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Tree Fruit News Jan 2021


Welcome! New Extension ITT Coordinator Specialist in Post-harvest Systems

Chris Hedges has been hired to work with the WSU Tree Fruit Extension Team and the Carolina Torres post-harvest systems program. Chris is a native of Wenatchee and has worked in the tree fruit industry…

New Resources for Sprayers

The goal for all pesticide applications should be to get every drop to the crop. Calibration ensures that the appropriate product rate is applied by the sprayer, while optimization ensures that the product is delivered…

New Pear Psylla Project Initiation: Precision Management using pear psylla degree-day model

Pear psylla has been a top challenge to pear growers in the PNW since it first arrived in the 1940s. Chemical insecticides have never been a fully effective option for many reasons including large, dense…

Pear IPM Case Studies: Honeydew Washing at Four Orchard Locations

This article reports the findings of four case studies utilizing different scenarios for washing honeydew in pear orchards and the effect it had on IPM. Each study gives the system specifications, impact on honeydew levels,…

Canker Removal Now is Critical for Fire Blight Management this Year

Fire blight cankers left in the orchard are the source for new infections next spring. Remove them now!


Manejo del vigor en huertas y su relación con el rendimiento

Esta presentación, dada en español, provee información general acerca del vigor, factores que influyen en el manejo de la huerta y la influencia de los portainjertos en el vigor y producción de la huerta. This…

Enfermedad de la cereza pequeña en cerezos

Bernardita Sallato comparte información respecto a la enfermedad de la cereza pequeña, síntomas para su identificación, medidas de prevención y control de vectores.

Rootstock Differences in WA 38

Bernardita Sallato talks about a two-year project on root growth differences between WA 38 trees grown on G 41 and M9-Nic 29 rootstock and possible relation with green spot development.

Nutrient differences in WA 38 apples with and without green spot

Bernardita Sallato explains nutrient composition differences between WA 38 apples with and without green spot, and how rootstock and growing systems can influence green spot development.


Winter Educational Opportunities

WSU Tree Fruit Extension will provide a variety of learning opportunities this fall and winter in order to continue to bring growers research-based information while maintaining your safety from Covid19. Opportunities will include webinar series,…

Cherry Institute January 21, 2021

This year’s Cherry Institute will be a little different. Due to the current COVID-19 restrictions in place, the organizers have planned for an entirely virtual venue. Each individual program item is listed in our events…

Bee Pollinator Webinars

Join me for two exciting pollinator health webinars featuring Dr. Andony Melathopoulos, Assistant Professor of Pollinator Health and Dr. Chris Adams, MCAREC Entomologist. One ODA pesticide credit is available for each webinar. You must register…

SOILCON – WA Soil Health Week

A week of soil health presentations from experts across the nation and Washington State. View only those presentations that interest you.

Cosmic Crisp®/ WA 38 Webinar Scheduled

WSU and PVM have scheduled a Cosmic Crisp®/ WA 38 webinar for 10:30am-11:45am on Tuesday Feb 9, 2021. Pre-registration is required, and participants must be signed into their zoom account to enter the webinar.   Register…

Upcoming WTFRC Research Reviews

The 2021 WTFRC Apple Horticulture/Postharvest Research Review and Apple Crop Protection Research Review will be held on January 27 and 28, respectively.


Towards rapid detection and mapping of powdery mildew in apple orchards

Chandel, Khot, Sallato Dec 2020. Powdery mildew (PM) in apples is a critical fungal disease that adversely affects yield and fruit quality. Conventional PM identification techniques are laborious. This study evaluated the suitability of non-destructive…


Why isn’t fruit set perfect in cherry and pear? Polllinator Health Webinar Part 1

Jan 14 | Online webinar

WSU Tree Fruit Days

Jan 18 |

Organic Apple Mildew Management: Webinar

Jan 18 | Webinar

The Latest Fire Blight Research: Webinar

Jan 18 |

Selecting New Varieties: Webinar

Jan 18 |

Mating Disruption as a Basis for Apple IPM & Coverage is Key in Apple IPM: Webinar

Jan 19 | Webinar

Codling Moth Apple IPM – Don’t Forget the Basics, SIR Update: Webinar

Jan 19 | Webinar

The Labor Piece of the Production Puzzle: Webinar

Jan 19 | Webinar

Pear IPM: Webinar

Jan 20 | Webinar

Using Honeydew Washing to Improve Pear IPM: Webinar

Jan 20 | Webinar

Irrigating Pears for Quality: Webinar

Jan 20 |

X-disease and Little Cherry Virus: Webinar

Jan 21 |

Building bee habitat in mid-Columbia orchards – Pollinator Health Webinar Part 2

Jan 21 | Online webinar

Cherry Powdery Product Resistance: Webinar

Jan 21 | Webinar

Rodent Control for Orchards: Webinar

Jan 22 | Webinar

Apple Thinning: Webinar

Jan 22 | Webinar

Matching Rootstocks to Scions and Varieties

Jan 22 | Webinar

2021 Apple Horticulture/Postharvest Research Review

Jan 27 | Online webinar

2021 Apple Crop Protection Research Review

Jan 28 | Online webinar


Feb 8 | Virtual

Cosmic Crisp®/ WA 38 Webinar Scheduled

Feb 9 | Online webinar

2021 NW Pear Research Review

Feb 17 | Online webinar



Karen Lewis

Jenny Bolivar-Medina

Tianna DuPont

Chris Hedges

Gwen Hoheisel

Bernardita Sallato

Tory Schmidt

Corina Serban

Ashley Thompson


Washington State University