Latest Apple News and Resources

Apple Blotch Disease in Wisconsin Apple Orchards
glare Created with Sketch.
card_styles Created with Sketch.
Oct 6th
20221006

Apple Blotch Disease in Wisconsin Apple Orchards

By Leslie Holland

During this year’s harvest season, I’ve received several phone calls and e-mails about trees showing premature defoliation and foliar disease symptoms. Upon further discussion with […]

Have You Seen Lipstick Rust in Your Apple Tree or Orchard?
glare Created with Sketch.
card_styles Created with Sketch.
Sep 15th
20220915

Have You Seen Lipstick Rust in Your Apple Tree or Orchard?

By Leslie Holland

Lipstick Rust is a newly reported fungal disease of apple in Wisconsin. It was first found in Wisconsin in 2021 and has been identified in […]

Newly Registered and Organic Fungicides for Apple
glare Created with Sketch.
card_styles Created with Sketch.
Jul 14th
20220714

Newly Registered and Organic Fungicides for Apple

By Leslie Holland

*Mention of a product is not an endorsement. This article is not a substitute for the product label, follow the directions on the fungicide label. […]

Managing Apple Powdery Mildew
glare Created with Sketch.
card_styles Created with Sketch.
Jul 14th
20220714

Managing Apple Powdery Mildew

By Leslie Holland

It’s July in Wisconsin, which means the humidity is up and if you have a history of powdery mildew in your orchard you may be […]

Apple Tree Nutrition: Bitter Pit Control
glare Created with Sketch.
card_styles Created with Sketch.
Jun 30th
20220630

Apple Tree Nutrition: Bitter Pit Control

By Amaya Atucha

Over the last couple of years new research on bitter pit has shed light on this very complex issue. We used to think of bitter […]

Promoting Flower Bud Formation in Honeycrisp—the Time Is Now
glare Created with Sketch.
card_styles Created with Sketch.
May 18th
20220518

Promoting Flower Bud Formation in Honeycrisp—the Time Is Now

By Amaya Atucha

Honeycrisp starts flower formation really early in the season and by the time fruits are 30 to 36 mm in diameter, which corresponds to about […]

Growing Organic Apples in a High Tunnel
glare Created with Sketch.
card_styles Created with Sketch.
Apr 7th
20220407

Growing Organic Apples in a High Tunnel

By Chris McGuire

We raise organic apples and berries on our farm in Lafayette County, southwest Wisconsin.  In the past ten years we have transitioned our farm from […]

Bloom Thinning Recommendation for Apple Orchards
glare Created with Sketch.
card_styles Created with Sketch.
Apr 7th
20220407

Bloom Thinning Recommendation for Apple Orchards

By Amaya Atucha

This article is a summary of the Bloom Thinning Webinar which can find here The 2022 growing season is right around the corner, and in […]

Winter Sanitation for Disease Prevention in the Apple Orchard
glare Created with Sketch.
card_styles Created with Sketch.
Jan 31st
20220131

Winter Sanitation for Disease Prevention in the Apple Orchard

By Emma Nelson and Leslie Holland

It’s that time of year again! While your trees are dormant this winter, it’s a great time to continue disease prevention practices in your apple […]

UW-Madison/Extension Plant Disease Diagnostic Clinic (PDDC) Update November 26, 2021
glare Created with Sketch.
card_styles Created with Sketch.
Dec 1st
20211201

UW-Madison/Extension Plant Disease Diagnostic Clinic (PDDC) Update November 26, 2021

By Brian Hudelson, Sue Lueloff and Ann Joy

In 2021, the PDDC continues with limited hours and limited sample processing capacity due to COVID-19.  Click here for the PDDC’s current submission policy.  The […]