PSU TreeFruit Doctor (@drtreefruit) 's Twitter Profile
PSU TreeFruit Doctor

@drtreefruit

PSU Tree Fruit Pathology Program: disease updates/factoids/awesome pathogen pictures/misc stuff/Dr. Tree Fruit and Don Podcast: buzzsprout.com/1232066

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linkhttp://extension.psu.edu/plants/tree-fruit calendar_today15-01-2015 23:35:08

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PSU TreeFruit Doctor (@drtreefruit) 's Twitter Profile Photo

Manifesting peach leaf curl (PLC): If you don’t spray it….the disease will come… PLC is controlled during fall or early spring (b4 bud swell) when there are NO leaves on the peach trees. The fungus lives in the buds: no leaves = spores vulnerable…w/leaves = spores protected

Manifesting peach leaf curl (PLC): If you don’t spray it….the disease will come… PLC is controlled during fall or early spring (b4 bud swell) when there are NO leaves on the peach trees. The fungus lives in the buds: no leaves = spores vulnerable…w/leaves = spores protected
PSU TreeFruit Doctor (@drtreefruit) 's Twitter Profile Photo

Just a reminder: we are posting weekly episodes right now for the Dr. Tree Fruit and Don Podcast! extension.psu.edu/drtreefruit

PSU TreeFruit Doctor (@drtreefruit) 's Twitter Profile Photo

Christmas trees in May? Chia pet ornaments? Cousin Itt (Addams Family) ornaments? Nope…those are cedar apple rust galls infecting the cedar trees…it’s spore spewing central at the south end of our farm…apple leaves already showing infection…🍎

Christmas trees in May? Chia pet ornaments? Cousin Itt (Addams Family) ornaments? Nope…those are cedar apple rust galls infecting the cedar trees…it’s spore spewing central at the south end of our farm…apple leaves already showing infection…🍎
PSU TreeFruit Doctor (@drtreefruit) 's Twitter Profile Photo

Many thanks to the PA fruit grower who gave me this present (from an untreated orchard)—First bitter rot apple of the 2024 season! Check out the awesome concentric ring pattern of spores on the lesion surface—just beautiful…perfect 10…🍎

Many thanks to the PA fruit grower who gave me this present (from an untreated orchard)—First bitter rot apple of the 2024 season! Check out the awesome concentric ring pattern of spores on the lesion surface—just beautiful…perfect 10…🍎
Ed Sikora (@alabamaed) 's Twitter Profile Photo

Mummified peach fruit infected with brown rot (Monilinia fructicola) is a primary source of fungal inoculum for the following season. Good sanitation practices include removing and destroying all fruit mummies from trees at end season #Peach #Fungi #PlantDisease

Mummified peach fruit infected with brown rot (Monilinia fructicola) is a primary source of fungal inoculum for the following season. Good sanitation practices include removing and destroying all fruit mummies from trees at end season  #Peach #Fungi #PlantDisease
Penn State Pesticide (@psupested) 's Twitter Profile Photo

The IR-4 Project works to provide growers of specialty commodities, like fruits, vegetables, and nursery crops, with legal access to effective pest control options. This work helps growers and consumers alike. For more information, visit buff.ly/3rSniyS.

The IR-4 Project works to provide growers of specialty commodities, like fruits, vegetables, and nursery crops, with legal access to effective pest control options. This work helps growers and consumers alike. For more information, visit buff.ly/3rSniyS.
USApple (@usapples) 's Twitter Profile Photo

🍎 Top 5 Apples U.S. Growers Will Bring to Your Table This Harvest! 🍏 Explore all the details in our Industry Outlook 2024 report—covering everything from U.S. and global apple production to trends in trade, utilization, varieties, and regions. Get the full scoop on our website!

🍎 Top 5 Apples U.S. Growers Will Bring to Your Table This Harvest! 🍏 Explore all the details in our Industry Outlook 2024 report—covering everything from U.S. and global apple production to trends in trade, utilization, varieties, and regions. Get the full scoop on our website!
Ed Sikora (@alabamaed) 's Twitter Profile Photo

Bitter rot is a fungal fruit rot of apple & pear. The disease is favored by high temperatures & high humidity. Lesions start as small sunken areas on outside of fruit. Spots turn brown, expand and develop a bulls-eye pattern. Flyspeck is also visible on fruit #Apple #Fungi

Bitter rot is a fungal fruit rot of apple & pear. The disease is favored by high temperatures & high humidity. Lesions start as small sunken areas on outside of fruit. Spots turn brown, expand and develop a bulls-eye pattern. Flyspeck is also visible on fruit  #Apple #Fungi
Ed Sikora (@alabamaed) 's Twitter Profile Photo

Black knot on cherry caused by the fungus Apiosporina morbosa. The disease appears as hard black swellings (knots) that are scattered in the tree. Infected branches often wilt, fail to leaf out or die beyond the knots. Black knot can be controlled through prevention & sanitation

Black knot on cherry caused by the fungus Apiosporina morbosa. The disease appears as hard black swellings (knots) that are scattered in the tree. Infected branches often wilt, fail to leaf out or die beyond the knots. Black knot can be controlled through prevention & sanitation
USApple (@usapples) 's Twitter Profile Photo

There’s an entire industry behind every apple! Did you know that the U.S. apple industry is responsible for creating 154,000 jobs? In total, the apple business contributes more than $23 billion to the national economy. Learn more about what’s happening behind the apple scene in

PA Historical & Museum Commission (@phmc) 's Twitter Profile Photo

It's #EatAnAppleDay! Will you celebrate by picking 🍎 or by digging into a slice of 🍏🥧? This State #Archives photo shows workers harvesting apples on an orchard near Biglerville, Pa.

It's #EatAnAppleDay! Will you celebrate by picking 🍎 or by digging into a slice of 🍏🥧? This State #Archives photo shows  workers harvesting apples on an orchard near Biglerville, Pa.
USApple (@usapples) 's Twitter Profile Photo

It’s Johnny Appleseed Day! Have you ever wondered what apples Johnny Appleseed grew? Well, he was known for “spitters.” The nickname spitter comes from the reaction a person would have if they bit into one. You see, Johnny’s apples weren’t for eating. His small, tart apples were

It’s Johnny Appleseed Day! Have you ever wondered what apples Johnny Appleseed grew? Well, he was known for “spitters.” The nickname spitter comes from the reaction a person would have if they bit into one. You see, Johnny’s apples weren’t for eating. His small, tart apples were
PSU TreeFruit Doctor (@drtreefruit) 's Twitter Profile Photo

Disease Update: It’s been quite rainy in PA since last weekend…more rain is in the forecast…give your late season apple varieties some love by reapplying fungicides to keep apples protected from fruit rots! extension.psu.edu/fruit-times-al…

National Apple Harvest Festival (@ntlappleharvest) 's Twitter Profile Photo

🍏📷 We hope to see you on Oct. 5-6 & 12-13 at the 60th Annual National Apple Harvest Festival just outside of Historic Gettysburg, PA! Plan your visit and buy tickets in advance at appleharvest.com. 📷

🍏📷 We hope to see you on Oct. 5-6 & 12-13 at the 60th Annual
<a href="/NtlAppleHarvest/">National Apple Harvest Festival</a>
just outside of Historic Gettysburg, PA! Plan your visit and buy tickets in advance at appleharvest.com. 📷
PSU TreeFruit Doctor (@drtreefruit) 's Twitter Profile Photo

I’m moving my operation to the following platforms—please join me to continue to receive pertinent tree fruit disease information: Bluesky: at drtreefruit.bsky.social Instagram: at dr.treefruit This X account will be deactivated before the end of the year.