factibilidad para la producción y exportación del barbasco en polvo como insumo de insecticidas y pesticidas naturales al mercado de los Estados Unidos." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2016. http://tesis.pucp.edu.pe/repositorio/handle/123456789/7758.

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A través de los cinco capítulos del presente estudio de pre-factibilidad, se demuestra la factibilidad técnica, legal, económica y financiera de la implementación de una fábrica de molido de raíz de barbasco para su exportación al mercado de los EE.UU. En primer lugar, en el estudio estratégico se analizaron los factores macro y micro ambientales; se definieron la misión, visión y un análisis FODA que delimitó una estrategia genérica de diferenciación, industrializando el producto, promocionando su uso por sus características biodegradables y repotenciándola como alternativa a la hoja de

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Esquivel, Palma Carlos Josue. "TOXICOLOGICAL INTERACTIONS BETWEEN THIAMETHOXAM, APHIDS, AND PREDATORY NATURAL ENEMIES." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1574435608424832.

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LEMACON, TEISSIER CATHERINE. "Les pyrethres naturels et les pyrethrinoides de synthese en medecine du travail." Limoges, 1988. http://www.theses.fr/1988LIMO0136.

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López, Belchí María Dolores. "Toxicidad volátil de monoterpenoides y mecanismos bioquímicos en insectos plaga del arroz almacenado." Doctoral thesis, Universidad de Murcia, 2008. http://hdl.handle.net/10803/11037.

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Algunas plagas causan daños importantes en productos y granos almacenados, lo cual conlleva consecuentemente a pérdidas de producción y calidad en estos productos.Las principales plagas del arroz almacenado en España son, Sitophilus oryzae L. (Coleoptera Curculionidae), Rhyzopertha dominica Fabricius (Coleoptera: Bostrichidae), y Cryptolestes pusillus Schönherr (Coleoptera: Cucujidae). Las dos primeras son plagas primarias que atacan directamente el grano y resultan bastante destructivas debido a que sus larvas se alimentan y desarrollan dentro de él. C.pusillus es, sin embargo, una plaga secu

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Lucas, Philippe. "Perception des composes pheromonaux chez mamestra suasa et mamestra brassicae (lepidopteres : noctuidae). mecanismes naturels et effets de quelques insecticides." Paris 6, 1990. http://www.theses.fr/1990PA066217.

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Dans la premiere partie de ce travail, une etude comparee sur les males de m. Suasa et m. Brassicae des mecanismes naturels de la reception des composes pheromonaux a ete menee par eag et enregistrement unitaire couple a la micro-informatique de l'activite des neurones olfactifs de l'antenne. Les resultats de ces tests associes a une etude en tunnel de vol du comportement d'orientation des males et a l'observation de la morphologie des structures sensorielles de l'antenne nous ont permis d'analyser le codage peripherique des composes pheromonaux chez m. Suasa. L'etablissement des profils de se

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Cantin, Sanz Angel. "Síntesis de productos naturales y análogos biológicamente activos, derivados de Penicillium brevicompactum Dierckx." Doctoral thesis, Universitat Politècnica de València, 2009. http://hdl.handle.net/10251/5022.

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En la presente tesis se han desarrollado unas secuencias sintéticas que han permitido la confirmación de las estructuras de los metabolitos aislados previamente de Penicillium brevicompactum, bien sea por síntesis total de los mismos o por preparación de sustancias análogas que hacen inequívoca la asignación realizada en un principio. Por otro lado, se han utilizado las rutas sintéticas abiertas para la consecución de diferentes análogos con el fin de establecer relaciones estructura-actividad que permitan la optimización de las actividades observadas para los productos naturales aislados. Tod

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Bakas, Idriss. "Modélisation moléculaire et synthèse de polymères à empreintes moléculaires pour l’extraction sélective sur phase solide d’insecticides organophosphorés à partir d’échantillons naturels : application à l’huile d’olive." Perpignan, 2012. http://www.theses.fr/2012PERP1169.

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L’analyse des insecticides organophosphorés à l’état de traces dans des échantillons complexes tels que les matrices environnementales ou les denrées alimentaires nécessite une étape de purification avant l’analyse afin de limiter la présence d’effets de matrice. L’extraction sur phase solide (SPE) est devenue la méthode de choix pour ce type de traitement de l’échantillon. Divers supports d’extraction sont disponibles mais ils peuvent entraîner des coextractions d’interférents gênant l’analyse. Afin de pallier ce manque de sélectivité, des supports sélectifs fondés sur des mécanismes de recon

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BANDEIRA, Gustavo Neto. "Efeito de extratos vegetais e óleos essenciais no desenvolvimento de Plutella xylostella (L.) (Lepidoptera:Plutellidae)." Universidade Federal Rural de Pernambuco, 2009. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5977.

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Submitted by (edna.saturno@ufrpe.br) on 2016-11-24T16:14:21Z No. of bitstreams: 1 Gustavo Neto Bandeira.pdf: 480654 bytes, checksum: e048697a909f44f9284d66f9f557a5c9 (MD5)<br>Made available in DSpace on 2016-11-24T16:14:22Z (GMT). No. of bitstreams: 1 Gustavo Neto Bandeira.pdf: 480654 bytes, checksum: e048697a909f44f9284d66f9f557a5c9 (MD5) Previous issue date: 2009-07-01<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>The family Brassicaceae is one of the most economically important in the world, having as their main pest to Plutella xylostella (L.) (Lepidoptera:

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Hubert, Marie. "Structure de mycotoxines et d'analogues- recherche de leurs métabolites chez un insecte hôte." Rouen, 1998. http://www.theses.fr/1998ROUES037.

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Dans l'optique d'utiliser les mycotoxines en tant que bioinsecticides potentiels de nouvelle génération, nous nous sommes intéressés à celles de deux champignons entomopathogènes, Metarhizium anisopliae et Paecilomyces farinosus. Celles de M. Anisopliae, les destruxines (DTXs), sont des cyclohexadepsipeptides connus depuis plusieurs décennies. Sur le plan structural, une systématique de fragmentation de ces composés a été mise au point par PFAB/MS/Linked Scan. Au niveau biologique, nous avons complété les études sur le comportement in vivo des destruxines. Les métabolites des DTXs A et E, dest

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PESSOA, Mariana Cavalcante Pedrosa. "Avaliação da toxicidade do extrato contendo Nim (Azadirachta indica L.),andiroba (Carapa guianensis Aublet) e cana-de-açúcar (Saccharum officinarum L.) em ratas Wistar." Universidade Federal Rural de Pernambuco, 2009. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5779.

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Submitted by (edna.saturno@ufrpe.br) on 2016-10-20T11:58:16Z No. of bitstreams: 1 Mariana Cavalcante Pedrosa Pessoa.pdf: 452557 bytes, checksum: 1e126771620da8738a5b5092e4075724 (MD5)<br>Made available in DSpace on 2016-10-20T11:58:16Z (GMT). No. of bitstreams: 1 Mariana Cavalcante Pedrosa Pessoa.pdf: 452557 bytes, checksum: 1e126771620da8738a5b5092e4075724 (MD5) Previous issue date: 2009-02-23<br>Currently the demand for insecticides of natural origin it has been growing, mainly because they are biodegradable, thus avoiding contamination of the environment and harm people's health. Among

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França, Juliana Luzia. "Purificação e caracterização parcial de ATPase de larvas de Zabrotes subfasciatus (Coleóptera: Chrysomelidae: Bruchinae) e modulação fitoterápica de sua atividade." Universidade Federal de Uberlândia, 2009. https://repositorio.ufu.br/handle/123456789/15819.

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Fundação de Amparo a Pesquisa do Estado de Minas Gerais<br>Zabrotes subfasciatus is the most common pest of the stored beans (Phaselous vulgaris). This study was carried out to characterize ATPase from Z. subfasciatus larvae and to investigate its phytotherapy modulation. Larvae extracted from Phaseolus vulgaris were firstly homogenised in extraction buffer, and then centrifuged 45000g for 30min at 4ºC. Supernatant was fractioned with ammonium sulfate, precipitaded fraction on 45-80% saturation was homogenized in reduction ionic strength buffer, centrifuged and the supernatant was applied in i

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Lorencetti, Grasielle Adriane Toscan. "Efeito de fungos entomopatogênicos e produtos naturais sobre Thaumastocoris peregrinus Carpinteiro & Dellapé (Hemiptera: Thaumastocoridade) e na indução de resistência em plantas." Universidade Tecnológica Federal do Paraná, 2013. http://repositorio.utfpr.edu.br/jspui/handle/1/527.

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O percevejo bronzeado, Thaumastocoris peregrinus Carpintero & Dellapé (Hemiptera: Thaumastocoridae), é um inseto-praga de origem australiana, que ataca espécies do gênero Eucalyptus em vários países. No Brasil, sua ocorrência foi relatada em 2008 do Rio Grande do Sul e em junho de 2012 foi registrada ocorrência na região sudoeste do Paraná. Também foram encontrados insetos possivelmente sendo atacados pelo fungo entomopatogênico Beauveria bassiana em campo. Após procedimentos de isolamento e identificação, o fungo foi armazenado e denominado UTFPR 01. Com a verificação do potencial de controle

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Manwill, Preston Kim. "Discovery and Development of Natural Products from Plant and Microbial Sources: Drimane Sesquiterpenes and Abyssomicins as Mosquito Control and Antimicrobial Agents." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1591285556969447.

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ARAÚJO, FILHO José Menezes de. "Seleção de fungos entomopatogênicos associados ao óleo de nim para controle do pulgão Lipaphis erysimi (Kalt.) (Hemiptera : Aphididae) em couve." Universidade Federal Rural de Pernambuco, 2008. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5979.

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Submitted by (edna.saturno@ufrpe.br) on 2016-11-24T16:39:07Z No. of bitstreams: 1 Jose Menezes Araujo Junior.pdf: 362260 bytes, checksum: ad127ee31030ace5f6a04e4c2c1df8cb (MD5)<br>Made available in DSpace on 2016-11-24T16:39:07Z (GMT). No. of bitstreams: 1 Jose Menezes Araujo Junior.pdf: 362260 bytes, checksum: ad127ee31030ace5f6a04e4c2c1df8cb (MD5) Previous issue date: 2008-02-01<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>The aphid, Lipaphis erysimi (Kalt.) (Hemiptera: Aphididae), is considered an important pest of kale in Brazil. Botanical insecticides and

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Campos, Aniele Pianoscki de [UNESP]. "Efeito de óleo de nim (Azadirachta indica) sobre Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae) e Podisus nigrispinus (Dallas, 1851) (Hemiptera: Pentatomidae)." Universidade Estadual Paulista (UNESP), 2012. http://hdl.handle.net/11449/102285.

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Made available in DSpace on 2014-06-11T19:31:46Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-03-08Bitstream added on 2014-06-13T20:42:36Z : No. of bitstreams: 1 campos_ap_dr_jabo.pdf: 647831 bytes, checksum: a5c9633a776144e005d4a3939d3b32b8 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Este trabalho teve como objetivo selecionar doses de óleo de nim com efeito na mortalidade de lagartas de Spodoptera frugiperda, além de estudar os efeitos diretos sobre Podisus nigrispinus quando aplicados via tópica ou oferecidos via ingestão no desenvolvimento e m

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Campos, Aniele Pianoscki de. "Efeito de óleo de nim (Azadirachta indica) sobre Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae) e Podisus nigrispinus (Dallas, 1851) (Hemiptera: Pentatomidae) /." Jaboticabal : [s.n.], 2012. http://hdl.handle.net/11449/102285.

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Orientador: Arlindo Leal Boiça Júnior<br>Banca: Tatiana Rodrigues Carneiro<br>Banca: Moacir Rossi Forim<br>Banca: Ricardo Antonio Polanczyk<br>Banca: Antonio Carlos Busoli<br>Resumo: Este trabalho teve como objetivo selecionar doses de óleo de nim com efeito na mortalidade de lagartas de Spodoptera frugiperda, além de estudar os efeitos diretos sobre Podisus nigrispinus quando aplicados via tópica ou oferecidos via ingestão no desenvolvimento e mortalidade desse predador e estudar os efeitos indiretos, após sua ingestão por lagartas de S. frugiperda, no desenvolvimento e na capacidade predatór

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BREDA, Mariana Oliveira. "Efeitos letais e subletais de inseticidas botânicos sobre Aphis gossypii Glover (Hemiptera : Aphididae) e Cycloneda sanguinea (Linnaeus) (Coleoptera : Coccinellidae) em cultivares de algodão de fibra branca e colorida." Universidade Federal Rural de Pernambuco, 2011. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6003.

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Submitted by (edna.saturno@ufrpe.br) on 2016-11-28T14:10:41Z No. of bitstreams: 1 Mariana Oliveira Breda.pdf: 588678 bytes, checksum: dfbffb2bf31e84d654f1e337dae28971 (MD5)<br>Made available in DSpace on 2016-11-28T14:10:41Z (GMT). No. of bitstreams: 1 Mariana Oliveira Breda.pdf: 588678 bytes, checksum: dfbffb2bf31e84d654f1e337dae28971 (MD5) Previous issue date: 2011-02-01<br>Aphis gossypii Glover is one of the major pest of cotton in Brazil, causing direct and indirect damage through viruses transmission. In alternative production systems, the control of this pest is carried out by natura

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Freitas, Tais Garcia. "Toxicidade de extratos de Rauia sp. (Rutaceae) para operárias de Atta sexdens rubropilosa Forel (Hymenoptera: Formicidae) /." Rio Claro : [s.n.], 2010. http://hdl.handle.net/11449/99542.

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Orientador: Odair Correa Bueno<br>Banca: Sandra Verza da Silva<br>Banca: Tatiane Regina Albarici<br>Resumo: As formigas estão presentes em quase todos os habitats do planeta. Na maioria das vezes não causam danos ao homem, mas em ambientes modificados, como áreas agrícolas, podem gerar grandes populações e acabar sendo consideradas pragas. As saúvas são chamadas de formigas cortadeiras, pelo hábito que elas têm de cortar as folhas das plantas. Causam danos econômicos justamente pelo desfolhamento que produzem nos vegetais. Para realizar o controle dessas pragas, muitos produtos químicos são ut

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Freitas, Tais Garcia [UNESP]. "Toxicidade de extratos de Rauia sp. (Rutaceae) para operárias de Atta sexdens rubropilosa Forel (Hymenoptera: Formicidae)." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/99542.

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Made available in DSpace on 2014-06-11T19:30:15Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-09-02Bitstream added on 2014-06-13T20:20:36Z : No. of bitstreams: 1 freitas_tg_me_rcla.pdf: 908317 bytes, checksum: 622170ef2379b608fbd5ce47ef8998d2 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>As formigas estão presentes em quase todos os habitats do planeta. Na maioria das vezes não causam danos ao homem, mas em ambientes modificados, como áreas agrícolas, podem gerar grandes populações e acabar sendo consideradas pragas. As saúvas são chamadas de formigas cor

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SILVA, Cleia Gomes Vieira e. "Bioatividade de extratos etanólicos de Croton sobre Plutella xylostella (L) e ação fumigante e composição química de óleos essenciais de Croton grevioides (Baill.) sobre Zabrotes subfasciatus (Boheman)." Universidade Federal Rural de Pernambuco, 2007. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5963.

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Submitted by (edna.saturno@ufrpe.br) on 2016-11-23T15:22:35Z No. of bitstreams: 1 Cleia Gomes Vieira e Silva.pdf: 397357 bytes, checksum: 224e5b48f721843c7d8a272b57e0013f (MD5)<br>Made available in DSpace on 2016-11-23T15:22:35Z (GMT). No. of bitstreams: 1 Cleia Gomes Vieira e Silva.pdf: 397357 bytes, checksum: 224e5b48f721843c7d8a272b57e0013f (MD5) Previous issue date: 2007-07-02<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>Plants constitute natural sources of insecticide substances and have been used by mankind since Antiquity. It is also known that medic

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Machado, Willian Alves. "Tecnologias de aplicação do imidacloprido no controle do pulgão-dos-cereais (Schizaphis graminum) em trigo e seus efeitos sobre inimigos naturais Uberlândia Minas Gerais – Brasil 2017." Universidade Federal de Uberlândia, 2017. http://dx.doi.org/10.14393/ufu.di.2017.24.

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Uma das principais espécies encontradas em trigo é o pulgão-dos-cereais, Schizaphis graminum (Rondani, 1852), o qual reduz substancialmente a produção de grãos, retarda o crescimento de raízes e prejudica o perfilhamento. Como consequência do ataque, é comum a aplicação de inseticidas que mal manejados acarretam uma série de prejuízos econômicos e ambientais. O objetivo desse trabalho foi estudar as combinações entre taxas de aplicação, pontas e adjuvantes no controle químico do pulgão-dos-cereais na cultura do trigo e os impactos ambientais sobre as populações de seus inimigos naturais. Foram

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López, Gresa Mª Pilar. "Aislamiento, purificación y caracterización estructural de nuevos principios bioactivos a partir de extractos fúngicos." Doctoral thesis, Universitat Politècnica de València, 2008. http://hdl.handle.net/10251/1823.

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La naturaleza es una fuente inagotable de metabolitos secundarios, muchos de los cuales llegan a ser verdaderas herramientas farmacológicas, que pueden tanto tener una utilidad terapéutica como ayudar a comprender el funcionamiento de diversos procesos metabólicos. Las propiedades biológicas de estos compuestos son muy diversas: antitumoral, antibiótica, citostática, inmunomodular, antifúngica, antioxidante, insecticida o antiinflamatoria. Principalmente se obtienen a partir de plantas superiores, organismos marinos, hongos microscópicos y bacterias. La variedad de estructuras carbonadas, las

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(8066012), Ivan Grijalva. "Impact of Insecticides on Cucumber Beetles (Coleoptera: Chrysomelidae) and Spider Predators in Watermelon and Corn." Thesis, 2019.

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<p>The primary goal of this research study was to provide updated pest management recommendations to growers, including the reduction of insecticide applications on a calendar basis by the use of pest economic thresholds, with the purpose of maximizing insecticide efficacy while minimizing the associated negative impacts on natural enemies and their ecosystem services. </p> <p>Commercial watermelon (<i>Citrullus lanatus</i>) production in the Midwest typically relies on neonicotinoid and pyrethroid insecticides to manage insect pests, particularly striped and spotted cucumber beetles (<i>Acal

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Coates, Thomas James Dagless. "The influence of some natural enemies and pesticides on various populations of Tetranychus cinnabarinus (Boisduval), T. Lombardinii Baker and Pritchard and T. Ludeni Zacher (Acari : Tetranychidae), with aspects of their biologies." Thesis, 2014. http://hdl.handle.net/10210/11781.

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D.Sc. (Zoology)<br>The influence of some natural enemies and pesticides was studied on Tetranychus cinnabarinus (Boisduval), T. lombardinii Baker & Pritchard and T. ludeni Zacher (Acari: Tetranychidae). Two important predators were discovered, viz: Pardosa crassipalpis (Purcell) (Arachnida: Araneida) and Labidura riparia (Insecta: Dermaptera). Both are more susceptible to some acaricides, especially dimethoate, than the mites. It is proved that the injudicious use of these acaricides, also of DDT and carbaryl, can cause an outbreak of these mites. As to the biologies of the species, the appear

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Russo, Serafina. "Toxicidad, efecto antialimentario y repelente de metabolitos secundarios de Eucalyptus globulus (Labill) (Myrtaceae) sobre coleópteros de importancia agrícola." Tesis, 2013. http://hdl.handle.net/10915/29819.

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Las plantas aromáticas y sus aceites esenciales han sido utilizados desde la antigüedad como condimento, por su sabor y aroma; también como agente antimicrobiano e insecticida, para repeler insectos y/o para proteger los productos almacenados. Constituyen eficaces alternativas a los plaguicidas sintéticos convencionales de amplio espectro con baja toxicidad para el medio ambiente, mayor biodegradabilidad y baja generación de resistencia. El objetivo de este trabajo fue: I) analizar la composición química y rendimiento de los aceites esenciales extraídos de hojas juveniles y adultas de Eucalypt

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Scheffer, Timo. "Aufbau von Bausteinen zur Synthese von Spinosynanaloga." Doctoral thesis, 2012. http://hdl.handle.net/11858/00-1735-0000-000D-F049-7.

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Francesena, Natalia. "Efectos letales y subletales de insecticidas sobre Bemisia tabaci y su principal parasitoide Eretmocerus mundus e impacto sobre aspectos comportamentales del mismo." Tesis, 2015. http://hdl.handle.net/10915/46115.

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El control biológico de plagas mediante enemigos naturales (parasitoides, depredadores y entomopatógenos) es una de las estrategias de control que promueve en sus premisas el Manejo Integrado de Plagas (MIP). En los últimos años ha habido un incremento sobre la importancia económica de estos enemigos en la agricultura y de las restricciones de los métodos tradicionales de control a través del uso de plaguicidas. En este sentido, el empleo de enemigos naturales para el control biológico de plagas ha aumentado considerablemente a nivel mundial, a través de la importación de especies (control bi

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Conceição, Carlos Alberto Francisco da. "Potencialidades de produtos naturais de origem vegetal como meio de protecção contra Sitophilus zeamais Motschulsky (Coleoptera: curculionidae) em milho armazenado." Doctoral thesis, 2009. http://hdl.handle.net/10400.5/1873.

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Doutoramento em Engenharia Agronómica - Instituto Superior de Agronomia<br>Laboratory studies were carried out in order to evaluate the effects of some formulations from Mentha pulegium L., Lonchocarpus sericeus (Poir.) Kunt, Daphne gnidium L., Laurus nobilis L., Momordica charantia L., Nerium oleander L. and Ptaeroxylon obliquum (Thumb.) Radlk against adult insects of Sitophilus zeamais Motsch. on stored maize. The dusts from leaves of L. nobilis at 30% w/w provided 86% of mortality and reduced F1 progeny emergence up to 68%. At same concentration, dusts of pink flowers from N. oleander

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