Division of Agriculture and Natural Resources
Division of Agriculture and Natural Resources
Division of Agriculture and Natural Resources
University of California
Division of Agriculture and Natural Resources

Drought

How much drought can a forest take?

Aerial Tree Mortality Surveys Show Patterns of Tree Death During Extreme Drought Dead trees in the Sierra National Forest in April 2016. Credit: USFS Region 5   Quick Summary Trees in the driest, densest...

Posted on Friday, January 20, 2017 at 12:19 PM
  • Author: Kat Kerlin

Research Spotlight: Foothills irrigation creates wetlands and sustains them in drought, benefitting birds

An unintentional wetland created by irrigation runoff at SFREC (left) and an intentionally created irrigated wetland on Spenceville SWA (right).

After five years, the northern Sierra Nevadas have finally been moved out of the “severe drought” category by the US Drought monitor following a promisingly rainy start to the 2017 water year. This is not only good news for our agricultural...

Posted on Tuesday, January 10, 2017 at 10:42 AM
  • Author: Nathan Van Schmidt

Rain and snow bring hope to California farmers

Research land under a stormy sky at the UC Kearney Agricultural Research and Extension Center Jan. 5, 2017.

California's years-long drought is easing up, with storms delivering rain and snow that has exceeded "normal" for the state, reported Jed Kim for the Marketplace Sustainability Desk. Kim interviewed Dan Sumner, the director of the UC Agricultural Issues...

Posted on Thursday, January 5, 2017 at 9:43 AM

California may be emerging from the grip of drought

A stormy vineyard captured by California Winegrape Growers on Twitter, @CAWG_GROWERS.

The California rainy season is off to a good start, raising hopes that the ongoing drought will be snapped, reported Aaron Davis in the East Bay Times. "We've seen a sigh of relief from a lot of growers that are right at about half of their total...

Posted on Wednesday, December 21, 2016 at 11:34 AM

Watch Out for Those Rodents - They are After Your Trees

avocado rodent damage 2

redcThe hills have been dry for a long time, and the long dry fall is bringing animals into the avocado groves that normally stay out in the hills. They want the green cambium of trees and the moisture it provides. And especially rodents will have a...

Posted on Friday, December 2, 2016 at 3:58 PM

Researcher Spotlight: Managing Rangelands for the Bad Times as Well as the Good

Figure 2. Total cover and biomass responses to rainfall and grazing legacy over three years (± SE). Dark squares indicate a legacy of moderate grazing – which created a diverse mix of grass and forb species - and light circles indicate a legacy of low grazing – which shifted the community to only dominant grasses.

Over the last few years Californians have grappled with how to manage lands during times of both drought and plentiful rainfall. At SFREC and on Central Valley rangelands, one question is whether management that promotes high forage in wet years alters...

Posted on Tuesday, November 8, 2016 at 8:23 AM
  • Author: Lauren Hallett
  • Author: Katharine Suding

Coping with Drought on California Rangelands Publication

Announcement reprinted from California Wool Growers' Association newsletter. I was part of the team and it reflects input from Mendocino and Lake County ranchers as well as the rest of the state.   California has experienced five large-scale,...

Posted on Friday, September 16, 2016 at 2:59 PM

California's native fish in steady decline for 50 years

Ted Grantham

California's fresh water fish are in trouble, and not just because of the drought, reported Lori Pottinger in the Viewpoints blog published by the Public Policy Institute of California. Pottinger asked Ted Grantham, UC Cooperative...

Posted on Friday, September 2, 2016 at 11:50 AM

Insecticides May Not Work as Well During the Drought and Other Climate Changes

Spraying of agricultural field in western Australia. (Photo by Christian Nansen)

DAVIS--Systemic insecticides that target insect pests, including potato beetles and diamondback moths, may not work as well during the drought and other climate changes, warns UC Davis agricultural entomologist Christian Nansen. “Weather patterns...

It's NOT Disease, it's Water

clothesline effect

A call from a small grower, surprised at the sudden decline of the avocado trees. It must be a disease was the grower's thought. Well driving up to the site, there were numerous trees with canopies indicating drought stress. In fact most of the trees...

Posted on Friday, August 19, 2016 at 6:45 AM
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