I don’t have garden rows per se, but I do have tomatoes, which are very sensitive to glyphosate. I do spray around the tomatoes, but do so only when there is no wind and use a very coarse spray with the pump up, and keep the wand very close to the weeds I want to kill. If weeds are really close to tomatoes, I actually dribble a little bit of the spray on those weeds to make sure no mist or droplets get on the tomatoes.
I think you can take care of the weeds between the rows, if you’ve gotten behind, but just make sure there is no wind, use low pressure on the pump up sprayer, and keep the wand very close to the ground. Be on the lookout for any spray mist or splash up.
If we are doing delicate spraying like that, many times we will keep a 5 gal. bucket of fresh water handy, and if we think we’ve gotten some glyphosate mist on a plant/tree, we immediately douse it with the fresh water. When we do that, we’ve never seen any negative side effects of the glyphosate.