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 18 of 18 for “"chemical insecticides"”.
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Evaluation of transgenic, Bt-containing corn hybrids
… plant resistance, introduced ECB predators, and chemical insecticides, have had some successes but economic loss to producers is still common. Advances in biotechnology have provided the tools to produce transgenic plants. Transgenic corn hybrids containing a modified Bacillus thuringiensis (Bt) …
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Compatible components of the integrated pest management of Bathycoelia distincta (Hemiptera: Pentatomidae
… on the kernel. Currently, 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 …
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Non-Chemical Insecticidal Textiles
… Efforts to control mosquito populations with chemicals and habitat elimination are often beyond the means of many nations. In addition, both mosquitoes and the diseases they carry are becoming resistant to common chemical and medical interventions. In most cases vaccines are not available. …
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Entomopathogenic nematode interactions with white grubs from forest and sugarcane plantations
… their control has mainly been through the use of chemical insecticides. Such alternatives can include the use of entomopathogenic nematodes, EPNs. A review of the available literature revealed that EPNs can potentially provide a higher percentage control of white grubs, when compared to chemical …
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Herbivorous insects interaction with entomopathogenic fungi (based on species of Hymenoptera and Lepidoptera orders) /
… and Hymenoptera are the major orders of pests. Chemical pest control is still the predominant type of pest control today. One of alternatives to chemical insecticides is the use of biological preparations based on entomopathogenic fungi. The aim of the research was to determine the diversity of …
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Evaluasi ketahanan beberapa aksesi bunga matahari (Helianthus annus L.) terhadap ulat grayak (Spodoptera litura F.)
… particularly to reduce dependence on synthetic chemical insecticides. Because of pest resistant varieties is an integral part of integrated pest management (IPM), because resistant varieties have an important role in reducing pest attack and the use of synthetic chemical insecticides. The study …
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STUDIES ON INSECTICIDE RESISTANCE IN TUTA ABSOLUTA (MEYRICK), WITH SPECIAL EMPHASIS ON CHARACTERISATION OF TWO TARGET SITE MECHANISMS
… and reductions to both yield and fruit quality. Chemical insecticides have been the main control tools used against T. absoluta, but decreasing efficacy has been attributed to the development of insecticide resistance. During this study, leaf-dip bioassays were used to quantify responses of five …
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Comparative studies of the microbial composition and diversity of container-dwelling mosquitoes
The growing problem of mosquito resistance to chemical insecticides has reinforced the urgent need to develop alternative vector control strategies that exploits current advances in mosquito biology including mosquito-microbe interactions. The goal of this research was to develop a better …
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Genetic Analysis of Tritrophic Interactions between Entompathogenic Nematodes, Symbiotic Bacteria and Blood – Sucking Flies.
… species have evolved resistance to traditional chemical insecticides and the search for novel control strategies in endemic areas is a priority in vector control. Entomopathogenic nematodes (EPNs) are microscopic roundworms, which are obligate parasites of insects from the family Rhabditae. In …
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Development of an integrated pest management strategy for the control of Maruca Vitrata on cowpea in Kebbi state of Nigeria
… of calendar based application of broad spectrum chemical insecticide (Mixture of 30g cypermethrin and 250g dimethoate) in Kebbi State of Nigeria. The study initially made use of a survey backed up by focus group interviews to gather information on the types of farmers’ cowpea cultivation …
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Pengaruh pemetikanan kuncup bunga terhadap pertumbuhan dan produktivitas pada beberapa aksesi tanaman kapas (Gosypium hirsutum L.)
… productivity up to 30-50% cotton. Control chemically created many environmental problems, such as pollution and increased resistance of pests to synthetic chemical insecticides. One of the solutions to these problems is the use of resistant varieties (resistant), as indeterminit cotton …
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Discovery of an extracellular stress sensory protein in Beauveria bassiana and identification of photolyase encoding phr-1 sequences in five entomopathogenic fungi
… are being developed as an alternative to chemical insecticides. Their effectiveness can be enhanced through understanding of the mechanisms of response to environmental stresses and conditions. An aspect of repair of ultraviolet radiation induced DNA damage and response to high temperature …
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Assessing the synergy between the Sterile Insect Technique and Classical Biological Control for sustainable management of the invasive pest Bagrada hilaris (Hemiptera: Pentatomidae)
… unsustainable. Moreover, the prolonged use of chemical insecticides causes the emergence of pest resistance to such active substances, raising the urgent need to shift to targeted and more effective control techniques. The aim of this research was to investigate the potential application of the …
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DEVELOPMENT OF THE STERILE INSECT TECHNIQUE FOR THE INTEGRATED MANAGEMENT OF THE BROWN MARMORATED STINK BUG HALYOMORPHA HALYS STÅL (HEMIPTERA: PENTATOMIDAE): BASIC REQUIREMENTS AND NEW KNOWLEDGE ACQUISITIONS TO SET UP THE NEW TOOL
… of this species is mainly based on the use of chemical insecticides, which show efficacy when applied frequently, with consequent negative impact on beneficial insects in the agroecosystems. As a result, there is a desire for more environmentally friendly solutions for the management of BMSB. A …
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Uji patogenisitas beberapa isolat SlNPV (Spodoptera litura Nuclear Polyhedrosis Virus) terhadap tingkat mortalitas ulat grayak (Spodoptera litura F.) pada tanaman kedelai (Glycine max L.)
… Until now farmers control pests S. litura using chemical insecticides. This resulted in negative impacts such as: symptoms of resistance, resurjensi pests, killing of natural enemies, increased pesticide residues on crops, polluting the environment and health problems for users. Reduced use of …
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Pemanfaatan minyak biji jarak pagar (Jatropha curcas L.) sebagai insektisida nabati terhadap mortalitas larva Spodoptera litura F. (ulat grayak)
… telur. ENGLISH: The application of synthetic chemical insecticides can cause various negative impacts include: pest resistance, resurjensi, the emergence of secondary pests, soil pollution, poisoned user, and poison the host. Jatropha seed oil (J. curcas) contains chemical compounds such as …
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Aspects of spatial and habitat ecology of multiple Anopheles species (Diptera: Culicidae): malaria vectors in the highlands and foothills of Ecuador
… through habitat removal and the use of chemical insecticides. Other anopheline species were previously limited to low-altitude regions, except in a few unconfirmed cases. A thorough larval collection effort (n=438 attempted collection sites) in all road-accessible parts of Ecuador except …
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The soil ecology of Serratia entomophila, A bacterial pathogen of the New Zealand grass grub, Costelytra zealandica (White)
Serratia entomophila (Enterobacteriaceae) is a newly described species of bacterium, currently being developed as a biological control agent for the New Zealand grass grub Costelytra zealandica (White) (Coleoptera: Scarabaeidae). The bacterium causes amber disease; the larvae stop feeding and …