September-October 2001

Cover: Long before California's current energy crunch, UC scientists were working with growers and food processors to devise new ways for reducing energy usage in agriculture. At UC Davis, a methane generator called the APS-Digester is under construction that can digest multiple batches of animal manure and plant waste, a significant advance over the old "single-batch" systems; the resulting biogas can be used to produce energy. David R. Bartell welds one of APS-Digester's tanks. Photo by John Stumbos.

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California Agriculture, September-October 2001

Volume 55, Number 5
Powering agriculture: UC builds energy alternatives

peer-reviewed research articles

BIOS and conventional almond orchard management compared
by Walt J. Bentley , Lonnie Hendricks , Roger Duncan , Cressida Silvers , Lee Martin , Marcia Gibbs , Max Stevenson
pp12-19, doi#10.3733/ca.v055n05p12
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Armored scale insecticide resistance challenges San Joaquin Valley citrus growers
by Elizabeth Grafton-Cardwell , Yuling Ouyang , Rebecka Striggow , Stacy Vehrs
pp20-25, doi#10.3733/ca.v055n05p20
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Managing manure and conserving predators helps control flies in caged-layer poultry systems
by Bradley A. Mullens , Nancy C. Hinkle , Coralie E. Szijj , Douglas R. Kuney
pp26-30, doi#10.3733/ca.v055n05p26
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Host-specific strain of Stemphylium causes leaf spot disease of California spinach
by Steven T. Koike , Diana M. Henderson , Edward E. Butler
pp31-34, doi#10.3733/ca.v055n05p31
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Rust disease continues to threaten California garlic crop
by Steven T. Koike , Richard F. Smith , R. Michael Davis , J. Joe Nunez , Ron E. Voss
pp35-39, doi#10.3733/ca.v055n05p35
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Interpersonal communication tops concerns of farm supervisors
by Gregory Encina Billikopf
pp40-43, doi#10.3733/ca.v055n05p40
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One-pass tillage equipment outstrips conventional tillage method
by Shrinivasa K. Upadhyaya , Kleber P. Lancas , Abilio G. Santos-Filho , Narendra S. Raghuwanshi
pp44-47, doi#10.3733/ca.v055n05p44
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editorial, news, letters & science briefs

EDITORIAL: Research and extension reduce impact of California energy crunch
by Michael S. Reid , James F. Thompson
pp2, doi#10.3733/ca.v055n05p2
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Genetically engineered tomato grows in salty water
Editors
pp4, doi#10.3733/ca.v055n05p4
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Study reveals risk factors for teen suicide
by Janet White
pp5, doi#10.3733/ca.v055n05p5
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UC scientists help growers cope with energy crunch
by Robin Meadows
pp6-7, doi#10.3733/ca.v055n05p6
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Methane generators turn agricultural waste into energy
by John Stumbos
pp8-9, doi#10.3733/ca.v055n05p8
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BIFS reports potential for chemical reductions in crops and dairy
by Janet Byron , Lyra Halprin
pp10-11, doi#10.3733/ca.v055n05p10
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