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Dissertations / Theses on the topic 'Biological control'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 July 2025

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1

Jenkins, Tim A. "Fungal biological control of Hieracium." Thesis, University of Canterbury. Microbiology, 1995. http://hdl.handle.net/10092/4841.

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Hieracium species are a severe weed problem in the high country native tussock grasslands of New Zealand. This thesis reports on the potential for fungal biological control of Hieracium, in particular with a rust pathogen, Puccinia hieracii var. piloselloidarum. Isolates of Hieracium rust were collected from throughout Northern, Central and Southern Europe, and the British Isles. One thousand four hundred and twenty four isolates were screened on New Zealand Hieracium pilosella to identify the most infective strains for potential use as biological control agents. The rust isolates most pathoge

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2

Koomen, Irene. "Biological control of Colletotrichum gloeosporioides." Thesis, University of Kent, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278551.

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Colletotrichum gloeosporioides is the causal agent of anthracnose disease of mangoes. Infection occurs when humidity is high and rain-dispersed spores germinate and form an appressorium on immature mangoes. The infection then becomes quiescent until the fruit is harvested. On ripe fruit infection is visible as black, sunken lesions on the surface. At the pre-harvest stage, the disease is controlled with the application of a range of fungicides, and at the post-harvest stage by hot benomyl treatment. The extensive use of benomyl, both pre- and post-harvest, has resulted in the occurrence of iso

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3

Mutinda, Irene. "Biological control of mignonette weeds." Thesis, University of Reading, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266625.

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4

Sano, Michael Benjamin. "Electromagnetic Control of Biological Assembly." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/76975.

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We have developed a new biofabrication process in which the precise control of bacterial motion is used to fabricate customizable networks of cellulose nanofibrils. This work describes how the motion of Acetobacter xylinum can be controlled by electric fields while the bacteria simultaneously produce nanocellulose, resulting in networks with aligned fibers. Since the electrolysis of water due to the application of electric fields produces the oxygen in the culture media far from the liquid-air boundary, aerobic cellulose production in 3D structures is readily achievable. Five separate sets of

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5

Garcia, André Filipe Fidalgo Casquilho. "Enhancing biological control against Eucalyptus pests." Doctoral thesis, ISA, 2020. http://hdl.handle.net/10400.5/21212.

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6

Lordan, Sanahuja Jaume. "Enhancing biological control in apple orchards." Doctoral thesis, Universitat de Lleida, 2014. http://hdl.handle.net/10803/275941.

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La tisoreta comuna Forficula auricularia Linnaeus i Forficula pubescens Gené (Dermaptera : Forficulidae ) poden tenir un paper decisiu com a depredadors. Es va observar compatibilitat entre la tisoreta i nematodes entomopatògens (NEPs) i una activitat dissuassòria en larves de carpocapsa Cydia pomonella L. (Lepidoptera: Tortricidae) mortes per NEPs, reduint l’alimentació de la tisoreta sobre cadàvers que contenien nematodes al seu interior. La presència de tisoretes i aranyes (Araneae) es va observar all llarg de tot l’any, però tan sols les tisoretes van contribuir a reduir les infestacions d

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7

Li, Weiwei. "Optimal control for biological movement systems." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2006. http://wwwlib.umi.com/cr/ucsd/fullcit?p3205051.

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Thesis (Ph. D.)--University of California, San Diego, 2006.<br>Title from first page of PDF file (viewed April 4, 2006). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 131-146).

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8

Brenner, Sibylle. "Mechanistic Control of Biological Redox Systems." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.518447.

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9

Mpofu, Bellah. "Biological control of waterhyacinth in Zimbabwe." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40203.

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In a survey conducted in Zimbabwe in 1993, waterhyacinth was present in seven out of the eight provinces. No control measures were imposed on 35% of the infested dams and 61% of the infested rivers, while in 47% of the infested dams and 11% of the infested rivers control of waterhyacinth was being attempted with a combination of 2,4-D and mechanical control methods. The population of Neochetina eichhorniae and N. bruchi declined during the period 1993 to 1995 in the Hunyani River system. Several fungi were isolated from diseased waterhyacinth, and Fusarium moniliforme (isolate 2ex 12), F. sola

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10

Hartfield, Christopher Mark. "Biological control of aphids on plum." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287493.

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11

Pamphilon, Lindsay Victoria. "The biological control of Myzus cerasi." Thesis, University of Greenwich, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325268.

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12

Rackauckas, Christopher Vincent. "Simulation and Control of Biological Stochasticity." Thesis, University of California, Irvine, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10827971.

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<p> Stochastic models of biochemical interactions elucidate essential properties of the network which are not accessible to deterministic modeling. In this thesis it is described how a network motif, the proportional-reversibility interaction with active intermediate states, gives rise to the ability for the variance of biochemical signals to be controlled without changing the mean, a property designated as mean-independent noise control (MINC). This noise control is demonstrated to be essential for macro-scale biological processes via spatial models of the zebrafish hindbrain boundary sharpen

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13

Safronova, D. "Biological method for water quality control." Thesis, Видавництво СумДУ, 2012. http://essuir.sumdu.edu.ua/handle/123456789/26726.

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Problem Saint-Petersburg is located at the Neva river and almost all drinking water for 5 million inhabitants is taken from it. Talking about water supply centralised source for Saint-Petersburg, one can mark a lot of negative factors influencing the water quality. Surely, agricultural pollution, transport and economical problems are among them. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/26726

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14

Barclay, Cameron G. "The biological control of cervical ripening." Thesis, University of Edinburgh, 1995. http://hdl.handle.net/1842/20597.

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A cell culture system was developed to study the production of prostaglandins by cervical cells from late pregnant guinea pigs. This permitted the examination of the influence of various substances on the synthesis of the prostaglandins, including progesterone and the anti-progesterone drug RU486 (Mifepristone/RU38486). RU486 has been found to promote cervical ripening in humans and guinea pigs. It is thought to increase the sensitivity of the uterus to prostaglandins and thereby promote muscle activity. It is licensed in the United Kingdom as an abortifacient. Since this antiprogestin can pro

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15

CINQUERRUI, ALESSANDRO. "Sustainable approaches to control Calonectria diseases in ornamental nursery." Doctoral thesis, Università degli studi di Catania, 2015. http://hdl.handle.net/20.500.11769/490912.

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Le specie appartenenti al genere Calonectria sono importanti patogeni delle piante ornamentali. La lotta chimica per il controllo delle malattie causate da tali patogeni è necessaria, ma allo stato attuale è importante ricercare strategie di controllo alternative alla lotta chimica, che consentano di rispettare le recenti normative europee sull’uso sostenibile dei pesticidi (Dir. 2009/128/EC). Diversi esperimenti sono stati messi in atto per la messa a punto di programmi di lotta integrata (IPM) che consentano un efficace contenimento delle infezioni in vivaio, quali macchie fogliari, marciumi

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16

Colmenarez, Yelitza Coromoto [UNESP]. "Virulência de Thyrinteina arnobia virus (TaV) e de Bacillus thuringiensis à Thyrinteina arnobia (Lepidoptera: Geometridae): efeito da temperatura no desenvolvimento das lagartas e do pH da calda de pulverização." Universidade Estadual Paulista (UNESP), 2003. http://hdl.handle.net/11449/97243.

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Made available in DSpace on 2014-06-11T19:28:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2003-02Bitstream added on 2014-06-13T18:35:06Z : No. of bitstreams: 1 colmenarez_yc_me_botfca.pdf: 214314 bytes, checksum: 6e85d2098f54ae999a6fd76ac5157948 (MD5)<br>Este estudo teve por objetivo avaliar a eficiência do Thyrinteina arnobia vírus (TaV) e de Bacillus thuringiensis quando submetidos a diferentes condições de pH e temperatura no controle da lagarta parda Thyrinteina arnobia (Stoll, 1782) (Lepidoptera: Geometridae). Foram testadas 4 temperaturas (18, 22, 26 e 30º C) e 4 pHs diferentes

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17

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.

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18

Irby, Nate. "Discolorations in Southern hardwood logs biological and non-biological staining control practices /." Master's thesis, Mississippi State : Mississippi State University, 2008. http://library.msstate.edu/etd/show.asp?etd=etd-03182008-103654.

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19

Fabrini, Giulia. "Numerical methods for optimal control problems with biological applications." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066096/document.

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Cette thèse se développe sur deux fronts: nous nous concentrons sur les méthodes numériques des problèmes de contrôle optimal, en particulier sur le Principe de la Programmation Dynamique et sur le Model Predictive Control (MPC) et nous présentons des applications de techniques de contrôle en biologie. Dans la première partie, nous considérons l'approximation d'un problème de contrôle optimal avec horizon infini, qui combine une première étape, basée sur MPC permettant d'obtenir rapidement une bonne approximation de la trajectoire optimal, et une seconde étape, dans la quelle l¿équation de Bel

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20

Lutz, Matthias Peter. "Towards the biological control of mycotoxigenic fungi /." [Zürich], 2004. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=15738.

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21

Molta, N. B. "Biological control of mosquitoes with rhabditoid nematodes." Thesis, Imperial College London, 1986. http://hdl.handle.net/10044/1/8901.

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22

Cheah, Carole A. S. J. "Biological control of the chrysanthemum leaf-miner." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254067.

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23

Rutherford, Michael Andrew. "Biological control of Rhizoctonia solani on potatoes." Thesis, Queen's University Belfast, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336000.

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24

Clarkson, John Paul. "Biological control of eyespot disease of cereals." Thesis, University of Nottingham, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336191.

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25

Swadling, Iain. "Biological control of Botrytis cinerea in strawberries." Thesis, University of Kent, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240120.

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26

Paterson, Iain Douglas. "Biological control of Pereskia aculeata Miller (Cactaceae)." Thesis, Rhodes University, 2011. http://hdl.handle.net/10962/d1007653.

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Pereskia aculeata Miller (Cactaceae) is an environmental weed that is damaging to natural ecosystems in South Africa. The plant is native to Central and South America and was first recorded in South Africa in a botanical garden in 1858. In this thesis, research into the biological control of P. aculeata was conducted with the intention of improving the control of the weed. A pre-release study of the relationship between P. aculeata density and native plant biodiversity indicated that P. aculeata has a negative impact on native biodiversity. The native plant biodiversity associated with differe

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27

Cowman, Tyler. "Compression and Version Control of Biological Networks." Case Western Reserve University School of Graduate Studies / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case160701146645758.

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28

Rodrigues, Camila Alves [UNESP]. "Eficiência de predação de Chrysoperla externa (Hagen, 1861) (Neuroptera: Chrysopidae) sobre o tripes do amendoim Enneothrips flavens (Moulton, 1941) (Thysanoptera: Thripidae)." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/91351.

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Made available in DSpace on 2014-06-11T19:25:18Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-02-26Bitstream added on 2014-06-13T20:13:34Z : No. of bitstreams: 1 rodrigues_ca_me_jabo.pdf: 273761 bytes, checksum: 551bde4fc7f49c934781cda9ae5e5305 (MD5)<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Este estudo teve como objetivo verificar o potencial de predação de E. flavens através da liberação de ovos embrionados e larvas de primeiro ínstar de C. externa em plantas de amendoim cultiva

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29

Garcia, Luiz Cláudio [UNESP]. "Interferência da pressurização da calda de pulverização sobre microrganismos entomopatogênicos." Universidade Estadual Paulista (UNESP), 2003. http://hdl.handle.net/11449/97205.

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Made available in DSpace on 2014-06-11T19:28:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2003-06Bitstream added on 2014-06-13T19:37:29Z : No. of bitstreams: 1 garcia_lc_me_botfca.pdf: 627408 bytes, checksum: 6e8090157ad35eb0a16ecfae89cd91f4 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>A tecnologia de aplicação desenvolvida para produtos químicos têm sido utilizada para organismos entomopatogênicos sem o estudo prévio das necessidades de adaptações que visem a manutenção da viabilidade desses agentes de controle biológico. O experimento teve por objetivo

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Colmenarez, Yelitza Coromoto 1974. "Virulência de Thyrinteina arnobia virus (TaV) e de Bacillus thuringiensis à Thyrinteina arnobia (Lepidoptera: Geometridae) : efeito da temperatura no desenvolvimento das lagartas e do pH da calda de pulverização /." Botucatu : [s.n.], 2003. http://hdl.handle.net/11449/97243.

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Orientador: Carlos Frederico Wilcken<br>Resumo: Este estudo teve por objetivo avaliar a eficiência do Thyrinteina arnobia vírus (TaV) e de Bacillus thuringiensis quando submetidos a diferentes condições de pH e temperatura no controle da lagarta parda Thyrinteina arnobia (Stoll, 1782) (Lepidoptera: Geometridae). Foram testadas 4 temperaturas (18, 22, 26 e 30º C) e 4 pHs diferentes (5, 6, 7 e 8). Os ovos de Thyrinteina arnobia foram provenientes de uma criação em dieta artificial, mantida em laboratório. Os entomopatógenos foram aplicados em folhas de Eucalyptus grandis, para posterior oferecim

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31

Dieterich, Mabin Molly E. "Effects of conservation biological control practices on predatory arthropod assemblages and molecular identification of cucumber beetle biological control agents." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1492531428052099.

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32

Zhang, Wenming. "Biological control of Echinochloa species with pathogenic fungi." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40293.

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Six pathogenic fungal species were isolated from naturally-infected Echinochloa species and evaluated as biological control agents for E. crus-galli, E. colona, and E. glabrescens in rice. Bipolaris sacchari, Curvularia geniculata, and Exserohilum monoceras were non-pathogenic to rice and caused high mortality of Echinochloa species. E. monoceras was selected for further study. Under regulated greenhouse conditions, an inoculum dose of 2.5 $ times$ 10$ sp7$ conidia/m$ sp2$ killed E. crus-galli and E. glabrescens seedlings while 5.0 $ times$ 10$ sp7$ conidia/m$ sp2$ caused 100% mortality of E.

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Muniz, Elen Regozino. "Termotolerância de Metarhizium spp. e efeito de sua formulação sobre a virulência para Rhipicephalus microplus expostos à condições estressantes de temperatura e umidade." Universidade Federal de Goiás, 2015. http://repositorio.bc.ufg.br/tede/handle/tede/4898.

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Léger, Christian. "Development of a Colletotrichum dematium as a bioherbicide for the control of fireweed." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq29737.pdf.

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Govender, Veloshinie. "Evaluation of biological control systems for control of mango post-harvest diseases." Pretoria : [s.n.], 2004. http://upetd.up.ac.za/thesis/available/etd-02102006-160747.

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36

Mukherjee, Gaurab. "The control of seedborne diseases of Linum usitatissimum by biological control agents." Thesis, Queen's University Belfast, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284390.

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Moore, Gareth Ryan. "The role of nutrients in the biological control of water lettuce, Pistia stratiotes lamarck (Araceae) by the leaf-feeding weevil, Neohydronomus affinis Hustache (Coleoptera: Curculionidae) with particular reference to eutrophic conditions." Thesis, Rhodes University, 2006. http://hdl.handle.net/10962/d1005447.

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Water lettuce, Pistia stratiotes Lamarck (Araceae) is a South American plant that has the potential to be a very damaging and important aquatic weed in many tropical countries, including South Africa. It has the potential to rapidly multiply vegetatively and completely cover watercourses in a very short space of time outside of its natural range under ideal conditions and without its natural enemies. In such instances, the weed may cause hindrances to water transport and fishing, increasing chances of malaria, as well as affecting the natural ecology of the system. Water lettuce can also set s

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Mendi, Ebrahim M. "Biological control of Chenopodium album by Ascichyta caulina." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2001. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=59743.

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Grinyer, Jasmine. "Proteomic analysis of the biological control fungus Trichoderma." Doctoral thesis, Australia : Macquarie University, 2007. http://hdl.handle.net/1959.14/12407.

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Thesis by publication.<br>"August 2006"<br>Thesis (PhD)--Macquarie University, Division of Environmental & Life Sciences, Dept. of Biological Sciences & Dept. of Chemistry & Biomolecular Sciences), 2007.<br>Bibliography: leaves 157-183.<br>1. Introduction -- 1.1. Proteomics and two-dimensional electrophoresis -- 1.2. A proteomic approach to study the filamentous fungus Trichoderma -- 1.3. Aims of the thesis -- 2. Materials and methods -- 3. Results and discussion -- 3.1. Method development for the display and identification of fungal proteins by 2DE and mass spectrometry -- 3.2. Discovery of n

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Brown, Wayne A. "Real-time control strategies for cyclical biological reactors." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0023/NQ50121.pdf.

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Batchelor, Timothy Peter. "Parasitoid interactions in behavioural ecology and biological control." Thesis, University of Nottingham, 2005. http://eprints.nottingham.ac.uk/11176/.

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This thesis presents laboratory investigations on the competitive interactions which take place within and between bethylid parasitoids. Part one investigates the compatibility of three bethylids (Cephalonomia hyalinipennis, Cephalononlia stephanoderis and Prorops nasuta) for biocontrol releases against the principal pest of coffee, the coffee berry borer (CBB), Hypothenemus hampei. Cephalonomia hyalinipennis is able to hyperparasitise and consume pupae of C stephanoderis and P. nasuta. Cephalonomia stephanoderis also engages in intra-guild predation, consuming pupae of C hyalinipennis. In con

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Kearns, Leah. "Biological control of Erwinia amylovora by Erwinia herbicola." Thesis, University of Canterbury. Microbiology, 1993. http://hdl.handle.net/10092/6801.

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A naturally-occurring Erwinia herbicola strain, Eh1087, inhibitory to Erwinia amylovora (Burr.) Winslow et al. (1920) was isolated from apple blossom (Malus X. domestica Borkh.) in a Canterbury orchard. Total populations of E. herbicola on apple blossoms in Canterbury and Hawkes Bay orchards were low (less than 50 cfu.blossom-1) throughout flowering, increasing l00-fold at petal drop. E. Herbicola populations at petal drop were more dominant in Canterbury orchards (30-50% of total) than in Hawkes Bay orchards (1-2% of total) in the seasons surveyed. In vitro inhibition of E. amylovora was obse

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Khidr, Sahand Kamal. "Biology and biological control potential of bethylid wasps." Thesis, University of Nottingham, 2012. http://eprints.nottingham.ac.uk/28813/.

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This thesis presents a series of experiments on the evolutionary ecology of the reproduction, behaviour, chemical and molecular characteristics of bethylid wasps in the genus Goniozus. Part One investigates host quality by varying host age after paralysis. The quality of paralyzed hosts declines with time since paralysis negatively influences life-history characteristics of Goniozus nephantidis. Assessment of host metabolomic profiles show which chemicals change as hosts age. Part Two investigates the effect of kin recognition on contest behaviour among adult females ofGoniozus legneri. Compet

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Dando, Malcolm R. "The New Biological Weapons: Threat, Proliferation, and Control." Lynne Rienner Publishers, 2001. http://hdl.handle.net/10454/3933.

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Current revolutions in biotechnology and neuroscience are changing military technologies, necessitating dramatic re-evaluations in arms regulatory regimes. This study assesses how these new technologies can be used in weapons systems - by governments and terrorists alike - and whether this frightening development can be brought under effective international control. Malcolm Dando begins by surveying the existing (and arguably inadequate) control mechanisms for chemical and biological weapons. He then discusses how earlier generations of toxin and bioregulatory weapons have been used by such st

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Holliday, Gillian. "Biological control of seed-borne bacterial plant pathogens." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309601.

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Rind, Bashiran. "Studies relating to biological control of Armillaria mellea." Thesis, University of Sheffield, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369944.

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Crozier, Jayne. "Biological control of wood decay in tropical hardwoods." Thesis, Manchester Metropolitan University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367732.

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48

Manyonge, Lawrence. "Autonomous finite capacity scheduling using biological control principles." Thesis, De Montfort University, 2012. http://hdl.handle.net/2086/7986.

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The vast majority of the research efforts in finite capacity scheduling over the past several years has focused on the generation of precise and almost exact measures for the working schedule presupposing complete information and a deterministic environment. During execution, however, production may be the subject of considerable variability, which may lead to frequent schedule interruptions. Production scheduling mechanisms are developed based on centralised control architecture in which all of the knowledge base and databases are modelled at the same location. This control architecture has d

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Wilson, Michael John. "A nematode parasite for biological control of slugs." Thesis, University of Bristol, 1992. http://hdl.handle.net/1983/531bec1a-d998-4369-abbd-47c8c69e676c.

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Gayzik, Francis Scott. "Optimal Control of Thermal Damage to Biological Materials." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/35087.

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Abstract:

Hyperthermia is a cancer treatment modality that raises cancerous tissue to cytotoxic temperature levels for roughly 30 to 45 minutes. Hyperthermia treatment planning refers to the use of computational models to optimize the heating protocol to be used in a hyperthermia treatment. This thesis presents a method to optimize a hyperthermia treatment heating protocol. An algorithm is developed which recovers a heating protocol that will cause a desired amount of thermal damage within a region of tissue. The optimization algorithm is validated experimentally on an albumen tissue phantom.<p> The tra

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