pear psylla

Pre-Harvest Pear Phenology Update

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 […]

graphs showing the current pear phenology (adult and egg, blue; early nymph yellow; old nymph orange) for three sites: cashmere, Hood River and Wapato, and Medford

Psylla Sampling Instructional Video

How to Sample for Pear Psylla Using Beat Trays Louie Nottingham demonstrates how to sample for pear psylla using the tray tap method, also known as the beat tray method.  You will need an 18″ x 18″ beat tray (DYI or available for purchase at some ag chemical companies), a tapping stick and a sampling […]

Pear Psylla Phenology Update

June 7, 2021 Pear Psylla’s Current Status: Old nymphs (hardshells) from the first generation are still present but declining. Summerform adults and eggs are rapidly building in cooler locations (Cashmere) and nearing peak at 1500DD in warmer ones (Medford). Early instar nymphs of the second generation are building in all locations, and will peak at […]

Psylla Phenology and Recommendations

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 […]

Evaluation of IPM for central WA pear orchards

February 9, 2021 IPM for Central WA Pear Orchards Pear psylla and honeydew marking to fruit cause significant economic damage to pears in Washington, a key pear growing region of the United States. The goal of this project is to compare an integrated pest management (IPM) program using materials which selectively target pests and relies […]

article title and abstract in the journal biological control

Prebloom Management of Pear Psylla with Particle Film

February 8, 2021 Psylla will soon be on the move! Louis Nottingham and Robert Orpet wrote an article in the February 2021 edition of ‘Tree Fruit News’ reminding growers to start preparing dormant sprays of kaolin clay (Surround) to deter pear psylla colonization in the orchard. A dormant Surround spray will provide the first line […]

Reflective mulch for pear psylla

November 19, 2020 New Publication! Pear psylla, Cacopsylla pyricola (Förster), has remained the most challenging pest of commercial pears in Washington and Oregon, the top producers of pears in the United States. The lack of effective integrated pest management tactics for this pest has been a major barrier to effective management. In this study, we […]

two people working in a pear orchard with reflective mulch

Surround applied in the fall for pear psylla management

November 19, 2020 Orpet and Nottingham article in ‘Fruit Matter’s Newsletter’ about potential for Surround applied in the fall for pear psylla management. Kaolin clay (Surround WP) is a white sprayable powder that discourages pear psylla from laying eggs on pear trees by creating a physical barrier over the tree’s surface. If sprayed early in […]