Western grape leaf skeletonizer: 1954 biological control program indicates parasitism plus virus disease registering important reduction of vineyard pest

Smith, O

Western grape leaf skeletonizer: 1954 biological control program indicates parasitism plus virus disease registering important reduction of vineyard pest

Author

Owen J. Smith

Author Affiliations

Owen J. Smith is Assistant Entomologist in Biological Control, University of California, Riverside.

Publication Information

Hilgardia 9(8):7-7. DOI:10.3733/ca.v009n08p7. August 1955.

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Abstract

Two insect parasites, Apanteles harrisinue Mues.—previously called sp. “A”—and Sturmia harrisinae Coq., together with an unnamed granulosis virus, have attained major importance—on the basis of field performance—as natural enemies of the grape leaf skeletonizer in San Diego County.

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Pacific coast canned fruits: Report on 1954–55 f.o.b. shipments and price relationships for canned peaches, pears, apricots, and fruit cocktail

Frost protection in almonds: Wind machine studies in 1955 frost season indicate protection in mature almond orchards below that obtained in citrus

Small-nut almonds: Progress in development of varieties consistently producing small sized nuts

California red scale control: Natural enemies can keep pest under control in citrus groves when given help and in areas with favorable climate

Causes of avocado leaf injury: Certain foliage injury often attributed to insect feeding may actually be the result of some physiological disorder

Salt damage to strawberries: Types of water, irrigation system, and soil condition found to influence salt accumulation in strawberry plantings

Quality of dried french prunes: Studies on fruit maturity for influence on yield, quality, time-range for most profitable harvest of interior valley prunes

Rangeland forage: Almost trebled by seeding rose clover and use of sulfur-bearing fertilizers

Insect transmission, host range, and field spread of potato calico

Initial localization and subsequent spread of curly-top symptoms in the sugar beet