Verticillium nonalfalfae hop strains(VERTAH)
Distribution details in United Kingdom
Current pest situation evaluated by EPPO on the basis of information dated
1993: Present, restricted distribution
From NPPO: Present, restricted distribution
Reporting Service 521/03 of 1992-03: the regulatory status of verticillium wilt of hop in GB has recently changed, to reflect the fact that continuous variation in aggressiveness is now recognized, rather than division into two distinct groups of strains - "progressive" and "fluctuating", the former restricted to south-east England and the latter occurring also in the West Midlands. Eradicative measures and restrictions on cultivar use have been withdrawn, but regulations on healthy planting material and on movement of used hop poles and picking machinery are maintained.