PCP #27984 · Isk Biosciences Corporation · Fungicide
Group 21 cyazofamid suspension concentrate fungicide for control or suppression of oomycete diseases including late blight, downy mildews, Pythium and Phytophthora on potato, vegetables, grapes, hops, caneberries, turf, greenhouse crops and ornamentals.
Crop × pest × application rate combinations from the official label. Rates converted to per-acre. PHI is the pre-harvest interval; REI is the restricted-entry interval. Always confirm against the official label PDF before applying.
| Crop | Target | Rate | PHI | REI |
|---|---|---|---|---|
| Basil | Downy mildew (Peronospora belbahrii) | 0.081–0.089 L/acre | 0 d | 12 d |
| Bean | Downy mildew (Phytophthora phaseoli); Cottony leak (Pythium aphanidermatum); Phytophthora blight (Phytophthora capsici) - suppression | 0.081 L/acre | 0 d | 12 d |
| Bean | Downy mildew (Phytophthora phaseoli); Cottony leak (Pythium aphanidermatum); Phytophthora blight (Phytophthora capsici) - suppression | 0.081 L/acre | 0 d | 12 d |
| Bok Choy | Downy Mildew (Peronospora parasitica) (Suppression only) | 0.081 L/acre | 1 d | 12 d |
| Broccoli | Downy Mildew (Peronospora parasitica) (Suppression only) | 0.081 L/acre | 1 d | 12 d |
| Broccoli Raab | Downy Mildew (Peronospora parasitica) (Suppression only) | 0.081 L/acre | 1 d | 12 d |
| Brussels Sprouts | Downy Mildew (Peronospora parasitica) (Suppression only) | 0.081 L/acre | 1 d | 12 d |
| Bulb Vegetables | Downy mildew (Peronospora destructor) | 0.081 L/acre | 0 d | 12 d |
| Cabbage | Downy Mildew (Peronospora parasitica) (Suppression only) | 0.081 L/acre | 1 d | 12 d |
| Carrot | Cavity Spot, Root Dieback/Forking (Pythium spp.) (Suppression Only) | 0.178 L/acre | 30 d | 12 d |
| Cauliflower | Downy Mildew (Peronospora parasitica) (Suppression only) |
| 0.081 L/acre |
| 1 d |
| 12 d |
| Cavolo Broccolo | Downy Mildew (Peronospora parasitica) (Suppression only) | 0.081 L/acre | 1 d | 12 d |
| Chinese Broccoli | Downy Mildew (Peronospora parasitica) (Suppression only) | 0.081 L/acre | 1 d | 12 d |
| Collards | Downy Mildew (Peronospora parasitica) (Suppression only) | 0.081 L/acre | 1 d | 12 d |
| Cucumber | Downy Mildew (Pseudoperonospera cubensis) | 0.061–0.081 L/acre | 1 d | 12 d |
| Cucurbit Vegetables | Downy Mildew (Pseudoperonospera cubensis) | 0.061–0.081 L/acre | 1 d | 12 d |
| Cut Flower | Phytophthora foliar blights; downy mildews caused by Peronospora spp. | 164–273 mL/1000L | – | 12 d |
| Grape | Downy mildew (Plasmopara viticola) | 0.061–0.081 L/acre | 30 d | 144 d |
| Hops | Downy Mildew (Pseudoperonospora humuli) | 0.061–0.081 L/acre | 3 d | 12 d |
| Juniper | Root rot caused by Phytophthora cinnamomi (suppression) | 25 mL/100L | – | 12 d |
| Kale | Downy Mildew (Peronospora parasitica) (Suppression only) | 0.081 L/acre | 1 d | 12 d |
| Kohlrabi | Downy Mildew (Peronospora parasitica) (Suppression only) | 0.081 L/acre | 1 d | 12 d |
| Lettuce | Downy mildew (Bremia lactucae) - suppression | 0.081 L/acre | 0 d | 12 d |
| Loganberry | Phytophthora root rot (Phytophthora rubi) | 0.101 L/acre | 90 d | 12 d |
| Mizuna | Downy Mildew (Peronospora parasitica) (Suppression only) | 0.081 L/acre | 1 d | 12 d |
| Mustard Cabbage | Downy Mildew (Peronospora parasitica) (Suppression only) | 0.081 L/acre | 1 d | 12 d |
| Mustard Greens | Downy Mildew (Peronospora parasitica) (Suppression only) | 0.081 L/acre | 1 d | 12 d |
| Mustard Spinach | Downy Mildew (Peronospora parasitica) (Suppression only) | 0.081 L/acre | 1 d | 12 d |
| Napa Cabbage | Downy Mildew (Peronospora parasitica) (Suppression only) | 0.081 L/acre | 1 d | 12 d |
| Ornamentals | Downy mildews caused by Peronospora spp. | 164–273 mL/1000L | – | 12 d |
| Ornamentals | Phytophthora crown and root rot (soil applications) | 234–468 mL/1000L | – | 12 d |
| Ornamentals | Phytophthora foliar blights (foliar applications) | 234–468 mL/1000L | – | 12 d |
| Ornamentals | Pythium crown and root rot (soil applications) | 117–234 mL/1000L | – | 12 d |
| Pepper | Phytophthora blight, crown rot and root rot caused by Phytophthora capsici | 25 mL/100L | 0 d | 12 d |
| Potato | Late blight (Phytophthora infestans) | 0.04–0.081 L/acre | 7 d | 12 d |
| Rape Greens | Downy Mildew (Peronospora parasitica) (Suppression only) | 0.081 L/acre | 1 d | 12 d |
| Rhododendron | Root rot caused by Phytophthora cinnamomi (suppression) | 25 mL/100L | – | 12 d |
| Spinach | White rust (Albugo occidentalis) Suppression only | 0.061–0.081 L/acre | 1 d | 12 d |
| Tomato | Late blight (Phytophthora infestans) | 0.061–0.081 L/acre | 0 d | 12 d |
| Tomato | Late blight (Phytophthora infestans) | 0.04–0.081 L/acre | 1 d | 12 d |
| Tomato | Pythium Damping-off and root rot (Pythium spp.) | 30 mL/100L | 60 d | 12 d |
| Tomato | Pythium Damping-off and root rot (Pythium spp.) | 30 mL/100L | 60 d | 12 d |
| Tomato | Pythium Damping-off and root rot (Pythium spp.) | 30 mL/100L | 40 d | 12 d |
| Tomato | Pythium Root Rot (Pythium spp.) | 25 mL/100L | 0 d | 12 d |
| Turf | Pythium blight (Pythium aphanidermatum); Pythium damping-off (Pythium spp.); Pythium root dysfunction (Pythium volutum) | 14.3–26.6 mL/100m2 | – | 12 d |
Adjuvant requirements, compatibility notes, and mixing restrictions from the official label. Always confirm against the official label PDF before mixing.
| Guidance | Adjuvant | Rate |
|---|---|---|
| Required | SYLGARD OFX-0309 Fluid Cyazofamid 400SC Fungicide should be tank-mixed with a non-ionic or organosilicone surfactant (such as Sylgard OFX-0309) at the manufacturer's label recommendations. | manufacturer's label recommendations |
| Required | SYLGARD OFX-0309 Fluid Cyazofamid 400SC Fungicide should be tank-mixed with a non-ionic or organosilicone surfactant (such as Sylgard OFX-0309) at 0.15 L/ha. | 0.15 L/ha |
| Required | SYLGARD OFX-0309 Fluid Cyazofamid 400SC Fungicide should be tank-mixed with a non-ionic or organosilicone surfactant (such as Sylgard OFX-0309) at 4:3 ratio (Cyasofamid 400SC Fungicide: Sylgard OFX-0309) or at the manufacturer's label recommendations. | 4:3 ratio (Cyazofamid 400SC Fungicide : Sylgard OFX-0309) or at manufacturer's label recommendations |
| Required | SYLGARD OFX-0309 Fluid Cyazofamid 400SC Fungicide should be tank-mixed with a non-ionic or organosilicone surfactant (such as Sylgard OFX-0309) at 4:3 ratio ... or at the manufacturer's label recommendations. | 4:3 ratio (Cyazofamid 400SC Fungicide: Sylgard OFX-0309) or at the manufacturer's label recommendations |
| Required | SYLGARD OFX-0309 Fluid Cyazofamid 400SC Fungicide should be tank-mixed with a non-ionic or organosilicone surfactant (such as Sylgard OFX-0309) at the rate of 0.15 L/ha. | 0.15 L/ha |
| Required | SYLGARD OFX-0309 Fluid Cyazofamid 400SC should be tank-mixed with a non-ionic or organosilicone surfactant (such as Sylgard OFX-0309) at the manufacturer's label recommendations. | manufacturer's label recommendations |
| Required | Xiameter OFX-0309 Cyazofamid 400SC Fungicide should be tank-mixed with a non-ionic or organosilicone surfactant at the lowest label rate for water volumes below 600 L/ha (such as Xiameter OFX-0309 at 0.03% v/v). At water volumes above 600 L/ha, a surfactant is not needed. | lowest label rate for water volumes below 600 L/ha (such as Xiameter OFX-0309 at 0.03% v/v) |
| Required | Xiameter OFX-0309 Cyazofamid 400SC Fungicide should be tank-mixed with a non-ionic or organosilicone surfactant at the lowest label rate for water volumes below 600 L/ha (such as Xiameter OFX-0309 at 0.03% v/v). At water volumes above 600 L/ha, surfactant is not needed. | 0.03% v/v (lowest label rate) for water volumes below 600 L/ha; surfactant not needed above 600 L/ha |
| Recommended | organosilicone surfactant, non-ionic surfactant, or a blend If water volumes used are less than 500 litres per hectare, an organosilicone surfactant should be added when the disease infection is severe, or a non-ionic surfactant or a blend of an organosilicone and a nonionic surfactant should be added when disease | – |
| Do not mix | surfactant (for use on turf) Do not tank mix with a surfactant for use on turf. | – |
| Do not mix | surfactant (with drench application on greenhouse transplants) Do not use any surfactant with this drench application. | – |
| Do not mix | surfactant (with drench application on greenhouse pepper) Do not use any surfactant with this drench application. | – |
| Do not mix | any surfactant (with soil drench application) Do not use any surfactant with this drench application. | – |
| Do not mix | any surfactant (with drip irrigation application, Greenhouse tomato Pythium Root Rot) DO NOT use any surfactant with this drip irrigation application. | – |
| Do not mix | any surfactant (with drench application, Greenhouse tomato Pythium Root Rot) DO NOT use any surfactant with this drench application. | – |
| Do not mix | any surfactant For Caneberry Subgroup 13-07A (Phytophthora root rot soil drench): Do not use any surfactant with this drench application. | – |
About this content. This page presents the official PRD label as published by Health Canada's Pesticides Regulatory Directorate (formerly the Pest Management Regulatory Agency), the source of record. Always read the official label and consult your provincial pesticide- application authority before use. Report an error.
