UC Cooperative Extension is hosting a sudden oak death bioblitz April 25-28 in Northern California, in which a corps of volunteers will fan out across the wildland areas to track the progression of the devastating disease, reported Derek Moore in the Santa Rosa Press Democrat.
Sudden oak death is caused by the pathogen Phytophthora ramorum, which was inadvertently introduced to California forests on nursery stock in the 1990s. The disease has killed up to 50 million trees (primarily tanoak, coast live oak, California black oak, Shreve's oak and canyon live oak) from Big Sur to southwest Oregon.
The city of Riverside is taking steps to protect a 143-year-old Washington Navel orange tree - the tree that parented most navel oranges alive today, reported the Riverside Press-Enterprise.
According to legend, the seedless and sweet Washington navel was an accidental mutant that appeared on the grounds of a Brazil monastery in the early 1800s. Tree clones were sent to USDA in Washington, D.C., and from there acquired by Eliza Tibbets, who tended the trees at her home in Riverside.
This month, city workers removed two trees that were planted near the iconic navel orange - a Marsh Grapefruit and another...
A common springtime nuisance, whitefly populations have escalated this year in California Central Coast areas, reported Megan Healy on KSBY Channel 6 in San Luis Obispo.
People are mistaking them for clouds of pollen or ash; some leaves look like they're coated with a thin layer of new-fallen snow.
The reporter spoke to Cathryn Howarth, a UC Cooperative Extension Master Gardener in San Luis Obispo County. She said the office has received dozens of calls from residents wondering why the whiteflies are so...
In the California agriculture industry, the climate change discussion is less about whether disruption is coming than it is about how farmers will adapt, reported John Cox in the Bakersfield Californian.
Cox spoke to a Delano farmer who doesn't like debating climate change, but he has thought a lot about how to deal with it.
"As a grower, you just take it as it comes," he said.
Farmers may not agree with new regulations intended to reduce greenhouse-gas emissions seen as accelerating climate change, but they share an interest in preparing for the changes ahead, the article said.
"Everybody I know in...
- Author: Pamela Kan-Rice
New Series of Nitrogen Management Advice Available
(Cal Ag Today) March 28
California growers can download a new series of publications summarizing efficient nitrogen management practices from UC Agriculture and Natural Resources. The publications are designed to assist growers in complying with state regulations for tracking and reporting nitrogen fertilizer applied to crops, in an effort to prevent nitrogen from leaching into groundwater.
UC helps growers comply with new...