First Generation Leafhopper Adults Now Present

First generation adult leafhoppers known to transmit X-disease are now present in Washington orchards. Consider monitoring. C. m. reductus adults were collected at most survey sites last week, including those in Yakima, Mattawa, and Peshastin.

Seven leafhoppers are known to transmit X-disease phytoplasma: Colladonus montanus reductus, Colladonus geminatus. Colladonus montanus, Fiebriella florii, Scaphytopius acutus, Paraphlepsius irroratus, Euscelidius variegatus and the two most commonly caught carrying phytoplasma in Washington are C. reductus and C. geminatus.

Use yellow sticky cards or sweep nets to monitor your leafhopper population. Place traps on orchard borders two or three trees from the edge, in areas of concern in your block and throughout block. Approximately one (1) trap per two acres. Monitor weekly. Use presence (an average of one leafhopper per trap) as a threshold to spray. Identify leafhoppers that vector X-disease phytoplasma. See the vector gallery for images. To download the app with insect vector images search for ‘Little Cherry Scouting Guide’ in your App Store. For an Apple version click here or for Android version click here.

 

Additional information

X-disease webpage

Little Cherry Virus webpage

Symptoms Gallery

X-disease Vector Gallery

Nursery Prevention of X-disease Phytoplasma and Little Cherry Virus Recommendations

BMPs for tree removal for X-disease and Little Cherry Virus infected trees

Case studies on tree removal for X-disease phytoplasma and Little cherry virus

Alternative weedy hosts for X-disease phytoplasma.

Videos

Symptoms of Little Cherry Virus and X-disease Phytoplasma.

Síntomas de Fitoplasma X y Little Cherry Virus.

Symptoms of X-disease Phytoplasma in Stone Fruit.

Síntomas de Fitoplasma X en Frutas de Hueso.

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Contacts

 

 

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