Grapevine viruses, September 2017

W. McFadden-Smith (OMAFRA), S. Poojari  and J.P. Parent (AAFC)

Symptoms of Grapevine leafroll disease (GLD), caused by a number of GLRaVs, are more apparent on red-fruited vinifera cultivars than whites and they vary based on variety of factors including environmental conditions, cultivar, age of the vines, stage and severity of (one or more than one virus) infection and viral load. Continue reading

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Sooty mould — a sure sign of mealybugs (and sometimes scales)

W. McFadden-Smith (OMAFRA), S. Poojari and J.P. Parent (AAFC)

A few weeks ago, it was easy to find mealybugs and scales on foliage and fruit in vineyards that had not been sprayed with Movento.  Mealybugs and scales secrete a sugary substance that not only attracts ants, but also acts as a food source for superficial sooty mould fungi.  The latter are not an issue for wine grapes but can make table grapes unmarketable.  However, the presence of sooty mould is a good indicator of the presence of the vectors of Grapevine Leafroll-associated Viruses (GLR-aVs).

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Berry Bulletin September 8, 2017

In this update:

-spotted wing Drosophila management

-cyclamen mite

-strawberry fungicides

-raspberry and blueberry update

-OBGA twilight meeting

Continue reading

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Late Season Risk of Brown Marmorated Stink Bug in Pome Fruit

Hannah Fraser, Entomologist-Horticulture, OMAFRA

Are you actively monitoring for brown marmorated stink bug (BMSB) or other injurious stink bugs in your orchard?  As we head towards harvest, the risk from BMSB injury to apples and pears increases in areas where the pest is established.  Our survey work* indicates BMSB is widespread in the Niagara region, but it is most likely present in much of southern Ontario from Windsor to Ottawa.  Populations and pest pressure may vary by region and by year.   Continue reading

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What Is Your Apple IPM Report Card?

Do you know how effective your pest management program was this year? With only a small time commitment required, a harvest assessment can provide information on what part of your management program went well (or not so well) this year. Continue reading

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Berry Bulletin August 25

This week:

-SWD and blackberries & raspberries

-Strawberry management

-weed management

-OBGA twilight meeting

Continue reading

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Apple Update: August 10, 2017

Available in PDF: 12_Apple Update Auguest 10

In this update:

  • Growth stage
  • Precipitation
  • Retain label changes
  • International Fruit Tree Association – Part 2
  • Diseases: fire blight, scab, fruit rot, blister spot
  • Insects: apple maggot, codling moth, San Jose scale, woolly apple aphid, leafcurling midge, brown marmorated stink bug, mites

Continue reading

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