>>Walter Reeves: When you’re
spraying weeds in a big lawn, particularly this
large turf area at the State Botanical Gardens
in Athens, you quickly figure out that
the little pump up sprayer is not going to make it. It takes a long time to get
herbicide on all these weeds. We’ve got about an acre here. By the way, you may see
some students behind me. They’re in their entomology
class collecting butterflies here at the
State Botanical Gardens too. Well, if you figure that the
pump-up sprayer is not exactly the tool you want to use
to distribute herbicide, there is an alternative. It’s called a hose-end
sprayer and I like it a lot for covering a large area where
with herbicides and pesticides like insecticides that you want
to apply in your backyard. They’ve been around for
a long time really. You can see this one Ortho®
used to make a long time ago; it had a glass jar – of course
that would break pretty easily. I’m sure they made
a pretty penny in replacing those glass jars. But the way they work is
actually pretty simple; it hasn’t changed
in a long time. It has a tube inside. The tube, of course,
fits down in the bottom of the container
of pesticide. You connect the
hose to this end. And in the Venturi Principle – the scientific principle
called the “Venturi Principle” – as the stream of water goes
across the top of this little black tube, it sucks up
pesticide which is down at the bottom of the tube;
it mixes it at a certain rate and the water rushes out the
end of the gun right here. This one is made for spraying
up in trees and shrubs; so it can spray for
a long distance. But these hose end sprayers, as
I say, are pretty clever gizmos. But there have been some
improvements over the years. Here’s one that I have found
recently that I like a lot. It’s still sort of
the same principle. You have the strainer on the
end of a long tube, of course. Put it down inside the plastic
container now so it doesn’t break quite as easily and
it has a dial on the side. Let me see if you can see this. See the dial on the side has
numbers on it so you can actually tell the sprayer how
much of the pesticide you want to add to the flow of water that’s
going through the gun on top. Today, in our particular case, we’re going to use a
pesticide that says “Use 1 fluid ounce or 2 Tablespoons
per gallon of water.” So I can turn the dial – as you
can see I’ve already got it on the 1 ounce right there – but it
has many different settings on it depending on the particular
pesticide you are using. I’ll move it back to
the 1 ounce right there. And so you take the herbicide, in our case, and pour it
‘undiluted’ into the container. Of course whenever you are using
any kind of pesticide, it’s important to protect your
eyes, protect your skin – like I am with
the gloves right here. You don’t have to measure in
this case, so we’ll just pour this herbicide down into
the container until we have enough to treat
this large area. Then because the dial allows it
to meter the amount of herbicide that goes into the water stream,
all we then have to do is to put it on top, fasten it in place
and then connect the water hose to the end as you can also see
it has a nice trigger right here which allows you to control the
flow of water through it when you’re walking back and forth
through your lawn. This is the easy way to do it
but there are a couple of other gizmos, in fact this one is
still made by Ortho® and it looks very similar to the
one I showed you earlier; although they have given us
a plastic container again. But in this particular case,
the way that it is used, it does not have a dial on top
– as you can see, nothing up here other than a valve to turn
the flow of water on and off. In this particular case, you
have to read the side of your pesticide container –
and this case, again, 1 Tablespoon for 2 ounces. Obviously I would not be
spraying a herbicide on a tree or a shrub but let’s assume
we’re going to spray an insecticide there. You would measure; let’s say we’re going to
use a gallon of pesticide – we’ve measured the
1 Tablespoon in there and then we add water to the
container to bring it up to the mark that is right on
the side of the container. Now the pesticide there is
slightly diluted with the water and when they’ve been diluted –
screw the top back on and again connect it the water hose and
use that to spray real high up into the shrubs or trees. But note that there is a
difference between the two. The one that has the dial,
you can actually set the application rate
with the dial. The one that does not have a
dial, you have to estimate basically how much herbicide or
pesticide you’re going to use, dilute it with water up to the
line on the side of the container then connect the hose
to it and use that to spray it on to the lawn or up into the tree or
where ever you’re going to use it. Well now, let’s demonstrate. I have a hose that is fully
charged right here, I’ll connect it
to the sprayer. Turn the water on and
let’s go over here. Now, you usually want to walk
backwards across your lawn. You don’t want to be walking
through the pesticide. You want to note how wide the
swath is that you’re applying. So basically – let me put my hand behind
me to control the hose – and we’ll cut it off and you
walk forward, a little bit over to the left there, back again
and so on and so forth. As you can see, this is a
quick and easy way to apply herbicides, insecticides,
fungicide, whatever it is you want to apply to your lawn. Now after you’ve applied it,
the material that is left in the sprayer can simply be
poured back into the container that it originally came from. I’m going to pour this back
in here but then you’ll need to wash this out – rinse it out
real good, use that rinsate – to put on other weeds around the
corners of your landscapes so that you’re still using it
in a manner indicated on the label of the product. Well, I think you can see
there is a lot of potential using these
hose end sprayers. They can be used anywhere
you have a water source that has good high pressure
to it and they really do save a lot of time particularly
compared to these little pump-up hand sprayers. © 2014 University of Georgia
College of Agricultural and Environmental Sciences
UGA Extension