Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 58 for “"biocontrol agents"”.
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Killer yeasts as antifungal biocontrol agents
The ability of killer yeast to inhibit the growth of fungi, specifically wood decay fungi, has been investigated. An initial broad screen of 17 yeast versus 17 fungi demonstrated that killer yeast can and do exhibit antagonistic as well as growth stimulatory affects on fungi. Yeast from the …
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GRAPEVINE-ASSOCIATED MICROORGANISMS AS BIOCONTROL AGENTS AGAINST THE PROLIFERATION OF PATHOGENIC FUNGI
This PhD project aim at selecting potential biocontrol agents able to prevent, or limit, the infection of grapevine and grape (table and wine) by pathogenic fungi, in pre- harvest periods, in order to set an eco-friendly plant protection strategy as alternative to reduce both the use of chemicals …
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A CONTRIBUTION TO THE STUDY OF BIOCONTROL AGENTS APITHERAPY AND OTHER POTENTIAL ALTERNATIVES TO ANTIBIOTICS
… of and the development of novel antimicrobial agents, which are effective against these pathogens has declined significantly. As a result, we urgently need effective alternatives to the use of antibiotics. The overall aim of the study was to add further our knowledge of some of these …
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Small Fruit Production in Mountain Areas with the use of Biocontrol Agents: Investigating Farmers' Attitudes and Consumers' Choice in Trentino.
… pesticides on the environment and human health. Biocontrol agents (BCAs) can serve as an alternative to chemicals in integrated pest management (IPM) systems. Although the adoption of BCAs is strongly affected by the socioeconomic environment in which they are to be applied and by farmersâ€TM …
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Field survival of Xanthomonas cucurbitae, the causal agent of bacterial spot of pumpkin, and efficacy of selected chemicals and biocontrol agents for control of the diseases
… to evaluate efficacy of selected chemicals and biocontrol agents for control of bacterial spot of pumpkin. To assess survival of X. cucurbitae in the field, a factorial experiment was setup at the University of Illinois Fruit and Vegetable Research Farm in Urbana, IL. Field location, plant …
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Biological control of Culex mosquitoes using multiple predators
… Copepods have been particularly successful biocontrol agents for mosquitoes. However, the efficacy of biological control agents is mediated by context-dependencies, which are often poorly understood. A functional response (FR) approach is frequently used to derive per capita ecological …
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Understanding and exploiting bacteriophage-host interactions for the control and detection of listeria monocytogenes
… of the disease listeriosis by applying phages as biocontrol agents against the pathogen L. monocytogenes and by incorporating phages into systems for the detection of this pathogen. Phage vB_LmoH_P61, a lytic phage isolated from grass silage, was applied to food matrices for the biocontrol of L. …
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Combining natural enemies and selective pesticides in IPM programmes of exotic pests: the Tuta absoluta (Lepidoptera: Gelechiidae) case
… at providing key bases for including indigenous biocontrol agents of T. absoluta in IPM programs on tomato in Europe. A survey carried out in 3 Italian regions demonstrated that T. absoluta was rapidly used as host by indigenous parasitoids. The recovered species were mainly generalist idiobiont …
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Cloning and expression of a modified oryzacystatin inhibitor gene and an investigation of its inhibitory capabilities
… proteinase inhibitors have shown potential as biocontrol agents for the protection of plants against insect and pathogen attack. With the advent of protein and genetic engineering such inhibitors can now be modified in order to improve their effectiveness. Because cystatins have already been …
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Non-chemical methods for managing bacterial spot of cucurbits caused by Xanthomonas cucurbitae
… were conducted to evaluate the effectiveness of biocontrol agents for managing bacterial spot, screen cucurbit cultivars and accessions for resistance to X. cucurbitae, and evaluate the pathogen's survival on plant debris, weeds, and different crop rotations. For evaluation of the biocontrol …
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Mechanisms of biological control of the damping-off fungus, Pythium ultimum, by binucleate Rhizoctonia / by K. Siwek.
… competitor, is the principal attribute of these biocontrol agents that brings about a sucessful control of P.u. sporangiiferum in nursery potting mix.
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Effects of Natural Enemies and Host Condition on Populations of Insect Pests of Trees
… in parasitism might help guide efforts to find biocontrol agents.
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Effectiveness of Root-Boring Knapweed Weevil (Cyphocleonus achates Fåhr.) Herbivory on Spotted Knapweed (Centaurea stoebe Lam.) in Kamloops, BC: A Five-year Review
… (Cyphocleonus achates) is one of 13 approved biocontrol agents. In 2017 and 2018, root-boring knapweed weevils were released at 15 sites across Kamloops, BC, Canada. This study is a five-year follow-up on the possible effects of C. achates on spotted knapweed density, distribution, and vigour. …
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The treatment of bacterial disease of plants by bacteriophage coated nanoparticles
… a potentially good candidate for use of biocontrol agents for crop pathogen treatment.
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Bio-control of root rot disease in vanilla
… is available on fungal pathogenicity. Biocontrol is the main alternative for disease control in this crop, an attractive approach because of increasing concerns for environmental protection. The investigation considers two biocontrol strategies: first the introduction of virulent, …
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Listeria monocytogenes in the mushroom production environment: biofilm formation and control measures
… had the potential to be utilised as a biocontrol agent in the form of a competitive exclusion organism against L. monocytogenes. However, in a similar pattern to the biocidal products, this efficacy did not translate well in pilot-scale trials as it was found to be ineffective when …
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Patterns of parasitism and emergence in the gall midge Dasineura Dielsii (Diptera: Cecidomyiidae) : a biological control agent of Acacia cyclops in South Africa
… in South Africa and this has limited biocontrol agents to those that reduce only reproductive capacity. Dasineura dielsii was released in 2002 as a biocontrol agent for A. cyclops. This gall-forming midge destroys inflorescences and prevents seedpods from forming, but allows continued …
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New sustainable approaches for control of postharvest diseases of citrus fruit
… major pathogens of citrus fruit being the causal agents of green and blue mold diseases, respectively. Control of these pathogens has classically been conducted with chemical fungicides, but a growing international concern over the often indiscriminate use of synthetic fungicides, the presence of …
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Biological control of wood decay in ground contact timbers
… have been extensively investigated as potential biocontrol agents in agriculture and forestry. <br/><br/>A small-scale wood-based screening system was developed for the rapid assessment of biocontrol potential. The screening system used non-sterile soil as a test medium to provide a natural …
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