Vegetable Production Guide

Cucurbits
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Table 3 Cucurbit Disease Control

This section was updated - 16 January 2018

Table 3 Cucurbit Disease Control

 

Product

Rate

PHI*

Comments

Alternaria Leaf Spot

Manzate DF

(mancozeb)

Group M
2.25–3.25 kg/ha
(0.9 to 1.3 kg/acre)
14
  • Repeat at 5 to 7 day intervals.
  • Do not apply where runoff is likely to occur.
  • Apply in 200 to 1000 L/ha (80 to 405 L/acre) of water.
  • Apply when conditions favour disease development

Penncozeb 75DF

(mancozeb)
1.1 to 3.25 kg/ha
(0.44 to 1.3 kg/acre)
14
  • Start applications when runners begin to form or at first sign of disease.
  • Repeat at weekly intervals.
  • Do not enter treated area for 24 hours.
  • Group M fungicides.

Penncozeb 75DF Raincoat

(mancozeb)

Dithane DG Rainshield NT

(mancozeb)
1.1 to 3.25 kg/ha
(0.445 to 1.3 kg/acre)
14
  • Repeat at weekly intervals.
  • Start applications when runners begin to form or at first sign of disease.
  • Direct spray for thorough coverage of upper and lower leaf surfaces.
  • Group M fungicides.

Dithane F-45


(mancozeb)
1.8 to 5.5 L/ha
(0.73 to 2.2 L/acre)

Cueva

(copper octanoate)

Group M1

Use a 0.5% to 2% solution at 470 to 940 L/ha (190 to 380 L/acre) 1
  • For a 0.5% solution, mix 1 part Cueva to 200 parts water.
  • For a 2% solution, mix 1 part Cueva to 50 parts water.
  • Repeat at 7 to 10 day intervals.
  • Repeat at 5 to 7 day intervals following heavy rain or when disease pressure is high.
  • Do not make more than 15 applications per year.
  • Time applications so that 12 hours of dry weather follow application.
  • Do not re-enter treated area for 4 hours.
  • See this table sections below for control of angular leaf spot, downy mildew and powdery mildew.

Aprovia

(benzovindiflupyr)

Group 3

500 to 750 mL/ha                         (200 to 300 mL/acre)

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

1
  • For control of gummy stem blight, use the high rate and apply in 190 L/ha (75 L/acre) of water.
  • Apply as a broadcast foliar.
  • Repeat using a 7 to day interval.
  • Do not apply more than 3 L/ha (1.2 L/acre) per season.
  • Observe a plantback interval of 6 months for crops not listed.
  • Do not re-enter treated area for 12 hours.
  • Also controls powdery mildew.  See this Powdery Mildew section of this table for details.

Aprovia Top

(benzovindiflupyr/

difenoconazole)

Group 3 & 7

761 to 967 mL/ha (308 to 391 mL/acre

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

1
  • For suppression of gummy stem blight, use the high rate and apply in 190 L/ha (75 L/acre) of water.
  • Apply as a broadcast foliar spray.
  • Repeat using a 7 day interval.
  • Do not apply more than 3.9 L/ha (1.6 L/acre) per season.
  • Observe a plantback interval of 60 days for sweet corn and 6 months for crops not listed.
  • Do not re-enter treated area for 12 hours.
  • Also controls powdery mildew.  See this Powdery Mildew section of this table for details.

Lance WDG

(boscalid)
460 g/ha
(186 g/acre)
0
  • Repeat at 7 to 14 day intervals.
  • Do not make more than 4 applications per season.
  • Also controls gummy stem blight.
  • Do not enter treated area for 12 hours.
  • For crops not on the label, observe a plant back interval of 14 days.
  • Group 7 fungicides.

Cantus WDG

(boscalid)

Elatus

(benzovindiflupyr/

azoxystrobin)

Group 11 & 7

500 g/ha (202 g/acre)

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

1
  • Also controls gummy stem blight.
  • To control gummy stem blight, apply in 190 L/ha (75 L/acre) of water.
  • Apply as a broadcast foliar application.
  • Repeat at 7 day intervals.
  • Do not apply more than 1.5 kg/ha (0.6 kg/acre) per season.
  • Observe a plantback interval of 6 months for crops not listed.
  • See this table section below for control of powdery mildew.

Cabrio EG

(pyraclostrobin)

Group 11
560 to 840 g/ha
(220 to 340 g/acre)

Apply in at least 350 L/ha (142 L/acre) of water.
3
  • Do not apply more than 4 times per season.
  • After each application, alternate with a fungicide with a different mode of action.
  • Repeat at 7 day intervals.
  • Do not enter treated area for hand-harvesting for 3 days and for all other activities, do not enter for 12 hours.
  • Do not use treated crop for feed.

Angular Leaf Spot

Copper 53W

(tri-basic copper sulphate)

Group M
2.5 to 3.0 kg/ha
(1.0 to 1.2 kg/acre)
1
  • Apply in 1000 L/ha (405 L/acre) of water.
  • Maximum 5 applications per season.
  • Cucumbers: Apply at 7 day interval
  • Other cucurbits: Apply at a 5 day interval.

Copper Oxychloride 50

(copper oxychloride)

Group M
Cucumber: 4.0 kg/ha
(1.6 kg/acre)                               Other cucurbits: 3.0 kg/ha (1.2 kg /acre)
1
  • Apply in 1000 L/ha (405 L/acre) of water.
  • Repeat at 7 day intervals.
  • Do not enter treated area for 48 hours.

Parasol F

(copper hydroxide)

Group M1
2.3 to 3.12 L/ha
(0.9 to 1.25 L/acre)
1
  • Start applications when plants begin to vine.
  • Repeat at 7 day intervals.
  • Maximum 5 applications per season.

Cueva

(copper octanoate)

Group M1

Use a 0.5% to 2% solution at 470 to 940 L/ha (190 to 380 L/acre) 1
  • For a 0.5% solution, mix 1 part Cueva to 200 parts water.
  • For a 2% solution, mix 1 part Cueva to 50 parts water.
  • Repeat at 7 to 10 day intervals.
  • Repeat at 5 to 7 day intervals following heavy rain or when disease pressure is high.
  • Do not make more than 15 applications per year.
  • Time applications so that 12 hours of dry weather follow application.
  • Do not re-enter treated area for 4 hours.
  • See this table sections above and below for control of Alternaria leaf blight, downy mildew and powdery mildew.

Cladosporium Scab

Bravo 500

(chlorothalonil)

Group M

4.8 L/ha
(1.9 L/acre)
1
  • Begin application when plants are in first true leaf stage.
  • Repeat at 7 day intervals
  • Do not enter treated area for 48 hours.

Echo 90DF

(chlorothalonil)
2.7 kg/ha
(1.1 kg/acre)
1
  • Repeat at 7 to 10 day intervals.
  • Maximum of 8 applications 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
  • Group M fungicides.

Echo 720

(chlorothalonil)
3.3 L/ha
(1.3 L/acre)

Dithane DG
Rainshield NT

(mancozeb)
1.1 to 3.25 kg/ha
(0.44 to 1.3 kg/acre)
14
  • Repeat at weekly intervals.
  • Start applications when runners begin to form or at first sign of disease.
  • Direct spray for thorough coverage of upper and lower leaf surfaces.
  • Group M fungicides.

Manzate DF

(mancozeb)

Group M
2.25 to 3.25 kg/ha
(0.9 to 1.3 kg/acre)
14
  • Repeat at 5 to 7 day intervals.
  • Do not apply where runoff is likely to occur.
  • Apply in 200 to 1000 L/ha (80 to 405 L/acre) of water.

Penncozeb 75DF

(mancozeb)
1.1 to 3.25 kg/ha
(0.44 to 1.3 kg/acre)
14
  • Start applications when runners begin to form.
  • Repeat at weekly intervals.
  • Do not enter treated area for 24 hours.
  • Group M fungicides.

Penncozeb 75DF Raincoat

(mancozeb)

Maestro 80DF

(captan)
2.25 to 4.25 kg/ha
(0.9 to 1.7 kg/acre)
2
  • Registered on cucumbers only.
  • Repeat at 5 to 7 day intervals.
  • Do not enter treated area for 48 hours.
  • Group M fungicide.

Supra Captan 80WDG

(captan)

Powdery Mildew

Bravo 500

(chlorothalonil)
4.8 L/ha
(1.9 L/acre)
1
  • Repeat at 7 day intervals.
  • Group M fungicide.

Echo 90DF

(chlorothalonil)
2.7 kg/ha
(1.1 kg/acre)
1
  • Repeat at 7 to 10 day intervals.
  • Maximum of 8 applications 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.
  • Group M fungicide.

Echo 720

(chlorothalonil)
3.3 L/ha
(1.3 L/acre)

Cueva

(copper octanoate)

Group M1

Use a 0.5% to 2% solution at 470 to 940 L/ha (190 to 380 L/acre) 1
  • For a 0.5% solution, mix 1 part Cueva to 200 parts water.
  • For a 2% solution, mix 1 part Cueva to 50 parts water.
  • Repeat at 7 to 10 day intervals.
  • Repeat at 5 to 7 day intervals following heavy rain or when disease pressure is high.
  • Do not make more than 15 applications per year.
  • Time applications so that 12 hours of dry weather follow application.
  • Do not re-enter treated area for 4 hours.
  • See this table sections above and below for control of Alternaria leaf blight, angular leaf spot and downy mildew.

Inspire

(difenoconazole)

Group 3
512 mL/ha
(207 mL/acre)
0
  • Also suppresses gummy stem blight.
  • Apply at 7 to 10 day intervals.
  • Maximum 2.04 L/ha (825 mL/acre) per crop per season.
  • Water volume varies for diseases. See label for details.
  • May be tankmixed with Revus or Bravo 500
  • For labeled diseases, follow most restrictive directions including rate, PHI, maximum applications and re-entry interval.

Nova 40W

(myclobutanil)

Group 3

175 g/ha (70 g/acre)

Apply in 250 L/ha (100 L/acre) of water
3
  • Repeat at a 10 to 14 day interval.
  • Do not apply more than 2 times per year.
  • Do not re-enter treated areas for 12 areas.

Proline 480 SC

(prothioconazole)

Group 3

210 to 420 mL/ha (85 to 170 mL/acre)

Apply in 100 L/ha (40 L/acre) of water at 275 kPa 
7
  • Also controls gummy stem blight.
  • Apply with a non-ionic surfactant, AgSurf or Agral 90 at 0.125% v/v.
  • Do not exceed 1.26 L/ha ( 510 mL/acre) per crop year.

Gummy stem blight:

  • Use the high rate.
  • Apply once as a soil drench.
  • Follow soil drench with foliar applications at 5 to 10 day intervals

Powdery mildew:

  • Apply as a foliar spray.
  • Repeat at 5 to 10 day intervals.

Aprovia

(benzovindiflupyr)

Group 7

500 to 750 mL/ha                         (200 to 300 mL/acre)

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

1
  • For control of gummy stem blight, use the high rate and apply in 190 L/ha (75 L/acre) of water.
  • Apply as a broadcast foliar.
  • Repeat using a 7 to day interval.
  • Do not apply more than 3 L/ha (1.2 L/acre) per season.
  • Observe a plantback interval of 6 months for crops not listed.
  • Do not re-enter treated area for 12 hours.
  • Also controls alternaria leaf spot.  See this Alternaria Leaf Spot section of this table for details.

Aprovia Top

(benzovindiflupyr/

difenoconazole)

Group 3 & 7

761 to 967 mL/ha (308 to 391 mL/acre

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

1
  • For suppression of gummy stem blight, use the high rate and apply in 190 L/ha (75 L/acre) of water.
  • Apply as a broadcast foliar spray.
  • Repeat using a 7 day interval.
  • Do not apply more than 3.9 L/ha (1.6 L/acre) per season.
  • Observe a plantback interval of 60 days for sweet corn and 6 months for crops not listed.
  • Do not re-enter treated area for 12 hours.
  • Also controls alternaria leaf spot.  See this Alternaria Leaf Spot section of this table for details.

Fontelis

(penthiopyrad)

Group 7
1.25 L/ha
(500 mL/acre)

Apply in 110 L/ha (45 L/acre) of water
1
  • Repeat at 7 to 14 day intervals.
  • Do not apply more than 4.9 L/ha (2.0 L/acre) per season.
  • Do not re-enter 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
0
  • For suppression of gummy stem blight, use the high rate.
  • 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.
  • Do not apply as a tankmix with any other fungicides, insecticides, herbicides, adjuvants, liquid fertilizers, nutrients or any other additives other than water.
  • 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.

Pyriofenone 300SC / Property 300SC

(pyriofenone)

Group U8

0.3 to 0.366 L/ha                               (120 to 148 mL/acre)

Apply in 200 to 1000 L/ha (80 to 400 L/acre) of water

0
  • Start applications prior to disease development.
  • Repeat using a 7 to 10 day interval beginning with inital flowering.
  • Do not apply more than 1.2 L/ha (0.5 L/acre) per year.
  • Do not make more than 2 consecutive applications of this product or other group U8 fungicide before rotating to a fungicide in a different group.
  • Observe a plantback interval of 1 year for cereal grains; and for all other crops not listed, observe a plantback interval of 30 days. 
  • Do not re-enter treated area for 12 hours.

Vivando SC

(metrafenone)

Group U8

0.750 to 1.12 L/ha                           (300 to 450 mL/acre) 0
  • Use with a non-ionic surfactant according to the adjuvant label.
  • Repeat at 7 to14 day intervals.
  • Do not make more than 3 applications per season.
  • Do not apply more than 3.36 L/ha per season.
  • Avoid using Vivando SC if it has been used on the area during the previous season. 
  • Do not re-enter treated area for 12 hours.

Quadris Top

(azoxystrobin/ difenoconazole)

Group 11 & 3

710 to 1000 mL/ha
(287 to 405 mL/acre)

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

1
  • Also suppresses gummy stem blight.
  • For gummy stem blight, apply in at least 190 L/ha (80 L/acre) of water.
  • Repeat at 7 to 14 day intervals
  • Do not apply more than 4 times per season.
  • Do not re-enter treated areas for 12 hours.
  • Observe a plant back interval of 60 days for crops not listed on this label or the Inspire label. 

Pristine WG

(boscalid and pyraclostrobin)

Group 7 & 11
0.9 to 1.3 kg/ha
(360 to 525 g  g/acre)
4
  • Repeat at 7 to 14 day intervals.
  • Maximum of 4 applications per season.
  • Do not apply more than 5.2 kg/ha (2.1 kg/acre) per season.
  • Do not re-enter for hand harvesting, thinning, pruning and turning for 3 days.  For all other activities do not re-enter for 12 hours.

Elatus

(benzovindiflupyr/

azoxystrobin)

Group 11 & 7

500 g/ha (202 g/acre)

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

1
  • Apply as a broadcast foliar application.
  • Repeat at 7 day intervals.
  • Do not apply more than 1.5 kg/ha (0.6 kg/acre) per season.
  • Observe a plantback interval of 6 months for crops not listed.
  • See this table section above for control of gummy stem blight and Anthracnose.

Cabrio EG

(pyraclostrobin)

Group 11
560 to 840 g/ha
(220 to 340 g/acre)

Apply in at least 350 L/ha (140 L/acre) of water.
3
  • Repeat at 7 to 14 day intervals.
  • Do not apply more than 4 times per season.
  • Do not enter treated area for hand-harvesting for 3 days and for all other activities, do not enter for 12 hours.
  • Do not use treated crop for feed.

Quintec

(quinoxyfen)

Group 13
300 to 440 mL/ha
(120 to 180 mL/acre)
3
  • REGISTERED ON MELON, PUMPKINS AND WINTER SQUASH.
  • Apply at 10 to 14 day intervals.
  • Maximum 4 applications per season.
  • Observe plant back interval of 1 year for cereals, all other crops not on label maybe be planted 30 days after last application.
  • Toxic to bees; do not apply to flowering crop.
  • Do not enter treated area for 12 hours.

Diplomat 5SC

(polyoxin D zinc salt)
 
Group 19
537 to 926 mL/ha
(217 to 375 mL/acre)
0
  • Repeat using a 7 to 14 day interval.
  • Do not apply more than 2.8 L/ha (1.1 L/acre) per season or 12 months.
  • May be used in the greenhouse.
  • Also suppresses gummy stem blight.

Double Nickel 55

(Bacillus amyloliqufaciens strain D747)

1 to 2.5 kg/ha
(0.4 to 1 kg/acre)

 

For smaller plants or low disease pressure: 0.5 to 1 kg/ha (200 to 400 g/acre).

0
  • Suppression only.
  • Apply as a foliar spray from fruit formation to end of crop maturity.
  • Repeat at 3 to 10 day intervals.
  • Do not use highly alkaline or highly acidic water to mix sprays.
  • If necessary, use a buffering agent to maintain a pH of 6 to 8 in the water of the tank. 
  • Do not re-enter treated area for 4 hours.
  • Group 44 fungicides.

Double Nickel LC

(Bacillus amyloliqufaciens strain D747)

5 to 12.5 L/ha
(2 to 5 L/acre)

 

For smaller plants or low disease pressure: 2.5 to 5 L/ha (1 to 2 L/acre).

MilStop

(potassium bicarbonate)

smileyUsed in organics
2.8 to 5.6 kg/ha
(1.13 to 2.27 kg/acre)

Apply in 1000 L/ha (400 L/acre) of water.
0
  • Suppression only.
  • Repeat using a 7 to 14 day interval.
  • Do not apply more than 10 times per season.
  • Do not enter treated area for 4 hours.
  • smileyMilstop products are OMRI-USA listed.  Check with your certification body before using in an organic operation.

Actinovate

(Streptomyces lydicus)
 
smileyUsed in organics
420 g/ha
(170 g/acre)\
 
Apply in 470 to 800 L/ha (190 to 320 L/acre) of water. 
0
  • Suppression only.
  • Repeat at 7 to 14 day intervals.
  • smileyActinovate products are OMRI-USA listed.  Check with your certification body before using in an organic operation.

Serenade Opti

(Bacillus subtilis)
 
smileyUsed in organics.
1.7 to 3.3 kg/ha
( 690 to 1300 g/acre)
0
  • Suppression only.
  • Begin applications soon after emergence or transplant.
  • Repeat applications using 7 to 10 day intervals
  • Also suppresses downey 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)
 
Note:  no longer produced.
 
smileyUsed in organics.
3.0 to 6.0 kg/ha
(1.2 to 2.4 kg/acre)
 

Tivano

(Citric acid & lactic acid)

Fermentation products of Lactobacillus casei strain LPT-111
8% dilution in water solution 0
  • Suppression only.
  • USE ONLY ON SQUASH AND PUMPKINS.
  • Apply in 500 to 700 L/ha (200 to 280 L/acre) of water.
  • Repeat at 7 to 10 day intervals.
  • Shake well before using.
  • Do not re-enter until spray has dried.

Regalia Maxx

(extract of Reynoutria sachalinensis)

0.125 to 0.25% v/v

Apply in 500 to 1000 L/ha (200 to 400 L/acre) of water

0
  • Suppression only.
  • Also suppresses downy mildew.
  • Repeat at 7 to 10 day intervals.
  • Approved for use in organics.

Influence WP

(garlic powder)

6.9 to 8.0 kg/ha (2.8 to 3.2 kg/acre)

Apply in 700 L/ha (280 L/acre) of water.
0
  • Suppression only.
  • Registered on cucumbers, pumpkins, winter and summer squash.
  • Repeat at 7 to14 day intervals.
  • Do not make more than 4 applications per season.
  • Individuals who are sensitive or allegic to garlic should avoid handling this product.
  • Do not re-enter treated area until spray is dried.

Purespray Green Spray Oil 13E

(mineral oil)
 
smileyUsed in organics
10 L of product in 1000 L of water (1% solution)  
  • Suppression only.
  • Use up to 1000 L/ha (400 L/acre) spray volume to ensure thorough coverage.
  • Repeat at 7 to 14 day intervals.
  • Do not make more than 8 summer spray applications per growing season.
  • For first use on a new variety, test spray a small field area to check for plant tolerance prior to adoption as a general field practice.
  • A period of 14 days must elapse before chlorothalonil (Bravo) is applied before or after an application of Purespray Green Spray Oil 13E.
  • Do not apply during periods of drought, when plants exhibit moisture stress. 
  • Do not enter treated area for 12 hours.
  • smileyPurespray Green Spray Oil 13E (PCP# 27666) is OMRI-Canada listed.  Check with your certification body before using in an organic operation.

Downy Mildew

Bravo 500

(chlorothalonil)
4.8 L/ha
(1.9 L/acre)
1
  • Repeat at 7 day intervals.
  • Do not apply more than 7 times per season.
  • Group M fungicide.

Penncozeb 75DF

(mancozeb)
1.1 to 3.25 kg/ha
(0.44 to 1.3 kg/acre)
14
  • Start applications when runners begin to form or at first sign of disease.
  • Repeat at weekly intervals.
  • Do not enter treated area for 24 hours.
  • Group M fungicides.

Penncozeb 75DF Raincoat

(mancozeb)

Cueva

(copper octanoate)

Group M1

Use a 0.5% to 2% solution at 470 to 940 L/ha (190 to 380 L/acre) 1
  • For a 0.5% solution, mix 1 part Cueva to 200 parts water.
  • For a 2% solution, mix 1 part Cueva to 50 parts water.
  • Repeat at 7 to 10 day intervals.
  • Repeat at 5 to 7 day intervals following heavy rain or when disease pressure is high.
  • Do not make more than 15 applications per year.
  • Time applications so that 12 hours of dry weather follow application.
  • Do not re-enter treated area for 4 hours.
  • See this table sections above for control of Alternaria leaf blight, angular leaf spot, and powdery mildew.

Reason 500SC

(fenamidone)

Group 11
400 mL/ha
(160 mL/acre)
14
  • Repeat at 5 to 10 day intervals.
  • Do not apply more than 4 times per year.
  • Do not enter treated area until residues have dried.
  • Apply in 300 to 600 L/ha(120 to 240 L/acre) of water.

Orondis

(oxathiapiprolin)

Group 49

88 to 350 mL/ha (35 to 140 mL/acre

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

0
  • Repeat using a 5 to 14 day interval.
  • 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.

Cyazofamid 400SC (formerly Ranman 400SC

(cyazofamid)
150 to 200 mL/ha
(60 to 80 mL/acre)

Apply in 200 to 600 L/ha (80 to 240 L/acre) of water.
1
  • Repeat at 7 to 10 day intervals.
  • Do not apply more than 6 times per year.
  • Tank mix with a non-ionic or organosilicone surfactant such as Sylgard 309 at the manufacturer's label recommendations.
  • Observe a 30 day plantback interval for crops not listed.
  • Do not enter treated area for 12 hours.
  • Also controls Pythium damping-off and Root Rot (Pythium spp.) when applied as a soil drench to greenhouse cucumber transplants for field production.  See Root Rot section of this table for details.
  • Group 21 fungicides.

Torrent 400 SC

(cyazofamid)

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
  • Supression only.
  • Repeat at 7 to 14 day intervals.
  • Do not make more than 7 applications per season.
  • Do not re-enter treated area for 12 hours.

Confine Extra        

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

Group 33

3 to 5 L/ha
(1.2 to 2.0 L  /acre)

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

1
  • Suppression only.
  • Repeat using a 7 to 14 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.

Revus

(mandipropamid)

Group 40

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

Apply in at least 100 L/ha (40 L/acre) of water
0
  • Suppression only.
  • 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.
  • May be tank-mixed with Bravo 500. Check Bravo Label for PHI and re-entry intervals.
  • Do not apply to greenhouse-grown seedlings to be transplanted in the field, until after they have been transplanted out.
  • Do not enter treated area for 12 hours.

Forum

(dimethomorph)
 
Group 40

450 mL/ha
(182 mL/acre)

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

2
  • 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.
  • Repeat using a 5 to 10 day spray interval.
  • Maximum of 5 applications per season
  • Observe a plant back restriction of 120 days for a new crop in the treated area.
  • Do not re-enter to perform hand-harvesting, hand pruning, thinning, leaf-pulling or turning activities for 2 days.
 

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.
1
  • Repeat at 5 to 7 day intervals.
  • Do not apply more than 3 times per season.
  • Use a spreading/penetrating  adjuvant.
  • Do not re-enter for hand harvesting, pruning or thinning for 1 day.  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.

Presidio

(fluopicolide)

Group 43

292 mL/ha
(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 different mode of action listed in this table for downy mildew. Follow most restrictive directions including rate, PHI and re-entry interval.
  • Repeat using a 7 to 10 day interval.
  • Do not apply more than 2 times per season.
  • Maximum of 880 mL/ha (356 mL/acre) per season
  • Do not enter treated for 12 hours.

Serenade Opti

(Bacillus subtilis)
 
smileyUsed in organics.
0.6 to 1.7 kg/ha
(240 to 690 g/acre)
0
  • Suppression only.
  • Begin applications soon after emergence or transplant.
  • Repeat using a 7 to 10 day interval.
  • Also suppresses powdery mildew.  See Powdery 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)
 
Note:  no longer produced.
 
smileyUsed in organics.
1.0 to 3.0 kg/ha
(0.40 to 1.2 kg/acre)

Root Rot

Cyazofamid 400SC (formerly Ranman 400SC)

(cyazofamid)

30 mL/100L water 60
  • REGISTERED ON GREENHOUSE CUCUMBER TRANSPLANTS FOR FIELD PRODUCTION.
  • Controls Pythium damping-off and Root Rot (Pythium spp.)
  • 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 controls downy mildew when applied as a foliar spray to field cucurbits.  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
  • Suppresses Fusarium Root Rot.
  • 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.

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.

*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.

smileyOMRI-USA = Organic Materials Review Institute of USA.

 

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