How to Manage Pests

UC Pest Management Guidelines


Fruit Set with Gibberellic Acids (GA3)

(Reviewed 9/08, updated 9/08)

In this Guideline:

Variety Amount to use (g a.i. = grams active ingredient) Time

Calculate impact of pesticide on air quality
Not all registered pesticides are listed. Always read label of product being used.
Note: Certain formulations emit high amounts of volatile organic compounds (VOCs); use low-VOC formulations (PDF). Regulations affect use for the San Joaquin Valley from May 1 to October 31, 2015 and 2016. Review the Department of Pesticide Regulation's updated fact sheet (PDF)
A. CLEMENTINE MANDARIN 1–8 g a.i./acre in water spray Make 1 to 2 applications between 50% petal fall and
      3 weeks after petal fall
  COMMENTS: Restricted entry interval (REI): 12 hours. Use a dilute spray with sufficient spray volume for adequate coverage of tree canopy. Do not apply mixtures of materials that produce a pH higher than 8.0 (see precautions under Plant Growth Regulators-General Information).



[UC Peer Reviewed]

UC IPM Pest Management Guidelines: Citrus
UC ANR Publication 3441

Plant Growth Regulators

  • C. J. Lovatt, Botany and Plant Sciences, UC Riverside
Acknowledgment for contributions to Plant Growth Regulators:
  • C. W. Coggins, Jr., Botany and Plant Sciences, UC Riverside

Top of page

Statewide IPM Program, Agriculture and Natural Resources, University of California
All contents copyright © 2015 The Regents of the University of California. All rights reserved.

For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See our Home page, or in the U.S., contact your local Cooperative Extension office for assistance.

Agriculture and Natural Resources, University of California

Accessibility   /PMG/r107900611.html revised: May 4, 2015. Contact webmaster.