The Purpose Of Macro-Infusion
The purpose of Macro-Infusion is the complete and even coverage
of the 2 - 4 year old branches so that if a beetle comes to
feed, the disease cannot enter the tree. Infusing into the
root flares is critical to the success of even and complete
distribution. The tissue in the root flares allows for sideways
movement of the chemical as it is infused. Trunk tissue on
the other hand is hard and rigid. It is highly compartmentalized.
Infusion into trunk tissue will provide very limited sideways
movement of the Arbotect solution and will result in small
portions of the crown receiving a large dose of Arbotect with
other areas receiving nothing.
The Process
Step 1 - Inspect
the tree
• Make sure the elm you are treating is not diseased.
Fully scan the crown to make sure there are no
symptoms. If the tree is diseased - DO NOT TREAT. Use
the tracing process to isolate any disease that might be present
• Measure the tree and determine your dosage. Elms require
12 oz of Arbotect per 5" DBH. (Diameter breast height).
Each ounce of Arbotect is diluted in 1/2 gallon of water. You
can find a copy of the DOSAGE
TABLE by clicking on the link
• Large trees could require increased amounts of chemical
to achieve complete distribution. Small elms, or trees with
portions of the crown missing may require a reduced dose.
See Dosing Considerations for more information
• Determine how much root flare excavation is needed
• Look for root rot or significant decay in the root
collar area - if present do not treat
Elms infected with Dutch elm
disease should not be treated
Significant canopy die back or stress may compromise uptake
time and distribution and be a sign of a serious problem slowly
killing the tree.
Step 2 - Excavate
the root flares (if necessary)  • Use a shovel and trowel to remove sod and soil without damage
to the tree
• Thoroughly brush soil from root flares with a hand
broom
• Infusion sites should be 8-10 inches below the top
of the root flare
Soil left on the root flare can
dull the bit and plug the xylem
If sod is carefully removed it can facilitate fast cleanup
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 Equipment
need to perform Macro-Infusion on elms. |
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| Every
aspect of macro infusion is designed to get even and complete
crown coverage of the Arbotect solution. |
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