Penn State Extension

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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
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
Top dominant trees in an older orchard. Photo: Rob Crasswellar, Penn State
Home Gardening: Pruning to Renovate Old Fruit Trees - Articles Articles

Home Gardening: Pruning to Renovate Old Fruit Trees

Robert Crassweller, Ph.D., Rich Marini, Ph.D., Tara Baugher, Timothy Elkner

Use judicious pruning to renovate older fruit trees in your home landscape. More
Trellis in apple orchard
Trellis Construction Workbook - Tools and Apps Tools and Apps

Trellis Construction Workbook

Robert Crassweller, Ph.D., Tara Baugher, Lynn Kime

This tool will assist growers with the decision making process of determining the cost of two trellis systems. 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
Climate Change and Orchards, Part 4: Managing Orchards in a Changing Climate
Climate Change and Orchards, Part 4: Managing Orchards in a Changing Climate - Videos Videos
As tree fruit growers, you will need to adjust your management practices to adapt to climatic changes, potentially using some of the options discussed in this video. More
Climate Change and Orchards, Part 1: What Changes Have Already Occurred?
Climate Change and Orchards, Part 1: What Changes Have Already Occurred? - Videos Videos
As you’ve just seen, the evidence behind climate science indicates that a number of changes have already occurred, which have had an impact on orchards. More
Climate Change and Orchards, Part 2: Seasonal Shifts
Climate Change and Orchards, Part 2: Seasonal Shifts - Videos Videos

Climate Change and Orchards, Part 2: Seasonal Shifts

Robert Crassweller, Ph.D.

6:34

A changing climate may cause winters in the temperate zones to become milder and growing seasons have lengthened. Both of these shifts could have a big impact on orchard production and management. More
Climate Change and Orchards, Part 3: Changes in Weather and Pest Populations
Climate Change and Orchards, Part 3: Changes in Weather and Pest Populations - Videos Videos
The occurrence of intense and erratic weather poses the most serious threat to fruit production. A changing climate also means changes in pest populations. More
Peach Disorders - Skin Damage
Peach Disorders - Skin Damage - Articles Articles

Peach Disorders - Skin Damage

Robert Crassweller, Ph.D.

Skin damage has been a problem in packed stone fruit in some years but it has been somewhat erratic here in PA. More
Brett Saddington talking with Dr Rob Crassweller about ideal tree fruit density.
Models for the Future: Bedminster Orchard - Articles Articles

Models for the Future: Bedminster Orchard

Marley E Skinner, Megan Chawner, Tara Baugher, Robert Crassweller, Ph.D.

Bedminster Orchard is located on 16 Acres in Perkasie, Pa and is owned and operated by Brett Saddington. More
Apple Rootstocks for High Density Orchards
Apple Rootstocks for High Density Orchards - Videos Videos

Apple Rootstocks for High Density Orchards

Robert Crassweller, Ph.D., Tara Baugher, Michael Basedow

9:53

Commercial fruit growers are transitioning their apple orchards to high density production systems, and this is possible due to the availability of size-controlling apple rootstocks. More
Construcción de Enrejados para Huertas con Sistemas de Alta Densidad
Construcción de Enrejados para Huertas con Sistemas de Alta Densidad - Videos Videos

Construcción de Enrejados para Huertas con Sistemas de Alta Densidad

Tara Baugher, Robert Crassweller, Ph.D., Montserrat Fonseca Estrada, Mike Basedow

17:49

Un sistema bidimensional de formación de manzanas de alta densidad, a menudo denominado "muro frutal", proporciona muchos beneficios al productor de frutales. More
Manzanas para venta al por menor
Manzanas para venta al por menor - Videos Videos

Manzanas para venta al por menor

Robert Crassweller, Ph.D., Montserrat Fonseca Estrada, Michael Basedow

11:56

En este video, hablaremos acerca de los cultivos de manzana que tienen las caracteristicas necesarias para operaciones de mercados al por menor. More
Ambrosia fruit. Photo: R. Crassweller, Penn State
Orchard Nutrition: Determining Orchard Fertility Needs - Articles Articles
The Mid-Atlantic region is blessed with an abundant supply of good fertile soils that can produce high quality deciduous fruit. More
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