- Author: Janet Hartin, UC Cooperative Extension Environmental Horticulture Advisor
Did you ever wonder why trees "turn" color in the fall? The short answer: It's primarily a function of long, cool fall nights and short, sunny days.
The longer answer? Chlorophyll is responsible for the basic green color of leaves we see in spring and summer and is a necessary component of photosynthesis, which uses sunlight to manufacture sugar (food) that is stored during the dormant period of the year. Carotenoids produce yellow, orange and even brown pigments in crops such as carrots, squash, bananas and many ornamental plants such as daffodils and poppies. Anthocyanins are red and orange in color and are most linked to lavish displays of brilliant fall foliage. They also...
- Author: Saoimanu Sope
Earlier this year, officials in Southern California declared a water shortage emergency resulting in restrictions such as limiting outdoor water use to one day of the week. While mandatory restrictions vary across the region, Amir Haghverdi, UC Cooperative Extension specialist and associate professor of agricultural and urban water management at UC Riverside, is using research to pinpoint irrigation strategies that will help communities reduce their demand for water and increase supply.
Haghverdi and his team are responding to a hotter and drier California by working to identify changes that can make a substantial difference in water savings.
While...
- Author: Mike Hsu
Despite recent rains, fire remains a danger across California, as there's still plenty of time this fall for grass, woody debris and other flammable material to become dry and ignite.
“The smaller the fuels – pine needles, grass, and small twigs – the faster they can dry out, meaning they will be ready to burn again a few days or weeks after a large rainstorm,” said Susie Kocher, a UC Cooperative Extension forestry and natural resources advisor for the Central Sierra, urging residents to take steps to prevent or limit potential fire damage.
When it comes to “home hardening”...
- Author: Pamela Kan-Rice
Karrie Reid didn't plan to become a scientist, but she fell in love with plants. Reid joined UC Agriculture and Natural Resources as the UC Cooperative Extension environmental horticulture advisor for San Joaquin County in 2010, with funding from the county's Public Works Solid Waste Division. She plans to retire Sept. 30.
Reid, who was born in Jackson in Amador County, earned her bachelor's degree in biology from UC Santa Cruz and her master's degree in horticulture and agronomy from UC Davis. She has written nearly 100 articles on – and trained hundreds of people in – sustainable urban landscape management.
“I wasn't much interested in biology...
- Author: Mike Hsu
Climate change, extreme drought, intense wildfires and the COVID-19 pandemic can all be linked to humanity's troubled relationship with the natural world.
For more than a decade, healing and deepening connections between people and the environment have been pillars of the UC California Naturalist Program. Partnering with over 80 organizations across the state, the program – a part of University of California Agriculture and Natural Resources – has trained over 6,500 participants and certified more than 5,350 volunteers who engage fellow community members in advancing environmental stewardship and climate...