Tag Archives: powdery mildew

Fungal disease management in grapevines for the remainder of the 2017 season

The frequent rains, heavy dews, fog, overcast skies and moderate temperatures have promoted infections by downy and powdery mildew.  Strictly protectant fungicides cannot stand up to the heavy rains that have occurred this year.  Dense canopies prevent air movement to … Continue reading

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Apple Update: July 14, 2017

Available in PDF: 10_Apple Update July 15 2017 In this update: Growth stages Bitter pit management Disease: fire blight, scab, powdery mildew, Phytophthora, Nectria, summer disease Insect: lepidopterans (moths), apple maggot, leafcurling midge, San Jose scale, aphids, potato leafhopper, rust mite … Continue reading

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Apple Update: June 30, 2017

In this update: Fruit size Hedging Nutrient analysis Weather issues Disease: fire blight, apple scab, powdery mildew, fly speck/sooty blotch, sudden apple decline Insect: oriental fruit moth, obliquebanded leafroller, rosy apple aphid, San Jose scale, Japanese beetle, brown marmorated stink … Continue reading

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Apple Update: June 14, 2017

In this update: crop stage thinning irrigation diseases: fire blight, scab, powdery mildew, leaf spots insects: codling moth, obliquebanded leafroller, dogwood borer, San Jose scale, leafcurling midge, plum curculio, brown marmorated stink bug Ontario Apple Orchard Tour

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Apple Update: May 30, 2017

Crop Stages In Southwestern Ontario apples are at 3 to 12 mm fruitlet size In Grey County and east of Toronto, apple blossoms are at full bloom to petal fall Production Fruitlet thinning applications have begun in Southwestern Ontario and … Continue reading

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Apple Update: May 24, 2017

In this update: Crop Stages Production Fire Blight Apple Scab and Powdery Mildew Summer Diseases Insects Crop Stages In Southwestern Ontario, apples are at king bloom petal fall to 10 mm fruitlet size. In Grey County and east of Toronto, … Continue reading

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Apple Update: May 16, 2017

Crop Stages In all locations bloom stages are pretty spread out, depending on variety and proximity to water. In Essex, Kent Middlesex, Lambton, apple blossoms are at bloom to petal fall. In Elgin, Middlesex, Norfolk, Brant and Niagara, apple blossoms … Continue reading

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