Sterilizing soil with plastic & solar heat

I sent this to our master gardener group but it “might” be useful to folks
on this list who live in areas with sunny hot summers. There are a total of
three of these I will send but you can delete them if this is not something
that will work in your situation. This might apply to raised beds further
north where you could dig up daffodil bulbs and then solarize or use some
sort of steam, hot water or other forms of heat to reduce pathogens.
Individual Nematode species are REALLY difficult to identify correctly. KK