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Bitter pit showing up on apples at harvest.
Preharvest Assessment of the Potential for Bitter Pit in Honeycrisp - News News
This article describes a new test methodology that is available for growers that are interested in trying to predict the potential for a lot of fruit to develop bitter pit in storage. More
Excessive vigor from high nitrogen applications. Photo: Rob Crassweller, Penn State
Orchard Nutrition: How Do You Know What Fertilizers You Need? - News News
We are now into the main portion of the growing season for our tree fruits and over the hump of the early season pests and disease problems. Therefore, you can relax until harvest – right? More
Figure 1. Delicious fruit size on June 4, 2018 at Rock Springs, PA. Photo: Rob Crassweller, Penn State
Last Carbohydrate Model Run for 2018 - News News
As of June 11, 2018, most areas of the state are now at or beyond 30 days after reported full bloom. More
Carbohydrate Model Run - June 4 2018
Carbohydrate Model Run - June 4 2018 - News News
The high temperatures experienced in most of Pennsylvania last week were relieved Saturday into Sunday as rain moved across the state. More
Discoloration of developing fruitlets indicating they will be dropping. Photo: Rob Crassweller, Penn State
Carbohydrate Model Run: May 30, 2018 Ideal Weather for Thinning - News News
Since the last carbohydrate model report on May 25, last Friday, weather conditions were optimal to induce fruit drop due to chemical thinner application. More
Cornell Carbohydrate Model Run: May 25, 2018
Cornell Carbohydrate Model Run: May 25, 2018 - News News
Warm temperatures are affecting thinning. Most stations across the state are forecasting high temperatures to be in the 80’s today and for the next several days. More
M27 trees in bloom. Photo: Rob Crassweller, Penn State
Cornell Carbohydrate Model Run: May 21, 2018 - News News
Saturday in central Pennsylvania was overcast all day with early morning rain followed by rain on Sunday morning and then sun in the afternoon. More
Photo: Rob Crassweller, Penn State
Carbohydrate Model Run: May 18, 2018 Thinning Weather Has Changed - News News
We finished our May twilight meetings yesterday with the meeting in North East, PA. Beginning on Tuesday of this week most of our travel weather was overcast with much heavy rain. More
Carbohydrate Model Run: Thinning Time is Here!
Carbohydrate Model Run: Thinning Time is Here! - News News
It looks like spring finally arrived in the last two weeks and many orchards are thinning apples. 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
Empire buds. Photo: Rob Crassweller, Penn State.
Carbohydrate Model Update: April 24, 2018 - News News
As I prepare this note on the status of the carbohydrate model results, we still have two sites that have not reached green tip (GT). More
April 2 snow at Rock Springs. Photo: Rob Crassweller, Penn State
NEWA IPM Monitoring Available for Growers - News News
Funding from the SHAP Extension Committee has purchased a statewide membership to the NEWA IPM Monitoring system for 2018. More
Buy-and-Fly Orchard Management Using Unmanned Aircraft
Buy-and-Fly Orchard Management Using Unmanned Aircraft - News News
Using unmanned aircraft technology to help growers with orchard management. More
Please Participate in Our Online NEWA Survey!
Please Participate in Our Online NEWA Survey! - News News
Help us build our new Network for Environment and Weather Applications (NEWA) website! More
Photo: T. Baugher, Penn State
Carbohydrate Model Results for May 30, 2017 - News News
This is the last run of the season. I suspect that fruit size is or soon will be too large to provide adequate response to thinner application. More
10mm diameter fruit. Photo: R. Crassweller, Penn State
Cornell Carbohydrate Model Results for May 8, 2017 - News News
We are continuing to experience unusually cold weather across the state, and growers will need to continue to wait for a thinning window. More
Photo: R. Crassweller, Penn State
Cornell Carbohydrate Model Variability - News News
The reliability of the Cornell carbohydrate thinning model forecast is dependent on weather forecasts. More
Isoxaben may be very useful to newly planted orchards. Photo: Rob Crassweller
Spring Herbicide Applications - News News

Spring Herbicide Applications

03/10/2017

We just finished winter tree fruit meetings during which I talked about some new herbicide registrations. More
Excessive vigor leads to poor calcium levels. Photo: Rob Crassweller
A Look Back on 2016 and Calcium Problems - News News
We heard and saw many problems with calcium deficiencies in commercial orchards this past year. More