Category Archives: Apple diseases: general info

Beware: Extended Wetting Creates Unusual Risks

The extended wetting periods and cool cloudy weather we are experiencing in the lower Hudson Valley as trees are approaching petal fall create unusually high risks for quince rust, Botrytis infection, and fruit marking from phytotoxicity. Special cautions are advised. … Continue reading →

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Trunk-Related Problems in Apples: SAD

Apple growers and extension specialists in northeastern North America are seeing an alarming increase in the numbers of orchards, mostly young orchards, where trees are declining or dying due to dysfunctional trunks. The phenomenon has been named sudden apple decline (SAD) … Continue reading →

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Trunk Disease Problems on ‘Crimson Topaz’

Crimson Topaz is a scab-resistant cultivar from Europe that has been gaining in popularity because of its attractive appearance and good eating quality. However, we are learning that this cultivar is rather susceptible to several diseases that cause cankers on … Continue reading →

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A Flood of Fungal Problems?

Friday, 4 July 2014: Storms over the past three days have provided >4 inches of rain throughout much of the Hudson Valley, and those rains may trigger major disease-control problems in orchards where early-season disease control was less than 100% … Continue reading →

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Apple Summer Diseases, Herbicide Problems, and Irrigation

Monday, 30 June 2014: In case you missed them, I recently published two articles in Scaffolds Fruit Journal that I will not duplicate here. The article last week (23 June) was titled “Controlling Summer Diseases on Apples” and focused on spray … Continue reading →

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Apple Diseases Appearing Now

Thursday, 29 May 2014: Despite my dire predictions in earlier blog posts, apple scab has been very slow to appear in the Hudson Valley this year. Severity of anticipated infection periods in mid-April was diminished when temperatures ended up being … Continue reading →

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Category Archives: Apple diseases: general info

Beware: Extended Wetting Creates Unusual Risks

Trunk-Related Problems in Apples: SAD

Trunk Disease Problems on ‘Crimson Topaz’

A Flood of Fungal Problems?

Apple Summer Diseases, Herbicide Problems, and Irrigation

Apple Diseases Appearing Now

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Category Archives: Apple diseases: general info

Cornell University in the Hudson Valley:

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