Pest Management Science

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  1. Using an F(2) screen to monitor frequency of resistance alleles to Bt cotton in field populations of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae).

    Pest Management Science 65(4):391 (2009) PMID 19165746

    In an effort to control the most devastating cotton pest, Helicoverpa armigera (Hübner), in Qiuxian County (Hebei, China), Bt cotton has been planted almost exclusively since 1998 in this area. Owing to the high insecticidal selection pressures in this region, monitoring of Bt resistance in H. a...
  2. Modified female calling behaviour in Cry1Ac-resistant Helicoverpa armigera (Lepidoptera: Noctuidae).

    Pest Management Science 65(4):353 (2009) PMID 19165761

    The resistance risk in Helicoverpa armigera (Hübner) to transgenic cotton that expresses Cry1Ac from Bacillus thuringiensis (Bt) has raised concerns about the sustainable deployment of Bt cotton. Mating behaviour between resistant and susceptible individuals is an important factor that affects r...
  3. Formulation and application of entomopathogenic nematode-infected cadavers for control of Hoplia philanthus in turfgrass.

    Pest Management Science 65(4):367 (2009) PMID 19165730

    Commercially produced entomopathogenic nematodes (EPNs) are usually applied in an aqueous suspension. However, recent studies demonstrate that they can be successfully applied as infected cadavers. EPN-infected insect cadavers were formulated in various carrier/coating materials, but only infect...
  4. Anticoagulant resistance: a relevant issue in sewer rat (Rattus norvegicus) control?

    Pest Management Science 65(4):444 (2009) PMID 19165753

    The majority of rat problems in cities are thought to be related to defective sewers, and the use of anticoagulant rodenticides in such places is often implemented as part of regular urban rodent control. Knowledge pertaining to the resistance status of sewer rat populations is non-existent, whi...
  5. Genetic and biochemical analysis of a laboratory-selected spirodiclofen-resistant strain of Tetranychus urticae Koch (Acari: Tetranychidae).

    Pest Management Science 65(4):358 (2009) PMID 19170251

    Spirodiclofen is a selective, non-systemic acaricide from the new chemical class of tetronic acid derivatives. In order to develop strategies to minimise resistance in the field, a laboratory-selected spirodiclofen-resistant strain of the two-spotted spider mite, Tetranychus urticae Koch, was us...
  6. Mutations in the mitochondrial cytochrome b of Tetranychus urticae Koch (Acari: Tetranychidae) confer cross-resistance between bifenazate and acequinocyl.

    Pest Management Science 65(4):404 (2009) PMID 19165831

    Resistance of Tetranychus urticae Koch to bifenazate was recently linked with mutations in the mitochondrial cytochrome b Q(o) pocket, suggesting that bifenazate acts as a Q(o) inhibitor (Q(o)I). Since these mutations might cause cross-resistance to the known acaricidal Q(o)I acequinocyl and flu...
  7. Resistance of Pakistani field populations of spotted bollworm Earias vittella (Lepidoptera: Noctuidae) to pyrethroid, organophosphorus and new chemical insecticides.

    Pest Management Science 65(4):433 (2009) PMID 19165729

    The spotted bollworm Earias vittella (Fab.) is a serious pest of cotton and okra in Pakistan. Owing to persistent use of insecticides, this pest has developed resistance, especially to pyrethroids. The present studies aimed at determining the extent of resistance to pyrethroid, organophosphorus ...
  8. Pesticide use in ornamental production: what are the benefits?

    Pest Management Science 65(4):345 (2009) PMID 19165759

    Pest control in ornamental production is challenging owing to the diversity of crops grown, the desired aesthetic perfection, the potential economic loss due to failure and the multitude of arthropod pests encountered. Agricultural crops of less value per acre, such as row crops, can tolerate a ...
  9. Effect of compost and casing treatments of insecticides against the sciarid Bradysia ocellaris (Diptera: Sciaridae) and on the total yield of cultivated mushrooms, Agaricus bisporus.

    Pest Management Science 65(4):375 (2009) PMID 19172599

    Bradysia ocellaris (Comstock) is one of the major pests of cultivated mushrooms, Agaricus bisporus (Lange) Imbach. The feeding of sciarid fly larvae causes damage to the cultivation substrates, compost and casing. A comparative study of insecticidal treatments incorporated into compost and casin...
  10. Effect of additives in aqueous formulation on the foliar uptake of dimethomorph by cucumbers.

    Pest Management Science 65(4):426 (2009) PMID 19165749

    The efficacy enhancement of dimethomorph formulation by several adjuvants is thought to be through increased foliar uptake. In order to identify the most effective adjuvants, the adjuvancy of 36 additives was examined in aqueous formulations in relation to the absorption of dimethomorph by cucum...
  11. Low glyphosate rates do not affect Citrus limonia (L.) Osbeck seedlings.

    Pest Management Science 65(4):420 (2009) PMID 19170040

    Glyphosate is used to control weeds in citrus orchards, and accidental spraying or wind drift onto the seedlings may cause growth arrest owing to metabolism disturbance. Two experiments were carried out to investigate the effect of non-lethal rates (0, 180, 360 and 720 g AI ha(-1)) of glyphosate...
  12. Sexual recombination of carbendazim resistance in Fusarium graminearum under field conditions.

    Pest Management Science 65(4):398 (2009) PMID 19170042

    Carbendazim has been the major fungicide for control of Fusarium head blight (FHB) caused by Fusarium graminearum Schwade in China. However, the effectiveness of carbendazim has been threatened by the emergence of resistant pathogen populations in the field. Five isolates, representing three phe...
  13. High-throughput detection of highly benzimidazole-resistant allele E198A with mismatch primers in allele-specific real-time polymerase chain reaction.

    Pest Management Science 65(4):413 (2009) PMID 19130565

    A point mutation often confers resistance of organisms against medical drugs and agricultural pesticides. Allele-specific nucleotide polymerase chain reaction (ASPCR) and allele-specific quantitative real-time PCR using SYBR Green (ASQPCR) are widely and effectively applied to detect and monitor...
  14. Surface-applied insecticide treatments for quarantine control of Japanese beetle, Popillia japonica Newman (Coleoptera: Scarabaeidae), larvae in field-grown nursery plants.

    Pest Management Science 65(4):381 (2009) PMID 19165744

    Japanese beetles, Popillia japonica Newman, are a quarantine challenge for nursery shipments from infested to non-infested states. Marathon (imidacloprid) and Discus (imidacloprid + cyfluthrin) are approved preharvest nursery treatments (US Domestic Japanese Beetle Harmonization Plan; DJHP). Thi...
  15. Effect of different formulations on tebuconazole residues in stone fruits.

    Pest Management Science 65(4):440 (2009) PMID 19165745

    The correlation between pesticide residue levels and formulation of an active substance is often not considered, even if it is reasonable to expect some differences arising from behaviour during dilution and spraying, from adhesion to plant and from degradation. An experimental study to investig...
  16. The Year of the Rat ends - time to fight hunger!

    Pest Management Science 65(4):351 (2009) PMID 19206089

    This paper investigates the importance of ecologically based rodent management in the light of the current food crisis, and the potential effects of this approach on the position of the undernourished. Hunger and food prices are on the rise owing to shortages that can be traced to reasons such a...
  17. Reduced egg viability in codling moth Cydia pomonella (L.) (Lepidoptera: Tortricidae) following adult exposure to novaluron.

    Pest Management Science 65(3):283 (2009) PMID 19115228

    The codling moth, Cydia pomonella (L.), is one of the principal pests of pome fruits in the world. The effects of novaluron, a benzoylurea chitin synthesis inhibitor insecticide registered for use on apples in the USA, on fecundity and egg viability in codling moth were studied under laboratory ...
  18. Toxicity of delta-phenothrin and resmethrin to non-target insects.

    Pest Management Science 65(3):300 (2009) PMID 19097021

    The susceptibility of adult house cricket, Acheta domesticus (L.), adult convergent lady beetle, Hippodamia convergens (Guérin-Méneville), and larval fall armyworm, Spodoptera frugiperda (JE Smith), to resmethrin and delta-phenothrin synergized with piperonyl butoxide (PBO) was evaluated in a la...
  19. Lack of fitness costs associated with pyriproxyfen resistance in the B biotype of Bemisia tabaci.

    Pest Management Science 65(3):235 (2009) PMID 19097024

    The insect growth regulator pyriproxyfen has provided effective control of the whitefly Bemisia tabaci Gennadius in many countries. Here, whether or not fitness costs were associated with pyriproxyfen resistance in a laboratory-selected resistant strain (QC02-R) of the B biotype was determined. ...
  20. Influence of glyphosate, crop volunteer and root pathogens on glyphosate-resistant wheat under controlled environmental conditions.

    Pest Management Science 65(3):288 (2009) PMID 19115241

    The herbicide glyphosate has a synergistic effect on root disease because of increased susceptibility from reduced plant defenses resulting from the blockage of the shikimic acid pathway. Could glyphosate-resistant (GR) wheat cultivars and glyphosate application in-crop increase the risk of dama...