I have had the same experience and now i pull weeds by hand 4 or 5 inches around vines and a few times a summer will use my weed wackerPerhaps my experience is colored by the rich soil and crazy fast (moist/hot) growing season. I grew up a bit further north in Michigan and things were not nearly so crazy here. But in Indiana, my experience is that spraying under my vines was one of the worst decisions ever. By eliminating the grass, weeds had free reign and I was constantly struggling to control them. I guess if the vineyard were my job it wouldn't be an issue as I'd always be on top of it.
To this day, in the two rows I started first and most aggressively eliminated grass, I'm paying the price as the grass competes its way back.
Now I just mow close and go through with a trimmer a few times a summer. Life is easier than spraying, ironically. I can dedicate my sprayer efforts to fungus.
LOL. No, never.....I hope you don't girdle your vines using a gas powered trimmer. If you continue this process place wax milk cartons or grow tubes around the base of the vines. Good luck!
That is an excellent way to keep the weeds and grass controlled in a small hobby vineyard, however it is impractical at the commercial scale.Why use any kind of poison around your grapes? If you can't live with the weed do what i do and use a weed wacker. I stop at least 6 inches from the trunks. If you can't judge 6 inches maybe you should not be using any kind of power tools. When i finish weed wacking all my vines I go back to the beginning and pull the weeds that are next to the trunks by hand. Lets be honest you only have to do it 3 maybe 4 times a season.
I would say rather, "it depends" on the total economics involved.That is an excellent way to keep the weeds and grass controlled in a small hobby vineyard, however it is impractical at the commercial scale.