Penn State Extension

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Penn State Spray Record-Keeping Spreadsheet
Penn State Spray Record-Keeping Spreadsheet - News News
The downloadable Spray Record-Keeping Spreadsheet for tree fruit was updated for 2018, and it simplifies record-keeping for your packer and processor. More
The Scholl Family
Twilight At-Market Workshop at Scholl Orchard - Workshops Workshops
The Scholl family will give a tour of their facility, give a history of their business and explain what makes their business successful. More
Tree Fruit Insect and Mite Control Toolbox - Pesticide Resistance Management
Tree Fruit Insect and Mite Control Toolbox - Pesticide Resistance Management - Articles Articles
A number of insect and mite pests have developed varying levels of resistance to some insecticidal chemistries over the years, including the organophosphates, carbamates, and pyrethroids. More
Tree Fruit Disease Toolbox - Fungicide Resistance Management
Tree Fruit Disease Toolbox - Fungicide Resistance Management - Articles Articles
Resistance has sometimes resulted in pest-management-program failures. Below are presented tactics to help delay resistance to fungicides. 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
Tiny, black, spherical structures are produced on stalks above the white mold. Each of these contains thousands of spores that are released to float in the air. Photo by K. Peter.
Stone Fruit Disease - Rhizopus Rot - Articles Articles

Stone Fruit Disease - Rhizopus Rot

Kari A. Peter, Ph.D.

Rhizopus rot, caused by Rhizopus nigricans, can be very destructive to harvested fruit. 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
Orchard IPM - Field Guide to Tree Fruit Disorders, Pests, and Beneficials
Orchard IPM - Field Guide to Tree Fruit Disorders, Pests, and Beneficials - News News
This Penn State Extension publication, in Spanish and English, is designed for use by orchard employees - often the first individuals to detect a new occurrence of a fruit disease or insect pest. More
Andrena on apple blossom. Photo: David Biddinger
Orchard Pollination: Wild Bees - Articles Articles

Orchard Pollination: Wild Bees

Dave Biddinger, Ph.D.

Managed pollinators like honey bees and mason bees are important pollinators for orchards, but research suggests that wild bees also contribute significantly to fruit tree pollination. More
Osmia cornifrons on an apple blossom. Photo: David Biddinger
Orchard Pollination: Solitary (Mason) Bees - Articles Articles
Growers of bee-pollinated crops, particularly apples, may be interested in the possible use of solitary bees as pollinators. More
Nitrogen deficiency symptoms on peach, which can be prevented by leaf analysis and block-specific fertilization.
Orchard Nutrition: An Overview - Articles Articles

Orchard Nutrition: An Overview

Robert Crassweller, Ph.D.

Nutritional requirements of fruit trees differ from those of agronomic crops, cover crops, and orchard sod. More
Collect mid-shoot leaves on current season’s growth.
Orchard Nutrition - Sample for Foliar Analysis Mid-July to August - Articles Articles
Plant tissue analysis is used to directly measure the amount of nutrients in fruit trees, and for established perennial crops, is usually a better indicator of nutrient status than a soil test. More
Spring Orchard Meetings
Spring Orchard Meetings - Workshops Workshops
Penn State Extension has planned ten educational meetings for commercial tree fruit growers this spring. More
Tyvek® tree guard. Photo: Rob Crassweller
Orchard Weed Control - Protection of Tree Trunks - Articles Articles
Some of the burn-down herbicides have been implicated as possible causes of damage to young tree trunks that have green tissue on portions of the lower trunk. More
Soil testing throughout the project helps determine if any soil amendments are needed. Photo: Kristi Kraft
Start Farming: Establishing Farmers Prepare Fields for Fruit Trees - Articles Articles
"Models for the Future" demonstration plots showcase best management practices for producers in the establishing years of developing their farm enterprises. More
Orchard Weed Control - Part of an IPM Plan
Orchard Weed Control - Part of an IPM Plan - Articles Articles

Orchard Weed Control - Part of an IPM Plan

Robert Crassweller, Ph.D.

Applying herbicides in the fall is key to successful weed management. The application can also be part of an integrated management approach for other orchard pests like cat facing insects and rodents. More
Source: Pennsylvania Department of Conservation and Natural Resources - Forestry, Bugwood.org
Tree Fruit Insect Pest - Pear Thrips - Articles Articles

Tree Fruit Insect Pest - Pear Thrips

Grzegorz (Greg) Krawczyk, Ph.D.

Pear thrips, Taeniothrips inconsequens, was introduced early this century, probably from Europe. More
Tree Fruit Insect Pests - Yellow Jackets and Hornets
Tree Fruit Insect Pests - Yellow Jackets and Hornets - Articles Articles
While greater opportunities for biological control of some apple pests exist in today's orchards, we are seeing a greater diversity of generalist predators. More
Pine vole injury is found on the below-ground portions of a tree.
Orchard Wildlife Management: Preventing Vole Damage - Articles Articles

Orchard Wildlife Management: Preventing Vole Damage

Robert Crassweller, Ph.D., Tara Baugher

One of the last tasks in getting orchards ready for winter is planning your strategy to control voles and prevent their damage. More
Source: James Solomon, USDA Forest Service, Bugwood.org
Tree Fruit Insect Pest - American Plum Borer - Articles Articles

Tree Fruit Insect Pest - American Plum Borer

Grzegorz (Greg) Krawczyk, Ph.D.

American plum borer, Euzophera semifuneralis, has become a major indirect pest of tart cherries. More
Orchard Biological Control - Protecting Mite and Aphid Predators
Orchard Biological Control - Protecting Mite and Aphid Predators - Articles Articles
The biological control potential of the vast majority of beneficial arthropods is not realized unless only pesticides that are selective and nontoxic to these arthropods are used. More
Reentry and Preharvest Intervals - Antibiotics and Fungicides
Reentry and Preharvest Intervals - Antibiotics and Fungicides - Articles Articles
Listed below are pesticides used on tree fruits. Not all materials listed here are suggested in the spray schedules. More
Large Plastic Delta trap with sticky liner baited with Oriental fruit moth sex pheromone lure
Orchard IPM - Insect Monitoring - Articles Articles

Orchard IPM - Insect Monitoring

Grzegorz (Greg) Krawczyk, Ph.D.

Monitoring insect pests continues to be one of the pillars of integrated pest management in Pennsylvania orchards. More
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