Vegetable Production Guide

Cole Crops
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Table 3 Disease Control

This section was updated - 13 January 2018

Table 3 Cole Crops Disease Control

 

Product

Rate

PHI*

Comments

Alternaria Leaf Spot

Rovral WP

(iprodione)

Group 2
3.0 kg/ha
(1.2 kg/acre)

Cabbage: 7
Cauli:  5

  • REGISTERED ON STORED CABBAGE AND CAULIFLOWER ONLY.
  • For stored cabbage, apply 7 to 14 days before harvest.
  • For cauliflower, apply 1 to 2 days prior to tying.
  • Do not make more than 1 application per season.

Switch 62.5 WG

(cyprodinil & fludioxonil)

Group 9 & 12
775 to 975 g/ha
(310 to 390 g/acre)

Apply in at least 200 L/ha (80 L/acre) of water
7
  • Suppression only.
  • REGISTERED ON CABBAGE ONLY.
  • Apply at first appearance of disease and continue on 7 to 10 day intervals.
  • Do not make more than 2 sequential applications of Switch or other fungicides in the same group (9 or 12) in a season.
  • Do not apply more than 2.9 kg of product/ha/year.
  • Do not apply more than 3 times per year.
  • Observe a 30 day plantback interval for crops not listed.
  • Do not enter treated area for 12 hours.

Inspire

(difenoconazole)

Group 3
364-512 mL/ha
(147 to 207 mL/acre)

Apply in at least 150 L/ha
(60 L/acre) of water
3
  • Do not apply more than 2.04 L/ha per crop per season.
  • Repeat at a 10 day interval.
  • Do not apply more than 2 sequential treatments without switching to another mode of action.
  • Observe a plantback interval of 8 months for crops not on label.
  • Do not enter treated area for 3 days for hand harvesting, 1 day for scouting, and for all other activities 12 hours.
  • May be tankmixed with Revus or Bravo 500 or Matador 120EC for labeled pests. Follow the most restrictive directions including rate, PHI, maximum applications and re-entry interval.

Quadris Top

(azoxystrobin/ difenoconazole)

Group 11 & 3

710 to 1000 mL/ha
(290 to 400 mL/acre)

Apply in at least 150 L/ha (60 L/acre) of water.

3
  • Repeat at 10 to 14 day intervals
  • Do not apply more than 4 times per year.
  • Do not re-enter treated areas for hand-harvesting for 3 days, or for scouting for 1 day.  For all other activities do not re-enter for 12 hours.
  • Observe a plant back interval of 60 days for crops not listed on this label or the Inspire label. 

Sercadis

(fluxapyroxad)

Group 7

250 to 333 mL/ha
(101 to 135 mL/acre)

Apply in 100 L/ha (40 L/acre) of water
3
  • Suppression only.
  • Repeat at 7 to 14 day intervals.
  • Do not make more than 3 applications per season.
  • Do not apply more than 1.0 L/ha (405 mL/acre) per season
  • No more than 2 consecutive applications before alternating with a fungicide with a different mode of action.
  • Do not enter treated area for 12 hours.
  • For crops not listed, observe a plant back interval of 1 year.

Downy Mildew

Serenade Opti

(Bacillus subtilis)
 
smileyUsed in organics
1.7 to 3.3 kg/ha                 (690 to 1300 g/acre) 0
  • Suppression only.
  • Make first application immediately at emergence or immediately following transplanting.
  • Repeat using a 10 to 14 day interval.
  • Also suppresses white mould.  See White Mould section of this table.
  • smileySerenade Opti and Serenade Max (PCP# 31666, 28549) are OMRI-Canada listed.  Check with your certification body before using in an organic operation.

Serenade Max

(Bacillus subtilis)
 
Note:  no longer produced
 
smileyUsed in organics
2.0 to 3.0 kg/ha             (800 to 1200 g/acre)

Aliette WDG

(fosetyl-aluminum)

Group U
2.25 to 3.12 kg/ha
(0.9 to 1.25 kg/acre)

7

  •  Maximum of 5 applications per crop season.
  • Repeat at 7 to 14 day intervals.
  • Do not enter treated area for 12 hours.
  • Do not use within one week of a copper application.

Orondis

(oxathiapiprolin)

Group 49

175 to 350 mL/ha (70 to 140 mL/acre

Apply in 110 L/ha (45 L/acre) of water.

0
  • do not use in the greenhouse.
  • Repeat at 5 to 10 day intervals.
  • Where multiple crop cycles are produced in the same year, do not make more than 6 applications/ha/year.
  • Do not apply more than 1.40 L/ha (570 mL/acre) per season.
  • Do not re-enter treated area for 12 hours.

Revus

(mandipropamid)

Group 40
400 to 600 mL/ha
(160 to 240 mL/acre )

Apply in 100 L/ha (40L/acre) of water
1
  • Use a non-ionic adjuvant (0.125% v/v).
  • Repeat at 7 to 10 day intervals.
  • Do not apply more than 4 times per year.
  • Do not enter treated area for 12 hours.
  • May be tank-mixed with Bravo 500. Observe most restrictive directions including rate, PHI and re-entry interval.

Presidio

(fluopicolide)

Group 43
220 to 292 mL/ha
(89 to 118 mL/acre)

Apply in 200 to 1000 L/ha (80 to 400 L/acre) of water
2
  • Tank-mix with a product that has a group number that is listed in this table for downy mildew. Observe most restrictive directions including rate, PHI and re-entry interval.
  • Do not use in greenhouses.
  • Repeat at 7 to 10 day intervals.
  • Do not make more than 4 applications per season.
  • Do not apply more than 880 mL/ha (356 mL/acre) per season.
  • Do not enter treated area for 12 hours.

Pristine WG

(boscalid and pyraclostrobin)

Group 7 & 11
1.0 kg/ha
(400 g/acre)
4
  • Suppression only.
  • Repeat at 7 to 10 day intervals.
  • Maximum of 4 applications per season
  • Do not re-enter until residues have dried.

Reason 500 SC

(fenamindone)

Group 11
400 to 600 mL/ha
(160 to 240 mL/acre)
2
  • Suppression only.
  • Repeat at 5 to 10 day intervals.
  • Maximum 3 applications per season.
  • Observe a plantback interval of 30 days for all crops.
  • Do not enter treated area for 48 hours.

Forum

(dimethomorph)
 
Group 40

 

450 mL/ha
(180 mL/acre)

Apply in at least 200 L/ha (80 L/acre) of water.

7
  • Suppression only.
  • Apply as a tank mix with another fungicide in this table that is active against downy mildew. Observe most restrictive directions including rate, PHI and re-entry interval.
  • Apply in at least 200 L/ha (80 L/acre) of water.
  • Repeat at 7 day spray intervals.
  • Maximum of 5 applications per season
  • Do not re-enter to perform hand-harvesting or irrigation for 7 days, or for scouting for 5 days.  For all other activities, do not re-enter for 12 hours.
  •  
 

Zampro

(ametoctradin & dimethomorph)

Group 40 & 45

0.8 to 1.0 L/ha
(300 to 400 mL  /acre)

Apply in at least 200 L/ha (80 L/acre) of water.
0
  • Repeat at 7 day intervals.
  • Do not apply more than 3 times per season.
  • Use a spreading/penetrating  adjuvant at the rate of 0.125% v/v.
  • Do not use non-ionic surfactants such as Agral 90 or Induce.
  • Do not re-enter for hand harvesting or irrigation for 6 days, or for scouting for 4 days.  For all other activities, do not re-enter for 12 hours.
  • Do not use in greenhouses.
  • Observe a plantback interval of 30 days for all crops not on the label.

Phostrol

(mono- and dibasic sodium, potassium, and ammonium phosphites)

Group 33

2.9 to 5.8 L/ha (1.2 to 2.3 L/acre)

Apply in 225 L/ha (90 L/acre) of water.

0
  • Suppression only.
  • Repeat at 7 to 21 day intervals.
  • Do not make more than 4 applications per season.
  • Do no re-enter treated area for 12 hours.

Rampart

(mono- and dipotassium salts of  phosphorous acid)

Group 33

3 to 7 L/ha (1.2 to 2.8 L/acre)

Apply in 300 to 500 L/ha (120 to 200 L/acre) of water.

1
  • Suppression only.
  • Repeat at 1 to 3 week intervals.
  • For brassicas with one crop cycle per season, do no make more than 8 applications.
  • For brassicas with multiple crop cycles per season, do not make more than 3 applications per crop cycle; and do not make more than 12 applications per season.
  • Do not apply to plants that are dormant or heat stressed.
  • Do not apply to plants treated with copper-based compounds at less than 20 day intervals.
  • Do not apply when conditions favour wet tissue for periods longer than 4 hours.
  • Do not re-enter treated area for 4 hours.

Confine Extra        

(mono- and di-potassium salts of phosphorous acid)

 

Group 33

3 to 6 L/ha
(1.2 to 2.4 L  /acre)

Apply in 100 L/ha (40 L/acre) of water.

1
  • Suppression only.
  • Repeat using a 7 to 21 day interval.
  • Do not make more than 6 applications per growing season.
  • Tankmixing with pesticide products containing a metal base and/or micronutrients may not be compatible and could potentially cause plant injury.  See label for details.

Cyazofamid 400SC (formerly Ranman 400SC)

(cyazofamid)

0.2 L/ha
(80 mL /acre)

Apply in 300 to 500 L/ha (120 to 200 L/acre) of water
1
  • Suppression only.
  • Repeat as a foliar broadcast at 7 to 10 day intervals.
  • Do not apply more than 5 times per crop per year.
  • Tankmix with a non-ionic or organosilicone surfactant such as Sylgard 309 at a the rate of 0.15 L/ha (60 mL/acre).
  • Do not enter treated area for 12 hours.
  • Also controls Pythium Root Rot and Pythium damping-off when applied as a soil drench to greenhouse transplants for field production.  See Pythium Root Rot section of this table for details.
  • Group 21 fungicides.

Torrent 400SC

(cyazofamid)

Alternaria Leaf Spot and Downy Mildew

Bravo 500

(chlorothalonil)

Group M
2.5 to 4.8 L/ha
(1.0 to 1.9 L/acre)
7
  • Apply on a 7 to 10 day schedule.
  • Do not enter treated area for 48 hours.

Copper 53W

(tri-basic copper sulphate)

Group M
4.0 kg/ha
(1.6 kg/acre)
1
  • ALSO REGISTERED FOR BACTERIAL LEAF SPOT (PSEUDOMONAS SPP.) ON BRUSSELS SPROUTS.

For Brussels Sprouts:

  • Apply no more than 2 times per season.
  • Repeat at a 14 to 21 day interval
  • Apply in 1000 L/ha (405 L/acre) of water.

Echo 90 DF

(chlorothalonil)

Group M
1.4 to2.7 kg/ha
(600 to 1100 g/acre)
7
  • Repeat at 7 to 10 day intervals.
  • Do not apply more than 5 times per season.
  • Do not enter treated area for 48 hours.
  • Do not apply within 10 days before or after an oil application.
  • Apply in 50 to 1600 L/ha (20 to 650 L/acre) of water

Echo 720

(chlorothalonil)

Group M
1.7 to 3.3 L/ha
(700 to 1300 mL/acre)

Clubroot (Plasmodiophora brassicae)

Allegro 500F

(fluazinam)

Group 29
Transplant Treatment: 50 mL 65
  • Apply 100 mL of solution per plant immediately after transplanting.
  • Do not follow with a pre-transplant treatment.
  • Do not enter treated area for 24 hours.
  • Apply in 100L of water.
Pre-Transplant Treatment: 2.9 L/ha
(1.2 L/acre)

Apply in 500 L/ha (200 L/acre) of water
65
  • Apply in a minimum band of 25cm along the planting row and incorporate to a depth of 15 to 20cm with a precision incorporator in the same operation.
  • Transplant the seedlings into the treated band. If planting to a bed, a broadcast application could be made prior to forming the bed.
  • Do not follow with a transplant treatment.
  • Do not enter treated area for 24 hours
Plant-back Interval (PBI): Areas treated can be planted to potatoes as soon as practical. For other root crops & leafy vegetables, the PBI is 30 days. For all other crops, PBI is 70 days.

White Mould

Serenade Opti

(Bacillus subtilis)
 
smileyUsed in organics
1.7 to 3.3 kg/ha
(690 to 1300 g/acre)
0
  • Suppression only.
  • Make the first application at emergence, or immediately following transplanting.
  • Repeat using a 10 to 14 day interval.
  • Also suppresses downy mildew. See Downey Mildew section of this table.
  • smileySerenade Opti and Serenade Max (PCP# 31666, 28549) are OMRI-Canada listed.  Check with your certification body before using in an organic operation.

Serenade Max

(Bacillus subtilis)
 
smileyUsed in organics
3.0 to 6.0 kg/ha
(1.2 to 2.4 kg/acre)

Pythium Root Rot (Pythium spp.)

Cyazofamid 400SC (formerly Ranman 400SC)

(cyazofamid)
30 mL/100L water 60
  • REGISTERED ON GREENHOUSE BRASSICA LEAFY VEGETABLE (Crop Group 5) TRANSPLANTS FOR FIELD PRODUCTION.
  • Also controls Pythium damping-off.
  • Apply once in the greenhouse as a soil drench to thoroughly wet the growing medium immediately after seeding.
  • Do not use a surfactant.
  • Do not enter treated area for 12 hours.
  • Also suppresses downy mildew when applied as a foliar spray to leafy brassica vegetables (Crop Group 5) in the field.  See Downy Mildew section of this table for details.
  • Group 21 fungicides.

Torrent 400 SC

(cyazofamid)

Serenade Soil

(QST 713 strain of dried Bacillus subtilis)
 
smileyUsed in organics.
2.7 to 14 L/ha (1.1 to 5.7 L/acre) 0
  • Suppression only.
  • Also suppresses Rhizoctonia damping-off.
  • May be applied as a surface application to direct-seeded crop or as a tranplant drench.
  • smileySerenade Soil (PCP# 30647) is OMRI-Canada listed.  Check with your certification body before using in an organic operation.

Transplant drench:

  • Apply as a drench at the time of transplanting.
  • Apply at a rate to thoroughly soak the growing media through the root zone or asa drench or directed spray using sufficient water to soak the root zone.

Surface Application:

  • Apply as a 15 cm band over the top of the seed row as a broadcast spray after planting.
  • Ensure incorporation into the seed zone within 24 hours of application via rainfall or overhead irrigation.

Post-plant applications:

  • Additional applications may be made to the soil as a drench or spray directed towards the base of the plant.
  • Irrigate to move material into the seed, root or transplant zone within 24 hours.
  • Repeat at 21 to 28 day intervals.

Aliette WDG

(fosetyl-aluminum)

Group 33

20 to 30 g product per 100 m2 in 20 L water per 100 m2 7
  • REGISTERED ON GREENHOUSE BROCCOLI AND CABBAGE TRANSPLANTS ONLY.
  • Controls only damping off caused by Pythium spp.
  • Apply as a drench.
  • Make first application during the propagation stage.
  • For control of late damping off, repeat 7 days prior to transplanting.
  • Do not enter treated area for 12 hours.
  • Do not use within one week of a copper application.

*PHI = Pre-harvest interval.
BUFFERS – Refer to product label for buffer requirements. See also Pesticide Regulations and Safety section of this guide.
PESTICIDE GROUP DETAILS – see Pesticide Toxicity Table of this guide.

smileyOMRI-Canada = Organic Materials Review Institute of Canada

 

 
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