I finally found some stuff that will work,I spoke with an older lady that puts out 5 acres of tators each year and sells them at the local farmers market. She buys "Admire" from Southern States and sprays it in the furrows and then puts her seed tators in and then covers them up and thats it. She said it is high but it works,78 bucks for a quart but you mix it with water.
She said for a normal garden a quart would lasts serveral years.
So in the long run it would be cheaper than the dust that doesn't work.( I put on 20 bucks worth of dust last year for only 50 pounds of seed tators.
Hope this helps the tators gardeners.