Contact Us
University of California Cooperative Extension Ventura County
669 County Square Drive, Suite 100
Ventura, CA 93003
Phone: 805.645.1451
Fax: 805.645.1474
Office Hours:
Monday - Friday from 9 a.m. to 4 p.m.
The office will be closed for the following holidays:
March 29 – Ceaser Chavez Day
May 27 – Memorial Day
June 19 – Juneteenth
July 4 - Independence Day
Soil Testing Laboratories
Note: The laboratories in this listing are for informational purposes only and do not constitute any endorsement or recommendation by UC Cooperative Extension. If you are a laboratory that would like to be added/updated, please email nanders@ucanr.edu
| Name | Address | Phone # and Hours | $ Soil Analysis | Notes |
| Fruit Growers Lab | 853 Corporation St, Santa Paula, CA 93060 | (805) 392-2000 M-F 8am-5pm | Basic soil organic matter analysis $21. Sovita respiration test runs $40. | Can drop off sample anytime during business hours, need about 2 lbs of soil (about ½ a gallon zip plastic bag) |
| Precision Agri-Lab | 24730 Avenue 13, Madera, CA 93637 | (559) 661-6386 M-F 8am-5pm |
$65 | Same as above |
| Dellavalle Laboratory, Inc | 1910 W. McKinley Ave, Suite 110, Fresno, CA 93728 |
(559) 233-6129 M-F 8am-5pm |
$52-$88 | Same as above |
| A&L Western Labs | 1311 Woodland Ave, Suite 1 Modesto, CA 95351 |
(209) 529-4080 M-F 8am-5pm |
$35 | Drop off during business hours, about ½ a gallon zip plastic bag. |