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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Be sure to remove fruit mummies from peach trees while pruning to limit brown rot for the coming season. Photo: K. Peter, Penn State
The 2019 Season: Dormant Copper Sprays and Sanitation for Disease Management - News News
Consider using dormant applications of copper to manage fungal and bacterial diseases. Sanitation is critical for limiting fruit rots in the orchard. More
Powdery mildew on blossoms. The powdery mildew fungus likes young tissue. As tissue begins to grow, the fungus will colonize young, green tissue as it emerges. Photo: Kari Peter, Penn State
Spraying by the Numbers: Fungicide Resistance Management - Articles Articles

Spraying by the Numbers: Fungicide Resistance Management

Kari A. Peter, Ph.D., Alan R. Biggs

Growers can prevent resistance to fungicides by alternating chemicals by FRAC group also known as "spraying by the numbers." More
Are you at risk?
Online Risk Management Focus Group - Webinars Webinars
Are your farm or family assets at risk? These focus groups will provide information about various types of risk and ways to protect your assets. More
Image Credit: Emelie Swackhamer, Penn State Extension
Spotted Lanternfly Agricultural Producer and Forest Landowner Impact Survey - News News
A survey is currently underway to gather information from horticultural growers, field crop farmers, and forest landowners on the potential economic impact of the spotted lanternfly (SLF) on agriculture and forestry. More
Brown marmorated stink bug adult and nymphs. Photo: Greg Krawczyk, Penn State
Brown Marmorated Stink Bug Management Survey for Commercial Producers - News News
A nationwide survey is currently underway to gather information from farmers and growers on the economic impact of the brown marmorated stink bug (BMSB) on agriculture. More
Adult spotted lanternflies. Photo Credit: E. Smyers
Control de la Mosca Linterna con Manchas para el Público en General - Articles Articles

Control de la Mosca Linterna con Manchas para el Público en General

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

Las MLM son una plaga invasora destructiva que amenaza la agricultura, la industria maderera y ornamental y las plantas de jardín. More
Spotted lanternfly feeding on grapevine. Image by Erica Smyers.
Updated Insecticide Recommendations for Spotted Lanternfly on Grape - Articles Articles
Insecticide recommendations for spotted lanternfly in grape, updated January 2019. More
Updated Insecticide Recommendations for Spotted Lanternfly on Tree Fruit
Updated Insecticide Recommendations for Spotted Lanternfly on Tree Fruit - Articles Articles
Insecticide recommendations for spotted lanternfly in tree fruit, updated January 2019. More
Sanitation will be critical for managing disease for the 2019 season. Photo: K. Peter, Penn State
Disease Update: Cleaning Up the Messy 2018 Season - News News
There were many diseases affecting tree fruit growers in 2018. Sanitation will be very important while preparing for the 2019 season. More
How To Remove Spotted Lanternfly Eggs
How To Remove Spotted Lanternfly Eggs - Videos Videos

How To Remove Spotted Lanternfly Eggs

Donald Seifrit

1:14

Learn first-hand how to scrape and destroy spotted lanternfly egg masses, which are visible between October and July. More
Leaf infected with Marssonina. Photo: K. Peter, Penn State
Apple Disease - Marssonina Blotch - Articles Articles

Apple Disease - Marssonina Blotch

Kari A. Peter, Ph.D.

Marssonina blotch, caused by Marssonina caronaria, is a foliar disease first identified in Pennsylvania in September 2017. More
Spotted Lanternfly: Research Update
Spotted Lanternfly: Research Update - Videos Videos

Spotted Lanternfly: Research Update

Julie Urban

22:39

A lot of scientific research is being done to increase our understanding about how the spotted lanternfly behaves and what management methods might be effective. More
Photo: Holly Raguza, Pennsylvania Department of Agriculture
Spotted Lanternfly: Tips for Handling Yard Waste in Quarantined Areas - Articles Articles
To prevent the movement of this insect, avoid moving yard waste such as woody plant debris (fallen trees or branches and tree trimmings) outside the quarantine area. 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
Photo: Holly Raguza, Pennsylvania Department of Agriculture
How You Can Comply with the Spotted Lanternfly Quarantine Regulations - Articles Articles
Some tips to help you avoid spreading Spotted Lanternfly (SLF) and be in compliance with the Pennsylvania Department of Agriculture (PDA) regulations. More
Does Your Business Need a Spotted Lanternfly Permit?
Does Your Business Need a Spotted Lanternfly Permit? - Articles Articles
Find out if your business or organization is required to have a Spotted Lanternfly permit in Pennsylvania. More
Dead spotted lanternfly at the base of a treated tree. Photo by Pennsylvania Department of Agriculture
Treating Black Walnuts with Insecticides for Spotted Lanternfly Control - Articles Articles
Recommendations for safe pesticide applications to control spotted lanternfly infestations. More
An adult spotted lanternfly. Photo by Pennsylvania Department of Agriculture
Avoid Home Remedies to Control Spotted Lanternfly - Articles Articles
Untested homemade solutions may harm people, pets and plants. Their use can be unsafe and illegal. More
Spotted Lanternfly Banding
Spotted Lanternfly Banding - Videos Videos

Spotted Lanternfly Banding

Elizabeth Finlay, Donald Seifrit

4:33

Banding trees with sticky tape can capture and kill spotted lanternfly nymphs and adults. This non-toxic, inexpensive technique can be used on any tree. More
La roña de la manzana necesita material orgánico para invernar
MIP – Exploración y Manejo de la Roña de la Manzana - Articles Articles

MIP – Exploración y Manejo de la Roña de la Manzana

Kari A. Peter, Ph.D., Montserrat Fonseca Estrada, Tianna Dupont

Asegúrese de saber dónde pasa el invierno la roña de manzana, cómo supervisarla y cuándo es más probable que aparezca. More
Photo 1. Codling moth larvae feeding inside the fruit. Photo: G. Krawczyk, Penn State
Tree Fruit Entomology Update for the End of August 2018 - News News
Pennsylvania has experienced a combined average per location of about 20 inches of rain during the last 5 weeks. More
Bitter rot on apple and pear fruit is caused by the pathogenic fungi Colletrotrichum gloeosporioides and C. acutatum. Photo: Kari Peter, Penn State
Wanted: Bitter Rot of Apple Samples From Pennsylvania Growers - News News
The Tree Fruit Pathology Lab at the Fruit Research and Extension Center is seeking apples infected with the fungus causing bitter rot from around the state of Pennsylvania in commercial orchards. More
Spotted Lanternfly: What to Look For
Spotted Lanternfly: What to Look For - Articles Articles
Spotted Lanternfly, Lycorma delicatula, is a new threat to Pennsylvania and the United States, and experts are still learning how to combat it. More
Hail damaged fruit need protection from fruit rots. Photo: T. Ford, Penn State
Managing Fruit Rots This Season - News News

Managing Fruit Rots This Season

07/26/2018

Fungicide re-applications are necessary since several inches of rain have fallen the last few days. Management considerations are discussed for mitigating pome and stone fruit rots. More
Photo 1. Apple fruit injured by first-generation codling moth larvae. Photo: G. Krawczyk, Penn State
Insect Bytes: 2018 Mid-Season Pest Management Update - News News
It is again time to look very carefully at pheromone traps placed in orchards. More
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