New Insight Into Why Pierce’s Disease is So Deadly to Grapevines: Research could help diagnose disease early and increase plant health

Scientists are gaining a better understanding of Pierce’s disease and how it affects grapevines. The disease, which annually costs California more than $100 million, comes from a bacterium called Xylella fastidiosa. While the bacterium has been present in the state for more than 100 years, Pierce’s disease became a more serious threat to agriculture with…

Continue reading →

Invitation for Landscape Horticulture Academics and Professionals: The 2018 UC Landscape Plant Irrigation Trials

UC Landscape Plant Irrigation Trials evaluate plant material to identify low water-use plants for California. UC’s Landscape Plant Irrigation Trials invites members of the professional landscape, nursery, and horticultural industries to the Spring 2018 Open House Ratings Day. All new landscape plants undergo evaluation in plant trials before being introduced to the market. At the…

Continue reading →

Native Wildflowers Bank on Seeds Underground to Endure Drought

Exotic Grasses Depleted Seed Bank Accounts During Drought While Natives Were Saved Quick Summary Native wildflowers saved a lot of seeds during California’s drought — 201 percent more than usual Exotic grasses decreased their seed bank by 52 percent during the drought Drought-tolerant wildflowers enjoyed the greatest increases Effects of a prolonged drought remain unknown,…

Continue reading →

How Much Water Do Landscape Plants Need?

To meet California’s mandatory landscape ordinances for water conservation, Loren Oki, Karrie Reid, and Jared Sisneroz are conducting UC Landscape Plant Irrigation Trials to determine water needs for landscape plants. The goal is to develop water conservation landscapes in three locations and study their long-term performance. Regulations for landscape water use California’s Model Water Efficiency…

Continue reading →

Water Conservation: The New ‘Normal’ – Drought Irrigation Strategies

Since water conservation will be an ongoing practice in California, University of California scientists are continually developing practical information for agriculture, rangelands, urban landscapes, and animal production. This series of publications was produced by UC experts throughout California. Published by UC ANR, authors include professors and Cooperative Extension specialists in the Dept. of Plant Sciences…

Continue reading →

How Much Drought Can a Forest Take? Aerial Tree Mortality Surveys Show Patterns of Tree Death During Extreme Drought

Quick Summary Trees in the driest, densest forests are most vulnerable to dying in extreme drought Effects of extreme drought on forests can take years to surface High tree mortality rates likely to continue as drought effects linger Why do some trees die in a drought and others don’t? And how can we predict where…

Continue reading →