Parasites of the frosted scale: Tests in northern California show natural enemies of scale control pest when not depleted by sprays
AuthorsA. E. Michelbacher
John E. Swift
Authors AffiliationsA. E. Michelbacher is Associate Professor of Entomology, University of California, Berkeley; John E. Swift is Specialist in Entomology, University of California, Berkeley.
Hilgardia 8(4):9-10. DOI:10.3733/ca.v008n04p9. April 1954.
The frosted scale–Lecanium pruinosum Coquillett–occurs in most of the walnut orchards in northern California.
Michelbacher A, Swift J. 1954. Parasites of the frosted scale: Tests in northern California show natural enemies of scale control pest when not depleted by sprays. Hilgardia 8(4):9-10. DOI:10.3733/ca.v008n04p9
Also in this issue:Ground-water overdraft: Increasing demands creating long-run overdraft on ground-water resources of the Antelope Valley
The macadamia nut: Australian nut varieties studied as possible new crop for California
Exocortis transmission tests: Effect of Eureka lemon budwood in transmission of exocortis to trifoliate orange and hybrids studied
Nitroaenen and orange production: Results of preliminary experiments indicate some groves need less nitrogen to maintain production
Growth of citrus seedlings: Effect of 2,4–D available to roots of seedlings varies with concentration and seedling variety
The sunflower moth: Preliminary experiments indicate parathion, DDT effective controls
Effect of pesticides in soils: Results of insecticide absorption by the soil is subject of field and greenhouse studies
Coyote brush on rangeland: Control of brush by chemicals successful in tests for reclaiming farming land in San Mateo County
Sulfuric acid as a penetrating agent in arsenical sprays for weed control