July-Sept 2004 California Agriculture Table of Contents

July-Sept 2004 California Agriculture Table of Contents

COVER: Almost all of California's surface water passes through the state's 57 million acres of rangeland. Ranch water-quality plans are aimed at limiting levels of sediment, pathogens, heat build-up and nutrients in streams. Careful management, informed by state-of-the-art science, can minimize nonpoint source pollution attributed to cattle grazing.
Stock Image from Corbis.

Issue date: July-Sept. 2004

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News

Editorial

Water quality is key to state's prosperity

Letters
High-quality social analysis

Science briefs
Sudden oak death genome mapped
No safe place to sit in
tick-infested forests
West Nile virus spreads

Outreach news
Courses help ranchers, farmers mitigate water-quality impacts
Dairy workers learn husbandry, management skills
Preventing Johne's disease is good all-around dairy practice

Table of Contents: July-Sept 2004

Research and reviews

Cattle grazing has varying impacts on stream-channel erosion in oak woodlands
George et al.
Channel erosion did not increase when heavy grazing increased bare ground along stream channels.
NEWS RELEASE | ABSTRACT | FULL TEXT PDF

Long-term grazing study in spring-fed wetlands reveals management tradeoffs
Allen-Diaz et al.
Light grazing maintained plant diversity, lowered insect populations and decreased methane levels, indicating complex management tradeoffs.
NEWS RELEASE | ABSTRACT | FULL TEXT PDF

Transparency tube provides
reliable water-quality measurements
Dahlgren, Van Nieuwenhuyse, Litton
A simple, inexpensive and accurate test
can be performed to monitor streams for water clarity and to estimate suspended solids concentrations.
NEWS RELEASE | ABSTRACT | FULL TEXT PDF

Aerial application of clopyralid demonstrates little drift potential and low toxicity to toads
DiTomaso et al.
The herbicide clopyralid is an important tool to control yellow starthistle; with
proper buffer zones, spraying by air poses low risk to aquatic resources.
NEWS RELEASE | ABSTRACT | FULL TEXT PDF

Alternative techniques improve irrigation and nutrient management on dairies
Schwankl, Frate
Furrow torpedoes, surge irrigation and shorter furrow lengths can reduce irrigation water needs; delayed addition of manure water helps protect groundwater.
NEWS RELEASE | ABSTRACT | FULL TEXT PDF

Accuracy of cotton-planting forecasts assessed in the San Joaquin Valley
Munier, Goodell, Strand
When compared to actual weather conditions for 5 years, UCCE's 5-day degree-day forecast was a reliable tool for growers making planting decisions.
NEWS RELEASE | ABSTRACT | FULL TEXT PDF

California handlers describe marketing issues for organic kiwifruit
Carman, Klonsky
Organic kiwifruit production will increase, while the price gap with conventional product decreases; organic consumers are becoming more discriminating.
NEWS RELEASE | ABSTRACT | FULL TEXT PDF

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