Posted on 06/16/2008 6:47:04 PM PDT by Clive
Just NB that on hot days, 2,4-D can (and does) turn to vapor and drifts on the wind.
I’ve sprayed 2,4-D on weeds (we’re talking farm-scale spraying) and by evening, alfalfa fields 1/2 mile away were showing the effects of 2,4-D vapor.
If it were my situation, I’d strongly recommend spraying 2,4-D (especially the ester formulations) just before dark, when the winds and temps go down. You’ll still get good weed control, but you might keep your trees and ornamentals.
FYI, there are actually two herbicides in most lawn care products: 2,4-D and dicamba. Without the dual mode, you won’t be able to get rid of dandelions. Dandelions are some of the toughest weeds to kill with a single herbicide. Dicamba has some soil residual activity and is what finishes off tough broadleaf plants in lawns after the 2,4-D has “softened” them up a bit.
Yes, that problem began to show itself in the late 70’s.
I haven’t farmer for over 20 years, but I still remember the weeds turning over after just a few hours with 2,4,D.
They certainly do, especially in hot weather. If you use enough 2,4-D, it actually disrupts the cells walls in the plant tissue. For some weeds, this causes them to come back, because the top of the plant is burned off before the herbicide is translocated to roots.
The herbicide I liked the most for fast results is paraquat, or “Grammoxone.” In 10 minutes, you can see plants wilt. It is like a chemical flamethrower.
No foam marker needed.
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