Vegetable Production Guide

Cole Crops
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Table 3 Disease Control

This section was updated - 12 September 2018

Table 3 Cole Crops Disease Control

 

Product

Rate

PHI*

Comments

Alternaria Leaf Spot

Rovral WP

(iprodione)

Note:  Registration cancelled.  Last date of use for remaining stocks is June 21, 2021

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 in150 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. 

Quadris F

(azoxystrobin)
 
Group 11
1.12 L/ha
(450 mL/acre)
 
Apply in 95 L/ha (40 L/acre) of water.
1
  • REGISTERED ON CABBAGE ONLY.
  • Suppression only.
  • Repeat using a 7 to 14 day application interval.
  • Do not make more than 3 applications per season.
  • Do not apply more than 3.36 L/ha (1.36 L/acre) per season.
  • Do not re-enter treated area for 12 hours.

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)
 
Apply in 150 to 250 L/ha (60 to 100 L/acre) of water
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.

Torrent

(cyazofamid)
 
Group 21
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.

 

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.)

Torrent

(cyazofamid)
 
Group 21
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.

 

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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