California Agriculture, April 1965

Volume 19, Number 4
Elm Leaf Beetle

research articles

Parasites for control of: Grape Leafhopper
by R. L. Doutt , J. Nakata
pp3, doi#10.3733/ca.v019n04p3
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Leafhopper Treatment Levels for: Thompson seedless grapes used for raisins or wine
by C. D. Lynn , F. L. Jensen , D. L. Flaherty
pp4-5, doi#10.3733/ca.v019n04p4
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Feeding studies on the grape leafhopper
by H. Kido , E. M. Stafford
pp6-7, doi#10.3733/ca.v019n04p6
Abstract
Abstract Not Available – First paragraph follows: in areas where natural enemies of the grape leafhopper, Erythroneura elegantula Osb. are absent, or insufficient in numbers, chemical control may be necessary to prevent an increase in leafhoppers from causing serious economic damage. From an economic standpoint, determining the level of infestation allows not only prevention of serious damage to the vines, but also could save the cost of insecticide applications. This study of daily and seasonal periods when leafhopper damage occurred was conducted as a preliminary step in determining the economic level of leafhopper infestation.
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Surveying: Leafhopper populations
by F. L. Jensen , E. M. Stafford , H. Kido , D. Flaherty
pp7, doi#10.3733/ca.v019n04p7
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A progress report of control methods for: Elm Leaf Beetle
by C. S. Koehler , P. Dean Smith , R. L. Campbell , C. S. Davis
pp8-10, doi#10.3733/ca.v019n04p8
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Insecticides: For control of grape leafhopper
by F. L. Jensen , C. D. Lynn , E. M. Stafford , H. Kido
pp10-11, doi#10.3733/ca.v019n04p10
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Handling: Sweet cherries for fresh shipment
by W. C. Micke , F. G. Mitchell , E. C. Maxie
pp12-13, doi#10.3733/ca.v019n04p12
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Tomato Planting Dates: For mechanical harvesting
by W. L. Sims
pp14, doi#10.3733/ca.v019n04p14
Abstract
Abstract Not Available – First paragraph follows: recent studies with varieties of canning tomatoes for mechanical harvesting support tests and observations during the past four years emphasizing the effectiveness of date of planting. An orderly and continuous supply of fruit to the processor can be assured only through the use of properly spaced planting dates. During the 1965 season, more than 200 machines are expected to be used in harvesting a potential 20,000 acres-about 17 to 20% of California's average annual canning tomato production.
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Temperature Effects: On vegetative growth and oil quality of FLAX
by D. M. Yermanos , J. R. Goodin
pp15-16, doi#10.3733/ca.v019n04p15
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General Information

Integrated Pest Control: …New tactics against grape pests
by M. L. Peterson
pp2, doi#10.3733/ca.v019n04p2
PDF