All Issues
Testing times: The impact of mad cow disease
Cover:
This colored transmission electron micrograph (TEM) reveals prion fibrils in the brain of a cow infected with BSE (bovine spongiform encephalopathy) or mad cow disease. The elongated orange fibrils are believed to be aggregations of the abnormal prion protein, which is the disease agent. Although it has only been confirmed in two U.S. cows, BSE has caused policy and regulatory ripple effects involving producers, processors and consumers both here and abroad.
Photo: EM Unit, Veterinary Laboratories Agency/Science Photo Library
Collecting useful data streams to restore cold-water fisheries
Cover:
Monitoring of stream temperature and related factors is critical for protecting and restoring populations of salmonids and the other native fish that require cold-water and reproduce (see pages 149,153, 161). Likewise, the monitoring of flows into and out of irrigated pasture can help to mitigate environmental impacts (see page 168). Data collected at Lassen Creek (shown), in north-eastern Modoc County, demonstrates how shade from thick vegetative cover helps to maintain cool stream temperatures... Photo by Kenneth W. Tate .
Kearney at 40: Research blooms in the Valley
Cover:
Orchard-systems research conducted at KREC on peaches (shown in bloom) and other tree fruits has reduced labor costs and improved grower profitability (see pages 75, 80)... Cover and table of contents photos by Jack Kelly Clark
Beyond organophosphates
Cover:
Under the Food Quality Protection Act of 1996, many uses of organophosphate insecticides and other broad-spectrum pesticides are being phased out, with important implications for California growers; UC scientists are exploring a range of alternatives. Shown on this home gardener’s shelf are generations of pesticides, some of which have been banned or their uses curtailed.
Photo: Galen Rowell/Corbis
October-December 2005
Volume 59, Number 4
Volume 59, Number 4