Ongoing research

UC 4-H Program of Calaveras County: Page

Copper Hills 4-H Club

The Copper Hills 4-H Club serves Copperopolis and the outlying areas. Meets the 1st Tuesday of the month at 7:00 p.m. in Copperopolis. No meeting in June, July, and August. - UNCONFIRMED FOR 2025-2026
View Page
Page

Walnut Propagation

Walnut Propagation | Rootstock & Scion Selection | Cultivar Table | Orchard Establishment | Flower, Fruit & Cultivar Photo Gallery | Deficiencies & Pests | Harvesting & Processing | Reviewers & Credits | References & Links Many different types of propagation are used in the walnut nursery industry t...
View Page
Page

Walnut References & Links

Walnut Propagation | Rootstock & Scion Selection | Cultivar Table | Orchard Establishment | Flower, Fruit & Cultivar Photo Gallery | Deficiencies & Pests | Harvesting & Processing | Reviewers & Credits | References & Links Additional Resources Fruit and Nut Information - Walnut: (a listing of useful...
View Page
Page

Walnut Rootstock & Scion Selection

Walnut Propagation | Rootstock & Scion Selection | Cultivar Table | Orchard Establishment | Flower, Fruit & Cultivar Photo Gallery | Deficiencies & Pests | Harvesting & Processing | Reviewers & Credits | References & Links Rootstock selection Rootstocks are bred to grow in different soil types and c...
View Page
Page

Walnut Deficiencies & Pests

Walnut Propagation | Rootstock & Scion Selection | Cultivar Table | Orchard Establishment | Flower, Fruit & Cultivar Photo Gallery | Deficiencies & Pests | Harvesting & Processing | Reviewers & Credits | References & Links UC Statewide IPM Program: How to Manage Pests: Walnut Includes Year-round IPM...
View Page
Page

Walnut Diseases

Walnuts in California > Deficiencies & Pests > Diseases Plant diseases may be caused by fungal, bacterial, or viral pathogens. They are transmitted from plant to plant by wind, water, soil, or insect vectors, often entering into the plant by way of natural openings or wounds.
View Page
Page

Walnut Insect, Mite & Nematode Pests

Walnuts in California > Deficiencies & Pests > Insect, Mite & Nematode Pests The prevalence of insect, mite and nematode pests varies from orchard to orchard and is influenced by geographic location, weather and orchard management practices.
View Page
Page

Vertebrate Pests

Use back button to return to previous page Vertebrate Pests of Orchard Crops Photo Gallery These photos of some of the major pests are viewed courtesy of University of California research and extension personnel and programs, including the UC Statewide IPM Program.
View Page