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Tree
Fungicide Injection Technique
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Once you have
prepared the tree by removing 4" to 6" of dirt away from the root flares,
proceed with Step1:
STEP 1:
Pour the prescribed amount
of chemical into tank and add water according to concentration rates set forth
on the product label. (eg.
16” dia. tree requires 160 mils chemical for the 10 mil dosage rate -
preventive rate ….. and 320 mils of chemical for the 20 mil dosage -
therapeutic rate). If
there is any possibility of infection even though no visible signs are
apparent, use the stronger therapeutic dosage. Attach the hook-up line to the
tank and make sure the valve is turned off.
STEP 2:
Operate the air pump until the
gauge shows 20 to 25 pounds of pressure in the canister If you have an air
compressor the air chuck will indicate the desired air pressure. Once, the
tank is connected to the tree you will have to periodically monitor the air
pressure at the desired level.
STEP3:
Drill 5/16 inch holes as close to
the ground as possible, slanting slightly upward. Drill until you get white
grindings - about 1-1/2 inches to 2 inches
(this indicates that you are
through the trunk and into the cambium where you need to be for good uptake).
If the
bark is thick use a hatchet to remove and smooth just enough bark to allow
proper penetration of your drill bit. To remove fine sawdust from the hole use
a small piece of tubing like a blow tube about 18" to 24" long. Direct one end
at the drill portal and then blow on it to remove the excess sawdust.
STEP 4:
Insert the tee into the drill
portal and gently tap the tee gently with a small hammer in-order to seat the
tee into the sap wood.
STEP 5:
Drill the next hole 3"- 4"
inches from the first hole following the contour of the tree. Drill holes on
the flare roots, not in the valleys of the roots. Follow the same procedure
around the base of the tree with subsequent holes. It is best to drill 3- 4
holes, inserting the tees as you move around the tree. Loop harness tubing as
shown in illustration to avoid airlocks and to break bubbles.
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STEP 7: When treatment is completed,
remove harness from tree replacing the dirt back around the tree. Do not fill
holes with any compound or foreign material and this will slow the natural
healing of the tree.
STEP 8:
Practice thorough sanitation in equipment care before moving to next tree to be
treated. Wash you lines in a 10% Clorox solution and rinse in clear water.
Check these
pages for more information:
Looking for the Root Flares .... http://www.oakwilt.com/rootflare.html
Oak Wilt - The
Injection Process
http://www.oakwilt.com/injectionprocess.html
DOSAGE:
Dosage rates must be in complete compliance with the prodduct label. Visual
symptoms of oak wilt do not necessarily occur the first season of infection. In
areas with high incidence of disease, all trees have been exposed and a large
percentage infected. It is reasonable, therefore, to use the therapeutic dosage
for all treatments. Retreatment for infected trees is strongly recommended for
the following year. |
