Psylla - Wikipedia
网页Psylla (from the Greek psulla, meaning flea) is a genus of sap-sucking insects belonging to the order Hemiptera. There are at least 110 described species in Psylla. [ 1][ 2][ 3] Species within the genus feed on various host plants.
Pear Psylla Integrated Pest Management | WSU Tree Fruit
网页Pear psylla (Cacopsylla pyricola [Foerster] [Hemiptera: Psyllidae]) is an important pest of pear in Washington. Honeydew produced by pear psylla causes fruit russet, and serious infestations can stunt and defoliate trees. History. Pear psylla likely arrived in the United States along with shipments of pear nursery stock from western Europe.
Pear Psylla / Pear / Agriculture: Pest Management Guidelines / UC ...
网页Pear psylla is one of the most serious insect pest of pears because of its ability to develop resistance to insecticides and to vector the pathogen that causes pear decline. Overwintering pear psylla adults are somewhat darker and larger (0.125 inch or 3 mm) than summer adults (0.08 inch or 2 mm).
Tree Fruit Insect Pest - Pear Psylla - Penn State Extension
网页2023年3月27日 · The pear psylla secretes large amounts of honeydew, which runs down over foliage and fruit and in which a sooty fungus grows. This causes the skin of the fruit to become blackened and scarred and the foliage to develop brown spots.
Pear Psylla | WSU Tree Fruit | Washington State University
网页In the Pacific Northwest, pear psylla is a pest only of pear. Pear cultivars vary in their suitability as hosts and, to a greater degree, in their susceptibility to damage from the honeydew. In general, russeted cultivars, such as Bosc, sustain less fruit damage than smooth skinned pears.
Pear Psylla (Cacopsylla pyricola) - USU
网页Pear psylla is a very small sap-feeding insect and is considered the most serious insect pest of pear in the United States. Serious infestations can stunt, defoliate, and even kill trees. Psylla feeding produces copious amounts of sticky honeydew that can cause fruit russeting.
Pear Psylla, Cacopsylla pyricola (Foerster) (Hemiptera: Psyllidae)
网页Pear psylla causes several types of damage in pear orchards: fruit russet, psylla shock, and pear decline. Of these, russet is of most concern to growers, and management protocols are generally aimed at preventing this injury. Fruit russet is …
Pear: Pear psylla | Hortsense | Washington State University
网页2024年6月5日 · The brownish-gray adult pear psylla is about 1⁄10″ long, with clear wings held rooflike over the body. The wings may have a smoky gray spot halfway along the inner margin. The red-eyed nymphs range in color from yellow to dark brown, depending on age. Pear psylla nymphs feed on leaves, preferring succulent new growth in the upper portions ...
Psylla pyri - Wikipedia
网页Psylla pyri, commonly known as the pear psylla or pear psyllid, is an insect in the family Psyllidae. Originating in Europe and Asia, it has spread to North America. It is a pest of pear trees, sucking the sap, damaging the foliage, flowers and fruit and diminishing the crop. [2]
Pear psylla - Integrated Pest Management - College of Agriculture …
网页Diligent hand removal of suckers can greatly reduce psylla populations. A balanced fertilizer program and avoidance of excessive nitrogen greatly reduces flush vegetative growth that attracts psylla. Many predacious insects are natural enemies, but commercial production often requires applications of broad-spectrum insecticides, highly refined ...