Round up
 

I have picked out a couple smaller plot sights that I want to get ready for a fall planting. However they are in spots where you could never reach them with any type of serious tillage equipment. Instead I'm just going to spray it a couple times with round up to kill the weeds, clear off the dead stuff and then broadcast the seeds. my question is how heavy am i supposed to apply the round up? is there a general rule of thumb that says to apply x number of gallons/acre?

RE: Round up
 

It will come with a mixing instructions booklet, but typically 2 quarts per acre is normal.

RE: Round up
 

You're probably going to spray it with a 2 gallon pump sprayer or maybe a 4 gallon pump sprayer. Mix your Roundup at 2%. (that's assuming you're using a 41% glyphosate concentrate). That's roughly 2.5 ounces per gallon, or 5 ounces in your 2 gallon sprayer, or 10 gallons in your backpack sprayer. While you are at it, mix some nitrogen in with the herbicide. It'll make the gly work better, and it'll help your food plot when you plant it. Ammonium nitrate, ammonium sulphate, or even straight ammonia. I used to mix epsom salts with household ammonia and some dishwashing detergent when making a batch of gly.

RE: Round up
 

I will be spraying it with a two gallon pump sprayer. Once i have the two gallons mixed correctly, how much of that mixture should i apply per acre?

RE: Round up
 

You would be filling the tank multiple times for an acre, but since you’ve not said how much you’ll be doing, it’s impossible to say how much you will use. Just mix at 2.5 oz per gallon of water and repeat until done. You don’t have to soak the grass.

RE: Round up
 

thanks for the info Magis. I figured it would take me a few tank fulls to do these areas. I haven't had a chance to measure how bit they actually are probably only 1/2 to 3/4 of an acre each. Prob going to take a little while with that little two gallon sprayer but I'm trying to put these thing in on a somewhat reasonable budget haha. Once they are sprayed about how long would you wait before you tried to clear the dead stuff? like a week or so? when can you apply the lime after the field is sprayed?

RE: Round up
 

We have 1/2 acre of food plots on our land and we usually use about 9-10 gallons. I also mix it about 3-4 times stronger than the recommended mix. For my plots, it usually takes about 3 weeks for everything to be dead, after 1 week the grass will start turning a little yellow, 2 weeks the grass will be dead, but for the thicker weeds and underbrush it may take a full 3 weeks to kill it all. Once everything is dead its pretty easy to clear. As far as putting lime down, it should be put down 6 months before planting, it won't do any good if you put it down right before planting.

RE: Round up
 

I would agree, a minimum of three weeks for a good kill. Longer is better, but I mix at the normal rate and I like tobe certain that the roots are dead.

RE: Round up
 

Apply enough to cover all the leaves and blades of the vegetation that you are trying to kill. You do not need to apply it to the point where it will run off, that's too much.

RE: Round up
 

I mix 3oz to a gallon with a bit of dishing washing liquid. Works good.

RE: Round up
 

what's the dish washing liquid for gregrn?

RE: Round up
 

If you are using 41% Glyphosate, you need 6.24 ounces per 1 gal. to get a 2% concentration

Gmil6184, If you can not find 41% Gly at your local co-op or feed store for less than $41.95 per gal. or $86.95 for 2.5 gallons, here is a site http://www.keystonepestsolutions.com/index.php?main_page=index&cPath=9

RE: Round up
 

What makes namebrand roundup better than the generic glyphosate's is it has a very good surfactant in it. Adding dishwashingacts as a surfactant in thegeneric glyphosate. It makes it stick to the plants better for a better kill.

RE: Round up
 

Thanks for the help haystack and gregrn, going generic and using a little dishwashing soap sounds like the trick

RE: Round up
 

gmil6184 Some of the generic Glyphosates do have a surfactant, such as Strikeout Extra and it will work as is. But additional surfactants/adjuvants will help aid the Gly and shorten kill time. Dishwashing soap can be and is used, however Gly is somewhat sudsy/foamy and I prefer to use AMS (Ammonium Sulfate) its a form of nitrogen and works well. I use a tank sprayer and add 4lbs of AMS per 25 gallons. In your case, it would take aproximately 5ozs in 2 gallons of water, along with Gly.

I use quite a bit of Gly+AMS and see results fairly quikly, at 2 qts per acre. A lot depends on the weather though.

Here's a few pics of a Gly+AMS "Burndown"

This field was sprayed on 5/11/09, and you can see some signs of dieing already.


And here's what it looks like 8 days later, only a few tuff weeds still have a bit of green showing, but they will be history by next week.




Be sure to read and follow the label/MSDS. Used corectly it's hard to beat in fields and food plots.

RE: Round up
 

I know I'm no math wizard, but that's not correct.;)That would be closer to a 5.5% solution.

RE: Round up
 

I'm certainly no math wizard either, I must rely on a calculator. And actually your 5.5% is incorrect, it should be 4.88%;)

I converted a 41% concentrate to 100% 128ozs = 1 gal.......128 x 0.02 / 0.41 = 0.0624

We was talking about a HH-HV sprayer or hand held/ high volume. The above concentrate is for HH-HV only, big difference between that and a CDA/ Controlled Droplet Application sprayer, which is much easier to apply 2 quarts per acre precisely.

On page 41 of a Gly4 pamplet it recommends a 5% solution for Annual and Perennial weeds when using a HH and why. The 6.24 concentrate is actually less than what is recommended, if you was thinking that I mixed to hot.

RE: Round up
 

My farmer friend told me he used one gallon to 100 gallons of water and he farms a few thousand acres of corn and soybeans. That comes out to 1.28 onces per gallon, I use one ounce to a gallon and that works for me.

RE: Round up
 

For a fall plot, you usually do not need to spray. When were you thinking about planting and what were you going to put in it?

RE: Round up
 

The 5.5 was just a guess, and I wasn't saying thatyou were absolutelywrong about the mixture,just that 6.24 oz. per gallon wasn't a 2% mix of 41% gly. If there's one thing I've found, it's that you don't have to be absolutely precice when trying to nuke everything. Coalcracker is only using 1 oz/gal and having success, which is much less that I would have thought to try.
I think that may depend on where you're from. Around here grasses like fescue, orchard grass, rye grass, and timothy will take over in no time.

RE: Round up
 

What do you guys use to clear all the dead plants? The areas i want to plant aren't accessible by tractor and I don't have any four wheeler tillage equipment. So I was going to no till the plot by spraying all the weeds and grasses, clearing the dead growth and then broadcasting over the then bare soil. I was thinking about a drag harrow but they are a couple hundred bucks. I was thinking about maybe trying a pull behind thatcher rake, you can get one at Sears for under a hundred bucks. I was wondering if you thought that would work.