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2017

June Diseases for the Grower Radar
May 26, 2017
Diseases for the fruit grower radar and their management strategies are discussed as we wrap up May and begin June.
Disease of the Month: Peach Leaf Curl
May 26, 2017
Peach leaf curl has caught many folks off guard this year. Tips for preventing the disease next season are discussed.
Entomology Update for June 2017
May 26, 2017
The 2017 biofix for the first brood tufted apple bud moth (TABM) at the Penn State orchards in Biglerville was established on May 1st while for the obliquebanded leafroller (OBLR) on May 20th.
Apple Thinning and Promoting Return Bloom
May 25, 2017
It will soon be time to start hand thinning and applying return bloom sprays to apple orchards.
Consider a June Planting of Sorghum Sudangrass Following Orchard Removal
May 24, 2017
Have you recently pushed out a block of older fruit trees? In commercial grower plots, we are learning that sudangrass is an excellent first step to replant success.
Penn State Extension Young Grower Alliance to Visit Russel E. Larson Ag Research Center
May 24, 2017
On June 14th, young growers from across the Mid-Atlantic are welcome to view firsthand the research taking place at the Russel E. Larson Agriculture Research Center.
Pest Scouting With Your Smartphone
May 24, 2017
Have you noticed lately that many interstate rest stops are now called text stops? While the ever growing ubiquity of the smartphone has come with some issues, there are many opportunities to use this technology to make our lives a little easier, even on the farm.
Hard Cider Production Survey for Fruit Growers
May 24, 2017
The Penn State Extension Tree Fruit team has put together an online survey for fruit growers that currently grow or are interested in growing apples for hard cider.
NEWA Weather Station Maintenance
May 24, 2017
To keep your NEWA-connected weather station running in top shape this season, consult the on-line guides we put together on maintenance and troubleshooting.
Carbohydrate Model Results for May 22, 2017
May 22, 2017
Today most sites were calling for thinner application at your standard rates.
Disease Update May 19th, 2017
May 19, 2017
Beware of fire blight and bacterial spot conditions! Ideal conditions have been present for bacterial diseases to be problematic. Growers are encouraged to scout for fire blight.
Weekly Insect Bytes for May 19th, 2017
May 19, 2017
During a normal season in orchards with a pest pressure, the seasonal management of the codling moth (CM) larvae should be initiated at around 250 DD50 (Degree Days base 50F) after the biofix (April 25 in the Penn State FREC orchards).
Carbohydrate Model Results for May 19, 2017
May 19, 2017
We finally experienced some warmer temperatures where the true PGR materials are more effective.
Carbohydrate Model Results for May 15, 2017
May 15, 2017
Over the weekend most sites showed a positive balance of carbohydrates, meaning trees were less responsive to applications of chemical thinners.
Carbohydrate Model Results for May 12, 2017
May 12, 2017
One veteran pomologist made the comment that “something unique will occur every year that you did not ever experience before.” This year seems to bear out that axiom.
Cornell Carbohydrate Model Results for May 8, 2017
May 8, 2017
We are continuing to experience unusually cold weather across the state, and growers will need to continue to wait for a thinning window.
Weekly Insect Bytes for May 05, 2017
May 5, 2017
All pheromone traps for monitoring the most common fruit pests should already be in place in orchards.
Grape Berry Moth – A Serious Pest of Table Grapes in Pennsylvania
May 3, 2017
Grape Berry Moth (GBM) is an insect in the Order: Lepidoptera (moths and butterflies) and Family: Tortricidae.
Cornell Carbohydrate Model Results for May 1, 2017
May 1, 2017
The orchard site near the North East, PA Escarpment hit full bloom on Wednesday April 26 and is now included in our tables and charts.
Early Season Management of Insect and Mite Pests in Orchards
April 28, 2017
The warm weather and the accumulation of degree days, which in Pennsylvania are on pace with 2012 spring conditions, moved the development of plants and insect pests very rapidly forward.
Crop Load and Nutrient Management Practices to Prevent Bitter Pit in Honeycrisp
April 28, 2017
Multiple years of studies in grower orchards are providing additional clues for managing Honeycrisp in the orchard to prevent bitter pit following storage.
Fire Blight, Apple Scab, Rust, Plus Others: Be On Alert!
April 28, 2017
Conditions are optimal for fire blight, apple scab, and rust infections. Growers are encouraged to keep trees protected. Other diseases for the fruit grower radar are also discussed.
Extension Videos for the Upcoming Growing Season
April 27, 2017
The Penn State Extension Tree Fruit team has created videos to refresh growers on innovative growing techniques for the start of the 2017 growing season.
Check List for New Orchard Plantings
April 27, 2017
Timely tree training and integrated management of newly planted trees will ensure the success and future profitability of high density apple plantings.
Cornell Carbohydrate Model Results for April 26, 2017
April 26, 2017
Cloudy, warm weather may result in a greater tree response to chemical thinners this week.
Cornell Carbohydrate Model Variability
April 26, 2017
The reliability of the Cornell carbohydrate thinning model forecast is dependent on weather forecasts.
Cornell Carbohydrate Model Run for April 24, 2017
April 24, 2017
A few more weather stations are in full bloom. Normal rates of chemical thinners were recommended for the weekend, and decreased rates are suggested for the next 4 days.
Disease Update: Blossoms Still Open—Fire Blight Risk Continues
April 21, 2017
Conditions are favorable for fire blight and apple scab. Additional tools for the fire blight management toolbox are discussed.
Carbohydrate Model Run for April 20, 2017
April 20, 2017
Warm weather this past weekend pushed apple flower development, and growers will be looking for windows of opportunity for the application of chemical thinners.
Disease Update: Watch Out For Diseases during Apple Bloom
April 17, 2017
Bloom is well underway in parts of PA and MD. Fire blight and scab disease conditions are in full force now. Growers are encouraged to protect trees.
Insect Bytes for April 15, 2017
April 14, 2017
Despite the calendar indicating just the middle of April, all stone fruits and even some apple cultivars in southern Pennsylvania are already in bloom.
“Spring” Weather in February
March 31, 2017
While I panicked in February, the warm March weather slowed flower development and as it turned out, March was colder than February.
Scientists Have Some Wild Ideas for Solving Our Big Bee Problem
March 30, 2017
Christina Grozinger, Director of the Center for Pollinator Research at Penn State, discusses a holistic approach to fixing the pollinator problem.
Spring Orchard Meetings to Put on Your Calendars!
March 29, 2017
Penn State Extension has planned ten educational meetings for commercial tree fruit growers this spring.
Disease Update: Scab Infection Period March 27–April 1
March 28, 2017
Due to the presence of green tip on early varieties of apples combined with rain and mild temperatures occurring this week, we are in our first apple scab infection period for 2017.
Presentations from Winter Fruit Schools Now Available
March 10, 2017
Penn State Extension held nine regional educational meetings for commercial tree fruit growers this winter.
Tyvek® as a Tree Guard
March 10, 2017
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.
Spring Herbicide Applications
March 10, 2017
We just finished winter tree fruit meetings during which I talked about some new herbicide registrations.
Disease Management Strategies For The Grower Radar
March 10, 2017
Consider applying dormant sprays soon to manage fungal and bacterial diseases this season.
Time to Download the 2017 Spray Record-Keeping Spreadsheet
March 7, 2017
The updated Penn State Extension Spray Record-Keeping Spreadsheet for apples, pears, peaches, and cherries is now available from Penn State Extension.
Disease Update: Copper Sprays and Orchard Sanitation to Manage Diseases
March 3, 2017
Depending on your location, the warm weather over the last few weeks may have pushed some fruit trees along. For disease management, consider applying dormant copper and urea sprays soon.
Extension Asks Produce Growers, Food and Animal Feed Processors to Take Survey
February 28, 2017
Questionnaire will help Penn State Extension develop educational resources for businesses preparing for Food Safety Modernization Act.
On-Farm Research III: Evaluating Relationships Between Variables
February 28, 2017
Evaluating relationships between variables involves a statistical method called “regression analysis.”
Apples to Apples
January 26, 2017
Research in the college helps shape the apple industry.
Moldy Core Of Apple
January 20, 2017
Moldy core is characterized by the growth of fungus mycelium within the apple fruit seed cavity, without penetration into the flesh of the fruit.
A Look Back on 2016 and Calcium Problems
January 19, 2017
We heard and saw many problems with calcium deficiencies in commercial orchards this past year. I thought it would be a good idea to review how the 2016 growing season may have impacted those problems.