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Publication 371S - 2007 Supplement
Growing Greenhouse Vegetables

Author: OMAFRA Staff
Creation Date: 12 July 2007
Last Reviewed: 12 July 2007
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Table of Contents

Introduction

This supplement contains updates to pesticides registered up until 2007. For complete information, please refer to the full edition of Publication 371 - Growing Greenhouse Vegetables, released in 2005.

Refer to this website for updates throughout the year. Printed copies are available from OMAFRA Resource Centres.

Replace Table 15-1, Table 15-2, Table 15-3, Table 15-4, Table 15-5, Table 15-6, Table 15-7
and Table 15-8 on pages 125 to 132 with the new tables below.

Table 15-1: Tomato Pests

Pesticide

Rate

Pest

Pre-harvest Interval
(days)

Remarks

Ambush 50 EC
or Pounce EC

200 mL/1,000 L
260 mL/1,000 L

whiteflies

1

Apply to achieve thorough coverage. Repeat as necessary.

Avid

30 mL/100 L

two-spotted spider mite
leafminer

3

No more than 5 applications per crop cycle.

Bioprotec

1.8 L/1,000 L water

0.9-1.8 L/1,000 L water.

cabbage loopers

tomato hornworm

0

Use diluted spray within 12 hr. Use product within 6 months of manufacture date. Addition of a wetting agent is recommended to improve distribution on foliage.

Confirm 240F

0.6 L/ha

cabbage loopers

2

Re-entry period is 12 hr. Application interval at least 10 days. Do not exceed 4 applications/yr.

DDVP 20%EC

6 ml/L

aphids, whiteflies

7

Use cautiously as crop damage can occur, particularly under hot, humid conditions. Thoroughly ventilate before re-entering on the day following treatment.

Dibrom

10 mL/100 m3
Apply undiluted to cold pipes, then heat to 41°C and close greenhouse for at least 4 hr.

aphids, two-spotted spider mites, whiteflies

1

May cause injury to flowers.Ventilate greenhouse properly before re-entering.

Dipel 2X DF

75-150 g/250 L/ 4,000 m2

cabbage loopers

 

Apply to upper and lower leaf surfaces to runoff. Repeat applications needed with new hatch.

Distance

45 mL/100 L

whiteflies

3

Maximum number of applications per crop cycle is 2. Make 1st application when adults begin to appear.
Restricted entry interval = 12 hr.

DynoMite

284 g/ha using 1,000 L water/ha

two-spotted spider mites

2

Maximum number of applications per crop cycle is 2. Apply at intervals of at least 28 days.

Endeavor 50 WG

100-200 g product/ha in a minimum of 1,000 L water/ha

Green peach aphid, melon aphid

3

No more than 2 applications per crop cycle/year/greenhouse. Do not repeat applications for at least 7 days.

Floramite SC

133 mL/400 L

two-spotted spider mites

0

 

Only 2 applications per crop cycle
Restricted entry interval = 12 hr.

Foray 48B

80-200 mL/1,000 m2

cabbage loopers

0

 

Forbid 240 SC

30-50 mL/100 L

two-spotted spider mites,
whiteflies

3

Maximum number of applications per crop cycle is 2.
Restricted entry interval = 12 hr.

Intercept

16 g/80 L water/1,000 mature plants

whiteflies, aphids

1

Do not apply more than once per season. There may be repellent effects on bumble bees and negative effects on some beneficials.

Insecticidal Soap

1-2 L/100 L

aphids, two-spotted spider mites, whiteflies, earwigs, psyllids

 

May cause damage to flowers under high temperature conditions.

Nicotine Smoke

1 can/300 m3

aphids, thrips

3

Ventilate greenhouse properly before re-entering.

Sluggo

25-50 kg/ha (2.5-5 g/m2)

slugs and snails

 

Re-apply bait as needed or at least every 2 weeks if slugs and snails continue to be a problem.

Thiodan 4 EC
Thiodan 50 WP

1.25-1.5 L/1,000 L
1-1.5 kg/ha

aphids, whiteflies

2

 

3M Sprayable Tomato Pinworm Pheromone

200mL/ha

tomato pinworm

 

Repeat applications are dependent on prest pressure and should, in general, be done 3-4 weeks apart.

Vectobac

2-8 L/1,000 L

fungus gnats

0

Do not mix and apply with fertilizers or fungicides containing copper or chlorine as this may neutralize the active ingredients.

Vendex 50W

50 g/100 L

two-spotted spider mites

5

 

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Table 15-2. Tomato Diseases

Pesticide

Rate

Disease

Pre-harvest Interval (days)

Remarks

Botran 75WP

1.75 kg/1,000 L

Botrytis grey mould

1

Seedlings may be injured by drenching.

Decree

 

1.5 kg/ha

Botrytis grey mould

1

Do not make more than 3 applications per crop cycle

Fixed Copper 50W

3 kg/1,000 L/ha

Bacterial canker

 

7-10 day interval

Maestro 80DF

1.25 kg/1,000 L apply 50-85 L/100 m2

damping-off in seedlings

 

 

Manzate DF

2.4 kg/ha

early and late blight, septoria leaf spot

7

 

MilStop

5.6 kg/ha

powdery mildew

 

Do not mix with with other soluble fertilizers or pesticides; not compatible with mild alkaline solutions. Addition of surfactant or wetting agent is not required.

Restricted entry interval = 4 hr.

Mycostop

Immediately after transplanting:
10-50 mg/plant or 20-100 mL/plant of 0.05% suspension

fusarium; root diseases; stem rot

0

Treatments to be repeated at intervals of 3-6 weeks depending on disease pressure.

Nova

340 g/ha (1,000 L water/ha)

powdery mildew

3

Apply no more than 2 applications/yr.

RootShield Drench

60-90 g/100 L

Pythium, Rhizoctonia, Fusarium

 

Effective when root zone more than 100C

 

RootShield Granules

600 g/m3 planting mix or soil

Pythium, Rhizoctonia, Fusarium

 

Effective when root zone more than 100C

 

Rovral 50WP

1 kg/1,000 L

Botrytis grey mould

2

 

Sulphur (Bartlett's Microscopic Sulphur 92 %)

750 g/1,000 L/ha

powdery mildew

1

Maximum of 10 applications per crop cycle. May cause slight foliage damage.

Supra Captan 80W

 

63-107 g/100 sq.m as a soil treatment

damping off, fungus root rot diseases

 

Use 1.25 kg per 1,000 L water and apply at rates of 50-85 L /100 m2. Work into the upper 7.5-10 cm of soil before planting.

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Table 15-3. Cucumber Pests

Pesticide

Rate

Pest

Pre-harvest Interval (days)

Remarks

Ambush 50 EC
or Pounce EC

200 mL/1,000 L
260 mL/1,000 L

whiteflies

1

Apply to achieve thorough coverage. Repeat as necessary.

Avid

30 mL/100 L

two-spotted spider mite
leafminer

3

No more than 5 applications per crop cycle.

Bioprotec

1.8 L/1,000 L water

cabbage loopers

0

Use diluted spray within 12 hr. Use product within 6 months of manufacture date. Addition of a wetting agent is recommended to improve distribution on foliage.

DDVP 20%EC

6 mL/L

aphids, whiteflies

7

Use cautiously as crop damage can occur, particularly under hot, humid conditions. Thoroughly ventilate before re-entering on the day following treatment.

Dibrom

10 mL/100 m3
Apply undiluted to cold pipes, then heat to 41°C & close greenhouse for at least 4 hr

aphids, spider mites, whiteflies, mealy bugs, leafrollers

1

May cause injury to flowers.
Ventilate greenhouse properly before re-entering.

Distance

45 mL/100 L

whiteflies

3

Maximum number of applications per crop cycle is 2. Make 1st application when adults begin to appear.
Restricted entry interval = 12 hr.

DynoMite

284 g/ha
1,000 L water/ha

two-spotted spider mites

2

Maximum number of applications per crop cycle is 2. Apply at intervals of at least 28 days.

Floramite SC

133 mL/400 L

two-spotted spider mites

1

Only 2 applications per crop cycle
Restricted entry interval = 12 hr.

Foray 48B

80-200 mL/1,000 m2

cabbage loopers

0

 

Forbid 240 SC

30-50 mL/100 L

two-spotted spider mites,
whiteflies

3

Maximum number of applications per crop cycle is 2.
Restricted entry interval = 12 hr.

Intercept

16 g/80 L water/1,000 mature plants

whiteflies, aphids

1

Do not apply more than once per season. There may be negative effects on some beneficials.

Insecticidal Soap

1-2 L/100 L

aphids, two-spotted spider mites, whiteflies, earwigs, psyllids

 

May cause damage to plant under high temperature conditions.

Nicotine Smoke

1 can/300 m3

aphids, thrips

3

Ventilate greenhouse properly before re-entering.

Sluggo

25-50 kg/ha (2.5-5g/m2)

slugs and snails

 

Re-apply bait as needed or at least every 2 weeks if slugs and snails continue to be a problem.

Thiodan or Thionex 4 EC
Thiodan or Thionex 50 WP

1.25-1.5 L/1,000 L

1-1.5 kg/ha

aphids, whiteflies

2

Spray when insects are first observed.

Vectobac

2-8 L/1,000 L

fungus gnats

0

Do not mix and apply with fertilizers or fungicides containing copper or chlorine as this may neutralize the active ingredients.

Vendex 50W

50 g/100 L

two-spotted spider mites

3

 

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Table 15-4. Cucumber Diseases

Pesticide

Rate

Disease

Pre-harvest Interval (days)

Remarks

Microscopic sulphur

105 g/100 L

powdery mildew

1

Apply at weekly intervals. Can cause damage if applied under hot, humid conditions.

MilStop

5.6 kg/ha

powdery mildew

 

Do not mix with with other soluble fertilizers or pesticides; not compatible with mild alkaline solutions. Addition of surfactant or wetting agent is not required.

Restricted entry interval = 4 hr.

Mycostop

Immediately after transplanting: 10-50 mg/ plant or 20-100 mL/plant of 0.05% suspension

fusarium; root diseases; stem rot

0

Treatments to be repeated at intervals of 3-6 weeks depending on disease pressure.

Nova

340 g/ha

powdery mildew, gummy stem blight

2

Do not apply more than 6 times per year.

Previcur

10 mL/10 L of water and apply this solution at rate of 100-200 mL/ plant. Use higher rate for 2nd and 3rd applications.

pythium root rot

14

Maximum of 3 applications per season.

Occasional slight damage may occur following overhead drenching of recently planted seedlings.

Ridomil Gold

Apply 250 mL of solution (0.75-1.25 mL/10L) at base of plant after transplanting.

pythium root rot

21

1 application per crop cycle; not for cucumbers grown in soil.

RootShield Drench

60-90 g/100L

Pythium, Rhizoctonia, Fusarium

 

Effective when root zone more than 100C

RootShield Granules

600 g/m3 planting mix or soil

Pythium, Rhizoctonia, Fusarium

 

Effective when root zone more than 100C

Sporodex

7.5 L/ha

powdery mildew

0

Begin weekly applications at first sign of mildew.

Re-entry period is 4 hr.

Rovral

1 kg/1,000 L

Botrytis grey mould, gummy stem blight

2

 

Microfine Sulphur 92 (Zeneca)

150 g per 100 L

powdery mildew

1

Can cause damage if applied under hot, humid conditions.

Supra Captan 80W

 

63-107 g/100 sq.m as a soil treatment

damping off, fungus root rot diseases

 

Use 1.25 kg per 1,000 L water and apply at rates of 50-85 L /100 m2. Work into the upper 7.5-10 cm of soil before planting.

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Table 15-5. Pepper Pests

Pesticide

Rate

Pest

Pre-harvest Interval (days)

Remarks

Avid

30 mL/100 L

two-spotted spider mite

3

 

Basudin 500 EC
or Diazinon 500

230 mL/250 L/4,000 m2
0.575 L/625 L water

aphids

5

 

Bioprotec

1.8 L/1,000 L water

cabbage loopers

0

Use diluted spray within 12 hr. Use product within 6 months of manufacture date. Addition of a wetting agent is recommended to improve distribution on foliage.

Confirm

0.5 L/ha; apply in 4,000 L water/ha

European corn borer

3

Ensure good coverage and apply at intervals of approximately 7 days. Do not exceed 4 applications per year. Re-entry interval is 12 hr.

Dipel 2X DF

75-150 g/250 L/ 4,000 m2

cabbage loopers

 

Apply to upper and lower leaf surfaces to runoff. Repeat applications needed with new hatch.

Distance

45 mL/100 L

whiteflies

3

Maximum number of applications per crop cycle is 2. Make 1st application when adults begin to appear.

Restricted entry interval = 12 hr.

DynoMite

284 g/ha

two-spotted spider mite

3

Maximum number of applications per year is 2.

Endeavor 50 WG

100-200 g product/ha in a minimum of 1,000 L water/ha

green peach aphid, melon aphid

3

No more than 2 applications per crop cycle/year/greenhouse. Do not repeat applications for at least 7 days.

Floramite SC

133 mL/400 L

 

two-spotted spider mites

1

Only 2 applications per crop cycle

Restricted entry interval = 12 hr.

Foray 48B

80-200 mL/1,000 m2

cabbage loopers

0

 

Forbid 240 SC

30-50 mL/100 L

two-spotted spider mites,

whiteflies

3

Maximum number of applications per crop cycle is 2.

Restricted entry interval = 12 hr.

Insecticidal Soap

1-2 L/100 L

aphids, spider mites, whiteflies, earwigs, psyllids

5

May cause damage to plant under high temperature conditions

Intercept

 

4.1 g/1,000 seedlings in a solution application rate of 8 L/100 m2 of seedling trays

aphids, whiteflies

3

Apply to 2-3 week old seelings in flats. One appllication per growing season

Nicotine Smoke

1 can/300 m3

aphids, thrips

5

Ventilate greenhouse properly before re-entering.

Sluggo

25-50 kg/ha (2.5-5g/m2)

slugs and snails

 

Re-apply bait as needed or at least every 2 weeks if slugs and snails continue to be a problem.

Thiodan 4 EC

1.25-1.5 L/1,000 L

lygus bug or tarnished plant bug, aphids

2

Do not apply more than twice per season.

Vectobac

2-8 L/1,000 L

fungus gnats

0

Do not mix and apply with fertilizers or fungicides containing copper or chlorine as this may neutralize the active ingredients.

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Table 15-6. Pepper Diseases

Pesticide

Rate

Disease

Pre-harvest Interval (days)

Remarks

Maestro 80DF

1.25 kg1,000 L - apply 50-85 L/100 m2

damping-off in seedlings

 

 

Microscopic Sulphur 92%

543-760 g/1000L/ha

 

powdery mildew

 

Apply as required on a minimum of 14-day interval for up to 10 applications per crop cycle.

MilStop

5.6 kg/ha

powdery mildew

 

Do not mix with with other soluble fertilizers or pesticides; not compatible with mild alkaline solutions. Addition of surfactant or wetting agent is not required.

Restricted entry interval = 4 hr.

Mycostop

Immediately after transplanting: 10-50 mg/plant or 20-100 mL/plant of 0.05% suspension

fusarium; root diseases; stem rot

0

Treatments to be repeated at intervals of 3-6 weeks depending on disease pressure

Nova

340 g/ha using 1,500-3,000 L water/ha

powdery mildew

3

Apply as soon as possible after initial infection and again 12 days later when disease pressure warrants control. Maximum number of applications per crop cycle is 3.

Re-entry interval is 12 hr.

Supra Captan 80W

 

63-107 g/100 m2 as a soil treatment

Damping off, fungus root rot diseases

 

Use 1.25 kg per 1,000 L water and apply at rates of 50-85 L /100 m2. Work into the upper 7.5-10 cm of soil before planting.

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Table 15-7. Lettuce Pests

Pesticide

Rate

Pest

Pre-harvest Interval
(days)

Remarks

Bioprotec

1.8 L/1,000 L water

cabbage loopers

0

Use diluted spray within 12 hr. Use product within 6 months of manufacture date. Addition of a wetting agent is recommended to improve distribution on foliage.

Confirm 240F

0.6 L/ha

cabbage loopers

14

Re-entry period is 12 hr. Application interval 10-14 days. Do not exceed 2 applications/ year.

Foray 48B

80-200 mL/1,000 m2

cabbage loopers

0

 

Insecticidal Soap

1-2 L/100 L

aphids, spider mites, whiteflies, earwigs, psyllids

 

May cause damage to plant under high temperature conditions.

Intercept 60WP

 

aphids

21

 

Malathion 25W

2.75-5.5 kg/ha

aphids, caterpillars, spider mites, thrips, whiteflies

Leaf = 21

Head = 7

Do not apply more than twice per season.

Nicotine Smoke

1 can/300 m3

aphids, thrips

7

Ventilate greenhouse properly before re-entering.

Thiodan 4 EC

1.25-1.5 L/1,000 L

aphids

14

Only one application per crop; low volume mist or high volume spray.

Vectobac

2-8 L/1,000 L

fungus gnats

0

Do not mix and apply with fertilizers or fungicides containing copper or chlorine as this may neutralize the active ingredients.

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Table 15-8. Lettuce Diseases

Pesticide

Rate

Disease

Pre-harvest Interval (days)

Remarks

Decree

 

1.5 kg/ha

Botrytis grey mould

3

Do not make more than 2 applications per crop cycle

Rovral

1 kg/1,000 L

grey mould

14

 

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Replace Appendix F with the new version below

Appendix F. Ontario Ministry of the Environment Pesticide Control Offices

REGION
County

Address

Telephone

Central Region
Toronto, Halton, Peel York, Durham


5775 Yonge St., 8th Floor
Toronto, Ontario M2M 4J1


416-326-3671
Toll Free 1-800-810-8048
Fax 416-325-6345

West-Central Region
Haldimand-Norfolk, Niagara, Hamilton-Wentworth, Dufferin, Wellington, Waterloo, Brant


Ontario Government Building
119 King St. W., 12th Floor
Hamilton, Ontario L8P 4Y7


905-521-7667
Fax 905-521-7820

Eastern Region
Frontenac, Hastings, Lennox & Addington, Prince Edward, Leeds & Grenville, Prescott & Russell, Stormont/Dundas & Glengarry , Haliburton, Peterborough, Victoria, Northumberland, Renfrew, Ottawa-Carleton, Lanark, District of Nipissing (Twsps of Airy, Murchison, Dickens, Lyell and Sabine)


133 Dalton Ave.
P.O. Box 820
Kingston, Ontario K7L 4X6


613-549-5047
Toll Free 1-800-267-0974
Fax 613-548-6908

Southwestern Region
Elgin, Middlesex, Oxford, Essex, Kent, Lambton, Bruce, Grey, Huron, Perth, Simcoe


733 Exeter Rd.
London, Ontario N6E 1L3


519-873-5041
519-873-5048
Fax 519-873-5020

Northern Region
Manitoulin, Nipissing, Parry Sound, Sudbury, Algoma East, Cochrane East, Muskoka,


199 Larch St., Ste. 1101
Sudbury, Ontario P3E 5P9


705-564-3237
Fax 705-564-4180

Kenora, Rainy River, Thunder Bay , Algoma West, Cochrane West, Timmins

435 James St. S., Ste. 331
Thunder Bay, Ontario
P7E 6S7

807-475-1205
Fax 807-475-1745

Standards Development Branch

Pesticides Section
40 St. Clair Ave. W., 7th Floor
Toronto, Ontario M4V 1M2

416-327-5519
Fax 416-327-2936

Approvals Branch

Pesticides Licensing2 St. Clair Ave. W., 12A Floor
Toronto, Ontario M4V 1L5

416-314-8001
Fax 416-314-8452

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This supplement provides updates to information in Publication 371. Each year the appropriate sub-committee of the Ontario Pest Management Research and Services Committee reviews the pesticides listed in this publication. To the best knowledge of the committee, at the time of printing, the pesticide products listed in this publication were:

  • federally registered
  • classified by the Ministry of the Environment.

The information in this publication is general information only. The Ministry of Agriculture, Food and Rural Affairs does not offer any warranty or guarantee, nor does it assume any liability for any crop loss, animal loss, health, safety or environmental hazard caused by the use of a pesticide mentioned in this publication.

This publication lists a number of brand names of pesticides. It is neither an endorsement of the product nor a suggestion that similar products are ineffective.

The Pesticide Label

Consult each product label before you use a pesticide. The label provides specific information on how to use the product safely, hazards, restrictions on use, compatibility with other products, the effect of environmental conditions, etc.

The pesticide product label is a legal document. It is against the law to use the product in any other way.

Federal Registration of Pesticide Products

The Pest Management Regulatory Agency (PMRA) of Health Canada registers pesticide products for use in Canada based on following an evaluation of scientific data to ensure that the product has merit and value; and the human health and environmental risks associated with its proposed use are acceptable.

  1. Full Registration
    • Pesticide registrations are normally granted for a period of five years, subject to renewal.
  2. Temporary Registration
    • Temporary registration may be granted for a period not to exceed one year, where the registrant agrees to produce additional scientific or technical information, or the pesticide is used for emergency control of a serious pest outbreak.

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Maximum Residue Limits

Health Canada has established maximum residue limits (MRLs) for pesticides. Processors or retailers may demand more restrictive limits. Growers should seek advice of their intended market to determine if more restrictive limitations apply. Keep accurate and up-to-date records on pesticide use in each crop.

Supplemental Labels

You MUST obtain a supplemental label and follow all the label directions when PMRA approves new uses for a registered pesticide that do not appear on the current label.

Examples of when you must use a supplemental label include:

  • Temporary Registrations for Emergency Use
  • Minor Use Label Expansion

 You can obtain a copy of a supplemental label from the pesticide manufacturer or pesticide vendor, the grower association that sponsored the emergency registration or minor use, from OMAFRA or PMRA's Pest Management Information Service.

For more information on the federal registration status check the PMRA website at www.hc-sc.gc.ca/pmra-arla or call 1-800-267-6315.

Regulation of Pesticides in Ontario

The Ministry of the Environment is responsible for regulating pesticide sale, use, transportation, storage and disposal in Ontario. Ontario regulates pesticides by placing appropriate education, licensing and/or permit requirements on their use, under the Pesticides Act and Regulation 914.

All Pesticides must be used in accordance with requirements under the Pesticides Act and Regulation 914. The act and Regulation are available on the e-laws website at www.e-laws.gov.on.ca or call Publications Ontario Toll-Free number: 1-800-668-9938 or 416-326-5300.

Classification of Pesticides

The Ontario Pesticides Advisory Committee (OPAC) is responsible for reviewing and recommending to the Ministry of the Environment, the placement of pesticide products into one of six schedules used to control sale and use. Once approved by the Ministry of the Environment, classified products are posted on the OPAC website: www.opac.gov.on.ca. For more information call OPAC at 416-314-9230.

Certification and Licensing

Growers and their Assistants

For information about certification for growers and training for assistants check the Ontario Pesticide Education Program website: www.ridgetownc.uoguelph.ca/opep/ or call 1-800-652-8573.

Commercial Applicators and their Assistants

For more information about exterminator certification and licensing and technician training check the Ontario Pesticide Training & Certification website at www.ridgetownc.uoguelph.ca/optc or call
1-888-620-9999.

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For more information:
Toll Free: 1-877-424-1300
Local: (519) 826-4047
E-mail: ag.info.omafra@ontario.ca