Efficiency of pheromone traps for monitoring <i>Diabrotica virgifera virgifera</i> LeConte

Schaub, Lukas; Furlan, Lorenzo; Tóth, Miklós; Steinger, Thomas; Carrasco, L. Román; Toepfer, S.

doi:10.1111/j.1365-2338.2011.02452.x

Cited by 7 publications

(8 citation statements)

References 30 publications

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“…Our study thus shows that soil pest density did not correlate with official (aerial) pest monitoring. The main reason for this lies in the pheromone's pest attraction in the mid to long range [64]. We also assume that a certain proportion of adults could have died on the soil surface and in the maize canopy before they were caught on the unbaited yellow sticky traps in the cages, while some were washed away by the rain, decomposed, or were not stuck to the traps due to dirt accumulating on the traps.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the Field Efficacy of Heterorhabditis Bacteriophora Poinar (Rhabditida: Heterorhabditidae) and Synthetic Insecticides for the Control of Western Corn Rootworm Larvae

Modic

Žigon

Kolmanič

et al. 2020

Insects

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The western corn rootworm (WCR), Diabrotica virgifera virgifera LeConte (Coleoptera, Chrysomelidae), is an important insect pest of maize in North America and Central and Eastern Europe. In Central Europe, the larvae emerge in May and its three instars feed intensively on maize roots in June, causing plant lodging that leads to a loss of economic yield. A three-year field experiment (2016–2018) was conducted to compare the effectiveness i) of soil-applied granular insecticide based on the active ingredient tefluthrin, ii) of maize seeds dressed with thiacloprid, and iii) entomopathogenic nematodes Heterorhabditis bacteriophora Poinar (Rhabditida: Heterorhabditidae, product Dianem) against WCR larvae. An additional treatment with alcohol ethoxylate (i.e., soil conditioner) mixed with entomopathogenic nematodes was performed in 2017 and 2018 to check for any increase of entomopathogenic nematodes’ effectiveness. Field tests were carried out in two fields infested naturally with a WCR pest population, one in Bučečovci (Eastern Slovenia) and the other in Šmartno pri Cerkljah (northern Slovenia), exhibiting dissimilar pedo-climatic conditions and soil pest densities. The treatments were performed in five replicates per experiment in each year. The efficacy of the treatments was very similar at both locations, despite the approximately five-fold lower WCR soil pest densities in northern than in eastern Slovenia, as well as being constant over time. The largest number of WCR beetles was observed in the negative control, followed by that of beetles subjected to thiacloprid treatment (insignificant decrease taking into account the entire three-year dataset). Treatments with tefluthrin (44.1 ± 11.7%), H. bacteriophora (46.2 ± 7.4%), and H. bacteriophora + alcohol ethoxylate (49.2 ± 1.8%) significantly decreased the numbers of emerging beetles. Treatments of thiacloprid, H. bacteriophora, and H. bacteriophora + alcohol ethoxylate additionally led to significantly increased maize plant weights. Furthermore, entomopathogenic nematodes were able to persist in maize fields for almost five months at both experimental locations in silty and sandy loam soils. It was concluded that the control of WCR larvae in maize using the entomopathogenic nematode H. bacteriophora is as effective as a tefluthrin treatment, and could thus offer a sustainable Diabrotica v. virgifera biological control management option in Europe.

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Section: Discussionmentioning

confidence: 99%

Evaluation of the Field Efficacy of Heterorhabditis Bacteriophora Poinar (Rhabditida: Heterorhabditidae) and Synthetic Insecticides for the Control of Western Corn Rootworm Larvae

Modic

Žigon

Kolmanič

et al. 2020

Insects

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“…Baited and non-baited traps are available to monitor WCR population levels (Schaub et al 2011 ). The most widely used non-baited traps include yellow sticky traps, and they are readily available from various manufacturers.…”

Section: Case Studies Of Alternative Pest Management In Maizementioning

confidence: 99%

Alternatives to neonicotinoid insecticides for pest control: case studies in agriculture and forestry

Furlan

Kreutzweiser

2014

Environ Sci Pollut Res

107

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Neonicotinoid insecticides are widely used for control of insect pests around the world and are especially pervasive in agricultural pest management. There is a growing body of evidence indicating that the broad-scale and prophylactic uses of neonicotinoids pose serious risks of harm to beneficial organisms and their ecological function. This provides the impetus for exploring alternatives to neonicotinoid insecticides for controlling insect pests. We draw from examples of alternative pest control options in Italian maize production and Canadian forestry to illustrate the principles of applying alternatives to neonicotinoids under an integrated pest management (IPM) strategy. An IPM approach considers all relevant and available information to make informed management decisions, providing pest control options based on actual need. We explore the benefits and challenges of several options for management of three insect pests in maize crops and an invasive insect pest in forests, including diversifying crop rotations, altering the timing of planting, tillage and irrigation, using less sensitive crops in infested areas, applying biological control agents, and turning to alternative reduced risk insecticides. Continued research into alternatives is warranted, but equally pressing is the need for information transfer and training for farmers and pest managers and the need for policies and regulations to encourage the adoption of IPM strategies and their alternative pest control options.

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“…Perhaps the reported constraints of the efficiency of pheromone traps by Schaub et al. () must be taken into consideration.…”

Section: Discussionmentioning

confidence: 99%

“…Diabrotica virgifera virgifera starts to disperse especially for long-distance dispersal if the population abundance exceeds a certain level. Perhaps the reported constraints of the efficiency of pheromone traps by Schaub et al (2011) must be taken into consideration.…”

Section: Discussionmentioning

confidence: 99%

Costs and benefits of plant health measures against Diabrotica: experiences and estimations for Germany

Kehlenbeck

Krügener

2012

J Applied Entomology

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Diabrotica virgifera virgifera has been found in Germany since 2007, and mandatory EU plant health measures must be applied. To evaluate information on the appropriateness of these measures, we analysed benefits and costs for the two control strategies eradication and containment by ex ante data estimations and observed experiences. As a ‘no official control’ scenario, we considered that maize is grown without plant health measures where growers start to apply insecticides 5 years after D. v. virgifera damage becomes obvious. The eradication strategy consists of crop rotation with additional insecticide treatments, and the containment strategy assumes crop rotation (two times maize within 3 years) or insecticide applications against adults (two applications per year). Spread of D. v. virgifera was calculated over 15 years based on the model of Baufeld and Enzian (2005, Symposium Proceedings No. 81: Introduction and Spread of Invasive Species, 149–154), and corresponding costs for the estimated accumulated areas were analysed. Additionally, the observed spread from 2007 to 2011 in Germany and resulting costs were compared with the estimated costs of the simulated ex ante scenarios. Eradication by crop rotation proved to be the most cost‐effective strategy for single outbreaks and a low maize density in the safety zone. In contrast, both containment strategies led to a moderate cost‐effectiveness whereof crop rotation is expected to be the more sustainable approach leading to less environmental impacts and resistance problems in the long term. Observed data showed that the range expansion of D. v. virgifera in Southern Germany was more rapid than expected from the low beetle numbers of the pheromone trappings leading to the assumption that both long‐distance dispersal and continuous short‐distance diffusion are involved. The observed average spread rate per year from 2007 to 2011 was estimated at 30 km. In Bavaria, the containment zone comprised in 2011 about 210 000 ha of maize production leading to much higher containment costs compared to the ex ante simulations.

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Efficiency of pheromone traps for monitoring Diabrotica virgifera virgifera LeConte

Cited by 7 publications

References 30 publications

Evaluation of the Field Efficacy of Heterorhabditis Bacteriophora Poinar (Rhabditida: Heterorhabditidae) and Synthetic Insecticides for the Control of Western Corn Rootworm Larvae

Evaluation of the Field Efficacy of Heterorhabditis Bacteriophora Poinar (Rhabditida: Heterorhabditidae) and Synthetic Insecticides for the Control of Western Corn Rootworm Larvae

Alternatives to neonicotinoid insecticides for pest control: case studies in agriculture and forestry

Costs and benefits of plant health measures against Diabrotica: experiences and estimations for Germany

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