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Fruits in Slovenia - Pear Psylla

Fruits in Slovenia - Pear Psylla

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Datum izida:9/22/2004 8:52:00 AM
Oblikovanje:Matjaž Učakar
Motiv:Pear Psylla
Tisk:DELO Tiskarna, d. d. , Ljubljana
Izvedba:4-colour offset
Papir:Chancellor oba free, L. S. PVA GMD 102 g/m2, gummed
Velikost:
Zobčanje:Comb
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Fruits in Slovenia - Pear Psylla

<b>Pear Psylla (Cacopsylla pyricola)</b><p>Pear psylla is the most serious insect pest of pears. Damage is caused by nymphs that develop primarily on tender new growth and feed by sucking sap from the developing buds, leaves and shoots. Pear psylla infestation thus stunts the growth of leaves and may even cause flowers, fruit buds and leaves to shrivel. In addition, nymphs produce a large amount of honeydew, which drips onto and congregates on lower shoots, leaves and fruit, and promotes the growth of sooty mold (black fungus). This gives severely affected orchards a black appearance and downgrades fruit quality. Pear psylla adults resemble miniature cicadas with wings held roof-like over the abdomen and jump from leaves when disturbed.