Aphid parasites established: Natural enemies of spotted alfalfa aphid brought from Middle East expected to be established throughout the state in 1958
AuthorsKenneth S. Hagen
James K. Holloway
F. E. Skinner
G. L. Finney
Authors AffiliationsKenneth S. Hagen is Assistant Entomologist in Biological Control, University of California, Berkeley; James K. Holloway is Entomologist, United States Department of Agriculture, and Associate in Biological Control, University of California, Berkeley; F. E. Skinner is Principal Laboratory Technician in Biological Control, University of California, Berkeley; G. L. Finney is Associate Specialist in Biological Control, University of California, Berkeley.
Hilgardia 12(2):3-15. DOI:10.3733/ca.v012n02p3. February 1958.
Three imported species of wasps—Praon palitans Muesebeck, Trioxys utilis Muesebeck and Aphelinus semiflavus Howard—parasites of the spotted alfalfa aphid, are abundant in southern California and are becoming established in northern California.
Also in this issue:Parity in marketing orders: Law places limits on federal assistance when marketing order programs are suspended or operated at minimum standards
Gibberellin on white potatoes: Applied to freshly harvested, resting potato tubers, or used in preharvest foliar sprays, gibberellin promotes sprouting
Gibberellin tested on grapes: Specific responses to sprays shown in fruit set, berry size, and elongation of cluster parts in experiments during 1957
Chemicals on European red mite: Two different methods of evaluation of spray materials for spider mite control used in field tests during 1957 season
Crown mite damage on spinach: Investigations demonstrate value of early chemical treatment for control of relatively new mite affecting spinach leaves
Fertilizer trial with plums: Results of tests with Santa Rosa variety in principal plum growing area of Kern County determined by leaf analyses
Micronutrients in the avocado: Effects of nitrogen fertilization on the zinc, copper, iron, manganese and boron content of Fuerte avocado leaves
Manzanita control in ponderosa: Prescribed burning used to kill brush and to deplete seed source in the soil and promote germination of pine seedlings
Grocery store credit service: Credit, like delivery, telephone, and sales service, offered customers is related to characteristics of individual stores
The deposit of aqueous solutions and of oil sprays
The use of selenium in sprays for the control of mites on citrus and grapes