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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 16 (1967), S. 0 
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Six trials were done during three years (1966–69) in eastern England to study how known amounts of insecticidal seed dressings affect the growth of winter wheat and the severity of attack by wheat bulb fly larvae. In the first two years γ-BHC dry dressing was applied to seeds previously treated with a liquid organomercury fungicide, but in the third year seeds were dressed with powders containing fungicide mixed with the insecticides γ-BHC, chlorfenvinphos or ethion. Analysis using gas liquid chromatography showed that the ethion+ fungicide dressing stuck to the seeds much better than the chlorfenvinphos+fungicide dressing or either formulation of γ-BHC. Some ethion, γ-BHC and chlorfenvinphos later fell off the seeds, the exact amount depending on the method of drilling. Small amounts of insecticide, less than about 10μg/seed of γ-BHC or less than about 15μg/seed of the organophosphorus compounds, were ineffective against wheat bulb fly. Increasing amounts of all three insecticides progressively decreased the percentage of damaged shoots and the percentage of plants with live larvae, but more of the organophosphorus insecticides, especially of ethion, was generally needed to give the same protection as γ-BHC. No seed treatment damaged seedlings in trials on peaty loams or sandy clay loams, but seeds dressed with the standard amount of liquid organomercury fungicide and several different amounts of γ-BHC dry dressing germinated poorly in the sandy loam soils.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Seed dressings of organophosphorus and carbamate insecticides, at 0⋅1 per cent and 0⋅5 per cent active ingredient to weight of seed, were compared with heptachlor and ethion standards for control of wheat bulb fly during 1966–68. Short rows of treated seeds were sown in autumn on sites infested with wheat bulb fly eggs, and sample plants were examined in spring. The effective new materials, judged by the percentage of damaged shoots and the percentage of plants containing live larvae, were R 42211 (0,0-diethyl 0-(2-diethylamino-6-methyl-pyri-midin-4-yl) phosphorothioate), B 77488 (0,0-diethyl phosphorothioate 0-ester with phenylglyoxylonitrile oxime), B 80833 (0-methyl 0-3,4-dichlorophenyl methyl phosphonothionate), ‘Dursban’ (0,0-diethyl O-3,5,6-trichloro-2-pyridyl phosphorothioate) and bromophos-ethyl. However, both doses of ‘Dursban’ and bromophos-ethyl. and the larger dose of B 80833 damaged young seedlings. There was only slight damage with the large dose of B 77488 and none with R 42211, so these two compounds were the most promising new materials tested.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: New insecticides, some in novel formulations, and insect repellents were tested during 1968–71 as seed dressings to protect winter wheat against attack by wheat bulb fly larvae. Preliminary tests in the laboratory were followed by trials in fields in the Midlands and eastern England. The synthetic pyrethroid insecticide resmethrin at one per cent active ingredient to weight of seed significantly decreased attack by wheat bulb fly in one trial on a sandy clay loam but not on other soils or in other years. The best protection against attack in the field was given by the organophosphorus insecticides C8874 (O,O-diethyl O-2,5-dichloro-4-iodophenyl thiophosphate) and C18244 (O-ethyl-O-(2,5-dichloro-4-iodophenyl) ethyl thiophosphohate). These compounds were more eflective than chlorfenvinphos used as a standard but are unlikely to be developed further in this country.Using polyvinyl acetate formulations, much larger amounts of pyrethroids could be applied to the seeds without decreasing plant emergence, but insect control was not improved. Pre-treatment with liquid paraffin,‘Lutanol M40’(polyvinyl methyl ether) or ‘Polyvis 200’(polybutene) improved adhesion of γ-BHC powder to seed, but effects on plant emergence and on insect control need more testing. A uniform seed to seed distribution of liquid insecticide was obtained by dipping seeds in dilute emulsions of ethion, but these seeds germinated less well than seeds treated with a commercial powder formulation of the same insecticide.Seed dressings of the insect repellents ‘Deet’(N,N-diethyl m-toluamide), MGK 11 (2,3:4,5-bis(2-butylene) tetrahydro-2-furaldehyde) or MGK 874 (2-hydroxyethyl-n-octyl sulphide) failed to protect winter wheat from attack by wheat bulb fly in the field.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 187 (1960), S. 346-346 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] During oviposition the female parasite lays a single egg, with precision, into the fused thoracic ganglia of each aphid, and it has been shown2 that the parasite will readily attack the following species of aphids occurring on lettuce : Nasonovia ribis-nigri (Mosley), Macrosiphum euphorbiae ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 325 (1987), S. 614-616 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Perception of the sex pheromone in aphids is thought to be associated with the secondary rhinaria on the antennae of males4. With electrophysiological recording techniques in which single-cell preparations are used to monitor the effluent from high-resolution gas chromatography (GC-SCR)5 we have ...
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 70 (1983), S. 254-255 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Entomologia experimentalis et applicata 10 (1967), S. 171-180 
    ISSN: 1570-7458
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Um den Einfluß von Insektiziden auf das Freßverhalten von Drahtwürmern zu prüfen, wurden auf zweierlei Weise Filtrierpapierscheiben benutzt, die mit dem Nährstoff vollgesogen waren: a) durch Zumischen der Insektizide in den Boden, so daß die Drahtwürmer ihrer Kontaktwirkung nicht entgehen konnten (Bodenbehandlung), b) durch Aufbringen der Insektizide auf die Nährscheiben selbst (Scheibenbehandlung). Drahtwürmer hörten einige Tage oder Wochen vor ihrem Tode auf zu fressen, wenn sie in Böden vergraben waren, die mit 3,7 ppm Aldrin, Bayer 38156 (O-ethyl-S-p-totyl-ethyl phosphonodithioate), N 2790 (O-ethyl-S-phenyl-ethyl-phosphonodithioate) oder Thionazin behandel waren. 3 von 10 Drahtwürmern gewannen ihre Freßfähigkeit langsam wieder, nachdem sie für 4 Tage in Boden vergraben gewesen waren, der mit 3,7 ppm γ-BHC behandelt war. Die Freßfähigkeit wurde wenig beeinflußt, wenn die Drahtwürmer in Boden eingeschlossen wurden, der Bromophos, Dichlofenthion, Ethion oder RD 14838 (3-isopropylphenyl N-acetyl N-methylcarbamate) enthielt, von denen keines sehr giftig für Drahtwürmer ist. Wenn die Insektizide den Nahrungsscheiben zugefügt wurden, wurden die mit Thionazin oder γ-BHC behandelten Scheiben weniger oft befressen als diejenigen, die nur die Nahrung enthielten. Mit Nahrungsstoffen und Aldrin behandelte Scheiben wurden bereitwillig befressen, aber die Drahtwürmer hörten später zu fressen auf und starben.
    Notes: Abstract Filter-paper discs soaked in nutrient were used to study how insecticides affect the biting behaviour of wireworms. When wireworms were buried in soils treated with 3.7 ppm aldrin, Bayer (381561), N 2790 or thionazin they stopped biting several days or weeks before they died. Three out of ten wireworms slowly recovered their biting ability after being buried for 4 days in soil containing 3.7 ppm γ-BHC. Biting behaviour was little affected when wireworms were confined to soils containing insecticides known to be not very toxic to wireworms. Nutrient discs treated with thionazin or γ-BHC were bitten less often than discs containing nutrient alone. Those treated with nutrient and aldrin were bitten almost as often as nutrient discs but the wireworms later stopped biting and died.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Entomologia experimentalis et applicata 27 (1980), S. 199-201 
    ISSN: 1570-7458
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Entomologia experimentalis et applicata 36 (1984), S. 197-199 
    ISSN: 1570-7458
    Keywords: Aphididae ; Myzus persicae ; Phorodon humuli ; Lipaphis erysimi ; alarm pheromone ; inhibitor ; (E)-β-farnesene ; (-)-β-caryophyllene ; Humulus lupulus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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