Walnut aphid control: Comparative study of control treatments made during heavy infestations in 1956

Michelbacher, A; Hitchcock, S

Walnut aphid control: Comparative study of control treatments made during heavy infestations in 1956

Authors

A. E. Michelbacher
Stephen W. Hitchcock

Authors Affiliations

A. E. Michelbacher is Professor of Entomology, University of California, Berkeley; Stephen W. Hitchcock is Research Assistant, University of California, Berkeley.

Publication Information

Hilgardia 11(5):10-15. DOI:10.3733/ca.v011n05p10. May 1957.

PDF of full article, Cite this article

Abstract

An early infestation of the walnut aphid—the most severe during the past 10 to 15 years—occurred throughout much of the Central Valley in 1956.

Also in this issue:

Frozen strawberries: Study indicates efficiency of mechanical crate dumping in most processing plants

Strawberry fertilizer trial: Tests in new strawberry planting on old potassium deficient apricot land indicated no response to potash or phosphate

Cantaloupe crown blight study: Observations reveal disease to be severe on all commercial varieties of spring harvested cantaloupes in desert regions

Lettuce root aphid: Value of a preplanting soil treatment with parathion proven by tests in 1956

Gibberellin on flower crops: Studies made of response of some commercially grown flowers to applications of plant growth regulating chemical compound

Rooting cuttings under mist: Leafy softwood cuttings of paradox walnut hybrids rooted successfully in mist propagation tests during summer of 1956

Improved pastures: Both sheep production and forage yield increased by range improvement

Swine feeding tests: Supplemented cooked garbage tested in feeding trials in Los Angeles County

The development of resistance to hydrocyanic acid in certain scale insects

The stupefaction of red scale, Aonidiella aurantii, by hydrocyanic acid