William H. Olson

County Director and Farm Advisor

118 Ridgeview Lane
Oroville, CA 95966
(530) 589-1844
wholson@ucdavis.edu

Specialty

Walnuts, Prunes ,

Biography

Work Information

Location: Butte County
Program Area: Administration / Pomology
Unit: Cooperative Extension

Other Information

Significant Other: Patricia Olson
Interests: "golf, fishing, hunting and travel"
County: Butte
Notes: "31 Years with UCCE UC Farm Advisor, Emeritus (cell) 530-521-8151"

California Agriculture Article Contributions

Crown gall can spread between walnut trees in nurseries and reduce future yields
Pheromones control oriental fruit moth and peach twig borer in cling peaches
Growers prefer personal delivery of UC information
Alternate-year walnut pruning can boost yields, cut cost
Adjusting sprinkler angle reduces spread of disease in pistachio
Shorter sprinkler irrigations reduce Botryosphaeria blight of pistachio
Guthion-resistant walnut aphid parasite: Release, dispersal, and recovery in orchards
Improving orchard soil structure and water penetration
Survey detects viruses in almond, prune, and sweet cherry orchards
Correcting potassium deficiency in prune trees is profitable
New monitoring methods for the walnut husk fly
Walnut varieties differ in susceptibility to codling moth damage
Lower ethephon rates effective in walnut harvest
Is walnut drying time affected by ethephon?
Effect of environment on reproduction in dusky-veined walnut aphids
Dusky-veined walnut aphid studies

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