Analysis of pyrethroids on grains

Desmarchelier, James M.

doi:10.1016/0022-474x(76)90040-0

Journal of Stored Products Research

1976

DOI: 10.1016/0022-474x(76)90040-0

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Analysis of pyrethroids on grains

James M. Desmarchelier

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1980

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Cited by 12 publications

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Chlorpyrifos‐methyl plus bioresmethrin; Methacrifos; Pirimiphos‐methyl plus bioresmethrin; and synergised bioresmethrin as grain protectants for wheat

et al. 1980

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Field trials with various pesticide combinations were carried out on bulk wheat in commercial silos in Queensland, South Australia and Western Australia. Laboratory bioassays on samples of treated grain at intervals over 8 months using malathionsusceptible and malathion-resistant strains established the following orders of efficacy: against Sitophilus oryzae (L.), chlorpyrifos-methyl 10 mg kg-l+ bioresmethrin 1 mg kg-l= methacrifos 15 mg kg-l in aerated storage > pirimiphos-methyl 4 or 6 mg kg-l+ bioresmethrin 1 mg kg-l= bioresmethrin 4 mg kg-l+ piperonyl butoxide 16 mg kg-1; against Rhyzopertha dominica (F.), bioresmethrin 4 mg kg-lf piperonyl butoxide 16 mg kg-l> methacrifos 15 mg kg-l> chlorpyrifos-methyl 10 mg kg-l + bioresmethrin 1 mg kg-l= pirimiphos-methyl 4 or 6 mg kg-l+ bioresmethrin 1 mg kg-1. All treatments completely prevented production of progeny in Sitophilus granarius (L.), Tribolium castaneum (Herbst), T. confusum Jackquelin du Val and Oryzaephilus surinamensis (L.). The biological efficacy of methacrifos was greater and the rate of degradation lower in aerated than in non-aerated storage. Residue levels of all compounds were determined chemically and were below proposed international residue levels to be considered by the Codex Alimentarius Commission.

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Chlorpyrifos‐methyl plus bioresmethrin; Methacrifos; Pirimiphos‐methyl plus bioresmethrin; and synergised bioresmethrin as grain protectants for wheat

et al. 1980

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Fenitrothion plus (1R)‐phenothrin, and pirimiphos‐methyl plus carbaryl, as grain protectant combinations for wheat

et al. 1980

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Duplicate field trials were carried out on bulk wheat in commercial silos in Queensland and New South Wales. Laboratory bioassays on samples of treated grain at intervals over 9 months, using malathion‐resistant strains of insects, established that treatments were generally effective. Fenitrothion (12 mg kg−1)+ (1R)‐phenothrin (2 mg kg−1) was more effective than pirimiphos‐methyl (6 mg kg−1) + carbaryl (10 mg kg−1) against Sitophilus oryzae (L.) and Ephestia cautella (Walker); the order of effectiveness was reversed for S. granarius (L.). Against Rhyzopertha dominica (F.), Tribolium castaneum (Herbst), T. confusum Jackquelin du Val and Oryzaephilus surinamensis (L.), both treatments effectively prevented the production of progeny. The order of persistence was pirimiphos‐methyl> (1R)‐phenothrin>carbaryl or fenitrothion. During processing from wheat to white bread, residues were reduced by 98% for carbaryl, >44% for (1R)‐phenothrin, 98% for fenitrothion and 85% for pirimiphosmethyl.

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Simultaneous estimation of bioresmethrin and piperonyl butoxide by gas‐liquid chromatography with chemical‐ionisation mass spectrometry

Cave¹

1981

Pestic. Sci.

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Analysis of pyrethroids on grains

Cited by 12 publications

References 11 publications

Chlorpyrifos‐methyl plus bioresmethrin; Methacrifos; Pirimiphos‐methyl plus bioresmethrin; and synergised bioresmethrin as grain protectants for wheat

Chlorpyrifos‐methyl plus bioresmethrin; Methacrifos; Pirimiphos‐methyl plus bioresmethrin; and synergised bioresmethrin as grain protectants for wheat

Fenitrothion plus (1R)‐phenothrin, and pirimiphos‐methyl plus carbaryl, as grain protectant combinations for wheat

Simultaneous estimation of bioresmethrin and piperonyl butoxide by gas‐liquid chromatography with chemical‐ionisation mass spectrometry

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