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VCR – Vegetable Crop Report – October 10, 2019

Ontario DD Map - September 27

 

NOTE: Degree Day data as of September 27, 2019. 

This will be the final week for the 2019 edition of the VCR. Thank-you to all who followed along this year!

Did you find the VCR helpful this growing season? Please let us know with a brief survey!

Temperature – Harvest continues to be underway for for remaining vegetable crops fields across the province . Cooler, seasonal temperatures have been seen in all growing regions with small localized patches of frost  reported in some low lying areas. Continue to monitor weather conditions and take appropriate measures to protect crops still in the field from frost damage where possible. 

Rainfall – September precipitation varied across the province. Continue (when possible) to avoid entering fields which are still wet from precipitation events or morning dew, especially in fields which may be a few a couple of weeks from harvest in the southern portions of the province. This will help to avoid the potential spread of pathogens from plant to plant in the field. Harvesting equipment should be cleansed between the harvesting of fields to avoid the spread of soil-borne pathogens.

Crop Updates

Brassica Crops – Harvest continues though out Ontario and the warm weather over the last two weeks has allowed many head brassicas to mature. Flea beetles continue to be a major pest in most areas. Alternaria and bacterial head rot has been a problem for some broccoli and cauliflower plantings. A clubroot pathotype study is underway; if you have Brassicas with clubroot and are interested in determining what pathotype of clubroot is present, E-mail travis.cranmer@ontario.ca for more information. Are you interested in pest and pathogen identification training? Save the date for the spring Brassica IPM workshop – Thursday, April 30th, 2020 at 1 Stone Road in Guelph. A registration announcement will be posted on the ONvegetables blog in early 2020.

Carrots – It was a great year for carrots as most fields look good above and below ground. Anecdotally cavity spot incidence was up this year, likely from the wet spring we experienced in most regions.  

Celery – Harvest is underway but overall it has been a decent growing season for celery. While there are multiple pathogens present causing celery leaf curl and other diseases, in general the disease incidence is low relative to other years. There is a celery IPM session planned for May 7th, 2020 at 1 Stone Road in Guelph. This workshop will cover scouting for pest and pathogens of celery along with carrots and onions. A registration announcement will be posted on the ONvegetables blog in early 2020.

Garlic – Garlic planting has started across SW Ontario for the 2020 crop. If you are purchasing planting stock, it is extremely important that you ensure that what you are planting is free of bulb and stem nematode. Even cloves with an intact basal plate and no observable damage may have nematodes present. The UofG Pest Diagnostic Clinic in Guelph as well as A&L labs in London conduct nematode testing. There will be another full day workshop in Guelph on December 4th from 9-4:30 that will cover every part of garlic production including clean seed, cultivar selection, seeding density, nutrient testing, scape removal, weed control, crop insurance, harvesting, grading, storing as well as scouting/pest management. If there is time at the end of the workshop we will go over a cost of production spreadsheet. To register, call the Agriculture Information Contact Centre at 1 877-424-1300. s. The level of thrips has reached the spray threshold in most areas. Downy mildew was confirmed in Ontario transplant onions a few weeks ago; but conditions have not been favourable for sporulation and infection in the major onion growing regions. Conditions were favourable for pink root and onion smut development this year and will impact the yield in many fields come harvest.

Onions  Harvest continues for dry bulb onions. Sporulation and infection may have been conducive for downy mildew in the Holland Marsh which has potential to damage late plantings of green onions. The level of Stemphylium leaf blight development seemed to be less than last year and the level of thrips this year was low in most areas. The level of pink root and onion smut seemed to be higher this year but overall yield and quality seems to be good across the province. There is a onion IPM session planned for May 7th, 2020 at 1 Stone Road in Guelph. This workshop will cover scouting for pest and pathogens of onions along with carrots and celery. A registration announcement will be posted on the ONvegetables blog in early 2020.

Peppers – Many processing and fresh market peppers are staying in the ground until frost, with hand harvesting continuing until then. Overall, the season seemed good for peppers. As of October 10, 2019, there have not been any pepper weevil caught on outdoor traps in Ontario.

Potatoes – Harvest continues at full speed with most growers on-schedule and storages filling fast. Overall quality looks great with yields variable across the board. Many non-irrigated fields just didn’t get enough rain during bulking to fulfill their potential while some irrigated fields and fields that caught the later rains bulked up nicely. We’ve seen a slight increase in scab incidence likely from the dry weather we experience during tuber initiation. Growers did an excellent job controlling late blight this season as there were no outbreaks, even with some stretches of susceptible weather later in the season

Tomatoes – Processing tomatoes are wrapping up harvest within the next week or so and fresh market tomatoes will continue until frost. Yields look average compared to other years, though there was a lot of variability between growers and varieties. Bacterial disease was a struggle in both the spring and late summer for many growers, due to the wet conditions.

 

NOTE: Data as of September 27, 2019

Pest Degree Day Forecasting

PestCarrot Rust FlyOnion Maggot Carrot WeevilAster LeafhopperTarnished Plant Bug Cabbage Maggot Seedcorn MaggotEuropean Corn Borer 
THRESHOLD329-395, 1399-1711210-700, 1025-1515138-156, 455+128+40+314-398, 847-960, 1446-1604200-350, 600-750, 1000-1150See legend below
Essex*26742488195716291177213024881470
Chatham-Kent*2451226617481425937191622661274
Norfolk**2340216116541339855181921611191
Huron***2108193614531154703160719361013
Wellington**206118921411111767115651892980
Simcoe County***2147197614901191739164619761051
Durham***2189201915371245789169220191105
Peterborough197218011315101658014721801879
Kemptville***2200202815421237771170020281089
Sudbury***18371680123996955713801680842

*- Bivoltine region for ECB. First Peak Catch: 300-350 DD, Second Peak Catch 1050-1100 DD

**- Overlap region for ECB. First Peak Catch : 300-350 DD  Second Peak Catch 650-700 DD, Third Peak Catch 1050-1100 DD

***-Univoltine region for ECB. Peak Catch 650-700 DD

Use these thresholds as a guide, always confirm insect activity with actual field scouting and trap counts.

Select a region below for the latest weather, crop and pest degree day information:

Essex County

Chatham-Kent County

Norfolk County

Wellington County

Simcoe County

Durham County

Peterborough

Kemptville

Sudbury

 

Essex County

EssexDDSeptember27

EssexTPSeptember27

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Chatham-Kent County

ChathamDDSeptember27ChathamTPSeptember27

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Norfolk County

NorfolkDDSeptember27NorfolkTPSeptember27

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Wellington County

WellingtonDDSeptember27WellingtonTPSeptember27

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Simcoe County

SimcoeDDSeptember27SimcoeTPSeptember27

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Durham County

DurhamDDSeptember27DurhamTPSeptember27

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Peterborough

PeterboroughDDSeptember27PeterboroughTPSeptember27

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Kemptville

KemptvilleDDSeptember27

KemptvilleTPSeptember27

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Sudbury

SudburyDDSeptember27SudburyTPSeptember27

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