Pests and Diseases

Recommendations for managing weeds, insects and diseases in fruit crops such as apples, pears, berries, cherries, peaches, grapes, pears and plums. Tips on using fungicides, antibiotics, insecticides and miticides.

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Spotted Lantern Fly-USDA photo credit
Spotted Lanternfly Permit Training Announced for Lancaster - News News
A permit will be required to sell and move merchandise within and outside of the thirteen (13) county Quarantine area. More
Spotted Lanternfly Grape Pest Alert
Spotted Lanternfly Grape Pest Alert - Articles Articles

Spotted Lanternfly Grape Pest Alert

Heather L Leach, Michela Centinari, Ph.D.

This fact sheet provides identification, damage, quarantine, and management information for the spotted lanternfly, an invasive sap-feeding planthopper that feeds on the vine trunk, shoots, and leaves of grape plants, among other crops. More
Keep your permit in your vehicle. Photo: Emelie Swackhamer, Penn State
How to Get a Spotted Lanternfly Permit From the PA Department of Agriculture - News News
The Pennsylvania Department of Agriculture (PDA) is requiring Pennsylvania businesses to get spotted lanternfly (SLF) permits. More
The original laboratory of S. W. Frost (entomologist) and R. C. Walton (plant pathologist) in the former Arendtsville Hotel, 1918-1922. Photo: Penn State Archives
Early History of the Arendtsville Fruit Laboratory - Articles Articles
In the letter below, Dr. Frost describes the challenges faced by the first scientists who started the Arendtsville Fruit Lab, which went on to become the Fruit Research and Extension Center. More
Keep leaves on the tart cherry trees: Postharvest fungicide applications are necessary to limit cherry leaf spot infections. Photo: K. Peter, Penn State
Mid-Season Tree Fruit Disease Update - News News
The latest 2018 disease updates growers need to know for apple scab, fire blight, sooty blotch and flyspeck, bacterial spot, and cherry leaf spot. More
Adult spotted lanternflies. Photo Credit: E. Smyers
Spotted Lanternfly Management for Homeowners - Articles Articles

Spotted Lanternfly Management for Homeowners

Heather L Leach, Dave Biddinger, Ph.D., Grzegorz (Greg) Krawczyk, Ph.D.

A guide that reviews the identification, life cycle, current distribution, and techniques for managing spotted lanternfly on your property. More
Female spotted lanternfly and her egg mass. Photo: Emelie Swackhamer, Penn State
Tree Fruit Insect Pest - Spotted Lanternfly - Articles Articles

Tree Fruit Insect Pest - Spotted Lanternfly

Grzegorz (Greg) Krawczyk, Ph.D.

The spotted lanternfly, Lycorma delicatula, an invasive plant hopper was first detected in Pennsylvania in the fall of 2014. More
Codling moth monitoring trap. Photo: Greg Krawczyk, Penn State
Insect Bytes: Pest Management Update for Mid-June, 2018 - News News
First-generation flights of codling moth, tufted apple bud moth, and obliquebanded leafroller continue, second-generation Oriental fruit moth about to start, monitor for leafhoppers, woolly apple aphids, San Jose scales, and European red mites. More
Volunteers from Penn State's Fruit Research and Extension Center help prepare holes for planting grapevines at Manatawny Creek Vineyard in Berks County, the location of the research. Image: Erica Smyers
Lanternfly's Penchant for -- and Potential to Harm -- Grapevines Focus of Study - News News
Penn State researchers are studying how feeding damage caused by the spotted lanternfly affects grapevine health and the quality and quantity of the fruit. More
It is important to monitor your orchard site for conditions. Photo: Kari Peter, Penn State
Disease Update: More Advice for Limiting Fire Blight Spread - News News
Fire blight symptoms are widespread throughout Pennsylvania and Maryland. Growers are encouraged to use Apogee or Kudos to shut down tree growth to limit the spread of the disease in orchards. More
Botrytis bunch rot. Photo by W.J. Moller
Botrytis Bunch Rot: Winemaking Implications and Considerations - Articles Articles
This article will review the implications of molds and fruit rots on wine composition and quality and discuss remedial actions in the winery. More
Are your berries turning brown and drying up? Check to see that the pedicle is not damaged. Photo: Kathy Demchak, Penn State
Causes of Strawberry Blossom Blights and Dried Berries - News News
The warm wet weather the past couple of weeks together with high humidity is creating perfect conditions for a number of strawberry diseases. More
Be on alert for apple scab disease conditions until mid-June. Photo: Kari Peter, Penn State
Tree Fruit Disease Conditions Were on Steroids in May - News News
Conditions were incredibly optimal for many tree fruit diseases during the month of May. Management strategies for pome and stone fruit diseases are discussed. More
Scout for fire blight in your orchard. Photo: Kari Peter, Penn State
Disease Update: Dealing with Fire Blight Infections - News News
Reports of fire blight infections have started to occur. The dos and don’ts of managing fire blight infections are discussed. More
Codling moth injured fruit. Photo: Greg Krawczyk, Penn State
First Generation Codling Moth Update May 25, 2018 - News News
It is a perfect time right now to start the insecticide management of the codling moth (CM) in pome fruit orchards. More
Fruitlets. Photo: Kari Peter, Penn State
Disease Update: Managing Diseases During Wet Weather - News News
Trees need to be protected during wet conditions. The following are strategies for keeping diseases in check on apple and stone fruit during persistent rainy weather. More
Early symptoms of blossom blight. Photo: K. Peter, Penn State
Disease Update: Fire Blight, Scab, Bacterial Spot Conditions Alert - News News
The forecast for May 15–18 indicates conditions will be favorable for apple scab and bacterial spot on peach infections. If infections occurred during bloom, fire blight symptoms could begin to appear this week. More
Bloom is still raging in the orchard. Stay vigilant for disease conditions! Photo: K. Peter, Penn State
Disease Update: Fire Blight and Scab Risk Continues This Week - News News
Bloom is occurring in Pennsylvania apple growing regions—fire blight conditions continue, available mature apple scab spores are very high, and an apple scab infection event is predicted for May 10, 2018. More
Protect your blossoms so they don’t look like this picture in a few weeks! Photo: K. Peter, Penn State
Disease Update: High Alert for Scab and Fire Blight Infection - News News
Severe fire blight and apple scab disease conditions are predicted for May 3–5, 2018! Protection is absolutely necessary! More
Apple bloom is right around the corner. Be on alert! Photo: K. Peter, Penn State
Disease Update: Apple Scab, Fire Blight, and Brown Rot This Week - News News
May 3–5 could be potential infection periods for apple scab and fire blight. Brown rot infection conditions favorable for open peach blossoms this week. More
Torino labeled to control apple powdery mildew. Photo: K. Peter, Penn State
New Fungicide to Control Apple Powdery Mildew: Torino - News News
Torino (FRAC Group U6) has a supplemental label to control powdery mildew on apples and cherries. More
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NEWA Off-Hours Incident Reporting - News News
The recent launch of our Network for Environment and Weather Applications (NEWA) Help Desk isn’t simply a way to send us an email or casual message. More
Don’t get caught with your plants down: watch out for fire blight conditions during bloom. Photo: K. Peter, Penn State
Preparing for the Fire Blight Season - News News
Management strategies are discussed for fire blight, as well as for other important tree fruit diseases occurring during the month of May. More
Pear psylla adults feeding on pear shoot. Photo G. Krawczyk, Penn State
Entomology Update: End of April, 2018 - News News
As the 2018 growing season slowly progresses, the pest and beneficial insects are also getting ready for the season. More
Severe powdery mildew infections can abort blossoms. Photo: K. Peter, Penn State
Disease Update: Control for Powdery Mildew and Apple Scab This Week - News News
Tight cluster is the time powdery mildew spores become active. April 24 – 25, 2018 is a predicted scab infection period; be sure trees are covered with protection. More
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