Log in

Relevant bibliographies by topics / Pest control chemicals / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Pest control chemicals.

Dissertations / Theses on the topic 'Pest control chemicals'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Pest control chemicals.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Cu, Ramon M. "Development and evaluation of a computerized leafspot advisory program for effective use of cultivar resistance, fungicide, and spray adjuvant to control early leafspot of peanut." Diss., This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-07282008-141910/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Castilhos, Rodolfo Vargas. "Seletividade de agrotóxicos utilizados na cultura do pessegueiro ao predador Chrysoperla externa (Hagen, 1861) (Neuroptera: Chrysopidae)." Universidade Federal de Pelotas, 2010. http://repositorio.ufpel.edu.br/handle/ri/2087.

Full text

Abstract:

Made available in DSpace on 2014-08-20T14:07:34Z (GMT). No. of bitstreams: 1 dissertacao_rodolfo_vargas_castilhos.pdf: 378851 bytes, checksum: 0d6e42041b0313486f844bb4e5027f75 (MD5) Previous issue date: 2010-03-08<br>In peach crops, the chemical control is the most used method in pest management, however, in sustainable production systems such as the Integrated Peach Production (IPP), alternative methods based on Integrated Pest Management (IPM) are commended. The natural enemies preservation is one of the most important practices on IPM, so, the use of pesticides that are selective to the

APA, Harvard, Vancouver, ISO, and other styles

3

Kerns, David L. "Chemical Control and Integrated Pest Management of Woolly Whitefly." College of Agriculture, University of Arizona (Tucson, AZ), 2004. http://hdl.handle.net/10150/198119.

Full text

Abstract:

Five foliar insecticide treatments (Esteem, two rates of Provado, two rates of Applaud, Prev-am, and Danitol + Lorsban) were evaluated for their control of woolly whitefly infestations in grapefruit. All of these products demonstrated efficacy in mitigating woolly whitefly populations. Danitol + Lorsban was the best knock-down treatment evaluated, but for sustained control, Esteem appeared to be most effective. Applaud demonstrated good activity, but the rate we tested may be a little low; the 1.0 lb/ac rate should be evaluated. Provado at 19 oz/ac was a good treatment, while the 10 oz/

APA, Harvard, Vancouver, ISO, and other styles

4

Kerns, David L. "Chemical Control and Integrated Pest Management of Woolly Whitefly." College of Agriculture, University of Arizona (Tucson, AZ), 2007. http://hdl.handle.net/10150/223680.

Full text

Abstract:

Eight foliar insecticide treatment regimes (single applications of Esteem, Danitol + Lorsban, Applaud, Provado and Prev-am, and two applications of Applaud, Provado, and Prev-Am) were evaluated for management of woolly whitefly infestations in grapefruit. All of these products demonstrated efficacy in mitigating woolly whitefly populations. Danitol + Lorsban appeared to be the best knock-down treatment evaluated, but Provado and Prev-Am also demonstrated good activity. For sustained control, all of the treatments were effective; however, Prev-Am required an additional application to achieve eq

APA, Harvard, Vancouver, ISO, and other styles

5

Hick, Alastair James. "Studies on plant secondary metabolites influencing pest behaviour." Thesis, Open University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321296.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Islam, Md Nurul. "Chemical communication in the stored-product pest Callosobruchus chinensis (L.) (Coleoptera: Bruchidae)." Thesis, University of Southampton, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259674.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Linkous, Emily Kathryn. "Integrating biological control and chemical control of cabbage caterpillar pests." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366362436.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Turkel, Ryan. "Development of repressible sterility in Medfly for chemical-free pest control." Thesis, Cardiff University, 2016. http://orca.cf.ac.uk/99253/.

Full text

Abstract:

Medfly (Ceratitis capitata) is an invasive Tephritid fruit fly that severely disrupts global agricultural productivity. Pesticides are the primary control method despite genetic resistance, questionable efficacy, and negative effects upon the environment. The sterile insect technique (SIT) is an ecofriendly alternative, that suppresses the reproduction of wild Medfly by the mass release of sterilised males. Currently, males are sterilised by irradiation, which frequently reduces the ability of males to court females and thereby suppress reproduction. To address these undesirable effects, we de

APA, Harvard, Vancouver, ISO, and other styles

9

Vouyoykalou, E. "Possible non-chemical methods for the management of root-knot nematodes (Meloidogyne spp)." Thesis, University of Reading, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259493.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Grau, Paricio Carlos. "Influence of predator and food chemical cues in the behaviour of the house mouse (Mus musculus)." Thesis, Toulouse, INPT, 2019. http://www.theses.fr/2019INPT0068/document.

Full text

Abstract:

Les rongeurs commensaux sont responsables de grands dommages en agriculture et dans les zones urbaines. En tant qu’espèces invasives, elles peuvent mettre en danger les espèces locales et sont porteurs et vecteurs de plusieurs zoonoses importantes. Les méthodes de contrôle sont basées principalement sur l’utilisation des warfarines, lesquelles produisent un grand nombre d’intoxications sur des espèces non ciblées et ont perdu une partie de leur efficacité à cause des résistances génétiques constatées chez les espèces cibles. De plus, ces méthodes sont considérées comme inhumaines parce qu’elle

APA, Harvard, Vancouver, ISO, and other styles

11

Fernandes, Winnie Cezario. "Thrips on roses: identification, monitoring and chemical control." Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=14048.

Full text

Abstract:

Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>The growth in the production of ornamental plants is increasingly significant in Brazil and in the Northeast region, but the occurrence of pests is shown as a limiting factor. To minimize losses, adequate control measures should be employed. Accordingly, the correct identification of pests, population monitoring and studies on managements should be performed. The objective of this study was to identify thrips species in rose, characterize and quantify the damage loss caused by arthropod pests in the production of roses in Serra d

APA, Harvard, Vancouver, ISO, and other styles

12

Chapman, Jason Wayne. "Investigations into the behaviour of the house fly, Musca domestica L. (Diptera: muscidae), towards chemical and visual stimuli, in relation to control in intensive animal rearing units." Thesis, University of Southampton, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243172.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Malek, Robert Nehme. "Novel Monitoring and Biological Control of Invasive Insect Pests." Doctoral thesis, Università degli studi di Trento, 2020. http://hdl.handle.net/11572/257781.

Full text

Abstract:

Invasive species are alien to the ecosystem under consideration and cause economic or environmental damage or harm to human health. Two alien insects that fit this description are the brown marmorated stink bug, Halyomorpha halys and the spotted lanternfly, Lycorma delicatula. Both invaders are polyphagous pests that feed on a myriad of plant species and inflict severe crop losses. As sustainable control methods depend on the accurate monitoring of species’ invasion and involve the use of natural enemies, we addressed these two facets by exploring novel monitoring techniques and deciphering ho

APA, Harvard, Vancouver, ISO, and other styles

14

Zantedeschi, Ronaldo. "Seletividade de agrotóxicos utilizados na cultura da soja aos parasitoides de ovos Telenomus podisi Ashmead, 1893 e Trissolcus basalis (Wollaston, 1858) (Hymenoptera: Platygastridae)." Universidade Federal de Pelotas, 2017. http://repositorio.ufpel.edu.br:8080/handle/prefix/3723.

Full text

Abstract:

Submitted by Gabriela Lopes (gmachadolopesufpel@gmail.com) on 2017-09-22T14:55:59Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertação Ronaldo Final.pdf: 663021 bytes, checksum: 931877516cbade301f2d242e4f610d7b (MD5)<br>Approved for entry into archive by Aline Batista (alinehb.ufpel@gmail.com) on 2017-09-25T19:42:38Z (GMT) No. of bitstreams: 2 Dissertação Ronaldo Final.pdf: 663021 bytes, checksum: 931877516cbade301f2d242e4f610d7b (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Made available in DSpace on 2017-0

APA, Harvard, Vancouver, ISO, and other styles

15

Malek, Robert Nehme. "Novel Monitoring and Biological Control of Invasive Insect Pests." Doctoral thesis, Università degli studi di Trento, 2020. http://hdl.handle.net/11572/257781.

Full text

Abstract:

Invasive species are alien to the ecosystem under consideration and cause economic or environmental damage or harm to human health. Two alien insects that fit this description are the brown marmorated stink bug, Halyomorpha halys and the spotted lanternfly, Lycorma delicatula. Both invaders are polyphagous pests that feed on a myriad of plant species and inflict severe crop losses. As sustainable control methods depend on the accurate monitoring of species’ invasion and involve the use of natural enemies, we addressed these two facets by exploring novel monitoring techniques and deciphering ho

APA, Harvard, Vancouver, ISO, and other styles

16

Armas, Franciele Silva De. "Seletividade de produtos fitossanitários utilizados na cultura do pessegueiro aos predadores Chrysoperla externa (Hagen, 1861) (Neuroptera: Chrysopidae) e Coleomegilla quadrifasciata (Schöenherr, 1808) (Coleoptera: Coccinellidae)." Universidade Federal de Pelotas, 2017. http://repositorio.ufpel.edu.br:8080/handle/prefix/3724.

Full text

Abstract:

Submitted by Gabriela Lopes (gmachadolopesufpel@gmail.com) on 2017-09-22T16:02:25Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertação Franciele Silva De Armas.pdf: 1223681 bytes, checksum: 9be73b97e5429620ff32bb2796597003 (MD5)<br>Approved for entry into archive by Aline Batista (alinehb.ufpel@gmail.com) on 2017-09-25T19:45:38Z (GMT) No. of bitstreams: 2 Dissertação Franciele Silva De Armas.pdf: 1223681 bytes, checksum: 9be73b97e5429620ff32bb2796597003 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Made avail

APA, Harvard, Vancouver, ISO, and other styles

17

Souza, Natalia Medeiros de [UNESP]. "Gonipterus platensis (Coleoptera: Curculionidae): infestação em eucalipto, aspectos morfológicos e biológicos e controle." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/144401.

Full text

Abstract:

Submitted by NATALIA MEDEIROS DE SOUZA null (natalia_m_souza@hotmail.com) on 2016-10-20T14:13:51Z No. of bitstreams: 1 souza_nm_me_bot.pdf: 1278378 bytes, checksum: 4130fced6999039d704341606723b72b (MD5)<br>Approved for entry into archive by Juliano Benedito Ferreira (julianoferreira@reitoria.unesp.br) on 2016-10-20T19:02:34Z (GMT) No. of bitstreams: 1 souza_nm_me_bot.pdf: 1278378 bytes, checksum: 4130fced6999039d704341606723b72b (MD5)<br>Made available in DSpace on 2016-10-20T19:02:34Z (GMT). No. of bitstreams: 1 souza_nm_me_bot.pdf: 1278378 bytes, checksum: 4130fced6999039d704341606723b7

APA, Harvard, Vancouver, ISO, and other styles

18

Aitken, Lynette Gail. "The Social Constructions of Integrated Pest Management." Thesis, Griffith University, 1999. http://hdl.handle.net/10072/365912.

Full text

Abstract:

Integrated pest management (IPM) is a multi-layered approach to reducing pest pressure, primarily in agriculture, but also in national parks and urban settings. Its purpose is to maintain acceptable levels of productivity whilst avoiding the adverse effects associated with indiscriminate chemical control, such as pesticide resistance, secondary infestation, resurgence and harm to human health and the environment. It is a complex system, science-driven and information-based, and there are a wide range of actors involved in its development and implementation. These actors occupy various social l

APA, Harvard, Vancouver, ISO, and other styles

19

Arruda, Josicléa Hüffner. "Ação de agroquímicos no controle de mofo branco em soja." Universidade Tecnológica Federal do Paraná, 2014. http://repositorio.utfpr.edu.br/jspui/handle/1/759.

Full text

Abstract:

A soja é uma das principais commodities produzidas no mundo. Entretanto, tem sua produtividade reduzida, significativamente, devido às doenças, dentre estas o mofo branco, causado pelo fungo Sclerotinia sclerotiorum, com expressiva severidade em regiões de clima ameno e úmido. O controle da doença, incluindo o uso de fungicidas, é pouco eficiente. Assim, o trabalho teve por objetivo avaliar a eficiência de herbicidas e adubos foliares à base de fosfito de potássio no manejo do mofo branco em soja, bem como a ação dos produtos, indução da síntese de fitoalexinas e das enzimas peroxidases e sup

APA, Harvard, Vancouver, ISO, and other styles

20

Pasini, Rafael Antonio. "Seletividade de agrotóxicos utilizados na cultura do trigo aos predadores Chrysoperla externa (Hagen, 1861) (Neuroptera: Chrysopidae) e Eriopis connexa (Germar,1824) (Coleoptera: Coccinellidae) em condições de laboratório e semi-campo." Universidade Federal de Pelotas, 2017. http://repositorio.ufpel.edu.br:8080/handle/prefix/3669.

Full text

Abstract:

Submitted by Gabriela Lopes (gmachadolopesufpel@gmail.com) on 2017-07-11T16:32:21Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Tese Rafael Antonio Pasini.pdf: 2553408 bytes, checksum: 6b56b5a30a27d4c38a90cbaee22f20f3 (MD5)<br>Approved for entry into archive by Aline Batista (alinehb.ufpel@gmail.com) on 2017-07-17T20:26:26Z (GMT) No. of bitstreams: 2 Tese Rafael Antonio Pasini.pdf: 2553408 bytes, checksum: 6b56b5a30a27d4c38a90cbaee22f20f3 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Made available in DSpace on 20

APA, Harvard, Vancouver, ISO, and other styles

21

Cormier, Daniel. "Seasonal and chemical ecology of Anaphes listronoti and A. victus (Hymenoptera:Mymaridae), egg parasitoids of the carrot weevil, Listronotus oregonensis (Coleoptera:Curculionidae), in central Ontario." Thesis, McGill University, 1998. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34935.

Full text

Abstract:

The carrot weevil, Listronotus oregonensis (LeConte) (Coleoptera: Curculionidae), is an insect pest in carrot production in Ontario. The aim of this study was to survey the egg parasitoids attacking the carrot weevil in carrot fields in Ontario, and elucidate the seasonal and chemical ecology of these natural enemies.<br>Field surveys were conducted during three years in commercial carrot fields in the Holland Marsh and district marshes to detect the presence of carrot weevil egg parasitoids, to determine their geographical distribution and to evaluate the effect of insecticides on the rate of

APA, Harvard, Vancouver, ISO, and other styles

22

Prado, Evandro Pereira [UNESP]. "Assistência de ar em pulverização no manejo fitossanitário na cultura da soja Glycine max (L.) Merrill." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/97152.

Full text

Abstract:

Made available in DSpace on 2014-06-11T19:28:36Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-02-13Bitstream added on 2014-06-13T19:58:10Z : No. of bitstreams: 1 prado_ep_me_botfca.pdf: 1292692 bytes, checksum: dbf83a5af75afb9c9d97bbadfe81fa2b (MD5)<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)<br>Com o intuito de melhorar a eficiência de controle da ferrugem asiática Phakopsora pachyrhizi e insetos-pragas na cultura da soja, o presente trabalho avaliou diferentes técnicas de pulverização sobre o depósito da calda. Cinco experimentos foram conduzidos na áre

APA, Harvard, Vancouver, ISO, and other styles

23

Faion, Melissa. "Toxicidade de agrotóxicos utilizados no controle de Bemisia tabaci biótipo B, sobre fungos entomopatogênicos." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-02052005-140047/.

Full text

Abstract:

Determinou-se a toxicidade de dezoito formulações de agrotóxicos utilizados no controle de Bemisia tabaci (Hemiptera: Aleyrodidae) biótipo B na cultura do tomate, sobre os fungos entomopatogênicos Beauveria bassiana (ESALQ 447) Metarhizium anisopliae (ESALQ E9). Para isso, avaliou-se o crescimento vegetativo, esporulação e germinação dos patógenos submetidos a ação das formulações, sugerindo-se uma alteração na expressão matemática para classificação da toxicidade de agrotóxicos. Subdoses (de 5,0 a 1,25 mL/ L) do produto Oberon 240 SC (spiromesifen) foram testadas sobre ninfas de 3º ínstar de

APA, Harvard, Vancouver, ISO, and other styles

24

Prado, Evandro Pereira 1981. "Assistência de ar em pulverização no manejo fitossanitário na cultura da soja Glycine max (L.) Merrill /." Botucatu : [s.n.], 2009. http://hdl.handle.net/11449/97152.

Full text

Abstract:

Orientador: Carlos Gilberto Raetano<br>Banca: Wilson Badiali Crocomo<br>Banca: Geraldo Papa<br>Resumo: Com o intuito de melhorar a eficiência de controle da ferrugem asiática Phakopsora pachyrhizi e insetos-pragas na cultura da soja, o presente trabalho avaliou diferentes técnicas de pulverização sobre o depósito da calda. Cinco experimentos foram conduzidos na área experimental da FCA/UNESP - Campus de Botucatu, na cultura da soja (var. Conquista), dois na safra 2006/07 e três na safra 2007/08. Os experimentos 1 e 2 foram conduzidos no delineamento em blocos ao acaso no esquema fatorial 2x2+1

APA, Harvard, Vancouver, ISO, and other styles

25

Rasera, Riccardo. "Mais e micotossine: possibilità di controllo." Doctoral thesis, Università degli studi di Padova, 2010. http://hdl.handle.net/11577/3426994.

Full text

Abstract:

Cereal mycotoxin contamination is a worldwide serious problem for human and animal health. Maize products could be contaminated by different kind of mycotoxins. The most important are deoxynivalenol (DON), zearalenone (ZEN), aflatoxins (AF), ocratoxin (OCRA) and fumonisins (FUM) produced by fungi belonging to different genera Fusarium, Aspergillus and Penicillium. In northern Italy, but also in other world regions, the most frequently occurring class of mycotoxins in maize are fumonisins. These mycotoxins can be present even at concentrations that make maize grain inadvisable for human consump

APA, Harvard, Vancouver, ISO, and other styles

26

Dodson, Bonny Lynn. "Aspects of chemical control of the old house borer, Hylotrupes bajulus (L.) (Coleoptera: Cerambycidae)." Thesis, This resource online, 1987. http://scholar.lib.vt.edu/theses/available/etd-11072008-063045/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Goulart, Henrique Fonseca. "Identificação, síntese e formulação de feromônios para o controle de pragas." Universidade Federal de Alagoas, 2012. http://www.repositorio.ufal.br/handle/riufal/3503.

Full text

Abstract:

The pheromones are elegant and safe tool for controlling insects and it is possible to control their populations through the manipulation of communication between them, without adversely affecting other beneficial organisms. Pheromones may be involved in various behavioral activities such as food foraging, reproduction, the warning signal in the presence of predators and as chemical defense substances. Hundreds of pheromones and semiochemicals are known and useful for monitoring the presence and abundance of insects and to protect plants against insects and animals. In Brazil, almost all of th

APA, Harvard, Vancouver, ISO, and other styles

28

Meurisse, Nicolas. "Chemical ecology of rhizophagus grandis (Coleoptera: Monotomidae) and its application to the biological control of dendroctonus micans (Coleoptera: Scolytinae)." Doctoral thesis, Universite Libre de Bruxelles, 2008. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210567.

Full text

Abstract:

The Eurasian spruce bark beetle Dendroctonus micans is a major pest of spruce which is expanding its range in France, Turkey, England and Wales. Its monospecific predator Rhizophagus grandis has followed naturally the bark beetle into most areas and, since the 1960s, has also been mass-produced and successfully released within newly infested locations. <p>In this scope, the development of an effective trapping method would be very useful to assess the bark-beetle presence at previously uninfested sites, or predator establishment after release or natural spread. We demonstrated the efficiency o

APA, Harvard, Vancouver, ISO, and other styles

29

Visentin, Ana Paula Vargas. "Efeitos de novaluron, glifosato e Metarhizium rileyi sobre o sistema imune, parâmetros biológicos e metabolismo redox de Anticarsia gemmatalis." reponame:Repositório Institucional da UCS, 2017. https://repositorio.ucs.br/11338/4063.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Khalghani, Jafar. "The interaction of host plant resistance to cereal aphids with biological and chemical control methods with respect to integrated pest management : field and laboratory studies." Thesis, University of Newcastle Upon Tyne, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240855.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Silva, Clóvis Lúcio da. "Desenvolvimento de estratégias de pré-concentração para eletroforese capilar (CE) visando a análise de pesticidas em frutas e leguminosas." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/46/46133/tde-04052015-184210/.

Full text

Abstract:

O uso de pesticidas constitui um importante aspecto na agricultura moderna, com inquestionável beneficio na produção agrícola. Porém a contaminação dos alimentos por pesticidas constitui um sério risco a saúde do consumidor. A determinação de resíduo de pesticidas em alimentos envolve procedimentos laboriosos, com elevado tempo de análise e várias etapas de pré-concentração. Neste trabalho, procedimentos alternativos de extração e pré-concentração para analise multiresíduo de pesticida em água, frutas e tubérculos foram desenvolvidos. A eletroforese capilar em seu modo MEKC em condições de alt

APA, Harvard, Vancouver, ISO, and other styles

32

Cattaneo, Alberto Maria. "Unveiling sensory mechanisms for the control of two insect pests: from behaviour to molecular interactions." Doctoral thesis, country:IT, 2015. http://hdl.handle.net/10449/29924.

Full text

Abstract:

Pest control strategies targeting insect olfaction represent a promising venue for control of tortricid insects (Lepidoptera: Tortricidae). Among tortricids, the grapevine moth Lobesia botrana (Denis and Schiffermüller) and the codling moth Cydia pomonella (L.) are serious pests for worldwide production of fruit crops. We employed several approaches to the olfactory system, from electrophysiological and behavioral studies in the grapevine moth, to bioinformatic and molecular studies of olfactory sensory proteins in the codling moth. At the receptor level, we studied both the Olfactory Receptor

APA, Harvard, Vancouver, ISO, and other styles

33

Cattaneo, A. M. "UNVEILING SENSORY MECHANISMS FOR THE CONTROL OF TWO INSECT PESTS: FROM BEHAVIOR TO MOLECULAR INTERACTIONS." Doctoral thesis, Università degli Studi di Milano, 2015. http://hdl.handle.net/2434/347230.

Full text

Abstract:

Pest control strategies targeting insect olfaction represent a promising venue for control of tortricid insects (Lepidoptera: Tortricidae). Among tortricids, the grapevine moth Lobesia botrana (Denis and Schiffermüller) and the codling moth Cydia pomonella (L.) are serious pests for worldwide production of fruit crops. We employed several approaches to the olfactory system, from electrophysiological and behavioral studies in the grapevine moth, to bioinformatic and molecular studies of olfactory sensory proteins in the codling moth. At the receptor level, we studied both the Olfactory Receptor

APA, Harvard, Vancouver, ISO, and other styles

34

Possebon, Sandro Borba. "Desempenho de uma semeadora-adubadora e métodos de aplicação de inseticidas no sulco em plantio direto." Universidade Federal de Santa Maria, 2011. http://repositorio.ufsm.br/handle/1/3592.

Full text

Abstract:

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>No-tillage was only possible with the development of machines to work on specific seeding soils with straw on the surface, equipped with a plow blade and to facilitate the deposition of seed in the soil depths in uniform and with reduced tillage in furrow, in conditions conducive to germination / seedling emergence and root growth good for the crop. However, with the expansion of no-tillage and increasing crop areas, some of subterranean insects that spend at least one phase of its life cycle within the soil as larvae and Ste

APA, Harvard, Vancouver, ISO, and other styles

35

Okosun, Olabimpe Olayem. "Chemical ecology and eco-physiology of the grain chinch bug, Macchiademus diplopterus (Distant) (Hemiptera: Lygaeidae: Blissidae), a phytosanitary pest of South African export fruit." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/20046.

Full text

Abstract:

Thesis (MScAgric)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: The grain chinch bug, Macchiademus diplopterus, is an endemic pest of cultivated grain crops and wild grasses in the south-western Cape region of South Africa. In early summer when host plants dry out, adult grain chinch bugs aggregate in large numbers in shelter sites in surrounding areas and enter into aestivation. These shelter sites sometimes include the stalk or calyx ends of fruit, and shelter-seeking bugs can also contaminate export fruit cartons, consequently posing a phytosanitary/quarantine risk to importing count

APA, Harvard, Vancouver, ISO, and other styles

36

Fürstenau, Benjamin. "Comunicación química intraespecífica de Coroebus spp. (Coleoptera: Buprestidae) y Dociostaurus maroccanus (Orthoptera: Acrididae), dos insectos plaga de la Península Ibérica." Doctoral thesis, Universitat de Barcelona, 2011. http://hdl.handle.net/10803/31938.

Full text

Abstract:

The Chemical Ecology of four insect pests was investigated in this work. Eavesdropping of their intraspecific communication by means of pheromones or other volatile organic compounds provide important details that could be used to control them in a environmentally-friendly way. With the aim to find possible pheromones of three pest species of the Iberian Peninsula, analytical studies of the emitted volatiles were accomplished. In behavioral and electrophysiological bioassays the activity of the identified compounds was determined, and additionally, field trapping experiments were initiated.

APA, Harvard, Vancouver, ISO, and other styles

37

Webber, J. D. "Phenology of hazelnut big bud mites in Canterbury and implications for management." Lincoln University, 2007. http://hdl.handle.net/10182/342.

Full text

Abstract:

Eriophyoid big bud mites are key pests of hazelnuts throughout the world, although little is known of the identity and impact of the species on New Zealand hazelnut crops. The key objectives of this study were to determine the species of mite present on New Zealand crops, explore a method of monitoring mite emergence from overwintering big buds, determine the phenology of mites in relation to tree phenology and weather, and identify the optimum timing for control measures. The presence of both Phytoptus avellanae (Nalepa 1889) (Acari: Phytoptidae) and Cecidophyopsis vermiformis (Nalepa 1889) (

APA, Harvard, Vancouver, ISO, and other styles

38

Nilsson, Anna. "Optimering av den kemiska reningen vid Fläskebo deponi." Thesis, Uppsala University, Department of Earth Sciences, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-88841.

Full text

Abstract:

<p>Landfill leachate contains a variety of contaminants and is created when rainwater percolates the landfill. For landfill management the leachate is the main issue that can cause problems to the environment. At the landfill of Fläskebo, Renova AB treats the leachate in a local treatment plant. The treatment consists of a chemical treatment step with chemical precipitation, flocculation, sedimentation and filtration, and a final step with a carbon and peat filter. Renova has to ensure that the condition of the leachate reaches the regulation set for the landfill before it is released to the r

APA, Harvard, Vancouver, ISO, and other styles

39

Roux, Olivier. "Système de reconnaissance hôte-parasitoïde et différenciation de populations au sein de l'interaction spécifique Plutella xylostella (Lepidoptera, Plutellidae) et Cotesia plutellae (Hymenoptera, braconidae)." Toulouse 3, 2006. http://www.theses.fr/2006TOU30100.

Full text

Abstract:

La culture de Brassicacées est une des productions agricoles les plus importantes au monde. L'un de ses principaux ravageurs est la Teigne des crucifères, Plutella xylostella (Linné, 1758) (Lepidoptera, Plutellidae) dont les chenilles attaquent les feuilles et peuvent causer jusqu'à 90% de perte de production. La lutte contre la teigne est rendue difficile par le développement de résistances envers la quasi-totalité des insecticides existants. Afin de répondre en partie à ce problème, de nombreux moyens de lutte alternatifs ont été mis en place, impliquant principalement des insectes parasitoï

APA, Harvard, Vancouver, ISO, and other styles

40

FREISSINET, CATHERINE. "Estimation des imprécisions dans la modélisation du devenir des produits phytosanitaires dans les sols : une méthode fondée sur la logique floue." Université Joseph Fourier (Grenoble), 1997. http://www.theses.fr/1997GRE10068.

Full text

Abstract:

Le travail presente dans ce memoire a pour principal objectif d'etablir une methodologie permettant d'evaluer les imprecisions sur les resultats de modelisation et de l'appliquer a l'estimation de la vulnerabilite de la ressource en eau face a des pollutions diffuses d'origine agricole. Dans une premiere partie, nous presentons les principaux phenomenes physiques lies au devenir des produits phytosanitaires dans les sols (transport, retention, transformation, volatilisation, reprise par les plantes. . . ) et nous ne manquerons pas de rappeler les differentes imprecisions concernant les caracte

APA, Harvard, Vancouver, ISO, and other styles

41

Moyal, Pascal. "Les foreurs du maïs en zone des savanes de Côte d'Ivoire : données morphologiques, biologiques, écologiques : essais de lutte et relation plante-insecte." Paris 6, 1986. http://www.theses.fr/1986PA066488.

Full text

Abstract:

Le maïs cultivé en zones de savanes de Côte d'Ivoire est attaqué par 5 espèces de Lépidoptères foreurs qui s'attaquent soit a la tige, soit a l'épi, soit aux deux. Étude de la chétotaxie larvaire des différents foreurs, de l'habitus des stades préimaginaux, de la morphologie et de la biologie de Mussidia nigrivenella. Résultats de l'étude des fluctuations des populations de ces foreurs. Mise en évidence de l'efficacité de la deltaméthrine en concentré émulsifiable a 15 grammes de matière active à l'hectare. Iimpact des divers insectes sur le rendement et calcul d'équations de régression relian

APA, Harvard, Vancouver, ISO, and other styles

42

Edmonds, Gareth John. "Investigating induced resistance in sugarcane." Thesis, 2013. http://hdl.handle.net/10413/11423.

Full text

Abstract:

Five potential resistance-inducing chemicals were applied to two sugarcane varieties (N12 and N27) in a pot trial with the aim of inducing resistance to nematodes in naturally-infested soil. BION® (acibenzolar-S-methyl), methyl jasmonate, cis-jasmone and 2,6-dichloroisonicotinic acid (INA) were applied as a foliar spray and suSCon® maxi (imidacloprid) applied to the soil. All chemicals were tested at two rates and plants were sprayed one week prior to being harvested at 7, 9 and 11 weeks of age. Meloidogyne and Pratylenchus infestation of sett and shoot roots was determined at each harvest. Th

APA, Harvard, Vancouver, ISO, and other styles

43

Chan, Kai-Chun, and 詹凱竣. "Non-chemical Pesticide Control Pest in Sphagnum Moss Medium of Phalaenopsis Seedlings for Export." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/gfq984.

Full text

Abstract:

碩士<br>國立中興大學<br>園藝學系所<br>106<br>In this study, food-grade cinnamon oil and sucrose esters of food additives are used as non-chemical pestcides to control living pests in the sphagnum moss of Phalaenopsis seedlings. We hope to establish a safe, pollution-free and insecticidal method of non-chemical pestcides to improve the pass rate of quarantine. Phalaenopsis seedlings treated with 0.1% cinnamon oil for 5 minutes could completely kill living pests and the phytotoxicity index is 4.00. After treated with 0.07% cinnamon oil for 3 minutes, the living pests were completely killed by treated with th

APA, Harvard, Vancouver, ISO, and other styles

44

Conway, Michael S. "Chemical and environmental factors affecting pesticide volatilization from turfgrass." Thesis, 2002. http://hdl.handle.net/1957/32153.

Full text

Abstract:

Volatile loss rates of pesticides from turfgrass were measured using the Backward-Time Lagrangian Stochastic Dispersion model (Flesch et al., 1995). Solar radiation, ambient temperature, surface temperature, relative humidity, wind direction, and wind speed were monitored continuously. Growth regulator was applied to the turf plot several days before pesticide application to maintain a constant grass height and aerodynamic roughness length during the experiment. No irrigation occurred following application. Pesticides were applied as mixtures to allow direct comparison of evaporative loss. Mix

APA, Harvard, Vancouver, ISO, and other styles

45

Fernando, W. Gerard Dilantha. "Biology, epidemiology, and biological and chemical control of Phytophthora vignae." Thesis, 1990. http://hdl.handle.net/1957/37166.

Full text

Abstract:

Phytophthora vignae, causal agent of stem and root rot of cowpea (Vigna unguiculata), was reported for the first time in Sri Lanka. The pathogen was found in cowpea field soils from 3 of 5 geographic regions sampled. Only one site however, had plants exhibiting disease symptoms. Of the eight cowpea varieties grown in Sri Lanka, four were shown to be relatively resistant; all other legumes inoculated were completely resistant. Two morphologic and physiologic races of P. vignae were identified among the 24 isolates recovered, based on differential pathogenicity on cowpea varieties. Bacteria isol

APA, Harvard, Vancouver, ISO, and other styles

46

Du, Preez Eve Diane. "Chemical control of soybean rust (Phakopsora pachyrhizi) on soybeans." Thesis, 2005. http://hdl.handle.net/10413/4073.

Full text

Abstract:

Soybean rust (SBR) caused by Phakopsora pachyrhizi Syd. is an aggressive wind dispersed fungal disease which has spread around the world at an alarming rate in the last decade. The disease was first reported in South Africa (SA) in 2001. It has become well established in the province of KwaZulu-Natal. Reports are occasionally made from eastern Mpumalanga, late in the growing season, in years with good rainfall. Yield losses of 10 - 80% have been reported due to SBR infection. Literature was reviewed to better understand the pathogen in an attempt to find suitable disease management strategies.

APA, Harvard, Vancouver, ISO, and other styles

47

Mosupi, P. O. P. (Pharoah Olifant Pedro). "Chemical and cultural control of armoured bush cricket, Acanthoplus discoidalis (Walker) (Orthoptera: Tettigoniidae: Hetrodinae), in sorghum in Botswana." Thesis, 2003. http://hdl.handle.net/2263/29424.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Bopape, Malesela Jonas. "The management of diamondback moth, Plutella xylostella (Linnaeus) (Lepidoptera: Plutellidae), population density on cabbage using chemical and biological control methods." Diss., 2013. http://hdl.handle.net/10500/13605.

Full text

Abstract:

The diamondback moth, Plutella xylostella (Linnaeus) (Lepidoptera: Plutellidae), is a cosmopolitan insect pest of Brassica crops. In South Africa, there are no action thresholds for its chemical control which makes it difficult for growers to make informed decisions on when to apply insecticides and how frequently to apply them in order to achieve optimal crop yield. To contribute towards optimum application of insecticides against P. xylostella, this study compared the impact of weekly and bi-weekly applications of a selective insecticide Dipel® (Bacillus thuringiensis Berliner var. kur

APA, Harvard, Vancouver, ISO, and other styles

49

Mah, Poh Mun. "Cost of controlled (or failing to control) insects in stored grain a comparison of chemical-based and integrated pest management strategies /." 2004. http://digital.library.okstate.edu/etd/umi-okstate-1201.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Maas, Bea. "Birds, bats and arthropods in tropical agroforestry landscapes: Functional diversity, multitrophic interactions and crop yield." Doctoral thesis, 2013. http://hdl.handle.net/11858/00-1735-0000-0022-5E77-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!