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The tool that I am going to tell you about is for
using herbicides such as RoundUp. The biggest mistakes that people
make when using non-selective herbicides like RoundUp is over spray
getting the herbicide on plants that they did not intend to spray,
and over applying the product. If you spray to the point of run off,
you are applying way too much.
The weed dabber is a tool used for spot treating weeds without
getting the herbicide on other plants.
Start by going to your hardware store and buying a piece of 1- ½”
PVC pipe. You only need a piece 30” long, but they might make you
buy a 10' section. It's pretty cheap though. You'll need a plastic
PVC cap for one end of the pipe, and on the other end you'll need an
adapter to convert the PVC pipe to a standard pipe thread. You'll
have to let the clerk at the hardware store help you find the best
combination of fittings to use. What you need to do is to get the
PVC pipe reduced down to a male garden hose type fitting. Hardware
stores sell brass fittings that convert standard pipe thread to the
same thread used on garden hoses.
Probably what you'll end up with is an adapter that will convert the
1-½” PVC to 3/4” male pipe. Then an adapter to convert the 3/4” male
pipe to a male garden house fitting. They also make a cap that you
can install on the end of a garden hose, you'll need one of those.
This cap must have a rubber garden hose washer in it so it seals
properly.
The PVC fittings have to be glued on so you'll have to pick up some
PVC pipe glue and cleaner. You have to use the cleaner to remove the
film and gloss from the PVC pipe and fittings before you glue them.
Once you have them cleaned, just apply a coating of glue to both the
pipe and the fitting, slide the fitting on and twist it at the same
time. Hold the fitting tight for 60 seconds and it will be glued
tightly.
Cut a piece of pipe 30” long and glue the pipe cap on one end, and
the PVC to pipe thread adapter on the other end. Apply a small
amount of pipe dope or Teflon tape to the threads of the adapter,
and screw the male garden house fitting onto the adapter. Screw the
garden hose cap to the male garden hose fitting.
Now back to the end of the pipe that you glued the pipe cap to.
Drill a very small hole right in the middle of the pipe cap. You
might have to experiment a little with the size of the hole you
need, but make sure you start with a very small hole. I'd start with
1/16”. Cut a piece of regular household sponge in a square about
1-½” square. What you are going to do is place this sponge over the
small hole you drilled in the pipe cap, and secure it there by
covering it with a piece of light weight screen or mesh cloth. Maybe
even a piece of an onion bag. You can secure the mesh to the PVC
pipe with a hose clamp, or electrical tape.
Remove the garden hose cap from the other end of the PVC pipe, and
fill the pipe with pre-mixed (ready to use) RoundUp. Replace the
garden hose cap and you have yourself a weed dabber. The RoundUp
will seep out the hole in the end of pipe cap and be absorbed by the
sponge. As long as the garden hose cap is tight the vacuum in the
pipe will keep the herbicide from running out too fast. Once the
sponge is damp, you can start dabbing weeds. Remember, you only want
the weeds damp and not dripping wet. As long as you are leaving some
RoundUp on the weeds as you dab them, the herbicide should kill
them.
Depending on the temperatures, it could take a week or so before you
can see the effects of the herbicide. If the sponge gets too dry you
can loosen the cap a little to release the vacuum and more herbicide
will be released onto the sponge. Or you can simply turn the tool
upside down and that should let some air into the chamber, thus
releasing the vacuum. As always, read the label and follow the
directions on the herbicide package.
Michael J. McGroarty is the author of this article. Visit his most
interesting website,
http://www.freeplants.com and sign up for his excellent
gardening newsletter.
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