Category Archives: Root Veg

Potato module now available on Ontario Crop IPM

A potato IPM training module has been launched and can be found on the Ontario CropIPM website here: http://www.omafra.gov.on.ca/IPM/english/index.html

The module is a great educational tool with information for the common insect pests, diseases, viruses and disorders of potatoes in Ontario. For each pest or disease, summarized information can be found in the Beginner tab and more detailed information can be found under the Advanced tab. In the “often confused with” section of the entries you can view side-by-side photos of insects/disease/disorders that cause similar symptoms. You can also find more information on soil diagnostics, weed identification, herbicide injury,  and links to additional resources.

Make sure to bookmark the page today and use it as a resource for any IPM and pest related issues on potatoes. Continue reading Potato module now available on Ontario Crop IPM

Flea Beetle Feeding Damage Found on Carrots in Ontario

Dennis Van Dyk, OMAFRA, Guelph; Manju Chandran and Mary Ruth McDonald, University of Guelph, Muck Crops Research Station.

For the first time in Ontario, feeding damage caused by flea beetle larvae has been confirmed in a commercial carrot field. The damage is characterized by irregularly shaped cavities along the length of the taproot (Figure 1). A trail of smaller feeding sites can sometimes be seen travelling down the length of the carrot (Figure 2).

flea beetle feeding
Figure 1. Large amounts feeding damage caused by flea beetle larvae

Continue reading Flea Beetle Feeding Damage Found on Carrots in Ontario

The 2015 season: how is the potato crop doing?

Eugenia Banks, OMAFRA

Growing potatoes is always a challenge for Ontario potato producers.  Mother Nature dictates crop development from planting until harvest, and whatever she decides is beyond growers’ control.

April was a relatively quiet, spring-transition month. There were, however, a few typical storm systems that brought moderate amounts of rain. Planting started in Leamington just before Easter; by April 15, the sprouts of early varieties such as Dakota Pearl were looking healthy and vigorous.

Planting was delayed a bit by cool weather and the occasional rain shower in other areas of Ontario.  May was very dry which resulted in non-stop planting.  A large potato producer in Shelburne told me that he finished planting in May, something he had not done in years.  Continue reading The 2015 season: how is the potato crop doing?

First occurrence of potato late blight in Ontario in 2015

Eugenia Banks, Potato Specialist, OMAFRA

On July 9, late blight was found in a potato field near Orangeville. This is the first occurrence of potato late blight in Ontario in 2015. Infected plants were removed, and the grower is following an aggressive fungicide spray program, preventative sanitation practices and close field monitoring. All these management practices help to slow the rate of disease spread and to reduce the incidence of late blight. Samples were sent to Dr. Lawrence Kawchuck from Agriculture and Agri-Food Canada in Lethbridge. Dr. Kawchuck will identify the strain that caused this late blight outbreak.

Late blight is one of the most devastating diseases of potatoes. If weather conditions are favorable and no effective fungicides are applied, late blight can destroy a potato field in 4 or 5 days. Continue reading First occurrence of potato late blight in Ontario in 2015