Petzi:
I don't want to grow sterile hybrids. My thing is to grow plants I appreciate and sometimes think that others sometimes appreciate for its historical value and sometimes more for quality and yield.
Sweden has problems with mixed PVY but compared to several other European countries the level is medium-low.
The darker green area where PVY is most commonly (the red point is my location):
View attachment 29099
There are mainly two reasons why PVY is a concern in Swedish potato crops (Sweden is no tobacco producer so I can't tell how bad pvy are in big tobacco plantage).
Firstly, we have a limit value of 10% PVY infected seed potatoes (the country has major problems even coping with this limit value).
The second problem is the aphids that spread the infection from infected plants to healthy ones. This is unfortunately a small problem I potato (and tomato plantations) men in the tobacco it can be en gulfoilspill.
2010 was the first time Sweden had a mass innovation of German or Polish aphids of the same type that Europe has the greatest concern with (Acyrthosiphon Chaetosiphon fragaefolii). It has never been found in Sweden before but can now be here to stay.
Unfortunately, the climate that for us hobbyists is very favorable is also favorable for this little bastard creature. Which so far "only" has been found in these areas in Sweden (the areas around the orange points):
View attachment 29100