Cal. Code Regs. tit. 3, § 6990.3
(b) If both soil and foliar application methods are used on the same crop, or if multiple neonicotinoid active ingredients are applied to the same crop, a total maximum combined application rate of 0.326 lbs. ai/A/season may be applied, provided that:
(c) If managed pollinators will be used during the growing season, the application rate and timing restrictions listed in the following table apply in addition to the limitations in subsections (a) and (b):
Application Rate and Timing Restrictions for Crops in the Cereal Grains Crop Groups
Active Ingredient
Soil Application
Foliar Application
Maximum Application Rate
Required Timing
Maximum Application Rate
Required Timing
Clothianidin, Dinotefuran, Imidacloprid, or Thiamethoxam
0.2 lbs. ai/A/season
Apply only at pre-planting or planting
0.126 lbs. ai/A/season
Apply only between pre-planting until heading (inflorescence or tassel emergence)
The provisions of this section apply to any neonicotinoid application made to a crop in the cereal grains crop groups. An application of a neonicotinoid to barley, oats, rice (Oryza sativa), rye, triticale, or wheat is not subject to the provisions of this article.
Note: Authority cited: Sections 11456 and 12976, Food and Agricultural Code. Reference: Sections 12824 and 12838, Food and Agricultural Code.
1. New section filed 4-10-2023; operative 1-1-2024 pursuant to Government Code section 11343.4(b)(2) (Register 2023, No. 15).