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Dr. Tree Fruit and Don

Penn State Extension
Apple Scab
Fire Blight
Pest Management
Codling Moth
Pennsylvania
Bitter Rot
Tree Fruit Production
Weather Conditions
Apples
Diseases Of Tree Fruit
Thinning Techniques
Chemical Thinners
Oriental Fruit Moth
Fungicides
Frost
Pomology
Apple Production
Pear Production
Precision Crop Load Management
Pruning Techniques

This podcast focuses on providing timely commercial tree fruit production advice for beginning industry professionals and seasoned growers. Educators from Penn State Extension and faculty from Penn State University’s horticulture, entomology, and plant pathology departments drop in to give insights and observations about what is going on in the orchards.

PublishesWeeklyEpisodes97Founded6 years ago
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Education

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Artwork for Dr. Tree Fruit and Don

Latest Episodes

We sit down with our Penn State tree fruit team to lay out the decision points hitting orchards right now: codling moth, bitter pit, and tree management.

Host: Don Seifrit

Speakers: Kari Peter, Shan Kumar, Greg Krawczyk

Photo Credit: Kari Peter, PS... more

YouTube

Kari and Shan highlight the important things to consider over the next few days as the crop load for this year stabilizes. We discuss potential thinning decisions as well as disease management. 

Host: Don Seifrit

Speakers: Kari Peter, Shan Kumar

Ph... more

YouTube

From spray coverage and rain timing to making block by block calls, Kari, Greg, and Shan focus what to do this year to protect what's left and what to do to prepare for next year.

Host: Don Seifrit

Speakers: Kari Peter, Shan Kumar, Greg Krawczyk

Ph... more

YouTube

A late April freeze might seem like a single bad night, but what we’re seeing across Pennsylvania orchards is a season-long management puzzle. Kari, Shan, and Greg outline what's important in a challenging year.

Host: Don Seifrit

Speakers: Kari Pete... more

YouTube

Don, Kari, Greg, and Shan walk through the overnight freeze and the chain reaction it triggers across fruit set, disease risk, and insect timing in our  orchards. We share what to scout first, what to spray only when it makes sense, and how to protec... more

YouTube

Don is joined by Kari, Shan, and Greg during this scorching hot April week to discuss fire blight infection periods, bloom thinning, and insect flights.

Host: Don Seifrit

Speakers: Kari Peter, Shan Kumar, Greg Krawczyk

Photo Credit: Kari Peter, PSU... more

YouTube

Don is joined by Kari and Shan this week to discuss what happens what a spring freeze doesn’t just “nip” buds. Shan highlights what to do after the frost: how to sample across a block, cut buds to spot real freeze damage in the reproductive tissue.

more

YouTube

This bonus episode is to highlight another fruit podcast focused on horticulture/phenology/physiology topics from Extension professionals and researchers around the country. It's hosted by Don and includes personnel from Cornell, Michigan State, Univ... more

YouTube

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Recent Guests

Shan Kumar
Dr. Shan Kumar, specialist contributing to the episode
Penn State Extension / Penn State University
Episode: Season 7, Episode 7 - Tree Health Management
Greg Krawczyk
Dr. Greg Krawczyk, specialist contributing to the episode
Penn State Extension / Penn State University
Episode: Season 7, Episode 7 - Tree Health Management
Kari Peter
Dr. Kari Peter, Penn State Extension horticulturist
Episode: Season 7, Episode 6 - Spring Chaos
Dr. Greg Krawcheck
Professor contributing to technical orchard management discussions
Penn State University
Episode: Season 7, Episode 3: Green Tip Game Plan
Dr. Sean Kumar
Professor providing disease and pest management updates
Penn State University
Episode: Season 7, Episode 3: Green Tip Game Plan
Sean Kumar
Guest on the episode, introduced as a Dr. and contributor
Penn State (implied)
Episode: Season 7, Episode 2 - End of Winter Wins
Sarah Zost
A fourth-generation apple grower and representative for SHAP
State Horticultural Association of Pennsylvania (SHAP)
Episode: Season 6, Episode 4 - State Horticultural Association Job Posting
Lee Kalcsits
Associate Professor and Endowed Chair for Tree Fruit Physiology and Management at Washington State University
Washington State University
Episode: Season 6, Episode 1 - Introducing SPARC and Early Season Maintenance

Host

Don Seifert
Host of the Dr. Tree Fruit and Don podcast

Top Education Podcasts

Talking Points

Recent interactions between the hosts and their guests.

Season 7, Episode 1 - Introducing Dr. Sara Serra
Q: What are your main research priorities for the next couple of years?
My top priorities include developing new pruning techniques, optimizing harvest windows, and evaluating rustic for fruit trees.
Season 7, Episode 1 - Introducing Dr. Sara Serra
Q: How did you become interested in botany or plant sciences?
I always loved science and biology, and when it was time to choose my field, I had no doubts it would be plants.
Season 6, Episode 8 - Windy Days, Disease Pressure and Post-Bloom Sprays
Q: What are some pieces of advice if I really need to get something on, but I don't have a great timing window to do it because it's been 20 mile an hour winds?
Utilize technology to time your sprayings when the wind is at its lowest, and consider adding drift retardants to your tank mix.
Season 6, Episode 7 - Blooms, Blights, and Bugs
Q: What pesticide protections are recommended right now against fire blight?
Streptomycin plus Regulaid is recommended to protect against fire blight, ideally along with Actigard as a plant defense elicitor to enhance the protection.
Season 6, Episode 7 - Blooms, Blights, and Bugs
Q: Are there some cultivars that are more tolerant or durable to those environmental fluctuations during that flower bud initiation time?
A good question without a definite answer yet, as even for the most common varieties we lack comprehensive data on all cultivars' responses to environmental stress during bud initiation.

Audience Metrics

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Frequently Asked Questions About Dr. Tree Fruit and Don

What is Dr. Tree Fruit and Don about and what kind of topics does it cover?

This show provides practical, field-facing guidance for commercial tree fruit production, with frequent Penn State Extension and university experts weighing in on current orchard conditions, pest and disease pressures, pruning and crop load management, spraying timing, and harvest considerations. Episodes routinely feature updates from respected pomology and horticulture specialists, plus host-led discussions on weather impacts, regulatory issues, and upcoming trainings or field days. A notable strength is the hands-on, timing-driven approach, including concrete spray schedules, monitoring practices, and decision-making tips tied to specific pests (codling moth, apple moths, brown rot, bitter rot) and diseases (apple scab, fire blight). The... more

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Which podcasts are similar to Dr. Tree Fruit and Don?

These podcasts share a similar audience with Dr. Tree Fruit and Don:

1. Scaffolds
2. MIFruitcast
3. The joe gardener Show - Organic Gardening - Vegetable Gardening - Expert Garden Advice From Joe Lamp'l
4. The Beet: A Podcast For Plant Lovers
5. Radiolab

How many episodes of Dr. Tree Fruit and Don are there?

Dr. Tree Fruit and Don launched 6 years ago and published 97 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

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What guests have appeared on Dr. Tree Fruit and Don?

Recent guests on Dr. Tree Fruit and Don include:

1. Shan Kumar
2. Greg Krawczyk
3. Kari Peter
4. Dr. Greg Krawcheck
5. Dr. Sean Kumar
6. Sean Kumar
7. Sarah Zost
8. Lee Kalcsits

To view more recent guests and their details, simply upgrade your Rephonic account. You'll also get access to a typical guest profile to help you decide if the show is worth pitching.

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