Ongoing research

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tensiometer2
Topics in Subtropics: Article

Soil Moisture Measuring Devices

July 1, 2015
By Ben A Faber
Irrigation timing can be determined more precisely using a tensiometer. These water-filled tubes with a pressure gauge accurately reflect the amount of energy a plant needs to extract water from the soil. The pressure gauge measures tension values in centibar units (cbars).
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A Western tiger swallowtail, Papilio rutulus, lands on a butterfly bush. Note the stink bug on top. (Photo by Kathy Keatley Garvey)
Bug Squad: Article

The Butterfly and the Stink Bug

June 30, 2015
By Kathy Keatley Garvey
It's sort of like "The Beauty and the Beast." Or "The Pollinator and the Pest." A gorgeous Western Tiger swallowtail (Papilio rutulus), seeking nectar from a butterfly bush, touched down and began to feed. It didn't take long for the butterfly to spot a stink bug crawling on top of the blossom.
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marin gardens
IGIS: Article

Mapping Community Gardens in Marin County

June 30, 2015
By Shane T Feirer
In the past year IGIS worked with the staff from the UCCE Marin County to develop a new web mapping application that will display current community garden sites in Marin County. This application was developed with ease of use and ease of updating in mind.
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ACPMap
IGIS: Article

Tracking the Asian Citrus Psyllid

June 30, 2015
By Robert Johnson
Over the past several years, the Asian citrus psyllid (ACP), a serious invasive pest, has established a population in California and presents a major threat to the California citrus industry.
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IGIS: Article

Simple OCR with Google Drive

June 30, 2015
By Robert Johnson
Over the last several months, IGIS has been working to collect, digitize and spatially reference historical project data from the RECs. Recently, we were given some very detailed data for projects at the Hopland REC dating back to 1952.
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Water mites on a damselfly. (Photo by Greg Kareofelas, taken with a Canon Elph)
Bug Squad: Article

Mighty Mites!

June 29, 2015
By Kathy Keatley Garvey
If you've ever been "up close and personal" to a damselfly, you might have seen the water mites. Naturalist Greg Karofelas of Davis, an associate of the Bohart Museum of Entomology, has not only seen them, he has photographed them. See his truly spectacular photo below.
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UC Weed Science (weed control, management, ecology, and minutia): Article

Life after weed science

June 29, 2015
By Gale Perez
From the Davis Enterprise | June 26, 2015 Photojournalist Clyde Elmore will host a photographic exhibit from Monday, July 6, through Aug. 28 at the Buehler Alumni Center, off Mrak Hall Drive on the UC Davis campus. This will be the seventh annual exhibit of wildlife and landscape images.
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Avocado leaf blight
Topics in Subtropics: Article

Avocados and Water

June 29, 2015
By Ben A Faber
Avocados and Water Avocados are the most salt and drought sensitive of our fruit tree crops. They are shallow rooted and are not able to exploit large volumes of soil and therefore are not capable of fully using stored rainfall.
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