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Fruit Times

Photo: R. Crassweller, Penn State
May 19, 2017

We finally experienced some warmer temperatures where the true PGR materials are more effective.

Aerial image of Penn State’s research hopyard at Rock Springs. Photo by T. Delvalle, Penn State
May 16, 2017

You probably have heard of (or observed) the use of small unmanned aircraft systems (sUAS) throughout the country; whether it be for fun, a hobby, for capturing great aerial pictures, or commercial use.

Photo: R. Crassweller, Penn State
May 15, 2017

Over the weekend most sites showed a positive balance of carbohydrates, meaning trees were less responsive to applications of chemical thinners.

8mm fruit size in Erie on May 11, 2017. Photo: R. Crassweller, Penn State
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.

10mm diameter fruit. Photo: R. Crassweller, Penn State
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.

Plum Curculio adult on young apple fruit. Photo: G. Krawczyk, Penn State
May 5, 2017

All pheromone traps for monitoring the most common fruit pests should already be in place in orchards.

Figure 1. Grape Berry Moth adult on Concord leaf. Photo: Andy Muza, Penn State
May 3, 2017

Grape Berry Moth (GBM) is an insect in the Order: Lepidoptera (moths and butterflies) and Family: Tortricidae.

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.

Peach shoot injured by Oriental fruit moth larvae. Photo: G. Krawczyk, Penn State
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.

Bitter pit begins to show up on Honeycrisp several weeks before harvest and the incidence can increase two- to four-fold after a month in storage. Photo: Tara Baugher
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.

Protect any trees still in bloom: Fire blight conditions ideal April 29 through May 2. (Photo: K. Peter)
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.

April 28, 2017

A summer Vegetable and Fruit Field Day at Penn State’s Russell E. Larson Agricultural Research Center is being planned for July 12th!

Different dormant plant sizes. Photo: K. Demchak, Penn State
April 28, 2017

A successful strawberry planting hinges on getting the basics right at planting time. If you can pay attention to the basics, you are well on your way to having a vigorous planting.

The video “Apples for the Retail Market” provides Dr. Rob Crassweller’s recommendations for varieties to grow for a farm market or retail stand.
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.

 Shortly after tree growth begins, gently remove the 3 developing shoots below the leader to eliminate competition for leader growth. Photo: Tara Baugher
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.

Apple flowers, 2016. Photo: Rob Crassweller, Penn State
April 26, 2017

Cloudy, warm weather may result in a greater tree response to chemical thinners this week.

Photo: R. Crassweller, Penn State
April 26, 2017

The reliability of the Cornell carbohydrate thinning model forecast is dependent on weather forecasts.

Photo: T. Baugher, Penn State
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.

Be proactive about fire blight management: Let’s not repeat 2014. (Photo: B. Lehman)
April 21, 2017

Conditions are favorable for fire blight and apple scab. Additional tools for the fire blight management toolbox are discussed.

Photo: Tara Baugher, Penn State
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.