particle film

Leafhopper Insecticide and Particle Film Summaries

2020 and 2021 Leafhopper Insecticide Trials By Dr. Louis Nottingham and Dr. Katlyn Catron Methods: Colladonus reductus leafhoppers were collected from organic or unsprayed orchards’ groundcover (Fig. 1) via sweep nets, then returned to the lab. Leafhoppers were exposed to insecticides by direct sprays or previously treated leaves from cherry trees. After exposure, leafhoppers were […]

4 leaves are in a shallow dish of dirt, in a white insect net cage

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

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 […]

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 […]