January 1976

Cover: Grape harvester removing lemons from close-set trees near Santa Paula. Fruit is conveyed into cushioned bed of pickup truck.

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California Agriculture, January 1976

Volume 30, Number 1

research articles

Soil fumigation: One way to cleanse nematode-infested vineyard lands
by D. J. Raski , N. O. Jones , J. J. Kissler , D. A. Luvisi
pp4-7, doi#10.3733/ca.v030n01p4
Abstract
Not available – first paragraph follows: In recent years there have been some exciting successes using deep-placement, high-dosage soil fumigation to produce flourishing grapevines where previous crops have failed due to nematodes. Replanting new grapevines on their own roots in nematode infested soils can be disastrous because nematode attacks may destroy the developing root systems, restrict plant vigor, and reduce potential yields. In extreme cases young vines are stunted by nematodes and never develop sufficient vigor to produce a full crop.
Expanded Abstract | PDF

Mechanical harvesting of Jojoba
by D.M. Yermanos , R. Gonzales
pp8-9, doi#10.3733/ca.v030n01p8
Abstract
If jojoba could be pruned to resemble tree-like plants recently found growing wild in Baja California, nuts could be harvested with existing equipment, making commercial jojoba plantations economically feasible.
Expanded Abstract | PDF

Lemon picking with a grape harvester
by R. M. Burns , S. B. Boswell , B. Keillor
pp10-12, doi#10.3733/ca.v030n01p10
Abstract
From 40 to 90 percent of the mature lemon fruit on young close-set or trellis-grown trees have been removed mechanically by a grape harvester in 3 years of field trials in Ventura County. Abscission chemicals to loosen the fruit and growth inhibitors to retard the tree foliage proved helpful.
Expanded Abstract | PDF

Chemical control of powdery mildew on sugar beets
by Demetrios G. Kontaxis
pp13-14, doi#10.3733/ca.v030n01p13
Abstract
Two applications of sulfur dust at 35 or 40 pounds per acre gave good control of sugar beet powdery mildew and was superior to Benomyl, wettable sulfur, cupric hydroxide, or three proprietary fungicides. None of the materials was phytotoxic.
Expanded Abstract | PDF

editorial, news, letters & science briefs

EDITORIAL: The fuel/food connection
by J. B. Kendrick
pp2, doi#10.3733/ca.v030n01p2
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Predicting cotton yields
Editors
pp3, doi#10.3733/ca.v030n01p3a
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Plant extract aids resprouting
Editors
pp3, doi#10.3733/ca.v030n01p3b
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Drip irrigation study
Editors
pp3, doi#10.3733/ca.v030n01p3c
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Training citrus trees
Editors
pp3, doi#10.3733/ca.v030n01p3d
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Beneficial avocado fungi
Editors
pp3, doi#10.3733/ca.v030n01p3e
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Increased deer harvest
Editors
pp3, doi#10.3733/ca.v030n01p3f
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New strawberry variety
Editors
pp3, doi#10.3733/ca.v030n01p3g
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