California Agriculture, January-February 1983

Volume 37, Number 1

peer-reviewed research articles

Degree-days: An aid in crop and pest management
by Lloyd T. Wilson , William W. Barnett
pp4-7, doi#10.3733/ca.v037n01p4
Abstract
Not available – first paragraph follows: Questions such as when to plant, whether the crop is developing on time, and when to initiate pest control actions are particularly difficult to answer, because the timing is not always the same each year. Growth and development of insects and plants can vary as much as two to three weeks from the “normal” time, depending on whether temperatures are above or below the average. In this article we compare different techniques for predicting temperature-related insect population and crop development.
Expanded Abstract | PDF

Weedy species of rice show promise for disease resistance
by J. Neil Rutger , Robert K. Webster , Richard A. Figoni
pp7-9, doi#10.3733/ca.v037n01p7
Abstract
Breeders are using weedy species as reservoirs of genes for resistance
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Evaluating low-volume irrigation systems for emission uniformity
by Dale Handley , Henry J. Vaux , Nigel Pickering
pp10-12, doi#10.3733/ca.v037n01p10
Abstract
Performance relates more to design and maintenance than to physical deterioration
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Lepidopterous pests of tomatoes in southern desert valleys
by Robert A. Van Steenwyk
pp12-13, doi#10.3733/ca.v037n01p12
Abstract
Not available – first paragraph follows: California produces approximately 30 percent of the total U.S. production of fresh market tomatoes and approximately 85 percent of the processing tomatoes. Of the California total, the southern desert valleys produce about 10 percent of the fresh market and 5 percent of the processing tomatoes. The tomato fruitworm, tobacco budworm, and beet armyworm are major pests of both fresh market and processing tomatoes in the southern desert valleys, attacking the fruit and sometimes causing serious economic loss. The tomato fruitworm and beet armyworm also are major pests of tomatoes in other areas of California.
Expanded Abstract | PDF

Immigration reform and California agriculture
by Philip L. Martin , Richard Mines
pp14-15, doi#10.3733/ca.v037n01p14
Abstract
Not available – first paragraph follows: The U.S. Immigration and Naturalization Service (INS) believes that four to six million aliens are living and working illegally in the United States. Every year, the INS makes almost one million apprehensions of undocumented workers, 90 percent of them Mexicans. Fewer than one million individuals are caught, because some persons are apprehended several times in a year. Even though more illegal aliens appear to be employed outside than inside agriculture (see table), they are often assumed to be only an agricultural problem.
Expanded Abstract | PDF

Minimizing postharvest diseases of kiwifruit
by Noel F. Sommer , Robert J. Fortlage , Donald C. Edwards
pp16-18, doi#10.3733/ca.v037n01p16
Abstract
Careful handling and proper storage are crucial to avoid postharvest losses
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Biofuel resources mapping for energy planning
by Mark Meo , Scott Sachs , Peter J. Hunter , Ernest Bullock
pp19-21, doi#10.3733/ca.v037n01p19
Abstract
The Land Use Mapping Program (LUMP) can be used to inventory crop residues
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The California peripheral canal: Who backed it, who fought it
by Douglas Gwynn , Orville E. Thompson , Kathleen L'Ecluse
pp22-24, doi#10.3733/ca.v037n01p22
Abstract
Powerful pro- and anti-canal alliances formed in this battle over water
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Crust control aids seedling emergence
by Burton J. Hoyle
pp25-26, doi#10.3733/ca.v037n01p25
Abstract
Proper application of chemical anticrustant improved chances of a good seedling stand
Expanded Abstract | PDF

Effects of malathion sprays on the ice plant insect system
by Jan A. Washburn , Richard L. Tassan , Kenneth Grace , Eric Bellis , Kenneth S. Hagen , Gordon W. Frankie
pp30-32, doi#10.3733/ca.v037n01p30
Abstract
Few adult natural enemies survived one spray, but populations recovered quickly
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editorial, news, letters & science briefs

EDITORIAL: An agenda for U.S. agriculture's future
by J. B. Kendrick
pp2, doi#10.3733/ca.v037n01p2
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General Information

Donations for agricultural research July 1, 1981 - June 30, 1982
Editors
pp27-29, doi#10.3733/ca.v037n01p27
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