Ash bug control: Timing of application of insecticide important
AuthorRobert L. Usinger
Author AffiliationsRobert L. Usinger is Assistant Professor oj Entomology, and Assistant Entomologist in the Experiment Station, Berkeley.
Hilgardia 2(3):13-13. DOI:10.3733/ca.v002n03p13. March 1948.
The most important insect enemies of the native Oregon Ash, and the commonly planted Arizona Ash, in California are plant bugs of the genus Neoborus and lace bugs of the genus Leptoypha.
Also in this issue:Farm real estate: Situation in California reviewed
Irrigation: During a rainfall-deficient year
Stubble mulch: As a protective measure against erosion of grainland in California
Table grapes: Relation of heat summation to time of maturing and palatability
Mealybugs on pears: Biological control by utilizing natural enemies
Commercialized farming: Requires better management
Weeds are costly: Represent about half of the total cultivation expenses of crop
Selective weed killers: Synthetic compounds important development in agriculture
Punjab flax: For seed production in Imperial Valley
Suction harvester: Picks up almonds from ground at rate of about four acres a day
Quick decline: Experiments seek control of virus-caused disease of orange trees
Fly strike in sheep: Quick-acting contact poisons tested
New variety of canning tomato: Recommended for trial where wilt is serious
A study of resistance to western yellow blight of tomato varieties