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From Twitter

06 September 2023
We thought it would be useful to update the list of P. japonica host plants. In this respect, the dataset deposited by Tayeh et al. (2023) serves two purposes: (1) to provide a list of the host plants of Popillia japonica via a comprehensive review o...
29 August 2023
Citizen Science
Pest management
Regulatory reporting  of invasive alien species or controlled pests such as the Japanese beetle to national authorities can be challenging for citizens. Therefore, in the IPM Popillia Horizon 2020 project, the "Automated Reporting System" (ARS) ...
26 July 2023
Pest management
Europe is facing the first Japanese beetle outbreak north of the alps. The phytosanitary service of Zurich in Switzerland has detected Popillia japonica in monitoring traps and on herbs and shrubs in an area close to the airport of Zurich. The delimi...
JHMU771_20221114-201000_1 Working in the field with the Swiss Alps in the background

The Big Field Experiment

In September 2021 we started the big field experiment in the Piedmont region, a highly infested zone. Giovanni Bosio from the plant health service of the Piedmont region found meadows which were not treated yet and with willing owners to let us do experiments with different biological control agents (BCA).

We treated the meadows with 2 different strains of fungus, 2 different strains of nematodes and of course a control treatment. This experiment was carried out by team Agroscope and team Crea.

In the fields we count the number of larvae and take soil samples back to the lab to verify if our biological control agent is still present. We did this before treatment (September 21), after treatment (November 21) after the winter (April 22) and then yearly in November.

Over all we have:

  • 3 big fields
  • 6 different treatments
  • 10 repetitions
  • 9 holes per plot
  • 18-20 people

This equals in a total of 1'620 holes which we need to dig up and check thoroughly (or ~90 holes per person).

As the year is slowly coming to an end, we met once again on the field. 

Team Agroscope had their lunch directly on the field, which also allowed time for siesta.

Work always needs to be fun. And we usually have a lot of that!

This undertaking is not only a combined experiment between two research groups, it has become a lot more. What started with a collaboration has turned into friendship. 

And since most of us are entomologist, we are not only interested in the Popillia larvae.

Open- day at CREA
A review of the progress made by PESSL III

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 EU Flag This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 861852