Regardless of the validity (and I have *not* examined these studies) of the EPA decision, it does seem strange to spray for potential fungus/fungi attack when such has/have not been clearly identified.
Any defensive device, whether "organic" or "toxic" or "other," is best wielded toward the appropriate attacking agent.
For example: aphids <== jets of water, soap spray. A fungus deterrent wouldn't do any good.
I'm just about ready to plant morning glories on my south property boundary, all 6 feet or so of it, and let the morning glories and lavender (my side) sprawl where they may over my neighbor's Bermuda grass, Yellow Star Thistle, and other burr-, spike-, and sticker-bearing invasives. She has an illegal duplex and rents out the front while living in the back. The previous tenants used a weed whacker to drive Bermuda grass, Yellow Star Thistle, etc. onto my weed- and thistle-free soil. The new one uses a POWER MOWER to do the same.
So...it may just be morning glory time. It's been 13 years. Granted, for 10 of those years I was unable to garden, but I've always removed the YST and burr plants due to the danger they pose to dogs and cats (previous cats were indoor/outdoor; current cats are indoor only).
You can send those morning glory seeds this way if you don't want them.
Sunset Zone 17, USDA Zone 9