Codling moth control sprays: New insecticides tested in field investigations in southern California for effectiveness against several pests of walnuts
AuthorJ. C. Ortega
Author AffiliationsJ. C. Ortega is Associate Specialist in Entomology, University of California, Riverside.
Hilgardia 9(5):6-14. DOI:10.3733/ca.v009n05p6. May 1955.
Improper timing—or complete omission—of DDT treatment was the major contributing factor to the relatively high infestations of codling moth in walnuts in some areas of southern California during the 1954 season.
Also in this issue:Time study of plum packaging: Comparative study of labor requirements in packing plums in wooden crate and in experimental carton in test shipments
Costs of lumber production: Production costs in California have become vital factor in determining nation-wide use of lumber and its price level
Range cover after noxious weed: Desirable and undesirable grasses and forbs compete for range space cleared of Klamath weed by leaf-feeding beetles
Brush control with chemicals: Hormone-type sprays tested for use in brushland management prove most effective when applied to current year seedlings
Petal blight disease of azaleas: Control of fungus-caused disease of azaleas and closely related plants is essential to prevent its further spread
Disease-free geranium stock: Production of healthy cutting stock increased by growing system that permits higher returns from smaller acreage
Valencia orange size and 2,4-D: Adequate soil moisture important for increasing fruit sizes with 2,4-D sprays applied when fruits are 4–12 weeks old
Argentine ant control on citrus: Granular formulations of certain chlorinated hydrocarbons applied to soil surface show promise in preliminary trials
Orange fruit size and yield: 31-year study of interrelationship of temperatures and orange fruit size and yield indicates influence of some climatic factor
An interspecific hybrid in Allium
Meiosis in Allium fistulosum, Allium cepa, and their hybrid