Glyphosate question

[redkneck]

Haven't mixed any in a couple of years. How many ounces are you guys mixing to the gallon for general weed killing? I picked up 2.5 gallons of 41% this week and need to do a little clean up around the house, barn, etc.

[wtnhunt]

I usually use between 3-4 ozs per gallon depending on what I am using it on. For spot spraying around posts a lower concentration does fine, for using the spray boom on the 4 wheeler use a higher concentration due to coverage not always being as good.

[Tominator]

2 ozs. if it's over fresh tilled stuff. 3 to 4 if it's fresh growing stuff, 6 if I really want to kill it.

[redkneck]

I mixed up a 3oz/gal solution day before yesterday and sprayed around the fence. I guess I was kind of expecting some results by now. I'll give it till sunday to see if it took.

[wtnhunt]

I mixed up a 3oz/gal solution day before yesterday and sprayed around the fence. I guess I was kind of expecting some results by now. I'll give it till sunday to see if it took.

Unless you got the fast acting roundup/glyphosate it is probably not warm enough yet, at least not here anyway, to see next day results. No doubt at that rate though you will see results soon, especially if it is warm and dry there. I sprayed our garden spot with a 3.5 oz glyphosate and 3 oz 2 4d per gallon and it took over a week before it started to yellow. Now that temps are reaching over 80 here everything I sprayed is finally all toast.

I have used glyphosate in the middle of the day during the summer at 3 oz per gallon rates and seen it start to yellow the very same day. Heat and dry really makes a difference in how fast the stuff works.

[dogdoc]

i also always get good kill rate at 3oz/gallon

[redkneck]

I always liked to spray in the heat of the day when the plants were more stressed and it always seemed to me that the stuff stuck better too. I sprayed this late and a lot of it just beaded up and rolled off. I'm sure some will die. I also like to add a little dishwashing liquid to make it stick better. I was just double checking to see if I had made it up right, I was thinking it should be brown by now.

thanks guys.

[Tominator]

There's a study out there on the web somewhere that listed the optimum time to spray roundup. As I recall it was 1 p.m. with the earliest you should put it on for maximum results being 10 a.m. Past 4 p.m. and before 8 a.m. and your results could be drastically diminished. You should apply that stuff on calm, warm sunny days.

[wtnhunt]

There's a study out there on the web somewhere that listed the optimum time to spray roundup. As I recall it was 1 p.m. with the earliest you should put it on for maximum results being 10 a.m. Past 4 p.m. and before 8 a.m. and your results could be drastically diminished. You should apply that stuff on calm, warm sunny days.

Yep. Best time to spray early afternoon.

[redkneck]

Well I've never had it not work by the 3rd day. If this crap aint brown tomorrow I'm taking it back to the co-op.

Question. We all know how round-up smells, do the generics have the same smell? I've used some generics before that did, but this stuff is really odorless. It's got me wondering. I even sprayed some of the same stuff yesterday again to make sure it was saturated.

[wtnhunt]

Well I've never had it not work by the 3rd day. If this crap aint brown tomorrow I'm taking it back to the co-op.

Question. We all know how round-up smells, do the generics have the same smell? I've used some generics before that did, but this stuff is really odorless. It's got me wondering. I even sprayed some of the same stuff yesterday again to make sure it was saturated.

All I have used for years has been the generic stuff, some of it does seem to work a little better than others. Never really paid much attention to the odor to know of a difference.

[PremiumBeef]

We use 16-32 oz. per 10 gallons in our sprayer for general agriculture use, and we go through alot of it. The amount you use will depend on a few things, but the most important components are the number/type of plants you are looking to kill and what type of glyphos you are using. If you are using a generic I would hold closer to the 3 oz. per gallon, but if using the RoundUp WeatherMax then I would feel safe backing down to 1.75-2 oz. per gallon. Grass tends to be tougher to kill than broadleaves, so again if in grass I would up the rate. Another thing to think about is the use of a surfactant to help the uptake of the spray into the plant you are looking to kill. Last, If you have a mixed bag of plants with grass and broadleaves, it sometimes works well to combine glyphosphate with a broadleaf selevtive such as amine 2-4D. Hope this helps.