Look at the concentration of glyphosate. If it is the same as the Super Concentrate then use the same mix ratios.

Consider using generic Roundup next time. Monsanto's patent ran out years ago. I picked up 2 1/2 gal of glyphosate concentrate at Lowes for $79.

Zeuspaul

simple, they will list how many galloons of mixed product per acre with X amount of the RU in it. divide it down to get the per gallon rate.

for example, i have a couple gallons of malathion that says to use 1.5 quarts per acre. then it says to use something like 100 gallons per acre(not exactly what it says but you get the drift). so you use 1/100th of 1.5 quarts per gallon. like i said, these are not the exact numbers it gives, but just an example.

BTW, i usually buy generic RU from a guy on ebay. costs about 90.00 shipped for 2.5 gallons. i get roughly 300 gallons of finished product out it.

I use 1 1/2 oz per gallon for the generic "RU" brand.

Thx for the responses. I guess my question is how does this product compare ounce to ounce to the super concentrate. The directions for the Weathermax has different ratios for different crops from sugarcane to soybeans - a bit confusing. It says for one crop, to use 14 oz per acre. That means my 2 1/2 gallons would cover 23 acres??? Wow. That sounds like it alot more powerful than super concentrate...The super concentrate RU had one ratio for just weeds and then one stronger one for grass and weeds. I would make an extra strong mix for horsetail,wild grape etc. But based on the key ingredient, it sounds like the Weathermax RU might only be 10% stronger than the super concentrate RU. I was just curious if anyone had real hands on experience with this product.

my gosh.. where and why are you guys spreading all this poison everywhere?

RoundUp is mostly safe...low residual level...and if you're taking care of more than a few beds or you're disabled/elderly it's nearly essential in some areas.

You can't lump things like DDT and Roundup together. Not all poison is across the board evil, just like all things natural aren't good for you.

A lot of eco-minded people use it to control their environment. A lot of people also use RoundUp when they don't need to, such as taking care of small weeds in cracks in concrete when some simple boiling water poured over the weed has the same effect.

It's good stuff. Too bad the people who "own" it aren't our friends. That's the biggest downside to me.

For instance...Tree outside, aged, and nearly grown to the top with a VERY healthy ivy "vine" (more like a small tree).

1.5oz. of roundup mixed with a gallon of water applied at the base of vine...no more vine...tree stays healthy.

Now, I wouldn't reccomend everyone go out and attack english ivy this way at all. This was a very established/old tree that can handle that much RoundUp whereas the ivy choked and died. This situation done manually would have taken weeks to choke off all the small system of feeders and cutting it off "at the base" was impossible.

A few minutes of "work" and its done verses hours/days or work...waiting to see if i got everything...then constantly watching what's left of the vine to make sure it doesn't take over the tree again.

That's an able-body'd application, anyway.

If the % of active ingredient isn't the same then the application rates are different.

The deal on RU and glyphosate in general is this: Glyhposate is a fairly benign chemical. Fairly. But the larger issue is that more than half the product is comprised of "inert ingredients" many of which you can assume are less benign. If you have RU with warnings about applying near water sources its due to these "inert ingredients". They're listed as inert because they have no direct method of action on weed control but that doesn't mean they have no toxicity.

Another issue to consider is that over application of glyhposate has lead to several cases of resistance. Officially in my state two "weeds", water hemp and ragweed, have developed resistance in just the last four or five years and that resistance has spread across the mid-west quickly.

None of which makes it a "good/bad" product. It certainly works as advertised but it comes with a little more baggage than people often think.

I use the generic Gly-Star on my field crops which is 41% and sells for around $14 a gallon. Look in the back of the label booklet and you should find a breakdown for small spot sprayers. Its usually 2% so you add roughly 2-2.5 ounces of roundup to a gallon of water... Bob.

WOW THAT IS A GREAT PRICE. Where do you get it. I am looking for it on the internet but not a lot of luck on purchasing it.

There is much said about the 'inert' ingredients in pesticides and how they may be more harmful than the active ingredient, but rarely is this the case.

Usually the 'inert' ingredients are water, some sort of soap to act as a surfactant (to help it stick better to plants) and some form of nitrogen to act as a fertilizer to encourage the plant to grow vigorously so the active ingredient is more effective.

Simple soap is incredibly toxic to aquatic life and that is one of the reasons various herbicides are labeled to not be used around water bodies...soap.

Having said the above I do find it somewhat hard to comprehend a gardener needing enough vegetation killer to cover 10s of acres. What on earth is it being used for? I am asking out of genuine curiosity.

A few use it instead of weed control. Blast the field(s) a week or 2 before the grow time and get to it. This is pretty costly compared to fumigants, though oddly safer than most fumigants.

It's really useful for quickly opening up new fields or growing areas.

If you have a lot of fence-line and buildings to maintain you're not around everyday it comes in handy, too.

There's all kinds of reasons people use a lot of RoundUp without going into the specifics of its design to be wastefully and indiscriminately used paired with "RoundUp Ready" crops.

Sunnfarm, You musta bought that Glystar last year. Since the price of corn shot up, Monsanto decided to up its glyphosates 20 DOLLARS A GALLON! They blamed China officially because they're having the Olympics this year. I'm not joking. Bleepity blank Monsanto (grumble mumble).

You will not find a glyphosate today for less than 28 dollars a gallon unless it is old stock or really crappy stuff. I spray about 8000 acres a year of this stuff. Did 300 acres today.

Anyway, a 6% solution will kill anything - 7 ounces per gallon. That would be 70 ounces per acre in my sprayer and I never spray above 48 ounces - mostly 22 to 32. Since you're targeting your spray and are using it on a lot taller stuff, you'll need every bit of 6%. Most of what I spray at low rate is under 6 inches tall.

We also put in a water conditioner like Ammonium sulfate or Choice. AMS is used at 17 lbs per hundred and choice at a quart per hundred. You can also use 28% UAN at a gallon per hundred.

We heat up the mix with a surfactant like LI 700 or Liberate. This isn't totally necessary as Weathermax already has surfactant in it, but a little more makes it more effective against weeds.

good luck.

Got mine last year, glad I stocked up... Only wish I bought more diesel last year as well... Bob.

Thanks for all the responses with the exception of one... Bet he/she/it has a whole list of do's & don'ts for everyone...Lets just say my thoughts about those kind of people would not be appropriate for this forum. esobofh, feel free to come to my 5 acres and hand pick weeds around 500 7yr old pines and spruces and my 20x60 garden. Probably global warming causing all theses weeds...lol
Anyway, I definately agree with the comments about Monsanto. I will look for the generic next time.

i use over 300 gallons of finished mix a year myself on about 10-12 acres. my house is 4 acres, then i maintain another 6-8 acres at our tower sites. no way i am gonna use a weedeater around the 50+ trees i have at home, several flower beds, and a 150' drive. then at the tower sites i have to deal with kudzu, pi/po, johnson grass, and general feild grass, as well as misc saplings. even if i did not use RU at the sites, i still use well over 100 gallons a year at home. the ditches down 2 sides of my house require spraying at least once a month, and that takes close to 30 gallons to spray them. as a matter of a fact, the only time they don't need spraying is when we get a lot of rain, cause then they have standing water and it keeps the weeds down. but most of the time they are bone dry and weeds grow 2-3 ft a month if not more.

every spring i RU the entire lawn, it kills off the weeds and teh bermuda comes back strong. the only places on my property that don't get a dose of RU is around my fruit trees. did that 1 year and killed several and the others were shocked so bad by it they barely had fruit.