Circadian Crop Sciences, LLC

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Circadian Crop Sciences, LLC is a Placer County business that has designed and manufactured what are classified as Minimum Risk pesticides by the EPA.   We have economically viable alternatives to sulfur and offer short-lived, low-toxicity pesticides that perform in the field and in conjunction with IPM.  Our products are also compliant with Lodi Rules sustainability certification.  Reducing sulfur use will benefit our community and farm workers.  Reducing the use of long-lived pesticides will protect groundwater.

All Phase as a Fungicide Bactericide

All Phase is a bona fide cost competitive, alternative to sulfur.  In 2019 All Phase performed well as a standalone product and with no surfactant in a field trial conducted by the UC Davis Plant Pathology Department for controlling PM on Chardonnay grapes.  In 2020 All Phase plus a surfactant completely suppressed downy mildew in hops in a study conducted by Collins Ag Consultants.  In 2020 All Phase plus a surfactant reduced Almond Scab by 40% in a study conducted by Professor James Adaskaveg of UC Riverside.  In 2021 All Phase at 5 lbs per acre plus a surfactant had the lowest mean incidence and severity of PM of any product tested and with no phytotoxicity.  In 2022 All Phase at 0.33 lbs per acre plus a surfactant was second to Luna Sensation in mean incidence and severity of PM of products tested, which included micronized sulfur at 5 lbs per acre.   At 0.33 lbs per acre, All Phase is cost-competitive with sulfur.  Potassium sorbate in All Phase has at least ten documented modes of action and is a synthesized version of a naturally occurring molecule.  In the scientific literature, potassium sorbate is documented as a broad-spectrum fungicide and bactericide and includes a variety of plant pathogens.  We combine potassium sorbate with the biostimulant, carrageenan, to offset any negative effects potassium sorbate may have on plants.  Carrageenan is derived from a type of seaweed and forms a polymer in the solution that dries to an invisible film infused with potassium sorbate.  We gave All Phase to a small farmer in 2020 who was having trouble controlling peach leaf curl with copper.  That winter he went with half our recommended rate and half the recommended rate of copper.  He said he had better results, but still had some peach leaf curl.  Last winter he made three applications of All Phase only (after leaf drop, mid-winter, prior to bud break) and he wrote to tell me that he had no peach leaf curl this year.  I’ll eventually get this into a controlled independent study.  The point of telling you about that is that as time goes on we are sure to document many more uses where All Phase excels.  Some advantages of All Phase are 1. No harvest interval; 2. Spray dry re-entry; 3. Exempt from EPA residue tolerances so crops treated with it are considered pesticide free; 4. Eighty-year history as a food preservative; 5. Ten documented modes of action; 6. No pesticide use reporting requirement in California; 7. Will not harm honey bees or other beneficial insects or mites;  8. Labeled for use on most crops indoors or out in the field; 9. No sublimating into noxious gas; 10. Not a skin irritant.

All Phase as a Spray Adjuvant (Test companion pesticides for precipitates.  Companion pesticides must tolerate high pH).

  1. Inexpensive.
  2. Safe when used as directed.
  3. Incorporates ingredients from companion pesticides into the matrixes of the polymer.
  4. The polymer increases drying time so active ingredients stay wet longer in contact with target organisms and dries to a film infused with these active ingredients.  The polymer also reduces leaf drip, so more of what is sprayed, stays.
  5. Is a bona fide fungicide/bactericide when used alone.
  6. Potassium sorbate has activity in compromising cell walls and membranes, increasing their permeability.  This enables potassium sorbate to enter the organism.  This same characteristic enable companion pesticides to enter target organisms, increasing their effectiveness.

Advantages of our Essential Oil Pesticides (Circadian Sunrise & Long Shadow)

  1. Wax off / Wax on technology (patent pending).  Essential oils tend to strip waxes from leaves.  We replace those with our complex of waxes to maintain a proper vapor barrier
  2. Antioxidant from raw corn oil (patent pending) helps plants deal with environmental stresses.
  3. Triacontanol offsets other phytotoxic effects of essential oils (patent pending).  Triacontanol was first patented as a biostimulant by Michigan State University.  Content of triacontanol in our products is lab-verified and in a bioactive concentration.

Circadian Sunrise Insecticide/Miticide/Fungicide (10% Mint Oil, 17% Raw Corn Oil, 29 ppm triacontanol, OMRI Listed). So gentle you can safely use it immediately before or after sulfur dusting.  Don’t try that with any other horticultural oil.

Long Shadow Insecticide/Miticide/Fungicide/Nematicide (30% Cinnamon Oil, 73 ppm triacontanol). Has residual activity to deter phytophagous insects such as thrips from feeding.  Excels at killing mealybugs.  Presently in the process of acquiring OMRI certification.

I started this company after a 27-year career in the Plant Sciences Department at UC Davis.  Our essential oil pesticides have no harvest interval, a spray/dry REI, and no pesticide use reporting requirements.  They are perfect for environmentally and politically sensitive areas and for use with IPM.


    LCWC Finance Committee Meeting 10:00 am
    LCWC Finance Committee Meeting @ Video Conference
    Jun 13 @ 10:00 am – 11:00 am
    Agenda – LCWC Finance Committee Meeting, June 13, 2024
    LCWC Executive Committee Meeting 2:00 pm
    LCWC Executive Committee Meeting @ LCWC Office
    Jun 25 @ 2:00 pm – 3:00 pm
    Agenda – LCWC Executive Committee Meeting, June 25, 2024
    LCWC Board Meeting 3:00 pm
    LCWC Board Meeting @ LCWC Office
    Jun 25 @ 3:00 pm – 5:00 pm
    Agenda – LCWC Board Meeting, June 25, 2024
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