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Weed kill in RR Beans

C

Curt Cooke

Member
A few acres of my beans were sprayed a little late. The weeds were farther along than I liked. After 1 week it seems that the progress is slow and some weeds seem unaffected. Are these things going to die or not? Do I have a "next move"? How long do I now wait to do anything, if there's anything to do? I'm new at this.
 
I sprayed a fence line with RU. A week later thought I was going to have to do it over because some weeds seemed to be unaffected. Didn"t get back to check it for a couple of weeks and now everything that got sprayed is dead.

Hope you get the same outcome.
 
who ever sprayed should have took into acc. how big the weeds where so you got a good kill, this is how weeds become emuned* to roundup , its gettint to be a bigger problem then 1 might think
 
It depends on how strong a shot of Roundup was used. 32 ounces/acre of Roundup Weathermax with a surfactant/conditioner should make big broadleaves sag within a day or two. Grass will stay green for several days or a week. Weaker doses of Roundup will be slower to kill and might even lead to Glyphosate resistance if it just wrinkles the weed but doesn't kill it. Jim
 
Jim, I see on the sheet that 32 oz. of Roundup PowerMax was used along with 8-0-09S and 5-10-27 Micro. I understand the 5-10-27 but I don't know what the 8-0-09S is.
 
If you are using a spot sprayer on a 4 wheeler uaing a wand, 16 ozs RU to 10 gals H2O works well.

Gordo
 
If you are using a spot sprayer on a 4 wheeler uaing a wand, 16 ozs RU to 10 gals H2O works well.

Gordo
 
Bigger weeds take stronger rate & longer time to see results. Hope you mixed strong enough.

Some weeds are becoming resistant what kind are not dying, how strong did you mix?

--->Paul
 
Was some kind of foliar fertilizer used as a replacement for the surfactant? Just a question that entered my mind. I certainly don't know all of the options. I'm guessing Powermax has a different rate of Glyphosate per ounce than Weathermax, kind of like comparing 4 pound 2-4D to 6 pound 2-4D. (sigh) Life used to be so simple. Jim
 
it'll be fine. just don't get excited. been using it for 20yrs, i got real nervous when i started also. all it did was get me all riled up. never have had to respray.
 
Glyphosate, RoundUp, slowly starves a plant of an important protein, whereas Organo Auxins (2,4-D,; tryclopyr; and the rest of that that family make the plant "grow themselves to death" That's why you see the curling-up pretty quckly in hot temps. Moral of the story, make sure you are using the proper surfactant (never dish soap, I dont care what others might say, it's totally wrong for use with herbicides, anionic versus non-ionic that nearly all herbicide labels call for, and more expensive oz per oz than a quality surfactant), condition the water if its got high pH, and addition of nitrogen nearly always improves glyphosate's efficacy. Let them starve to death!
 
It depends on what type of weeds you have and how big they are. Grass is an easy kill with Roundup. If you had tall horse weeds than you might not get them. They are hard to kill with straight RU when they are big. Many vines are not affected by RU. So we need a little more info on what kind of weeds and how big.
 
Thanks JD. I walked it last night and it appears as if it's lambsquarters (I think). The younger ones are clearly going to perish but the big ones appear reasonably healthy. It's encouraging to see that they have a yellow leaf on them which would seem to indicate that they will eventually go but right now it's ugly.
 
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