The integration of chemical and biological control of the spotted alfalfa aphid: Impact of commercial insecticide treatments

Ray F. Smith and Kenneth S. Hagen

Hilgardia, 1959, vol. 29, issue 2

Abstract: Integrated control of the spotted alfalfa aphid has been achieved in California. Economic thresholds were established so that insecticides are applied only when damage is imminent. Native predators, introduced parasites, and entomogenous fungi now keep the spotted-alfalfa-aphid populations below the economic threshold for most of the year. When population counts in the individual field clearly demonstrate that a field is threatened, Systox is applied at low dosages. These chemical treatments give adequate control, but do not necessarily eradicate the aphids. Most of the predators and parasites survive and persist on the remaining aphids.

Keywords: Environmental; Economics; and; Policy (search for similar items in EconPapers)
Date: 1959
References: Add references at CitEc
Citations:

Downloads: (external link)
https://ageconsearch.umn.edu/record/381506/files/v29n02p131.pdf (application/pdf)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:ags:hilgar:381506

Access Statistics for this article

More articles in Hilgardia from California Agricultural Experiment Station
Bibliographic data for series maintained by AgEcon Search ().