California red scale control: Natural enemies can keep pest under control in citrus groves when given help and in areas with favorable climate
John H. Landi
Ernest B. White
Authors AffiliationsPaul DeBach is Associate Entomologist in Biological Control, University of California, Riverside; John H. Landi is Senior Laboratory Technician, Biological Control, University of California, Riverside; Ernest B. White is Principal Laboratory Technician, Biological Control, University of California, Riverside.
Hilgardia 9(8):8-10. DOI:10.3733/ca.v009n08p8. August 1955.
Four parasites of the California red scale—Aphytis chrysomphali (Mercet); Aphytis lingnanensis Compere, formerly known as Aphytis “A”; Prospaltella perniciosi Tower, Oriental Strain; and Comperiella bifasciata Comp., Chinese strain—are established in certain citrus areas in southern California.
Also in this issue: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
Western grape leaf skeletonizer: 1954 biological control program indicates parasitism plus virus disease registering important reduction of vineyard pest
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