Aphid control on chrysanthemums and carnations
AuthorsRonald D. Oetting
Frank S. Morishita
Roland N. Jefferson
Wesley A. Humphrey
Seward T. Besemer
Authors AffiliationsR.D. Oetting is Assistant Professor and Assistant Entomologist, Department of Entomology, University of California, Riverside; F.S. Morishita is Staff Research Associate, Department of Entomology, University of California, Riverside; R.N. Jefferson is Professor Emeritus, Department of Entomology, University of California, Riverside; W.A. Humphrey is Farm Advisor for Orange County; S.T. Besemer is Farm Advisor for San Diego County.
Hilgardia 31(12):7-9. DOI:10.3733/ca.v031n12p7. December 1977.
Aphids commonly occur as pests on chrysanthemums and carnations as well as on many other plants grown in plastic or glass houses in California. They are usually found in colonies on plant tips, shoots of new growth, or flowers. Aphids multiply so rapidly under favorable conditions that a light infestation may increase to alarming proportions in a week. They are generally more numerous during cooler months when the most serious damage occurs. However, damage can be observed throughout the year.
Also in this issue:Are we listening?
4-H community pride program
A newly imported California red scale parasite from Saudi Arabia
Downy mildew of lettuce controlled by systemic fungicide
Research aids christmas tree industry
Survival of potato-blackleg and soft-rot bacteria
Response of Tokay grapes to spray applications of 2,4-D