Crop Protection
Gummy stem blight is a chronically occurring fungal disease that affects greenhouse cucumbers worldwide. It is caused by the fungus, Didymella bryoniae, which attacks all parts of the plant and can cause severe economic losses. Symptoms on stems consist of blackened lesions that may crack and produce a gummy, amber-coloured sap. Leaf symptoms include browning of leaf margins, and some of the affected margins can have V-shaped lesions, often with a yellow halo. Fruit symptoms are often not obvious externally, and usually consist of a tapering of the blossom end, which, when cut, is discoloured internally.
WEB EXCLUSIVE The pesticide ban: Ontario retailers react, Quebec retailer shares tips
We talked with Ontario garden centre retailers to see how the preparations for the April 22 pesticide ban are going and how they plan to educate shoppers about the changes.
April 3, 2009 - We talked with Ontario garden centre retailers to see how the preparations for the April 22 pesticide ban are going and how they plan to educate shoppers about the changes.
March 9, 2009 - Ontario’s cosmetic pesticides ban takes effect April 22, 2009. The ban protects Ontario families and children from the unnecessary risks of cosmetic pesticides by only allowing the use of certain lower-risk pesticides for controlling weeds and pests in lawns and gardens.
March 4, 2009, Ottawa — Agricultural and landscaping groups, along with Canada’s plant science industry, are disappointed with the Ontario government’s regulations banning the sale and use of pesticides for lawns and gardens.
Damping-off and root rot caused by Pythium spp. (species) is one of the most commonly occurring diseases in greenhouse crops. Most Pythium spp. principally infect young, succulent tissues and therefore infection is usually restricted to feeder roots or root tips of older plants.
Feb. 23, 2009 — “Pristine® Fungicide,” from BASF Canada, has received an Emergency Use label expansion for control of Gummy Stem Blight (Didymella bryoniae) and for suppression of powdery mildew (Podosphaera xanthii) in greenhouse cucumbers.
NEWS HIGHLIGHT

Gummy Stem Blight control
“Pristine Fungicide,” from BASF Canada, has received an emergency use label expansion for control of Gummy Stem Blight (Didymella bryoniae) and for suppression of powdery mildew (Podosphaera xanthii) in greenhouse cucumbers.
The Ontario government recently announced that the province's proposed pesticide ban will go into effect April 22, 2009 on Earth Day. We want to know: what are you doing to prepare for these changes?
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Pesticides and your garden centre
The Ontario government recently announced that the province's proposed pesticide ban will go into effect April 22, 2009, on Earth Day. We want to know: what are you doing to prepare for these changes?
BLOG

Preparing for a pesticide ban
In 2008, both the Alberta and Ontario governments announced separate proposed plans to limit the use and sale of cosmetic pesticides. We want to know: what are you doing to prepare for these changes? 
At a recent meeting I attended, thrips was described as the first, second and third priority of the industry (from a pest management perspective). While not wanting to downplay the importance of other pests such as whitefly, aphids and mites, or diseases such powdery mildew and root rots, it is probably a fair assessment at the moment of grower concerns over their ability to control this pest.
Dec. 15, 2008, Vineland Station, Ont. — The Ontario Ministry of Agriculture, Food and Rural Affairs, in conjunction with Flowers Canada (Ontario), is hosting a one-day workshop on “How to develop and implement an IPM program for your greenhouse operation.”
NEWS HIGHLIGHT

The 'nuts and bolts' of IPM

The Ontario Ministry of Agriculture, Food and Rural Affairs, in conjunction with Flowers Canada (Ontario), is hosting a one-day workshop on “How to develop and implement an IPM program for your greenhouse operation.”
NEWS HIGHLIGHT

The 'nuts and bolts' of IPM
The Ontario Ministry of Agriculture, Food and Rural Affairs, in conjunction with Flowers Canada (Ontario), is hosting a one-day workshop on “How to develop and implement an IPM program for your greenhouse operation.”

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