Spot Sprayer for Round Up

[LukeJohnson]

By trade, I am a crop advisor/ crop consultant. If the pump will run water, it will spray roundup. As far as leaving any residual chemical in the tank, dont worry about it, as roundup will wash out easily. As to your question on generic vs. propriotary, both are going to net the same results, although rates and additives may vary. That is, roundup powermax's rate is 24 oz. per acre, roundup original max is 24-32 oz per acre, and most generics run from 24 oz to 48 oz per acre. Those rates are broadcast rates and are based on general application, as they can change based on the intended application. If you are spot applying and using any roundup product, it is a good rule of thumb to use about 6 to 8 oz of roundup per gallon of water. Remeber you do not have to soak the weeds, as roundup/ glyphosate is a systemic herbicide, therby any contact will be translocated back to the root. Dont buy roundup at walmart, you get alot better deal buying from your local chemical dealer. Regardless of whether or not you are using generic or name brand, the addition of a surfactant will aid in efficacy. Also adding ammonium sulfate will help. If broadcast application, you need to be in the 7 to 10 gallon per acre application rate on your water. If you have any issues on calibration send me a PM.

 

[smstonypoint]

By trade, I am a crop advisor/ crop consultant. If the pump will run water, it will spray roundup. As far as leaving any residual chemical in the tank, dont worry about it, as roundup will wash out easily. As to your question on generic vs. propriotary, both are going to net the same results, although rates and additives may vary. That is, roundup powermax's rate is 24 oz. per acre, roundup original max is 24-32 oz per acre, and most generics run from 24 oz to 48 oz per acre. Those rates are broadcast rates and are based on general application, as they can change based on the intended application. If you are spot applying and using any roundup product, it is a good rule of thumb to use about 6 to 8 oz of roundup per gallon of water. Remeber you do not have to soak the weeds, as roundup/ glyphosate is a systemic herbicide, therby any contact will be translocated back to the root. Dont buy roundup at walmart, you get alot better deal buying from your local chemical dealer. Regardless of whether or not you are using generic or name brand, the addition of a surfactant will aid in efficacy. Also adding ammonium sulfate will help. If broadcast application, you need to be in the 7 to 10 gallon per acre application rate on your water. If you have any issues on calibration send me a PM.

Luke,

Doesn't your rule of thumb depend on the % glyhosate in the product and what you are trying to kill? I've been using a 2% solution of 41% glyphosate (2.67 ounces/gallon) to spray privet regrowth. A higher concentration seems a waste of product and money.

Steve

 

[LukeJohnson]

You are right, I was basing that on glyphosate that one might find at the local co-op or chemical dealer. Most glyphosate is going to be from 38% to 42% active. a few oz. here or there is going to be minimally costly. Be sure that the weeds you are targeting are controlled by glyphosate. A 2.5 gal jug of generic glyphosate(41%) costs me about $45 at my local Agrilliance Store.

At the rate that I stated I was basing that on grass and fence rows. Those two are often the hardest to obtain complete control on.

 

[jcliburn]

I'm in the process of trying to rid my farm of privet (a truly abominable invasive species). I have a 15 gallon sprayer with a 1 gpm flow rate that does a decent job, but I plan to upgrade to a 25 gallon sprayer with a 2gpm flow rate.

I share your pain. Privet has really gained a foothold here in south Mississippi. It's tough as nails; sends out suckers to produce new plants; is a prolific berry producer whose seeds are efficiently spread by bird droppings; and if it's cut down, it regrows quickly from the stump. It forms very dense stands and competes successfully to choke out native species. It's an evergreen here.

I bought 50 acres of mixed pine and hardwood cutover about 10 years ago and the stuff is everywhere. I guess I'll battle it until I die.

If it were a cash crop I'd be a very, very rich man.

I just bought a 40 gallon spot sprayer with a 12v 3.8 gpm pump from TSC. (Delivered yesterday.) I formerly used my dad's 155 gallon PTO sprayer, but it's a pain to hook up and it leaks pretty badly.

Glyphosate is the chief weapon in my one-man privet war. I spray a 2% mix (of the 41% concentrate) on the foliage, and I saturate a freshly cut stump with straight 41%. The stump treatment is about the only thing I've found that will kill a sizable (15-20 foot) privet "tree" in one treatment. But, of course, then I've got a tree carcass to dispose of.

I loathe privet with a passion. It laughs at my feeble attempts to eradicate it.

Jay

 

[smstonypoint]

I share your pain. Privet has really gained a foothold here in south Mississippi. It's tough as nails; sends out suckers to produce new plants; is a prolific berry producer whose seeds are efficiently spread by bird droppings; and if it's cut down, it regrows quickly from the stump. It forms very dense stands and competes successfully to choke out native species. It's an evergreen here.

I bought 50 acres of mixed pine and hardwood cutover about 10 years ago and the stuff is everywhere. I guess I'll battle it until I die.

If it were a cash crop I'd be a very, very rich man.

I just bought a 40 gallon spot sprayer with a 12v 3.8 gpm pump from TSC. (Delivered yesterday.) I formerly used my dad's 155 gallon PTO sprayer, but it's a pain to hook up and it leaks pretty badly.

Glyphosate is the chief weapon in my one-man privet war. I spray a 2% mix (of the 41% concentrate) on the foliage, and I saturate a freshly cut stump with straight 41%. The stump treatment is about the only thing I've found that will kill a sizable (15-20 foot) privet "tree" in one treatment. But, of course, then I've got a tree carcass to dispose of.

I loathe privet with a passion. It laughs at my feeble attempts to eradicate it.

Jay

Jay,

I, too, detest privet. I believe it was introduced to this country from China and Japan for use as a shrub. Bad idea.

I declared war on the despicable plant last October. I used my chain saw to cut down larger trees and sprayed undiluted 41% glyphosate on the cut stumps. I used my brush cutter to cut the smaller plants. Since warmer weather, I have been using my bush hog to knock back the regrowth of the small plants and using a 2% glyphosate solution on the regrowth that I can't access with the bush hog.

If I can maintain my current productivity, I will have eradicated the privet on my farm when I am 143 years of age.

Steve

 

[jcliburn]

I used my brush cutter to cut the smaller plants.

Steve,

If by "brush cutter" you mean a weedeater on steroids with a saw blade on the hub instead of a string spool, I have one of those, too (Stihl FS 85). That's what I initially used on privet that was too large for efficient bush hogging, or too embedded in desirable plant species for spraying.

However, I soon discovered that a *much* better tool for this is a pole saw (I have a Stihl HT 100). Using the pole saw, I don't have to approach the offending privet bush nearly so closely and have it shred my arms and face with its tough tentacles; I just just whack off some of the lower branches, then reach in and cut the trunk near the ground. (More often than not, there are actually a clump of trunks...)

For manual brush control, I find my pole saw to be the best tool I've ever purchased.

Jay

 

[missingstexas]

I loathe privet with a passion. It laughs at my feeble attempts to eradicate it.
Jay

Sorry for the highjack...

Can someone post a picture of this "privet"? I'm having trouble controling something we've always called 'Chicken Tree's", but I've heard them called Tallow tree's as well. Is this similar? The place I purchased this past June has about 5 acres of pasture and the fence line hasn't been touched for the last 15 years. Pine trees, Chicken trees, Pin Oaks, Water Oaks, and lots and lots of berry vines and honeysuckle. I just recently purchased a 12' pole chainsaw to start the battle this coming fall, but I must admit I'm very intimidated at this point.

 

[jcliburn]

Sorry for the highjack...

Can someone post a picture of this "privet"? I'm having trouble controling something we've always called 'Chicken Tree's", but I've heard them called Tallow tree's as well. Is this similar? The place I purchased this past June has about 5 acres of pasture and the fence line hasn't been touched for the last 15 years. Pine trees, Chicken trees, Pin Oaks, Water Oaks, and lots and lots of berry vines and honeysuckle. I just recently purchased a 12' pole chainsaw to start the battle this coming fall, but I must admit I'm very intimidated at this point.

Chinese privet (ligustrum sinense) is different from a Chinese tallow tree. Here in Mississippi, the tallow tree is called a "popcorn tree" because of it's white, nut-like fruit resembling popcorn that appears in summer. People plant them as ornamentals, but, like privet, it too is very invasive and will spread like wildfire. After cutting it, poison the stump.

I'll post pics of privet under a different thread later.

Jay

 

[smstonypoint]

Sorry for the highjack...

Can someone post a picture of this "privet"? I'm having trouble controling something we've always called 'Chicken Tree's", but I've heard them called Tallow tree's as well. Is this similar? The place I purchased this past June has about 5 acres of pasture and the fence line hasn't been touched for the last 15 years. Pine trees, Chicken trees, Pin Oaks, Water Oaks, and lots and lots of berry vines and honeysuckle. I just recently purchased a 12' pole chainsaw to start the battle this coming fall, but I must admit I'm very intimidated at this point.

Here's a link to Google's images of Chinese privet.



chinese privit - Google Search

I think Japanese privet looks similar, but has larger leaves.

Steve

 

[smstonypoint]

Steve,

If by "brush cutter" you mean a weedeater on steroids with a saw blade on the hub instead of a string spool, I have one of those, too (Stihl FS 85). That's what I initially used on privet that was too large for efficient bush hogging, or too embedded in desirable plant species for spraying.

However, I soon discovered that a *much* better tool for this is a pole saw (I have a Stihl HT 100). Using the pole saw, I don't have to approach the offending privet bush nearly so closely and have it shred my arms and face with its tough tentacles; I just just whack off some of the lower branches, then reach in and cut the trunk near the ground. (More often than not, there are actually a clump of trunks...)

For manual brush control, I find my pole saw to be the best tool I've ever purchased.

Jay

Jay,

Yes, I've been using a "macho" weedeater, in my case a Husqvarna 235FR. I had been using a Husqvarna 225R, but when its piston burned I bought the 235FR -- a more powerful saw. I put a new engine in the 225R and use it around the house.

I had not thought about using a pole saw on privet, but I had been thinking about buying one to attack the multi-flora rose on my farm. That's a whole different story!

Steve