Cacopsylla pyricola (Foerster) (Hemiptera: Psyllidae) Updated by Louis Nottingham, Robert Orpet, WSU Entomology; Tianna DuPont, WSU Extension. May 2022. Adapted from by Everett C. Burts, Helmut Riedl, and John Dunley, originally published 1993. Pear psylla is an important pest of pear in Washington. Honeydew produced by pear psylla causes fruit russet, and serious infestations can […]
IPM was as effective as conventional management at controlling pear psylla by Molly Sayles, Robert Orpet, and Louis Nottingham November 28, 2022 IPM works by having a spray program that promotes natural enemies, which provided effective (and free!) control of pear psylla. This season revealed that IPM can control pear psylla as effectively as conventional […]
Sticking the landing, post-harvest psylla populations by Chris McCullough, Robert Orpet, Molly Sayles, and Louis Nottingham November 7, 2022 During the 2022 pear growing season, our WSU pear entomology team monitored pear psylla and its natural enemies (predators and parasitoids) across orchards in the Wenatchee Valley. Orchards were either conventional, organic, or followed our new […]
Integrated Pest Management Programs for Pear Psylla, Cacopsylla pyricola (Förster) (Hemiptera: Psyllidae), Using Kaolin Clay and Reflective Plastic Mulch September 1, 2022 Pear psylla, Cacopsylla pyricola (Förster) (Hemiptera: Psyllidae), is the most economically important pest of pears grown in Washington State. Standard conventional management programs involve season-long broad-spectrum insecticide sprays. Although the industry uses some […]
March 1, 2022 Pear Psylla Phenology IPM Guide will help manage pear psylla using the new degree day model! As temperatures warm and the snow melts, it is time to think about pear psylla management. In warmer areas like Oregon and southern Washington, psylla are already back in the orchards and laying eggs. In central […]
February 10, 2022 Pear psylla phenology, pre‐bloom kaolin, and insect growth regulators, summer pruning, timing honeydew washes, summer covers, fall kaolin. A presentation by Louis Nottingham, WSU Entomology at North Central Washington Tree Fruit Days, January 20, 2022.
Join us for pear study circles this winter – they’re free! It’s a great learning opportunity for growers, consultants, researchers, and industry professionals. Our goal is to improve pear profitability and sustainability. Each study circle will include a 30 minute presentation and 2 hours of facilitated discussion. Topics include: Oct 19, 2021 – Choosing products […]
The Nottingham Lab’s work on pear IPM was the feature spread in the September 2021 issue of the Good Fruit Grower. Check it out! Putting IPM to work
Pear Phenology Update, 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 increasing. Hardshells of the 3rd generation are within the first 25% and rising. If biocontrol is present in orchards (IPM and […]
June 1, 2021 Pear Psylla’s Current Status: Some old nymphs from the first generation are still present but declining. Summerform adults and eggs are building in orchards (about 25-30% of the peak population are now present). Adults and eggs will increase until the peak at 1500 DD. Early instar nymphs of the second generation are […]
