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Showing 1 to 20 of 64 for “"biological control agents"”.
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Characteristics of biological control agents and their antagonism against rice pathogens and pests
… rice farming. The use of beneficial microbial agents for the control of pathogens and pests is a potential tool to sustain rice productivity and reduce ecological and environmental impacts due to pesticide overuse. Initially, 15 putatively beneficial bacteria, previously shown to be …
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Biological control agents of soybean insect pests in the Tidewater area of Virginia
The species of biological control agents which affect soybean pests in the Tidewater area were investigated, and their relative values were determined. Two pentatomids, <u>Podisus Macu1iventris</u> Say and <u>Stiretrus anchorago</u> F., were the only significant bio-contro1 agents which attacked …
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Using Modelling to Optimise the Use of Biological Control Agents Against Soil-Borne Plant Pathogens
There is considerable interest in the use of biological control agents as a control strategy against plant pathogens. However, significant variability in their success at pathogen suppression across field trials has resulted in them often not being seen as commercially viable. This thesis uses …
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Take-all in Wheat: PCR Identification of the Pathogen and the Interactions Amongst Potential Biological Control Agents
… to predict effective combinations of bacteria as biological control agents. Detection was based on avenacinase-based primers and polymerase chain reaction (PCR) conditions specified by earlier research. PCR conditions were modified to effect detection. The annealing temperature was lowered from 68 …
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Oidaematophorus monodactylus (L.) and Bedellia somnulentella (Zeller): two potential biological control agents of hedge bindweed in southwestern Virginia
Oidaematophorus monodactylus (L.) is a plume moth commonly found feeding on hedge bindweed (Convolvulus sepium L.) in southwestern Virginia. Females maintained at 23.9 + 1°C laid an average of 173 eggs, 61% viable, during a 10-day oviposition period. Average larval leaf consumption was 13 cm² at …
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Establishment potential of non-native glasshouse biological control agents, with emphasis on 'Typhlodromips montdorensis' (Schicha) (Acari: Phytoseiidae) in the UK
… is a non-native predatory mite used for control of red spider mite and thrips, but is not yet licensed for use in the UK. Current legislation requires that non-native glasshouse biological control agents may not be introduced into the UK without a risk assessment of establishment …
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Seed-reducing Cecidomyiidae as potential biological control agents for invasive Australian wattles in South Africa, particularly Acacia mearnsii and A. cyclops
The collection of gall-forming Cecidomyiidae specimens and their parasitoids from Australia and South Africa during this project produced a large and valuable assemblage of material, most of which will be or has been lodged with the National Insect Collection (Pretoria) (parasitoids) or the South …
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Barcoding alien invertebrates and biological control agents in South Africa, with a focus on the natural enemies of Thaumatotibia leucotreta (Meyrick)
… while only two species have been trialled as biological control agents against the pest. The projected shifts in species distribution patterns due to globalisation and climate change underscore the need for comprehensive baseline genetic and distribution data of alien invertebrate species and …
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Laboratory rearing, establishment, subterranean survivorship, and thermal requirements of Laricobius spp. (Coleoptera: Derodontidae), biological control agents released for Adelges tsugae (Hemiptera: Adelgidae)
… Pinaceae). In the early 2000's, a robust biological control initiative using Laricobius spp. (Insecta: Coleoptera) was launched with the goal of decreasing HWA's impact to hemlock and the associated ecosystems on landscape level. Since then, two Laricobius agents, Laricobius nigrinus …
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The natural enemies of Asparagus asparagoides (L.) Wight in South Africa and their potential for use as biological control agents in Australia
… two factors that make chemical and/or mechanical control difficult. The fruit is bird dispersed which facilitates colonisation of new sites. Surveys for potential biological control agents for use against bridal creeper in Australia were initiated in South Africa during 1989. This dissertation …
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Thermal biology and establishment potential of two non-native candidate biological control agents, Nesidiocoris tenuis Reuter (Hemiptera: Miridae) and Lysiphlebus testaceipes (Cresson) (Hymenoptera: Braconidae, Aphidiinae), in the U.K.
… Braconidae, Aphidiinae) are candidate biological control agents known to play an important role in the management of agricultural and horticultural pests in southern Europe. Through a series of laboratory and field assessments, this study investigates the establishment potential of …
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Interactions between the rust fungus Puccinia carduorum Jacky and the musk thistle herbivores Trichosirocalus horridus (Panzer), Rhinocyllus conicus Froelich (Curculionidae: Coleoptera), and Cassida rubiginosa Muller (Coleoptera; Chrysomelidae)
… rust fungus Puccinia carduorum Jacky with three biological control agents, Trichosirocalus horridus (Panzer), rhinocvllus conicus Froelich, and Cassida rubiginosa Müller and their combined impact on must thistle, Carduus thoermeri Weinmann were studied.
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Novel antagonistic bacteria as prospective agents for the biocontrol of some plant bacterial diseases
Biological control of plant pathogenic bacteria is the latest method and alternative tool to application of chemicals in order to exclude or reduce the effect of pathogens. During the last four decades efforts have been continued to improve biological control agents as commercial products for use …
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Avaliação de técnicas de separação fluido-sólido na produção de bioinseticidas a partir de Bacillus sphaericus e Bacillus thuringiensis var. israelensis
… and Bacillus sphaericus. Both are used as biological control agents to control larval insects related to endemic diseases such as yellow fever, filariasis and malaria. The fermented broths were produced batch wise from limpid and turbid cultivation media. The last one envisaging the …
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Compatible components of the integrated pest management of Bathycoelia distincta (Hemiptera: Pentatomidae
… growers rely on chemical insecticides to control stink bug populations. However, with overreliance and extensive use of chemical insecticides, the B. distincta has developed some resistance to certain active ingredients Furthermore, there is no doubt that agricultural intensification is …
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Microbial ecology of freshly sawn yellow-poplar lumber ( Liriodendron tulipifera L.) in two seasons
… potential alternative to chemical biocides is biological control. The most recent success in the field of biological control has been achieved in the agricultural industry by first studying the microbial ecology of the substrate in which the biologically based preservative is to be used. …
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Studies on the Subterranean Activity of Laricobius spp. (Coleoptera: Derodontidae) using 3D X-ray Analysis and Three Imidacloprid Soil Application Techniques
… that combines chemical, silvicultural, and biological control tactics to create a more sustainable and effective approach for managing HWA. Laricobius spp. (Coleoptera: Derodontidae) are the primary biological control agents within IPM scenarios for HWA. Imidacloprid (IMI), the most widely …
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The impact of Tomicobia tibialis (Hymenoptera : pteromalidae) on the pine engraver, Ips pini (Coleoptera : scolytidae)
Augmentative release of biological control agents against pest insects is a management tool that has been largely ignored in forestry due to a lack of understanding and means of producing potential agents. I investigated the effects of Tomicobia tibialis Ashmead on the reproductive potential of …
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Pemanfaatan filtrat bakteri endofit kitinolitik untuk pengendalian nyamuk Aedes aegypti L.
… producing bacteria that have the potential as biological control agents. The purpose of this study was to determine the effect of Filtrate Endophytic Chitinolytic Bacterial (Bacillus mycoides Klebsiella ozaenae and Pseudomonas pseudomallei) for mortality, abnormalities and morphological changes …
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Thermal biology and behaviour of two predatory Phytoseiid mites: Amblyseius swirskii (Athias-Henriot) (Acari:Phytoseiidae) and Phytoseiulus longipes (Evans) (Acari:Phytoseiidae)
… and Phytoseiulus longipes are targeted as biological control agents for the horticultural pest Tetranychus urticae. This study applies a standardised protocol to evaluate the risk of establishment of introduced species and investigates temperature related behavioural thresholds for all …
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