Hilgardia 46(1):39-40. DOI:10.3733/ca.v046n01p39. January 1992.
Following are articles appearing in California Agriculture, Volume 45, Numbers 1 through 6, January through December 1991. Back issues may be purchased, while supplies last, at $2.00 per copy (make checks payable to UC Regents).
Also in this issue:Competitive displacement: extinction of the yellow scale, Aonidiella citrina (Coq.) (Homoptera: Diaspididae), by its ecological homologue, the California red scale, Aonidiella aurantii (Mask.) in Southern California
Exotic pest research well worth the price
UC develops expanded agenda to combat exotic pests
On the California border, exotic pests pose growing problem for California
Plant quarantines: domestic strategies yield to international policies
The Mediterranean fruit fly in California: taking stock
How Africanized honey bees will affect California agriculture
Ecological research: Long-term studies to gauge effects of invading bees
Biological control of ash whitefly: a success in progress
Sweetpotato whitefly: prospects for biological control
Imported fire ants: potential risk to California
Russian wheat aphid: natural enemies, resistant wheat offer potential control
“Organizational classes” explain differences among westside farms