Algal-bacterial treatment facility removes selenium from drainage water
AuthorsNigel W.T. Quinn
Tryg J. Lundquist
F. Bailey Green
Max A. Zárate
William J. Oswald
Authors AffiliationsN.W.T. Quinn is Geological Scientist and Water Resources Engineer, Lawrence Berkeley National Laboratory; T.J. Lundquist is Assistant Specialist, Applied Algae Research Laboratory, UC Berkeley; T.J. Lundquist is Assistant Specialist, Applied Algae Research Laboratory, UC Berkeley; F.B. Green is Assistant Research Engineer, Applied Algae Research Laboratory, UC Berkeley; M.A. Zdrate is Graduate Student, Applied Algae Research Laboratory, UC Berkeley; W.J. Oswald is Project Principal Investigator and Emeritus Professor of Civil and Environmental Engineering, and T. Leighton is Professor of Microbiology, UC Berkeley.
Hilgardia 54(6):50-56. DOI:10.3733/ca.v054n06p50. November 2000.
Growers and pesticide applicators in California are legally required to file pesticide use reports with details about every application to commercial crops. We used the individual applicator records to document a decline in the use of organophosphate pesticides (OP) on almond and stone fruit orchards during the rainy season in California, a time period in which the trees are dormant. The decline is important because dormant applications are a major source of surface water contamination and the Federal Clean Water Act mandates a reduction in movement of OPs into surface water. However, the decline in use of OPs has been accompanied by an increase in use of pyrethroid pesticides, particularly in stone fruit orchards. Additional implementation of “reduced-risk” integrated pest management practices could further reduce use of dormant applications of OPs and pyrethroids on almonds and stone fruit orchards.
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Also in this issue:Methodology for indole-3-acetic acid: Sample preparation, extraction, and purification techniques
Building the IPM continuum
UC IPM: 20 years of progress
IPM leads overhaul of PCA licensing exams
Training helps reduce pesticide risks
UC scientists apply IPM techniques to new eucalyptus pests
Almond and stone fruit growers reduce OP, increase pyrethroid use in dormant sprays
IPM research profiled: 10-year trends
Mass releases of wasps can reduce damage from codling moth
Cotton aphid emerges as major pest in SJV cotton
Integrated strategies offer site-specific control of yellow starthistle
Interplanting grasses into alfalfa controls weeds in older stands
Solarization and biofumigation help disinfest soil
Analysis shows climate-caused decreases in Scott River fall flows
Nutrition lessons improve Hispanic teenage girls' knowledge
Tuolumne County shops capture local dollars
Grading error reduces grower incentives to increase prune quality