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


Hot weather tips for the summer garden

Mulch is a beautiful compliment to your landscape – not only is it aesthetic but it provides a valuable service to your soil.

This week much of California is under a heat advisory or excessive heat warning, with high temperatures estimated to range from 90 to 108 degrees. Many home gardeners are wondering how they can help their plants, trees or shrubs survive the intense...

Posted on Monday, July 30, 2018 at 9:05 AM
Focus Area Tags: Yard & Garden

A More Water Efficient Avocado?

avocado fruit

Here's a pretty technical report of water efficiency in avocado - the amount of water it takes to make fruit.  It looks like there might be some varieties that could produce more fruit with less water. It's a promising start to selecting a tree that...

Posted on Wednesday, June 20, 2018 at 6:24 AM

Microbes associated with plant roots could be a key to helping plants survive drought

Sorghum growing in research plots at the UC Kearney Agricultural Research and Extension Center. (Photo: Peggy Lemaux)

As sorghum plants cope with drought conditions, the plants' roots and adjoining microbial communities are communicating in a chemical language that appears to improve the plants' chances under water stress. “It's amazing,” said Peggy Lemaux,...

Posted on Wednesday, April 25, 2018 at 8:44 AM
Focus Area Tags: Agriculture

Monthly news round up: February 2018

In video game Foldit's Aflatoxin Challenge, players try to fold a protein into a shape that will break down the aflatoxin molecule into something harmless.

Scientists' Newest Tool To Fight Agricultural Toxin: A Video Game (KVPR) Kerry Klein, Feb. 28 It wasn't long after the invention of the internet that scientists discovered the potential for using computing power as a citizen science tool. One of the...

Posted on Wednesday, February 28, 2018 at 10:19 PM

Another Victim of Drought Stress

citrus leaf claering 1

So, this image comes across with the question of what is going on. It's a grapefruit, but what is going on with the leaves? It's happening to two grapefruit side by side or two different ages. It's not affecting other citrus nearby, and not a grapefruit...

Posted on Wednesday, February 28, 2018 at 5:34 AM

What Damaged the Citrus this Winter? Frost? Herbicide?

citrus dieback 2

Something hit the citrus trees of Riverside in late December 2017. Some vandal spraying herbicide? It was too widespread. It was all over town, orchards and backyards. It was on the north and east sides of trees. It didn't happen in Ventura or Santa...

Posted on Thursday, February 22, 2018 at 5:17 AM

'Never ending' drought news from UC ANR

As blossoms begin to pop on Central California fruit and nut trees, farmers are worried about the low levels of rainfall seen in the state so far this winter.

Warm and sunny winter days are no cause for celebration among the farmers, ranchers and forest managers who rely on UC Agriculture and Natural Resources' research-based information and expertise to make their work more profitable. Such is the feeling...

Posted on Wednesday, February 7, 2018 at 3:43 PM
Focus Area Tags: Agriculture

Champions of the Forests Researchers receive $2.5 million to study the effects of climate and climate change on trees along river channels

Reprinted from the UC Santa Barbara Current The dry Santa Clara River means that water needs are met by using subsurface groundwater. Photo Credit: JOHN...

Posted on Tuesday, January 30, 2018 at 4:26 PM
  • Author: Julie Singer

Soil Moisture Sensor Selection is Confusing


So, every few weeks the question comes up of whether to install soil moisture meters which leads to the question of which to buy and install or have installed.  And then come the questions of what do the readings mean and why aren't the readings...

Earthworms, Soil Productivity, Citrus and Avocado


There are 4,000 species of earthworms grouped into five families and distributed all over the world. Some grow uo to 3 feet long, while others are only a few tenths of inches. We call them nightcrawlers, field worms, manure worms, red worms and some...

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