AgNIC Tree Fruit Site

Washington State University Tree Fruit Research and Extension Center: information on entomology, horticulture, postharvest pathology, soils and nutrition, organic and integrated fruit production.

Apples
Apples and More (University of Illinois Extension)
Apples and Pears: a calendar of operations for home gardeners (University of California)
Apple Thinning Sprays (University of California)
The Best Apples on Earth (Washington Apple Commission)
Home Fruit Production: Apples (University of Missouri-Columbia Extension)
Picking and Storing Apples and Pears (Oregon State University Extension)
Pruning to Restore an Old, Neglected Apple Tree (Oregon State University Extension)
Virtual Orchard: Apple Production
Washington Apple Education Foundation
Apple Genome

Apples - Varieties
Apples and More: Varieties (University of Illinois Extension)
Apple Varieties and their Uses: (University of Missouri at Columbia)
Apple Research (WSU Mount Vernon NW Washington Research & Extension Center)
Tree Fruit for the Backyard: Apples (University of Illinois Extension)

Apples -- Diseases and Pests
Apple Diseases and Disorders (Washington State University)
Apple Entomology (Washington State University)
Apple Pest Management: Apple Nematodes (University of California)
Cedar Apple Rust
The Mystery of the Wormy Apples

Apricots
Apricot Varieties
California Apricot History

Apricots -- Diseases
Armillaria Root Rot: (Armillaria mellea)
Bacterial Canker: (Pseudomonas syringae)
Brown Rot Blossom and Twig Blight: (Monilinia laxa and Monilinia fructicola)
Crown Gall: (Agrobacterium tumefaciens)
Eutypa Dieback: (Eutypa lata)
Jacket Rot: (Botrytis cinerea, Sclerotinia sclerotiorum, Monilinia laxa, and M. fructicola)
Phytophthora Root and Crown Rot: (Phytophthora spp.)
Powdery Mildew: (Sphaerotheca pannosa and Podosphaera tridactyla)
Ripe Fruit Rot: (Monilinia fructicola and Monilinia laxa)
Shot Hole Disease: (Wilsonomyces carpophilus)
Verticillium Wilt: (Verticillium dahliae)

Apricots -- Insects, Mites and Nematodes
Apricot Nematodes: covers Root lesion nematode (Pratylenchus vulnus), Dagger nematode (Xiphinema americanum), Ring nematode (Criconemella xenoplax) and Root knot nematode (Meloidogyne sp.)
Branch and Twig Borer: (Melalgus confertus)
Brown Mite: (Bryobia rubrioculus)
Cribrate Weevil: (Otiorhynchus cribricollis)
European Earwig: (Forficula auricularia)
European Fruit Lecanium: (Parthenolecanium corni)
European Red Mite: (Panonychus ulmi)
Fruittree Leafroller: (Archips argyrospila)
Obliquebanded Leafroller: (Choristoneura rosaceana)
Orange Tortrix: (Argyrotaenia citrana)
Pacific Flatheaded Borer: (Chrysobothris mali)
Peachtree Borer: (Synanthedon exitiosa)
Peach Twig Borer: (Anarsia lineatella)
Redhumped Caterpillar: (Schizura concinna)
Shothole Borer: (Scolytus rugulosus)
Webspinning Spider Mites: (Tetranychus pacificus and Tetranychus urticae)
Western Tussock Moth: (Orgyia vetusta)

Cherries
Black Knot of Plums and Cherries (pdf)
Cherry 2003 Pest Management Guide for the Willamette Valley
Cherry Bark Tortrix Moth
Cherry-Plum Hybrids for Saskatchewan
Common Chokecherry
Stone Fruit Insects: Briefly discusses damage, treatment and cultural practices of Peach Tree Borer (Synanthedon exitiosa), Green Peach Aphid (Myzus persicae) and Mealy Plum Aphid (Hyalopterus arundinis), Cherry Curculio (Tachypterellus consors ssp. cerasi), Plum Gouger (Anthonomus scutellaris), Western Cherry Fruit Fly (Rhagoletis cingulata), Western Cherry Fruit Fly (Rhagoletis cingulata), Peach Twig Borer (Anarsis lineatella), Pear Slug or Pear Sawfly (Caliroa cerasi), Shothole Borer (Scolytus rugulosus). by W.S. Cranshaw and R.J. Zimmerman of Colorado State University Cooperative Extension.
Tree Fruit for the Backyard: Cherries.
Apple and Thorn Skeletonizer
Index of Fruit Insect Pest Photographs. West Virginia University
Microsoft Excel Functions for Insect Pest Development Models
Washington State University
Plum Shothole Borer (Scolytus rugulosus): University of California's Pest Management Guidelines. This document includes a description of the pest, the damage it causes, methods of cultural control.
Stone Fruit Insects: Briefly discusses damage, treatment and cultural practices of Peach Tree Borer (Synanthedon exitiosa), Green Peach Aphid (Myzus persicae) and Mealy Plum Aphid (Hyalopterus arundinis), Cherry Curculio (Tachypterellus consors ssp. cerasi), Plum Gouger (Anthonomus scutellaris), Western Cherry Fruit Fly (Rhagoletis cingulata), Western Cherry Fruit Fly (Rhagoletis cingulata), Peach Twig Borer(Anarsis lineatella), Pear Slug or Pear Sawfly (Caliroa cerasi), Shothole Borer (Scolytus rugulosus). by W.S. Cranshaw and R.J. Zimmerman of Colorado State University Cooperative Extension.
The University of California Statewide Integrated Pest Management Project. University of California, Davis

Diseases (See also diseases under individual tree fruits)
2003 Crop Protection Guide for Tree Fruits in Washington
Diseases of Deciduous Fruit Trees, Iindex to Plant Disease Articles, 1990-1997. West Virginia University
Index of Tree Fruit and Small Fruit Diseases
An Online Guide to Plant Disease Control. Oregon State University
Plant Viruses Online -- Descriptions and Lists from the VIDE Database. Virus Identification Data Exchange
The University of California Statewide Integrated Pest Management Project. University of California, Davis

Orchard Horticulture
About Chilling Units
Conservation, Evaluation, Exploitation and Collection of Minor Fruit Tree Species: Horticulture Department of the University of Florence, Italy
Factors Affecting Fruit Tree Production
Fall Care of Fruit Trees: Dont's and Do's
Fruit Trees for the Home Grounds
Fruit Trees In The Home Yard: chapter 11 of Arizona Master Gardener Manual
Growing Temperate Tree Fruit and Nut Crops in the Home Garden and Landscape
(PDF)
Pruning Fruit Trees: (pdf) from Nebraska Cooperative Extension
Small-Scale Fruit Production: a comprehensive guide by Penn State University
Training & Pruning Fruit Trees: North Carolina State University. Cooperative Extension Service.

Mulberries
Morus alba L.
Mulberry Fruit Facts: descriptions of the three most common species of Mulberry (Morus spp.) in North America. It is a portion of Fruit Facts a series of publications containing information on individual fruits, including botanical identification, plant description and culture notes, and characteristics of cultivars. It is produced by California Rare Fruit Growers.
Popcorn Disease of Mulberry: Produced by Oregon State University

Peaches
Peach 2003 Pest Management Guide for the Willamette Valley
Peaches and Nectarines
Peaches and Nectarines for Florida
Sample Costs to establish a Peach/Nectarine Orchard and Produce Peaches/Nectarines in 2000 (pdf)
Stone Fruit Insects: Briefly discusses damage, treatment and cultural practices of Peach Tree Borer (Synanthedon exitiosa), Green Peach Aphid (Myzus persicae) and Mealy Plum Aphid (Hyalopterus arundinis), Cherry Curculio (Tachypterellus consors ssp. cerasi), Plum Gouger (Anthonomus scutellaris), Western Cherry Fruit Fly (Rhagoletis cingulata), Western Cherry Fruit Fly (Rhagoletis cingulata), Peach Twig Borer(Anarsis lineatella), Pear Slug or Pear Sawfly (Caliroa cerasi), Shothole Borer (Scolytus rugulosus). by W.S. Cranshaw and R.J. Zimmerman of Colorado State University Cooperative Extension.
Training and Pruning Commercial Peach Orchards (pdf)

Pears
Growing Pears in Florida
Oregon-Washington-California Pear Bureau. Winter Pear Control Committee
Pear 2003 Pest Management Guide for the Willamette Valley
Pear IPM Project: of the Washington State Horticultural Association
The Pears of New York (JPEG images of the color plates) by U.P. Hedrick and published by the New York Agricultural Experiment Station in 1921
Pears: Reports and Publications: FASonline, Horticultural & Tropical Products Division.
Pollination and Commercial Varieties of Pears in Oregon
Principles of Fire Blight Control In the Pacific Northwest USA
Sprinkler Rot of Pear
Tree Fruit for the Backyard
USA Pears: Pear Bureau Northwest

Plums
Prune and Plum Pest Management Guide for the Willamette Valley
Black Knot of Plums and Cherries (pdf)
Plum Shothole Borer (Scolytus rugulosus): Univeristy of California's Pest Management Guidelines. This document includes a description of the pest, the damage it causes, methods of cultural control.
Stone Fruit Insects: Briefly discusses damage, treatment and cultural practices of Peach Tree Borer (Synanthedon exitiosa), Green Peach Aphid (Myzus persicae) and Mealy Plum Aphid (Hyalopterus arundinis), Cherry Curculio (Tachypterellus consors ssp. cerasi), Plum Gouger (Anthonomus scutellaris), Western Cherry Fruit Fly (Rhagoletis cingulata), Western Cherry Fruit Fly (Rhagoletis cingulata), Peach Twig Borer(Anarsis lineatella), Pear Slug or Pear Sawfly (Caliroa cerasi), Shothole Borer (Scolytus rugulosus). by W.S. Cranshaw and R.J. Zimmerman of Colorado State University Cooperative Extension.
Tree Fruits for the Backyard: Plums

Prunes
Growing Prunes (pdf)

Publications: Journals and Conference Proceedings

Tree Fruit Related Associations

Tree Fruit Research Stations

Tree Fruit Web Directories