I am new to the board, but have been growing my own sang for years. Last year I had a sever issue with what appears to be Alteria blight and possible root rot in the bed I use for producing seeds. I have found fungicides that can be used on the web, but I cannot find where to buy them. Do any of you know where I can find the fungicides below or possible alternatives? Thank you, Matthew.
For the Phytophthora Leaf Blight and rot:
Aliette - 80% fosety-al (cannot be used with copper compounds)
Ridomil Gold GR or Ridomil 2E
I would recommend both of those (depending on label/state of course) for Phythopthora. I would suggest Aliette over Ridomil. Also, you can only apply Ridomil three or maybe four times per season. So use Aliette, and in a week Ridomil...and if the problem persists go back with Aliette again.
Normally, for small volume purchases like most ginseng growers on our scale are, you will need to find a small equity or feed mill type of place that is willing to order a single package. Most of the bigger places will not break cases. I think Aliette is four bags per case and anywhere from $90-135.
Sometimes you can find stuff online (ebay, amazon, etc).
I talked to an old timer a few weeks back he suggested a dithane/captan mix with a few drops of antibacterial ivory dish soap has worked for him 25+ years of growing. Also I brought up r ridomil he said also that's good but its pricy 80 bucks a bottle he suggested the dithane/ captan mix and only if needed use ridomil summer application and if you need another switch back to r idomil/captan back and forth etc.. I have never use anything for my ginseng in the woods but ran out of room and opened up 1 acre this year for seed production in raised beds so will see. Scott Persons ginseng book is a good read it mentions your concerns the books 30 bucks on ebay. I spent 25 dollars for what I need this year and one bottle of ridomil if needed in summer 80.00
All I can say without info in front of me, is to follow the label directions. If memory serves, I think the rate is 5lbs per acre in 100 gallons minimum of water. You have to just work it down from there...unless you can find someone who has already done that for you and made it available someplace on the web... *cough*