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Tree Fruit News – August, 2021


Tree Removal Methods for X-Disease and Little Cherry Disease- Preliminary Trial Report

In 2019 and 2020 four trials and four grower case studies were conducted to clarify recommendations for tree removal when trees are infected with Little cherry disease or X-disease. This study provides preliminary data showing…

The effect of Candidatus Phytoplasma pruni infection on sweet cherry fruit

Published in Phytopathology Journal online on May 7, 2021, by Wright AA, Shires MK, Beaver C, Bishop G, Dupont ST, Naranjo R, Harper S.  Summarized by Corina Serban, August, 2021   Candidatus (Ca.) Phytoplasma (P.)…

High spatiotemporal apple crop water use mapping using drone imagery

Written by Abhilash K. Chandel1, Lav R. Khot1, R. Troy Peters1, Claudio O. Stöckle1, Steve Mantle2 1Department of Biological Systems Engineering, Washington State University, Pullman, WA, Walla Walla, WA   Evapotranspiration (ET) is the…

Pear Psylla Phenology Update

Written by Louis Nottingham, August 9, 2021 Pear Psylla’s Current Status: The 2nd generation of summerform adults are at or past peak in most regions. Young nymphs of the 3rd generation are nearing peak and…

Evaluations of Insecticides Against Leafhoppers: Summer 2021 Results

Written by Louis Nottingham and Katlyn Catron, August 9, 2021 Introduction Data showing efficacy of insecticides against leafhopper vectors of x-disease is still relatively sparse. To address this, we performed two lab bioassays to screen…

Fruit nutrient sampling at harvest – Making apples to apples comparisons among blocks and storage lots

Written by Lee Kalcsits and Bernardita Sallato, Washington State University, August 2021   The goal of nutrient sampling at harvest is to understand the nutrient composition of the fruit in an orchard or pick to…
damaged Gala apples on tree

Sunburn in apple and strategies to mitigate it

Written by Jenny L. Bolivar-Medina, ITT WSU Extension, and Lee Kalcsits, Endowed Chair WSU Horticulture. August 2021. In this article there is a brief description of what is sunburn, types of sunburn and the current…

Quemadura de sol en manzanas y estrategias para mitigarla.

Escrito por  Jenny L. Bolivar-Medina, ITT WSU Extension, y Lee Kalcsits, Endowed Chair WSU Horticulture. Agosto 2021. En este artículo se describe brevemente que es la quemadura de sol, sus clases y las estrategias que…

Understanding WA 38 Greasiness and Management During Packing 2020-2021 Warehouse Survey

Written by Chris Hedges, Extension ITT Coordinator Specialist, WSU TFREC and Carolina A. Torres, Associate Professor of Horticulture, Endowed Chair of Postharvest Systems, WSU TFREC, August 2021   Collaborators: WA fruit packing companies   Summary WA 38…


Honeycrisp Meetup: Post Harvest. Part 1.

Honeycrisp Meetup: Post harvest Session. Dr. Randy Beaudry, Michigan State University professor, gives an overview of Honeycrisp problems during storage. Meeting hosted by Mario Miranda Sazo, Cornell Cooperative Extension, Anna Wallis, Michigan State University and…

Honeycrisp Meetup: Post Harvest. Part 2.

Honeycrisp Meetup: Post harvest session. Dr. Christopher Watkins, Cornell University. Shares a short overview about the effect of plant growth regulators (PGRs) on Post Harvest Management. Webinar series hosted by Mario Miranda Sazo, Cornell Cooperative…

Honeycrisp Meetup: Post Harvest Part 3. Q&A

Honeycrisp Meetup: Post harvest session. Questions and Answers regarding Honeycrisp post harvest management. Include faculty experts from Cornell University, Michigan State University, Washington State University and experienced growers: Bruce Allen, Washington and Chris Kropf, Michigan….

Honeycrisp Meetup: Post Harvest. Part 4. Brainstorming.

Honeycrisp Meetup: Post harvest session. Brainstorming session. Bernardita Sallato talks about a new problem WA growers are facing with Honeycrisp she has been investigating. Experts from Cornell University, Michigan State University, Washington State University and…


FSA Tree Assistance Program Offers Support for Little Cherry Tree Removal

New August 2020 when X-disease or Little Cherry infections reach or exceed 20% of a stand the whole block may be eligible for tree loss assistance from the Tree Assistance Program (TAP).


Corina F. Serban joins WSU Tree Fruit Extension Team

  We are excited to welcome Corina Serban to the Tree Fruit Team as the new LCD – ITT Extension Coordinator. Corina is responsible for providing oversight and leadership for Little Cherry Disease (LCD) Extension…



Karen Lewis
Tianna DuPont
Dani Gray
Gwen Hoheisel
Marcella Magby
Manoella Mendoza
Claire Murphy
Ricardo Lima Pinto
Jodi Rinaldi
Bernardita Sallato
Tory Schmidt
Corina Serban


The August 2021 edition of Fruit Matters was edited by Chris Hedges, WSU Extension

Washington State University