New control for alfalfa aphid: Systemic insecticide protects insect enemies of aphid, allows compatibility of chemical treatment with biological control
AuthorsVernon M. Stern
Robert van den Bosch
Authors AffiliationsVernon M. Stern is Assistant Entomologist, University of California, Riverside; Robert van den Bosch is Associate Entomologist in Biological Control, University of California, Riverside; Dewey Born was Laboratory Technician in Biological Control, University of California, Riverside, at the time these studies were conducted.
Hilgardia 12(1):4-13. DOI:10.3733/ca.v012n01p4. January 1958.
There is little doubt that the insecticides parathion, malathion, and TEPP prevented a widespread devastation of California's alfalfa industry following the 1954 appearance of the spotted alfalfa aphid—Therioaphis maculata (Buckton) but the materials also proved to be toxic to insect enemies of the aphid.
Also in this issue:The toxic effect of certain chemical solutions on spores of Penicillium italicum and P. digitatum
Problems of water districts: Economic merit and feasibility are important considerations in justifying the construction of proposed district projects
Rosy apple aphid control tests: Dormant oil plus phosphate compounds applied to control the overwintering eggs more efficient than spring foliage sprays
Boom and broadcast sprayers: Comparative field and laboratory study of spray distribution as applied by two types of sprayers on spotted alfalfa aphid
Plastic shelters for new lambs: Protection from weather during first few days after birth reduced losses in tests during January-March lambing season
Nitrogen-fixation by deerbrush: Greenhouse experiments suggest deerbrush has root nodules like leguminous plants with nitrogen-fixing properties
Aureomycin in livestock feed: Antibiotic in form of a prepared alfalfa-base pellet added to ration in feeding trials with weaner calves and yearlings
Solana strawberry: New variety yields fruit of high quality in southern California trial plantings
Retail grocery store services: Types of telephone ordering and of delivery services offered customers shown to be influenced by characteristics of store
Leaf-scar infection in relation to the olive-knot disease
Charcoal rot of sugar beet