Arborjet · fungicide
Propizol: rate per inch, label facts, and uses
Propizol is the Arborjet propiconazole injectable, the fungicide most crews reach for on oak wilt, anthracnose, apple scab, and needle diseases on trees too big to spray. The rate table by DBH band and the spring window.
Label facts
Propizol
- Manufacturer
- Arborjet
- Active ingredient
- Propiconazole
- EPA registration no.
- Not an EPA-registered pesticide
- Category
- fungicide
- Application
- trunk injection
- Frequency
- annual
- Retreatment interval
- 365 days minimum
- Protection
- About 12 months
- Time to effect
- About 14 days
Read the Propizol label (manufacturer PDF). The label is the legal document; this page is the app's copy of it.
Application months
per labelThe app does not carry a month window for this product; the pest’s treatment page sets the timing.
Rate table
Dose per tree by DBH band
Milliliters of product per tree, from the label table the app's calculator uses. Low, medium, and high are the label's pressure tiers; the treatment page for the pest says which one applies.
4 to 6
- Low
- 40 to 60 mL
- High
- 80 to 120 mL
7 to 9
- Low
- 70 to 90 mL
- High
- 140 to 180 mL
10 to 12
- Low
- 100 to 120 mL
- High
- 200 to 240 mL
13 to 15
- Low
- 130 to 150 mL
- High
- 260 to 300 mL
16 to 18
- Low
- 160 to 180 mL
- High
- 320 to 360 mL
19 to 21
- Low
- 190 to 210 mL
- High
- 380 to 420 mL
22 to 24
- Low
- 220 to 240 mL
- High
- 440 to 480 mL
25 to 27
- Low
- 250 to 270 mL
- High
- 500 to 540 mL
28 to 30
- Low
- 280 to 300 mL
- High
- 560 to 600 mL
31 to 33
- Low
- 310 to 330 mL
- High
- 620 to 660 mL
34 to 36
- Low
- 340 to 360 mL
- High
- 680 to 720 mL
37 to 40
- Low
- 370 to 400 mL
- High
- 740 to 800 mL
Worked examples
Dose per tree
Propizol
8″ DBH
70 to 90 mL low, 140 to 180 mL high (label band 7 to 9 in)
Propizol
14″ DBH
130 to 150 mL low, 260 to 300 mL high (label band 13 to 15 in)
Propizol
24″ DBH
220 to 240 mL low, 440 to 480 mL high (label band 22 to 24 in)
For the tree in front of you, with injection sites and the pest tier applied, use the tree injection rate calculator.
Labeled uses
What the label covers
Treatment guides that use Propizol
Target pests and diseases on the label (85)
Alternaria Fruit Rot · Alternaria Late Blight · Alternaria Leaf Spot · Ambrosia Beetles · Anthracnose · Apple Scab · Black Knot · Black Spot · Botryosphaeria Canker · Boxwood Blight · Brown Patch · Brown Spot Needle Blight · Bur Oak Blight · Butternut Canker · Canker · Canker Diseases · Cedar-Apple Rust · Cedar-Quince Rust · Cercospora Fruit Spot · Cercospora Leaf Blight · Cercospora Leaf Spot · Cercospora Needle Blight · Cherry Leaf Spot · Crabapple Scab · Cytospora Canker · Diplodia Tip Blight · Dollar Spot · Dothistroma Needle Blight · Douglas-Fir Beetle · Dutch Elm Disease · Elm Leaf Black Spot · Entomosporium Leaf Spot · Fig Rust · Fir Engraver · Fir Needle Cast · Fusarium · Fusiform Rust · Greasy Spot · Hypoxylon Canker · Ips Engraver Beetles · Jeffrey Pine Beetle · Larch Canker · Larch Needle Cast · Laurel Wilt · Leaf Blotch · Leaf Scorch · Leaf Spot · Lophodermium Needle Cast · Mountain Pine Beetle · Nectria Canker · Needle Blight · Needle Cast Diseases · Oak Wilt · Passalora Needle Blight · Peach Leaf Curl · Pear Scab · Pecan Scab · Phomopsis Blight · Phomopsis Tip Blight · Phyllosticta Leaf Spot · Pine Bark Beetles · Pine Pitch Canker · Pine Shoot Beetle · Pine-Pine Gall Rust · Pitch Canker · Powdery Mildew · Quince Rust · Red Turpentine Beetle · Rhabdocline Needle Cast · Rhizosphaera Needle Cast · Rust · Scab · Seiridium Canker · Shot Hole Disease · Southern Pine Beetle · Spring Dead Spot · Spruce Bark Beetle · Swiss Needle Cast · Sycamore Anthracnose · Take-All Root Rot · Tar Spot · Tip Blight · Walnut Anthracnose · Western Pine Beetle · White Pine Blister Rust
The label check runs this list against the host, the pest, the month, the dose, and the last application on the tree before a prescription goes out.
FAQ
Questions arborists ask
What is Propizol?
Propizol is a fungicide from Arborjet with Propiconazole as the active ingredient. It is applied by trunk injection.
What is the Propizol rate per inch of DBH?
The label sets the dose by DBH band, not a flat rate per inch. A 8 inch tree takes 70 to 90 mL low, 140 to 180 mL high (label band 7 to 9 in). The PHC Rx calculator reads the band for the tree in front of you and sets the number of injection sites.
How often can Propizol be applied?
Label frequency: annual. Minimum retreatment interval 365 days. Expected protection about 12 months. Time to effect about 14 days.
What does Propizol treat?
The label lists 85 target pests or diseases. The treatment guides on this site that use it: sycamore anthracnose, apple scab, black knot, boxwood blight, diplodia tip blight, dutch elm disease, rhizosphaera needle cast, oak wilt. Each guide has the rate, the timing window, and the alternatives.
Where do these numbers come from?
The PHC Rx product catalog, built from the Propizol label linked above, and synced to this page from the app. The label is the legal document; if the two disagree, the label wins and the catalog gets fixed.
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