Spotted Wing Drosophila (SWD): A problem for Ontario grapes?

SWD has been a challenge for berry growers in Ontario for several years.  In 2017, when the population increased earlier than normal, it caused losses in cherry crops.  We don’t know a lot about its impact on grapes in Ontario, but we do know that it is present in our vineyards.  Research in other grape growing regions suggests that SWD is implicated with injury to fruit, the attraction of other sour rot-bearing Drosophila species and contamination of fruit and wine.

The following are excerpts from an article written in 2016 by Jody Timer, Penn State Dept. of Entomology.  A summary of options for controlling SWD in grapes is provided at the end of the article.

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SWD Update August 31

This post contains a summary of trap counts for the week of August 27.  Please refer to previous blog posts for counts from earlier in the growing season. The regional monitoring program was conducted in berry and stone fruit crops and grapes in Essex, Chatham-Kent, Elgin, Norfolk, Niagara, Wellington, Durham, Ottawa/Carleton, Stormont/Dundas/Glengarry, and Northumberland counties.

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SWD Update August 24

This post contains a summary of trap counts for the week of August 20. Continue reading

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Berry Bulletin August 23, 2018

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August 23, 2018

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Posted in Berries, Blueberries, Currants, Elderberries, Cranberries and more, Diseases, Insects, Pest Management, Raspberries, Strawberries, Uncategorized, Weeds | Tagged , , , , , , , , , , , , , , , , | Leave a comment

Brown marmorated stink bug (BMSB) update, 2018

Brown marmorated stink bug (BMSB), Halyomorpha halys Stål, is an invasive pest native to East Asia. First identified in Pennsylvania in 2001, it has now been detected in 44 states and 3 provinces (Ontario, Quebec and British Columbia), and is of economic importance wherever it is found. There are more than 170 North American plant hosts, including broad spectrum of important fruit (e.g., apples, tender fruits and grapes), vegetable and field crops, as well as landscape trees and shrubs. Many of these crops are important agricultural commodities in Ontario. BMSB survey programs were initiated in Ontario in 2013 and as of July, 2018 BMSB has been detected in 24 counties.   Continue reading

Posted in Apples, Apricots, Cherries, Grapes, Nectarines, Peaches, Pears, Plums, Tender Fruit, Uncategorized | Tagged , | Leave a comment

SWD Update August 17

This post contains a summary of trap counts for the week of August 13. The traps are shifting from berry crops to later stone fruit and early grape varieties. Continue reading

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Label expansion for Delegate in Stone Fruit

Delegate insecticide is now labeled for suppression of peach tree borer and lesser peach tree borer in all stone fruit.  Continue reading

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