Journal: Pest Management Science

Abbreviation

Pest manag. sci.

Publisher

Wiley

Journal Volumes

ISSN

1526-498X
1526-4998

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Publications 1 - 10 of 10
  • Jasmonate- and salicylate-mediated plant defense responses to insect herbivores, pathogens and parasitic plants
    Item type: Journal Article
    Smith, Jordan L.; De Moraes, Consuelo M.; Mescher, Mark C. (2009)
    Pest Management Science
  • Testing MACRO (version 5.1) for pesticide leaching in a Dutch clay soil
    Item type: Journal Article
    Scorza Junior, Romulo P.; Jarvis, Nicholas J.; Boesten, Jos J. T. I.; et al. (2007)
    Pest Management Science
  • Simple determination of the herbicide napropamide in water and soil samples by room temperature phosphorescence
    Item type: Journal Article
    Salinas-Castillo, Alfonso; Fernándes-Sánchez, Jorge Fernando; Segura-Carretero, Antonio; et al. (2005)
    Pest Management Science
  • The economic impact of Drosophila suzukii: perceived costs and revenue losses of Swiss cherry, plum and grape growers
    Item type: Journal Article
    Knapp, Ladina; Mazzi, Dominique; Finger, Robert (2021)
    Pest Management Science
    Drosophila suzukii can lead to substantial damages in horticultural production. In this article we analyze revenue losses and cost increases due to D. suzukii as perceived of Swiss cherry, plum and grape growers. Moreover, we investigate associations between farm and grower characteristics and revenue losses and perceived costs increases. We surveyed Swiss growers of cherries, plums and grapes repeatedly in the period 2016–2018 (N = 1572). We find that 76% of cherry, plum and grape growers faced additional costs due to D. suzukii. In contrast, yield losses due to D. suzukii infestation were small on average, but nevertheless high for some growers. We find substantial heterogeneity in perceived costs and revenue losses across crops, years and farms. Larger farms are found to face lower perceived additional costs, suggesting scale effects in prevention and control of D. suzukii. Growers with a higher inter‐varietal diversity perceived additional costs to be higher. Furthermore, organic farming was negatively associated with expected additional costs. Our results suggest that the economic impact of invasive species such as D. suzukii goes far beyond reductions in yield quantity and quality, but rather stems from higher costs due to the need to establish preventive and control measures. Heterogeneity in costs and revenue losses suggests that policy measures to support growers need to be tailored to crops and farm types. Policies supporting improvements of measures against D. suzukii and other newly occurring alien pests and reduce additional costs such as more efficient preventive and control measures merit further encouragement.
  • Host searching and host preference of resident pupal parasitoids of Drosophila suzukii in the invaded regions
    Item type: Journal Article
    Wolf, Sarah; Barmettler, Elias; Eisenring, Michael; et al. (2021)
    Pest Management Science
    BACKGROUND: In its invaded regions, Drosophila suzukii (Matsumura) is a novel host for the community of resident parasitoids of Drosophila. To attain a high parasitization rate on the novel host, the parasitoids have to locate it and accept it in the presence of other Drosophila hosts. We conducted a laboratory choice experiment and a semifield trial to investigate host searching and host preference of the three pupal parasitoid species Trichopria drosophilae (Perkins), Pachycrepoideus vindemmiae (Rondani) and Spalangia erythromera Förster. RESULTS: All three parasitoid species preferred D. suzukii over two common native hosts in the choice experiment. In field cages, most parasitoid offspring emerged from D. suzukii hosts. While P. vindemmiae mainly parasitized hosts in the foliage, most T. drosophilae offspring emerged from pupae presented on the ground. CONCLUSIONS: Both P. vindemmiae and T. drosophilae have the potential to find and parasitize D. suzukii in the field. If released early in the season, possible nontarget effects on native Drosophila should be minimal. © 2020 Society of Chemical Industry
  • Why farmers deviate from recommended pesticide timing: The role of uncertainty and information
    Item type: Journal Article
    Möhring, Niklas; Wüpper, David Johannes; Musa, Tomke; et al. (2020)
    Pest Management Science
    BACKGROUND Precise timing of pesticide applications, as recommended by decision support systems, can ensure crop protection, while maintaining efficient use of pesticides. Yet, farmers often deviate from recommended timing strategies. Here, we assess and explain farmers’ choices to follow or not follow recommendations for the timing of fungicide applications against potato late blight in Switzerland. RESULTS Based on daily fungicide application records as well as regional application recommendations and disease pressure we found that 36% of applications take place earlier than recommended. Using regression analysis, we identified the exposure to economic risks of infection, susceptibility of the planted potato varieties to late blight infections, as well as yearly differences in disease occurrence as the most important determinants of farmers’ application decision. CONCLUSIONS Our results indicate that decisions to not follow application recommendations and apply early are linked to available information and uncertainty with respect to disease predictions. Based on our results, we make recommendations on how to account for farmers’ uncertainty with regard to the timing of pesticide applications in the design of pesticide policies and agricultural decision support systems. These include the use of new technologies and data, mandatory reporting and tailor made taxes and insurance solutions. Although the focus of this article is on late blight in Switzerland, our analysis can easily be extended to other countries and important plant diseases like powdery mildew in grapevines or Fusarium head blight in winter wheat.
  • QoI resistance emerged independently at least 4 times in European populations of Mycosphaerella graminicola
    Item type: Journal Article
    Torriani, Stefano F.F.; Brunner, Patrick C.; McDonald, Bruce A.; et al. (2009)
    Pest Management Science
  • Management strategies against Drosophila suzukii: insights into Swiss grape growers choice
    Item type: Journal Article
    Knapp, Ladina; Mazzi, Dominique; Finger, Robert (2019)
    Pest Management Science
  • A new method to measure EC₅₀ reveals cultivar-specific fungicide resistance and very high diversity within experimental field populations of Zymoseptoria tritici
    Item type: Journal Article
    Talas, Firas; Stapley, Jessica; McDonald, Bruce (2026)
    Pest Management Science
    BACKGROUND Zymoseptoria tritici causes Septoria tritici blotch (STB), the most damaging wheat disease in Europe. In Europe, STB is controlled mainly by fungicides and fungicide resistance is frequently reported. Although fungicide resistance is thought to emerge mainly from standing genetic variation within field populations of Z. tritici, few studies have attempted to quantify the degree of fungicide resistance occurring at the field scale and to measure changes in the frequencies of resistant strains following fungicide applications during a single growing season. Even fewer studies have considered the effects of different wheat cultivars on the emergence of fungicide resistance. We developed a new high-throughput method based on resazurin dye and image analysis to measure the effective concentration of a fungicide that reduces growth by 50% (EC₅₀) values and applied it to 1005 strains of Z. tritici sampled at two time points from 17 different wheat cultivars growing in a replicated field experiment. The experimental field was treated with combinations of five different active ingredients at three times during the growing season. RESULTS We found that field populations of Z. tritici can maintain a very high diversity in fungicide sensitivity phenotypes despite three fungicide treatments, with as much diversity found within a single field during a single growing season as has been described across all of Europe over several years. We discovered that wheat cultivars that were more resistant to STB tended to be colonized by Z. tritici strains that exhibited higher fungicide resistance. We also found that specific wheat cultivars selected for resistance to specific active ingredients, providing the first direct support for the existence of significant host–fungicide–pathogen interactions. CONCLUSION Overall, our findings illustrate the many challenges associated with designing fungicide treatment programs that aim to reduce selection for fungicide resistance when confronted with a pathogen like Z. tritici that has a very high evolutionary potential.
Publications 1 - 10 of 10