Last edited by Bamuro
Friday, July 31, 2020 | History

3 edition of Pear psylla found in the catalog.

Pear psylla

Arthur H. Retan

Pear psylla

by Arthur H. Retan

  • 132 Want to read
  • 16 Currently reading

Published by Cooperative Extension, College of Agriculture, Washington State University in Pullman, Wash .
Written in English

    Subjects:
  • Pear psylla,
  • Psylla -- Washington (State)

  • Edition Notes

    Statement[prepared by Arthur H. Retan, Everett Burtts, vanelle Peterson].
    Series(EB / Cooperative Extension, College of Agriculture, Washington State University -- 0906), Extension bulletin (Washington State University. Cooperative Extension) -- 906.
    ContributionsBurtts, Everett., Peterson, Vanelle.
    The Physical Object
    Pagination[2] p. :
    ID Numbers
    Open LibraryOL17609319M
    OCLC/WorldCa11435417

    The second edition of Integrated Pest Management for Apples and Pears, published in August , offers the most comprehensive, up-to-date information on the management of pests in apples and pears. Written in the same easy-to-read format as the edition, this manual draws on the expertise of more than 70 University of California researchers, Cooperative Extension specialists, farm. Pear psylla Peppertree psyllid Pillbugs Pine shoot moths Pine tip moths Plant bugs Redhumped caterpillars Sawfly larvae Scale insects (crawler stages) TEMPO SC ULTRA controls designated pests on trees, shrubs, foliage plants and flowers in outdoor landscaped areas and interior plantscapes where these plants are grown. Cutworms Elm leaf beetles.

    Pear psylla, Cacopsylla pyricola (Foerster) (Homoptera:Psyllidae). In: J.L. Capinera (ed.), Encyclopedia of Entomology. Kluwer Academic Publishers. Interpretive Summary: This paper summarizes the life history, control, monitoring, and biological control of pear psylla, one of the major arthropod pests in commercial pear production.   Pear Psylla. Pear psyllas are sucking insects that attack all types of pear trees. They jump on trees and feed on the sap from leaves, producing sticky drops of honeydew that coat both the tree and its fruit. This formation of honeydew damages a .

    Cornell Pest Management Guidelines for Commercial Tree Fruit Production – Critical pesticide information for managing diseases, insects, mites, weeds, wildlife, and nutrients, updated yearly.; Guidelines for Fire Blight Management in New York; Apple IPM for Beginners – Simplified fact sheets and scouting guides make integrated pest management easier for beginners. Pear psylla. Pear psylla, Cacopsylla pyricola (Foerster), are sucking insects that can cause damage to ornamental and edible varieties of pears. For more information and images of pear psylla, check the following links: UC IPM Online: Pear psylla This site is one of .


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Pear psylla by Arthur H. Retan Download PDF EPUB FB2

The Pear-tree Psylla Paperback – Septem by Mark Vernon Slingerland (Author) See all formats and editions Hide other formats and editionsCited by: 1. Biology and life history Pear psylla overwinter in a semi-dormant state as winterform adults on a variety of fruit trees.

They return to pears and begin laying eggs at bud swell. The Pear psylla book are shaped like grains of rice and are yellow-orange at maturity. These are laid at. Pear psylla, similar to cicadas and aphids, attack all types of pear trees but are more dangerous for European than Asian varietals.

Though very tiny, generally less than 3 millimeters in length, the insects can puncture and damage leaves, affect tree vigor, cause fruit drop, and honeydew secretions on fruit can lead to soot or mold.

Attacks pear exclusively. Motile stages are "flush feeders" that suck sap from newer, tender growth, and secrete excess fluid as honeydew.

This collects on leaves and fruits, provides a good medium for sooty mold growth (D). Psylla feeding can kill leaf tissue (called "psylla scorch") in sunny, dry conditions.

Pear psylla, similar to cicadas and aphids, attacks all types of pear trees. Less than millimeters in length, they puncture leaves, drawing sap. The grape mealybug is a pest of most deciduous fruit crops, including pear trees. It is slow to spread, but once infested is.

Labels related to the pest - Psylla, Pear. Toggle navigation. Pear psylla is a serious foe in Pacific Northwest orchards, accounting for more than half of a pear grower’s pest management expenses and about 20 percent of total nonfixed operating costs.

If not properly controlled, the pest can also downgrade fruit. Psylla pyri, commonly known as the pear psylla or pear psyllid, is a true bug 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.

Description. The adult Psylla pyri is between 2 and 3 mm ( and 0 Family: Psyllidae. The pest rapidly dispersed from the eastern U.S., ultimately reaching the pear-growing regions of western North America in the early s.

The species apparently now occurs in all pear-growing regions of North America. With codling moth, Cydia pomonella(L.), pear psylla is the major insect pest attacking commercial pears in North America.

Pear Varieties. With a couple of thousand pear varieties out there, it’s impossible to list them all. If you’re considering growing pears in your yard keep in mind that there.

The summer treatment threshold for pear psylla is one psylla nymph/three leaves. Management Start with oil sprays in early spring, which deter egg laying. Then beginning at bud break use insecticides with good-excellent efficacy against pear psylla.

Focus on early season management to keep psylla from becoming a season-long problem. Pear psylla is a greater problem on European varieties than on Asian varieties. Pear psylla damages pears in several ways. Loss of crop and tree vigor, and sometimes loss of trees, can occur from pear decline disease, caused by a phytoplasma organism that psylla injects into pear trees.

Michigan pear producers know that management of pear psylla presents a challenge each season. Psylla become active early and numbers can quickly grow to unacceptable levels.

Also, the ability of this pest to rapidly develop insecticide resistance makes it especially important to carefully consider each material included in a management plan. Pest description and crop damage Pear psylla is one of the major pear pests in commercial orchards.

The adult resembles a miniature cicada. Adults have two distinct forms, a summer and winter form, which differ in appearance. Winterform adults are inch long, dark in appearance, with transparent wings held roof-like over the body.

In most regions of Washington, the first generation of pear psylla nymphs have completed development, giving way to the first round of summerform adults. Summerforms will mate, lay eggs and disperse over the next few weeks or longer. A major challenge to managing the second generation of psylla is the diminishing congruence among life-stages.

Economic entomology for the farmer Economic entomology for the farmer and fruit-grower [microform]: and for use as a text-book in agricultural schools and colleges.

economicentomolo00insmit Year: The pear-psylla,—a, pupa from under side, showing the thread-like piercing lancets; to the right, a winged adult and stalked egg. cicada. Surround® will control the same insects as on apples plus pear psylla.

Note: fruits expand quickly after petal fall, so keep fruits covered with Surround® to maintain maximum protection. How to tell if a pear is ripe Whether you're a beginner or an experienced gardener, planting and caring for a pear. Pear. Damage. Presence of honeydew and black sooty mold on fruit (Fig.

1), leaves and bark, and brownish-black patches of dead tissue on leaves indicates pear psylla infestations (Fig. Sooty mold grows on the honeydew secreted by psylla nymphs.

Heavy infestations can cause premature leaf drop, weaken fruit buds and reduce shoot growth. Get this from a library. An analysis of pear psylla populations [R E Fye; United States. Science and Education Administration. Agricultural Research. Western Region.].

First, pears are very resistant to horticultural oils, (standard app cautions apply), and is recommended as an effective preventative against pear psylla at 1% through the summer.

But Hort oils tend to be pretty refined and don't have any nasty stuff, much less good stuff like FAs. Pear psylla damages pears in several ways. Loss of crop and tree vigor, and sometimes loss of trees, can occur from pear decline disease, caused by a phytoplasma organism that psylla injects into pear trees.

Pear decline has varying effects on the trees depending on variety, rootstock, quality of the growing site, and pear psylla numbers.The pear psylla, Cacopsylla pyri (Hemiptera: Psyllidae), offers an opportunity for slower-acting fungal entomopathogens because it is a foliage feeder that does not directly damage fruit, allowing time for spores to germinate, infect, and kill psyllids before damage occurs.Other possible pests include aphids, apple maggots, cherry fruit flies, plum curculio, pear midge, spider mite and pear leaf blister mite, pear thrips, pear slug, and pear psylla.

Diseases that can occur include stony pit, which is caused by a virus, and various kinds of fruit rot.