5.6
CBCVd-Monitoring 2020
Sponsor:
Bayerische Landesanstalt für Landwirtschaft, Institut für Pflanzenbau und Pflanzenzüchtung (Bavarian State Research Center for Agriculture, Institute for Plant Production and Plant Breeding)
Financing:
Bayerisches Staatsministerium für Ernährung, Landwirtschaft und Forsten (StMELF) (The Bavarian State Ministry for Food, Agriculture and Forestry) Erzeugergemeinschaft HVG
(Hop Producers Group) Project Management: S. Euringer, Dr. D. Kaemmerer (IPS 4b) Team:
IPZ 5b, IPZ 5a, IPS 4b, IPS 2c
Sampling Period:
06.2020 to 09.2020
In the 2020 crop year, CBCVd monitoring was carried out in all German cultivation areas. The implementation and intensity of the measures were adapted to the size of the cultivation area and to local conditions. No infestation was found in Spalt, Tettnang, Elbe-Saale. The results of the Bavarian CBCVd Monitoring 2020 are presented below. Table 5.3: Classification of CBCVd-Monitoring, 2020 Classification of CBCVd-Monitoring, 2020 Monitoring of cultivation regions with infestations
Plots
Samples
Risk-based
422
Grid
117
Sum
539
HVG Biogas monitoring
~ 1760
65
195
Voluntary Monitoring (HVG)
~ 15
~ 45
Plots of newly infested farms (2020)
~ 40
~ 300
~ 656
~ 2300
Sum
Farms
~ 400
Table 5.4: Classification of CBCVd-Monitoring, 2020 Farms
Infected Region
Infection Detected [Year]
Severity of Infection
5
Hallertau Central
2019
Low to very high
1
Hallertau South 1
2020
High
1
Hallertau South 2
2020
Low
The following findings were generated by CBCVd-Monitoring in 2020: •
Despite a risk-based approach and a massive effort, “only” four additional farms in three infested areas could be identified → Hallertau is not (yet) contaminated!
•
The severity of the infestation in the farms affected ranges from low to high
•
Within a farm, the spread (without a mitigation concept) can progress very quickly 61
