California Agriculture, August 1975

Volume 29, Number 8

research articles

Chemical loosening of sweet cherries as a harvest aid
by W. C. Micke , W. R. Schreader , J. T. Yeager , E. J. Roncoroni
pp3-4, doi#10.3733/ca.v029n08p3
Abstract
Abstract Not Available – First paragraph follows: Mechanical harvesting of sweet cherries for brining is feasible in California but it has not been used extensively because of the difficulty of removing fruit from the tree. A loosening agent to reduce the force necessary to remove fruit would aid mechanical harvest.
Expanded Abstract | PDF

Control of the corn earworm on sweet corn in Southern California
by G. G. Kennedy , H. N. Nakakihara , E. R. Oatman
pp4-5, doi#10.3733/ca.v029n08p4
Abstract
Abstract Not Available – First paragraph follows: The corn earworm, Heriothis zea (Boddie), also known as he tomato fruitworm and cotton bollworm, is a serious pest on weet corn, tomato, cotton, and several other row crops grown commercially in California. Sweet corn, however, is the preferred host and, although the larvae also feed in the tassel in the whorl, the most significant damage results from feeding on kernels in the developing ear.
Expanded Abstract | PDF

California's Citrus Variety Improvement Program
by Forrest Cress , Walter Reuther , E. C. Calavan
pp9-10, doi#10.3733/ca.v029n08p9
Abstract
Abstract Not Available – First paragraph follows: California citrus growers and nurserymen today can draw from a unique bank that should be of progressively increasing value to them in future years as its holdings grow.
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Cabbage looper control on seedling lettuce
by R. K. Sharma , N. C. Toscano , K. Kido , A. F. Van Maren
pp10-11, doi#10.3733/ca.v029n08p10
Abstract
Abstract Not Available – First paragraph follows: In the Imperial Valley, populations of the cabbage looper, Trichoplusia ni (Hubner) (photo) often build up on cotton and gradually spill into seedling lettuce in the fall. Looper infestations in lettuce are so heavy some years, that lettuce production would be in jeopardy unless efficiently controlled. Good insect control on lettuce is even more important because of increasing demands from the consumer for produce free of insect damage and debris.
Expanded Abstract | PDF

The economics of high density apple orchards in California
by A. D. Reed
pp12-14, doi#10.3733/ca.v029n08p12
Abstract
SummaryHigh density plantings of apples have a definite potential under California conditions. The large development costs are more than offset by the early production of the high density plantings. The higher the interest rate, the more advantage there is to the high density plantings. Under the price and cost relationships used in this study, orchards with a 12 ton potential production were not profitable at any density of tree plantings.
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Low rates of sulfur against powdery mildew on sugar beets in the Imperial Valley, California
by Demetrios G. Kontaxis
pp15, doi#10.3733/ca.v029n08p15
Abstract
A single application of 15 pounds of sulfur 98 percent dust per acre gave 94 percent control of powdery mildew on sugar beets. One sulfur application will protect the crop for at least 4 weeks. If 15 pounds sulfur could be applied in commercial operations an estimated 1,625,000 pounds of sulfur could be saved each year.
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editorial, news, letters & science briefs

EDITORIAL: Priorities for food research
by J. B. Kendrick
pp2, doi#10.3733/ca.v029n08p2
PDF

Research briefs for California Agriculture
Editors
pp5, doi#10.3733/ca.v029n08p5
PDF

A progress report on the control of the root-knot nematode on white rose potato with granular nematicides
by J. D. Radewald , O. A. Harvey , F. Shibuya , J. Nelson
pp8-9, doi#10.3733/ca.v029n08p8
PDF

Correction: Pollen tube growth in almond flowers
Editors
pp14, doi#10.3733/ca.v029n08p14
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General Information

Public membership in marketing order advisory boards
by Sidney Hoos
pp6-7, doi#10.3733/ca.v029n08p6
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