Some recent pesticide registrations for tomatoes and peppers

Janice LeBoeuf, OMAFRA Vegetable Crop Specialist, Ridgetown

Productactive ingredient Crop Pests Notes
Rimon 10 ECnovaluron Peppers European corn borer Minor use registration, June 2010.First application should be made just before egg hatch.
Oberon Flowablespiromesifen Fruiting vegetables Two-spotted spider mite, broad mite, whiteflies March 2010.
Dynasty 100 FS Seed Treatmentazoxystrobin Fruiting vegetables Seed rot and pre-emergence damping-off caused by Rhizoctonia solani Minor use registration, March 2010.For imported seed only. Not for domestic commercial or on-farm treatment.
Dual Magnum/ Dual II Magnums-metolachlor Non-bell peppers Weeds Minor use registration, February 2010.Previously registered on bell peppers only.
Echo 720/
Echo 90 DFchlorothalonil
Tomatoes Early blight, late blight, septoria leaf spot, anthracnose November 2009.
Actara 25 WGthiamethoxam Fruiting vegetables Aphids Minor use registration, October 2009.

New retail sign and label toolkit for vendors of Ontario fruit and vegetables

Janice LeBoeuf, OMAFRA Vegetable Crop Specialist, Ridgetown

Clear and accurate labelling and signage help consumers make informed purchasing decisions. If you sell Ontario-grown fruit and vegetables at the farm gate, roadside stands, farmers’ markets or any other retail location, your signs and labels must comply with Regulation 378, Grades – Fruit and Vegetables under the Farm Products Grades and Sales Act, which regulates the grading, packing, marking and marketing of designated farm products.

OMAFRA’s new Retail Sign and Label Toolkit provides tips and easy-to-use, downloadable templates and instructions.  For more information contact: 1-877-424-1300.

Changes to PMRA pesticide label search online

Janice LeBoeuf, OMAFRA Vegetable Crop Specialist, Ridgetown

Update: February 2011

The PMRA has now implemented a new pesticide label search online, but I’m happy to report that the pdf files of pesticide labels remain available online.  As in the previous search tool, you can open the pdf file of the label by clicking the registration number in the search results.  See the February 10, 2011 post for more information.

In the name of accessibility, the PMRA is removing the pdf files of pesticide labels from their online label search site.

In the past, you could visit their online pesticide label search tool to search by active ingredient, product name, keyword, or other criteria.  You could then click on the product registration number to open/print/download a pdf of the most up-to-date label.

Now, according to a notice on their website “full documentation (portable document format [pdf]) will only be available by request through email or postal mail.”  This is to be implemented this summer.

Tomato vine decline update

Janice LeBoeuf, OMAFRA Vegetable Crop Specialist, Ridgetown

In June, proactive examinations of tomato roots of healthy-looking plants showed that a number of tomato fields were showing root symptoms indicative of corky root, similar to those seen in 2009.  Typical symptoms on the roots include a lack of fine feeder roots, a small root system, and brown bands on the roots.  The outer layer of affected roots can often be stripped off very easily by pinching them between your thumb and finger.  Some roots have stubby, swollen stumps where the end of the root has died off.  In severe cases, the entire root systems turns brown and the outer portion of the roots rot off. (photos below)

In the last couple of weeks, above-ground symptoms of vine decline have also become evident in some fields.  This shows up as premature yellowing and death of foliage that cannot be explained by the presence of other foliar diseases (photos below).  Plants may also be stunted; not reaching the size that you would normally expect.  In 2009, above-ground symptoms seemed to come on very suddenly when hot, dry weather hit.

Management Continue reading Tomato vine decline update

Irrigation Plot Tour – Leamington

11:30 am to 1:30 pm, Wednesday, 04 August 2010

At the Farm of Wayne Palichuk, 1019 Mersea Rd. 5, Leamington, Ontario

Please pre-register by calling OMAFRA – Ridgetown at (519) 674-1690.

A three-year project entitled “Increasing water use efficiency and improved nutrient management for processing tomatoes” is underway at Palichuk Farm, Leamington, Ontario. The project is being managed by McGill University’s Brace Centre for Water Resources Management in collaboration with Palichuk Farm, OMAFRA, Hortau, and Agriculture and Agri-Food Canada. Funding for this 3-year project was received through the Environmental Sustainability component of OMAFRA’s 2008 New Directions Research Program. Continue reading Irrigation Plot Tour – Leamington

Late blight alert

Janice LeBoeuf, OMAFRA Vegetable Crop Specialist, Ridgetown

From Eugenia Banks, OMAFRA Potato Specialist, Guelph:  Yesterday late blight was found in a potato field near Simcoe. The field was senescing so late blight was not aggressive.  The field was topkilled immediately.

A standard tomato fungicide program for early blight, septoria, and anthracnose should provide protection against late blight infection when pressure is low, so there is no need to panic.  Continue to scout your fields carefully and review the symptoms of late blight and other problems that can cause similar symptoms.

Late Blight Update – None Reported in Ontario

Janice LeBoeuf, OMAFRA Vegetable Crop Specialist, Ridgetown

We continue to follow the news on late blight from neighbouring states and to check on fields with suspicious symptoms, but to date, there are no confirmed reports of late blight in Ontario.

It is important to scout your fields regularly and know the symptoms of late blight.  Remember that conventional tomato growers following a regular fungicide spray program (by calendar or TOMcast) for early blight, septoria leaf spot, and anthracnose, are also protecting the crop from late blight infection.

It is most likely that the first symptoms would show up in areas that have incomplete spray coverage (eg. gore rows), in fields where the fungicide interval was too long, or in organic systems where good options for protecting the crop are lacking.  Flooded, waterlogged fields where the plants are wet and under stress could also be more susceptible to infection.  In 2009, most conventional fields survived the late blight outbreak without harm.

If a late blight outbreak occurs in Ontario, OMAFRA will notify the industry and remind growers of the recommendations for controlling late blight.  Is it necessary to cover the crop with a systemic, targeted late blight fungicide at this time?  Since we haven’t found late blight in Ontario to date, the protectant fungicides are very suitable choices (continuing your regular fungicide schedule).  If an outbreak occurs in your region, however, that would be the time to consider adding the systemic products into the fungicide rotation.

Information for commercial vegetable production in Ontario