- Author: Jeannette E. Warnert
The glorious fall colors in California wine country aren't good news for the industry. Although they look beautiful in the muted autumn sunlight, red leaves on grapevines can be a symptom of serious plant diseases, such as grape leafroll associated viruses and red blotch.
In 2008, a disease characterized by red blotches along leaf margins and red veins under the leaf surfaces was seen in red grapes growing in Napa Valley. The symptoms resembled leafroll disease, however laboratory tests did not detect any leafroll and rugose wood viruses in the samples. Since then, red blotch disease has been observed in vineyards throughout North America.
The infected grapevines may produce clusters with reduced sugar content, causing...
- Author: Ann Brody Guy
- Adapted from an article by: Sarah Yang
The competition between farmers and fish for precious water in California is intensifying in wine country, say biologists at the University of California, Berkeley.
A recently published study links higher death rates for threatened juvenile steelhead trout with low water levels in the summer and the amount of vineyard acreage upstream. Like salmon, steelhead trout migrate from freshwater streams to the ocean before returning to their birthplace to spawn. Steelhead trout in Southern California and the upper Columbia River are endangered, and several other populations, including those in Northern California, are...
- Author: Ann King Filmer
A new winery, brewery and food-processing complex at the University of California, Davis, is the most environmentally sophisticated complex of its kind in the world, one that promises to unravel scientific enigmas and solve practical problems related to foods, beverages and health.
The $20 million, 34,000-square-foot teaching-and-research complex is the first winery, brewery or food-processing facility expected to earn LEED Platinum certification, the highest environmental rating awarded by the U.S. Green Building Council. It is intended to become self-sustainable in energy and water use.
Neal Van Alfen, dean of the College of Agricultural and Environmental Sciences at UC Davis, said, "It will serve as a model for...