CONIFERS GROWN IN COMMERCIAL NURSERIES, PLANTATIONS, AND FOREST (INCLUDING CHRISTMAS TREE FARMS)
Do not inject trees that are less than four inches in diameter.
Important: Preventative application is more effective than therapeutic treatment in trees showing disease symptoms. Trees in advanced stages of disease development may not respond to treatment. The health, species of the tree, and the environmental conditions will determine the rate of uptake. Infected trees will absorb the material more slowly due to the vascular plugging caused by the disease. If ArborFos is not absorbed within 24 hours, the tree is considered high risk and has a poor chance of survival. For all rates of application, see #3 instruction. Thoroughly irrigate trees/plants prior to or at the same time of injection. Test for phytotoxicity prior to regular use.
1. The MAUGET SYSTEM
(A) Mauget compressible capsule with insert hole
(B) Feeder tube with flanged gun-sight and opposite tapered beveled end
(A) Portable electric drill
(B) 11/64 in. (0.4 cm) drill bit
(C) Plastic mallet
(D) Tape measure
(E) Insertion tool (optional)
Measure the diameter of the tree at chest height in inches.
The dosage is:
0.17 fl. oz. (5 ml) per inch DBH
Round down to the lower whole number.
Injection sites can be placed on first and second vertically spaced circumferential rings where necessary. Vertical injection sites should not be aligned.
4. PRESSURIZING THE CAPSULES
Apply the appropriate amount of pressure on the top of the capsule in order to compress.
5. DRILLING THE TREE HOLE
Predrill spaced injection sites at a slight downward angle at the root flair/buttress area (approximately 6.0 to 8.0 in., 15 to 20 cm) above ground level, using a clean 11/64 in. (0.4 cm) drill bit (except monocotyledons, conifers, etc.). Drill to a depth of 3/8 to 1/2 in. (0.95 to 1.3 cm) into healthy xylem tissue under the bark. For mini-micro feeder tube, see Step 10. Disinfect drill bit, insertion tool (if used), as well as mini-micro insertion tool prior to use on each tree.
6. TREE HOLE DEPTH
It is important that the feeder tube be set to the proper depth in the conductive xylem tissue. If set too deeply, flow is restricted by blockage in the heartwood; if set too shallow, leakage may occur. The feeder tube dispensing end is beveled to allow for a 1/4 in. (0.6 cm) plus tolerance.
7. COMBINING CAPSULE AND FEEDER TUBE
Several methods of combining the micro-injector capsule with the feeder tube are acceptable including placing by hand, the feeder tube’s flange end, with the flange notch upward, into the micro-injector insert hole of a compressed upright micro-injector capsule. Push the flange end of the feeder tube flush with the membrane located at the inner end of the insert hole.
8. PLACING THE FEEDER TUBE IN THE TREE
Firmly seat the beveled, dispensing end of the feeder tube, with the attached upright micro-injector capsule, into the predrilled tree injection hole. Tap the rear side, opposite the insert hole of the micro-injector capsule either with an optional mallet, hammer or push forward with the palm your hand. This action will simultaneously seat the feeder tube in the injection hole while breaking the micro-injector capsule membrane for releasing the capsule contents into the feeder tube and into the tree. Another method is to place the feeder tube in the predrilled hole of the tree using the optional insertion tool. Then place the compressed micro-injector capsule onto the feeder tube in place.
Uptake in the tree usually occurs within several minutes. Capsules may be temporarily rotated in place to see if any liquid is left. When empty, turn the microinjectors upside down for one minute before removal. Applicators must remove micro-injectors promptly after treatment. Empty micro-injectors must not be left on the tree. The health and species of the tree, and local environmental conditions will determine the rate of uptake. If the capsule does not completely empty within a few hours, invert and carefully remove the micro-injector and enclose it in a heavy duty plastic bag for disposal in accordance with state and local regulations.
10. MINI-MICRO FEEDER TUBE
For established trees with thin bark (less than 3/8 in. (0.9 cm) thickness), use a 7/64 in. (0.3 cm) drill bit to produce a micro-injection site for a mini-micro feeder tube.