September-October 1993

Cover: The insect pathogen Bacillus thuringiensis proved effective in controlling peach twig borer on almonds, peaches and nectarines, offering a possible alternative to dormant organophosphates. Watne Johnson, staff research associate at UC Davis, is shown spraying Bt in a Colusa County almond orchard. Photo by Jack Kelly Clark

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California Agriculture, September-October 1993

Volume 47, Number 5
Bt's at bloom may replace dormant sprays

peer-reviewed research articles

Insect pathogen “Bt” controls peach twig borer on fruits and almonds
by William W. Barnett , John P. Edstrom , Richard L. Coviello , Frank P. Zalom
pp4-6, doi#10.3733/ca.v047n05p4
Summary | Expanded Abstract | HTML w/Links | PDF

Why lacewings may fail to suppress aphids … Predators that eat other predators disrupt cotton aphid control
by Jay A. Rosenheim , Lawrence R. Wilhoit
pp7-9, doi#10.3733/ca.v047n05p7
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Polymers check furrow erosion, help river life
by Hal McCutchan , Phil Osterli , John Letey
pp10-11, doi#10.3733/ca.v047n05p10
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In lettuce production, winter cover crops can decrease soil nitrate, leaching potential
by Louise E. Jackson , Lisa J. Wyland , Jill A. Klein , Richard F. Smith , William E. Chaney , Steven T. Koike
pp12-15, doi#10.3733/ca.v047n05p12
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Adjusting sprinkler angle reduces spread of disease in pistachio
by Themis J. Michailides , David P. Morgan , William H. Olson , Joseph A. Grant
pp16-20, doi#10.3733/ca.v047n05p16
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Crow damage to almonds increasing; no foolproof solution in sight
by Janine Hasey , Terrell P. Salmon
pp21-22, doi#10.3733/ca.v047n05p21
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Berber orchardgrass tested as cover crop in commercial vineyard
by James A. Wolpert , Phil A. Phillips , R. K. Striegler , Michael V. McKenry , John H. Foott
pp23-25, doi#10.3733/ca.v047n05p23
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Shredding “mummy” walnuts is key to destroying navel orangeworm in winter
by G. Steven Sibbett , Robert A. Van Steenwyk
pp26-28, doi#10.3733/ca.v047n05p26
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Domestic, world market growing … Grape juice concentrate emerging as a sweetener in juices, food products
by Dale Heien , Ray Venner
pp28-31, doi#10.3733/ca.v047n05p28
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editorial, news, letters & science briefs

EDITORIAL: Public land management: New mandate for the land grant university?
by Henry Vaux
pp2, doi#10.3733/ca.v047n05p2
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